r.oleman Serviceman's Handbook The Coleman lajhb and Stove Company General Offices and Factory: WICHITA, KANSAS, U.S.A. Canadian Office and Factory: Toronto, Canada. Sales Offices: Chicago, Philadelphia, Los Angeles; Honolulu, Hawaii.
INDEX Page Service Instructions for No. 609A, No. 4A, No. 8A and all Coleman Instant-Lite Irons 4 Instructions for Servicing and Operating Coleman Quick- Lite Lamps and Lanterns 6 Service Instructions for Coleman Instant-Lite Lamps and Lanterns 7 Instructions for Servicing and Operating Coleman Kerosene Lamps and Lanterns 9 Coleman "Instant Lighting Model" Camp Stoves and Auto Trailer Stoves 10 Service Instructions for No. 16 Instant-Lighting Radiant Heater 12 Service Instructions for No. 5, No. 5A and No. 5B Heaters 13 Instructions for Servicing and Operating Coleman Air-O-Gas and Coleman Cooker Gas Pressure Ranges and Stoves Manufactured Prior to 1932 14 Instructions for Operating and Servicing Coleman Instant- Gas Stoves Manufactured 1932-1933 15 1934-1935 Stoves with Dial Type Valves and Band-A-Blu Burners. 17 Service Instructions for Coleman Safety Ranges, 1936 to 1942... 18 Service Gas Instructions Plants for Model 457-458-460 Coleman Handy 20 Coleman Oil Heaters 22
TO THE COLEMAN SERVICE MAN: One of the most important links in the chain of distribution between the manufacturer and the user of a Coleman Appliance is the dealer's "Coleman Service Man". The salesman, of course, must sell the appliance, yet it is the efficient service man that the user of the appliance needs when questions arise concerning the operation of the appliance. It is the desire of The Coleman Lamp and Stove Company, therefore, to be of all possible assistance to the dealer in training his repair or service man to be an efficient Coleman Service Man. We draw a distinction between a repair man and a service man. A service man not only repairs the appliance, but he passes such information on to the user that will enable him to repair the appliance himself in the future and thus be in a position to obtain efficient and uninterrupted service from the Coleman Appliance. As a progressive manufacturer, we have necessarily manufactured Coleman Appliances in a number of different models and the operation is more or less different for each model. It is only natural, therefore, that questions might arise from time to time that may be quite puzzling to the user of the appliance and even to the service man. For this reason, we have prepared some special service charts or instructions for the service man's guidance in servicing Coleman Appliances. Should questions arise in. regard to servicing Coleman Appliances, and the answers are not made clear in these service charts, we want the service man to write us for additional instructions concerning such questions. A satisfied customer is a talking advertisement for the dealer. An active service man rendering prompt and efficient Coleman Serivce will be able to assist greatly in increasing the dealer's sales volume. We invite the service man to write us any time we may be of assistance in solving service questions. If possible, let us know the model number of the appliance or describe it so that we can identify it, then let us have as many of the details as possible as to how the appliance fails to operate properly and the steps taken to correct it. Such letters will have prompt attention and handling by our Service or Engineering Departments.
SERVICE INSTRUCTIONS FOR No. 609A, No. 4A, No. 8A AND ALL COLEMAN INSTANT-LITE IRONS Before servicing or operating the Coleman Instant-Lite Iron, it would be well to first understand something about the mechanism of the iron, particularly the Instant-Lighting Mechanism. Upon examining the Instant-Lighting Mechanism, it will be noticed that there is a very small orifice or opening through the side of the fuel tip. Gasoline must feed through this orifice to reach the generator. At the time the valve is first opened, air will pass from the top of the fount down through the air wire and mix With the gasoline to make a fine spray or mist which will light instantly. In a very few seconds, heat from the sub-flame burner under the generator changes the gasoline in the generator from a liquid to a vapor, thus expanding it many times. The result of this is that the gasoline then begins to accumulate and back up in the valve and air wire to the gasoline level in the fount, thus automatically shutting off any further loss of air pressure down through the air wire. From this information, the importance-of having the orifice in the side of the fuel tip a certain size can readily be understood. If the orifice is too large, the first mixture when lighting the iron would be too rich and it would not light properly. If the orifice were too small, gasoline would not feed through fast enough to fill and back up in the air wire to shut off further loss of air pressure through the air wire. This orifice is protected by a small screen, yet due to the gum in the gasoline or to corrosion, the orifice may eventually fill up. The first indication of this will be a rather rapid loss of air pressure from the fount while the iron is in operation. Also, the mixture will be so lean that the iron will not instantlight properly. The flame will sort of flutter or have a tendency to float away from the burner. If you are able to get a better and steadier flame on the burner by holding the iron in an upsidedown position you may be quite sure that the orifice in the side of the fuel tip is filled with gum and corrosion. TO CLEAN ORIFICE One way to clean the orifice is to place the fuel intake assembly in a lye water solution which may be made by dissolving two teaspoonfuls of lye in a cup of water. The lye water will cut the gum from the screen and orifice without damaging them. If muriatic acid is available use it instead of lye water.
If the No. 604-299 Rotary Generator is used on the No. 8A Iron, the height of the flame must then be regulated by the lever on the side of the generator. When lighting the iron in warm weather, especially if a high gravity gasoline is used, it may happen that the first flash will consume all of the oxygen in the burner casting. The iron may then flare slightly. If this occurs, the operator should blow directly against the flame as though attempting to blow it out. This will force enough additional oxygen into the casting to make the mixture sufficiently lean that it will burn with a blue flame, instead of a yellow, flaring flame which might scorch the finish on the handle. Unpleasant fumes may be thrown off from the iron burner if a very low gravity gasoline is used, or if the slots in the burner get filled up with corrosion and sulphur. A gasoline with a high gravity test or a special stove and lighting fuel is sometimes preferable during the cold winter months, when the doors and windows are necessarily closed. TO CLEAN BURNER At intervals of every few weeks, the slots in the burner casting should be cleaned by drawing a thin knife blade through them. To do this, first remove the two large screws which hold the base and the body of the iron together, so that the iron may be lifted out by the handle. Keep the base of the iron clean and free of dirt or dust and thus avoid the fumes that might otherwise result. Oil the pump leather occasionally in order that the pump will function properly. Starch from materials being ironed may sometimes gather on the sole plate of the iron. It has a brown varnish-like appearance. Remove with Bon Ami or some suitable silver polish. EMPTY FOUNT AFTER EACH IRONING When through using the iron, it is a good plan to empty and discard the remaining gasoline from the fount. Such gasoline, if left in the fount, which is an air tight container, would sour and cause gum to form or collect in the orifice of the instant-lighting mechanism. To prevent sulphur from match heads collecting in the slots of the burner casting, hold the lighted match outside and just below the lighter hole in the side of the iron, when instant-lighting the iron. When removing the valve from the fount, it would be well to clamp the valve body in a vise, then place a wrench on the hexagon bushing nut soldered to the bottom of the fount and unscrew fount. When attaching fount and valve to bracket, hold fount firmly with one hand while tightening jamb nut to prevent valve from being pulled out of line. If valve is pulled out of line, the generator might bend or warp. To test the filler plug for pressure leak, hold the fount under water. Should it be necessary to send the iron to the factory, don't send base and body, for this would only increase the postal charges.
INSTRUCTIONS FOR SERVICING AND OPERATING COLEMAN QUICK-LITE LAMPS AND LANTERNS Many, many thousands of these older model Match-Lite Lamps and Lanterns are still in use. Many more thousands could be placed back into service again at very little expense. New burner caps, new burner tubes and perhaps a new generator would make them like new insofar as service or operation is concerned. One of course should first clean fount as well as burner parts. Fount may be cleaned by rinsing a time or two with clean, fresh gasoline. Contents of fount may be removed through filler plug bushing by holding fount in upside down position and shaking vigorously. This of course, should be done outside and away from all danger of fire. A generator is merely a device for holding liquid gasoline in a flame in order that the heat from flame will change the liquid gasoline to a vapor. Any substance in gasoline that won't vaporize would collect in the generator in the form of carbon and gum. It will be readily understood, therefore, that the more heat applied to the generator the greater will be the percentage of gasoline broken up, thus lessening carbon formation in generator. A weak or yellow smoky light isn't very good to read by. It is more expensive than a clear, white light, for it doesn't produce a sufficient amount of heat to completely break up the gasoline as it feeds through generator. The result is a short-lived generator. KEEP BURNER PARTS CLEAN Keep burner parts clean, especially air intake tube and screens in burner caps. Dirty or smoky screens interfere with free flow of gas to mantles, with result that a back pressure is created in mixing chamber to the extent that an insufficient amount of air is then drawn up through the air intake tube that supports the burner. This results in a rich mixture that burns with a yellow, smoky flame instead of a clear, white light. Soon the mantles would have black spots on them. Use a small brush such as an old discarded tooth brush to clean screens in burner caps each time before installing new mantles. When installing generator, the jamb nut should be screwed down with fingers and a wrench used only for the last turn or two to tighten sufficiently. If generator is held in a true up and down position with reference to valve, the jamb nut will screw down quite readily with fingers, thus avoiding any chance of cross-threading and stripping threads in top of valve. If air intake tube is bent or warped, straighten or replace it so generator may be held in correct position. Use two lighted matches, one on either side of generator to preheat generator. Just before matches burn out, crack valve open, then close at once. In a very few seconds flame in mantles will settle down to a white light, then open valve several turns. Test valve once in a while to make sure that it shuts off properly. If it doesn't, then raw gasoline will feed into generator while lamp is not in use and this will shorten life of generator. Keep pump in good order. Oil leather frequently so pump will function properly and thus enable one to put required amount of air pressure in fount. Don't use pliers on filler plug. Use wrench and avoid cutting corners off filler plug. The air stem is made of brass and seats in brass filler plug body. Closing air stem with fingers should be sufficient to make a positive shut off. KEEP THE COLEMAN LAMP OR LANTERN OPERAT- ING AT FULL CAPACITY AND YOU WILL HAVE AN ABUNDANCE OF BEAUTIFUL WHITE LIGHT AT LESS EXPENSE.
NO. 355 PYREX GLASS GLOBE Protects mantles from damage by flying insects; 5% inches diameter, 3 inches top opening, 3 3/16 inches bottom opening. May be installed on older model lamps providing the No. 129-335 shade holder clamps are used. NO. R55 JUMBO ROTARY GENER- ATOR (GAS TIP MARKED "Q") Has large carbon space. Special inside construction retards carbon formation, accommodates a wider range of fuels. Longer lasting, more economical, gives more dependable lighting service. Built-in rotary-lever operates cleaning needle, keeps generator tip clean. Used on older model Quick-Lite lamps and lanterns. NO. T44G GENERATOR Is used on later style Coleman Quick- Lite lamps. ALWAYS USE GENUINE COLEMAN MANTLES. NO. 21A COLEMAN SILK- LITE MANTLES SELL AT 10c EACH. SIX MANTLES SELL AT 50c. TWELVE MANTLES SELL AT $1.00. SERVICE INSTRUCTIONS FOR COLEMAN INSTANT-LITE LAMPS AND LANTERNS Aside from the Instant-Lighting Mechanism, the Instant-Lite Lamps and Lanterns are constructed about the same as the Quick-Lite Lamps and Lanterns. When ready to light Instant-Lite Model, open the valve one-fourth turn. This permits the cleaning needle to extend through fuel tip at bottom of fount. Gasoline will then feed through orifice in fuel tip in a limited amount. At the same time air pressure from the top of fount will feed down through the opening in fuel tube at bottom of valve. This air will mix with gasoline at fuel tip. The mixture will then pass up through small tube on inside of larger tube, to feed through generator into burner casting in the form of a mist or spray that will light instantly in the mantles. The heat from the light at mantles will in a few seconds preheat the generator to the extent that the gasoline will be changed from a mist or liquid to a gas. At this time the light in mantles will be clear and white, the valve should then be opened as wide as possible. Opening the valve as wide as possible permits spring at bottom of valve body to lift needle all the way out of fuel tip at bottom of fount. Gasoline will then feed through orifice in fuel tip fast enough to fill fuel tube in fount, thus preventing any further loss of air pressure through fuel wire and out the generator. It is very necessary therefore, to open valve as wide as possible not just a turn or two but all the way. Unless this is done, the Instant-Lighting Mechanism will continue to function to a certain extent and there will be a rather rapid loss of air pressure from fount, up through the generator. There is very little chance for anything to get out of order with the Instant-Lighting Mechanism. If gum or corrosion eventually collects on needle, it may prevent gasoline from feeding through fuel tip with valve V\ open.
Lamp would then fail to light because nothing but air would feed out through generator. In order to correct this situation, scrape gum from that part of needle that extends through fuel tip at bottom of fount. KEEP BURNER PARTS CLEAN Keep burner parts of lamp or lantern clean, especially screens in burner caps. Dirty screens will retard flow of gas to mantles with the result that the light in mantles will be yellow and smoky and black spots will appear on mantles. Each time before installing new mantles, use a small brush, such as an old discarded tooth brush, to clean screens in burner caps. Keep lamp or lantern operating at full capacity with a clear white light in mantles. There will then be ample light to read by and also a sufficient amount of heat to break up the gasoline as it feeds through generator, thus prolonging the life of generator. Rotate the cleaning lever frequently. Keep plenty of air pressure and clean, fresh gasoline in fount. If lamp or lantern is to be left unused for several days or weeks, it would be well to empty the gasoline from fount, thus preventing the gasoline from souring and forming gum in fount. To test built-in pump, for an air pressure leak, have plenty of air pressure in fount, then turn plunger to right in order that air stem will be screwed into check valve. Turn fount on side with pump down and hold end of pump in a glass full of water. Air bubbles would indicate a leaky valve. Check valve may be easily removed from bottom of pump barrel with screw driver. Should it ever be necessary to install a new eccentric block in valve, be sure to notice the position of old block before removing it. The new eccentric block must be installed correctly or the eccentric lever cannot be rotated. Coleman Lanterns were manufactured primarily to be used outside and when so used will withstand most any kind of windy or rainy weather. If the Lantern is to be used inside as a lamp, then the dome or globe should be removed. The dome would reflect the heat down toward the fount while the globe is in place. If there are flying insects about which might damage the mantles, then leave the globe in place but remove the ventilator. This will permit a free circulation of air up around the burner. YOU WOULDN'T DRIVE YOUR CAR VERY FAR WITH IT MISSING ON ONE CYLINDER WOULD YOU? THEN DON'T OPERATE YOUR COLE- MAN LAMP WITH A WEAK, YELLOW FLAME, FOR IF YOU DO, THE EXPENSE OF OPERATING IT WILL BE INCREASED CONSIDERABLY. No. T66 Roto-Cleaning Generator. For use only on Coleman Lanterns, Nos. 242, 242A, 242B, 234, and 243. Don't use the T66 Generator on the two mantle lamps and lanterns for it should be used on the one mantle lanterns only. No. T44G Roto-Cleaning Generator. For use on lamps and lanterns Nos. 117A, 118A, 119A, 220B, 228B, 134G, 133, 134P, 132A, 150B, 150G, 1501, 150R. The only visible difference between the T44K Kerosene Generator and the T44G Gasoline Generator is that the cleaning needle may be removed from the T44G Generator, while in the T44K Generator the cleaning needle is held in place with a small brass block.
INSTRUCTIONS FOR SERVICING AND OPERATING COLEMAN KEROSENE LAMPS AND LANTERNS When operating the kerosene lamp or lantern, it is well to bear in mind the importance of keeping the generator hot. The alcohol cup is provided to hold an ample amount of denatured alcohol to insure complete generation. The pyrex globe or mica chimney of course must be left in place in order that the heat will be held around generator. Do not use the kerosene lamp or lantern without the pyrex globe or chimney. KEEP ALL JOINTS TIGHT As compared to gasoline, it seems that a tighter joint or connection is required for kerosene. It is absolutely necessary, therefore, that before the valve and burner are installed on the fount that the threads in the top of fuel tube that extends up through handle be filled with soap. Unless this treatment is given the threads, there will eventually be a kerosene leak at bottom of valve. The kerosene would leak down through the handle and by coming out from under handle make it appear as though the fount were leaking at top. There is a limit to the amount of air pressure that may be used in the kerosene fount. About 35 or 40 pounds is the maximum. Just a sufficient amount of air pressure should be maintained in the fount to produce a clear, white light in the mantles. The first indication of excess air pressure in the fount will be the appearance of yellow pointed flames shooting through the mantles. Black spots will then collect on mantles at such points. To correct situation, just release some of the excess pressure back through filler plug air stem, At the same time use the pump to force air up through the air intake tube that supports burner and the black spots will soon disappear from mantles. The metalastic packing in valve stem pack nut may cut out just a little at first or until it gets properly seated around stem. If a slight leak occurs at pack nut, just tighten part of a turn to correct. KEEP BURNER PARTS CLEAN Use a small brush such as a tooth brush to clean burner parts. This should be done each time before new mantles are installed. It is very important that screens in burner caps be kept clean and free of smoke and corrosion, in order that the gas will feed through freely to mantles. The action of the gas feeding through generator gas tip draws air up through air intake tube. It will be readily understood, therefore that dirty or smoky burner cap screens would interfere with the free flow of gas to the mantles, with the result that a slight back pressure would then be created in the burner mixing chamber. This in turn would cut down the amount of air drawn up through the air intake tube with the result that the mixture would then be so rich that it would burn with a yellow, smoky flame in mantles instead of a clear, white light. A yellow light isn't every good to read by and it will not produce a sufficient amount of heat to break up the fuel as it feeds through the generator. THE OLD SAYING THAT "THE BEST IS THE CHEAP- EST" IS ESPECIALLY TRUE OF A COLEMAN KERO- SENE PRESSURE LIGHT. KEEP LANTERN OR LAMP OPERATING AT FULL CANDLE POWER TO HAVE AN ABUNDANCE OF BEAUTIFUL WHITE LIGHT AT LESS EXPENSE.
Do not attempt to use kerosene in a Coleman Gasoline Pressure Lamp. The Coleman Kerosene Lamp or Lantern, however, may be operated with either kerosene or gasoline. If possible to do so, avoid dripping any denatured alcohol on the fount. However, if any alcohol should be dropped on fount, do not attempt to wipe it off. Just let it evaporate and the damage to the finish on fount will hardly be noticeable. Keep extra mantles and generators on hand and thus be assured of uninterrupted service. NO. T44K Roto-Cleaning Generator. For use only on Kerosene Lamps Model Nos. 120, 129G, 150BK, 150GK, 150IK, 150RK and Kerosene Lantern No. 235. The No. T44K (Kerosene) Generator may be easily identified by the fact that the cleaning needle is not removable from the generator tube, for it is held in place with a small brass block. COLEMAN "INSTANT LIGHTING MODEL" CAMP STOVES AND AUTO TRAILER STOVES The Instant-Lighting mechanism is built into the shut-off valve at the tank. Turning the starting lever to "up" position pushes a needle down through orifice in fuel tip at bottom of tank and this limits the amount of gasoline that may feed through fuel tip. Opening valve stem permits a limited amount of gasoline to feed up through valve. This limited amount of gasoline isn't sufficient to fill the fuel wire so air pressure from the top of tank will feed through small opening above the gasoline level in fuel wire. This air pressure mixes with the gasoline as it feeds through fuel tip and the two together pass up inner fuel wire, up through valve and out through generator in the form of a mist or spray which will light instantly. It is important when lighting the camp stove to open generator valve stem wide and open it quickly. "Give it the gun," so there will be a hot blue blast flame that will preheat the generator in about one minute. Don't permit flame to burn too high, but keep it burning high enough to be real active. After about one minute, the generator will be sufficiently hot to change the gasoline that feeds through it from a liquid to a vapor. At that time it is necessary to turn starting lever to "down" or operating position. Unless this is done, the instant-lighting mechanism will continue to function and there would be a rather rapid loss of air pressure from the tank. Ample pressure should be maintained in tank to produce an active blue or slightly orange colored flame on burners. An orange colored flame isn't smoky it is the yellow flame that makes smoke. Ordinarily when the generator is new it will, if left wide open, produce more gas than may be efficiently consumed on one or even two small burners. The result will be a yellow, smoky flame which isn't nearly so hot as the blue flame. Keep generator regulated enough therefore, to maintain a hot, blue flame on burners. Eventually the cleaning needle which extends down through fuel tip, may cover over with gum and corrosion to the extent that it will completely fill orifice in fuel tip. If this occurs, the stove will be hard to light for the mixture will be so lean that it will keep lifting up and floating away from burners. To correct, just clean the needle with fine emery cloth. Under certain atmospheric conditions and especially in the higher altitudes, there may be a slight tendency for the burner to flood while the stove is being instant-lighted. This isn't alarming for the few drops of raw gasoline that may happen to collect in the burner will soon vaporize and burn out.
Tilting the camp stove slightly will hasten the vaporization of gasoline in the bunsen, although this might cause some of it to drip down through the air intake opening. In extremely high altitudes, it is a good plan to have less air in the tank when instant-lighting. Excess pressure in tank will cause flame to rather blow away from burner, thus aggravating the tendency to flood. Immediately after lighting burner, pump about ten more strokes of air into the tank. After the generator has been sufficiently pre-heated, turn instant-lighting lever down, then add any desired amount of pressure to the tank. Closing the valve firmly to the right makes a positive shut-off, at the valve body and not at the gas tip end of the generator. The several drops of gasoline, which at that time, will have been trapped in the generator barrel, will vaporize and feed through gas tip to continue the flame on burner for about one and one-half minutes. It will help some to prevent fumes if you will first turn starting lever back to "up" position and operate stove for thirty seconds before closing generator valve stem. To test the valve and generator assembly for shut-off, have plenty of air pressure in tank. Stand tank on end so gas tip end of generator may be held in a glass of water. Open valve stem and notice appearance of air bubbles in water. Close valve stem firmly and if no more air bubbles appear in water, you may be sure valve shuts off properly. If valve fails to shut off, then unscrew valve stem and examine seat in valve body. An obstruction of some kind such as a broken thread or some loose packing may have lodged in the seat. Burned match heads or dirt will perhaps eventually collect around and under burner caps with the result that yellow tongues of smoky flame will appear at such points. Unscrew bolt and lift the burner cap off if necessary in order to clean under cap. EMPTY TANK OCCASIONALLY When the Camp Stove is to be left unused for several weeks, it is an excellent plan to drain all gasoline from the tank out through the valve bushing. Gasoline left in tank will sour, with the result that gum will form and clog generator as well as instant-lighting mechanism. After each camping trip, therefore, be as careful about cleaning tank and other parts of Camp Stove as you are about cleaning your fishing tackle or gun, and your Coleman Camp Stove will render you the same long and faithful service as your other equipment. A generator is merely a device for holding gasoline in the flame in order that the heat from the flame will change the gasoline from a liquid to a vapor. In other words, the generator is a miniature gas plant. The substances in the gasoline which do not vaporize collect in the generator in the form of carbon and gum. It will be necessary, therefore, at times to disassemble and clean the generator. And it is a very good plan to always carry an extra generator along as a spare. If your stove is an oven model, then remember that the generator will hardly provide enough gas for the oven burner and cooking top burners at the same time. Before you expect to use the oven, operate oven burner alone until oven has reached baking temperature, then place material to be baked in the oven before turning flame down on oven. There will then be enough gas for one or more of the cooking top burners providing you don't turn them too high. SHOULD YOU HAVE OCCASION TO WRITE TO THE FACTORY ABOUT THE CAMP STOVE OR ANY OTHER COLEMAN APPLIANCE, BE SURE TO MEN- TION THE MODEL NUMBER OR DESCRIBE THE APPLIANCE IN DETAIL SO THAT WE MAY DEFI- NITELY IDENTIFY IT FOR YOU.
SERVICE INSTRUCTIONS FOR NO. 16 INSTANT-LIGHTING RADIANT HEATER The instant-lighting feature of this heater is incorporated in the No. 485-657 Instant-Gas Valve. Should you have occasion to remove this valve from the tank, it will be noticed that, when the valve wheel is opened one-fourth turn as in "starting position," the needle still extends through fuel tip. This limits the amount of gasoline that may feed through tip; therefore, air pressure then feeds down through opening in fuel wire, just under valve body, to mix with gasoline as it feeds thru tip. This mixture next feeds up through small feed wire on inside of larger tube, then through generator into burner casting in the form of a spray that lights instantly. Opening valve wide as possible pulls needle clear out of tip and permits gasoline to fill feed tube, thus automatically shutting off any further loss of air pressure down and out through feed wire. It is very necessary, therefore, to open valve as wide as possible or there will be a rather rapid loss of air pressure from the tank out through generator. Eventually gum and corrosion may collect on needle to the extent that gasoline won't feed through tip at all with valve one-fourth open. The flame will then float away from radiants or radiants will fail to light. To correct the situation, use a knife blade to scrape gum from needle after you have removed valve and disassembled it. Sometimes a fine, powdery carbon will form in the generator and when lighting heater or after heater has been in operation for some time, this powdery carbon will start collecting in orifice of gas tip. Flame will then almost go out. Closing and opening generator valve stem quickly several times while at the same time tapping lightly on generator barrel with some light tool will usually dislodge such carbon and force it on through gas tip. Keep pack nut on generator valve stem loose enough that valve stem will turn easily, yet keep it tight enough to prevent a gasoline leak. TO CLEAN GENERATOR Eventually generator may fill up with carbon and gum to the extent it will have to be disassembled and cleaned. Clamp barrel of generator in a vise, then unscrew valve body with valve stem from barrel. Use small hook to pull coil from generator barrel. Scrape all carbon from inside barrel, then install new coil and reassemble valve body with valve stem. Don't put too much air pressure in tank before lighting heater, for the No. 16 Heater will usually light best with low air pressure. Add more pressure after heater has been lighted. In extremely cold weather the burner may have a tendency to flood for the gasoline spray may condense in the cold casting. A yellow lazy flame in radiants is usually an indication of a flooded burner. Drain raw gasoline from drain plug provided at back of heater. Keep burner parts clean. Use pump to blow dust out of lava burner caps under radiants and thus prevent fumes. When tank assembly is in position, make sure that gas tip end of generator fits freely into burner casting. In other words, make sure that gas tip end of generator does not carry any of the weight of tank, for if this happens the generator will perhaps warp or bend. At end of season empty all gasoline from tank through air valve bushing before putting heater away for summer. Such gasoline, if left in tank, would sour and form gum during warm summer. This gum, in turn, would later produce carbon in generator.
Oil pump leather frequently to keep it soft and pliable. Don't let nipple on end of pump barrel get dented or damaged. It is a good plan, when they are available, to keep an extra generator on hand and thus insure uninterrupted service. When old generator has been removed from heater, clean it and have it on hand for a spare. You will be interested to know that the old generator may be rebuilt equal to a new one inso far as service is concerned if it is returned to the factory. The No. 486-262 generator is the one used on the No. 16 Heater. SERVICE INSTRUCTIONS FOR NO. 5, No. 5A AND NO. 5B HEATERS The lighting and operating instructions are more or less alike for the No. 5, No. 5A and No. 5B Coleman Radiant Heaters. These heaters are all equipped with the Thermo Safety Generator a generator with a safety valve that won't open until the barrel on generator has been preheated to a certain temperature. Before opening preheater valve to light preheater, be sure that fuel valve and generator valve stem are open. It is quite important to keep the preheater in first-class operating condition in order that when first lighted it will produce a hot blue blast flame. If flame is yellow, then clean cup and goose neck part of preheater cup. If flame floats away or blows out, remove preheater valve from tank and clean orifice in fuel tip on end of fuel wire that extends to bottom of tank. A hot blue blast flame from preheater should preheat master generator sufficiently in about thirty seconds to open automatically the thermo safety valve in master generator. All radiants should at that time light instantly. If the thermo valve is a few seconds slow in opening, the radiants may not all light up blow lightly against flame and it will float across to other radiants. If thermo Valve opens a few seconds too soon, the flame in radiants may be a little yellow for a few seconds. In any event it is always a good plan to let the preheater operate for a minute or so after the radiants light up in order that it will hold the thermo valve wide open until the three pilot burners get hot enough to hold it in that position. Keep burner parts clean. Use tire pump to blow out dust or dirt that may have settled in lava burner caps under radiants. Don't attempt to operate heater with flame too low, for a sufficient amount of flame must be maintained at the three lava burner caps to carry on generation. Oil pump leather occasionally. SEND GENERATOR TO FACTORY FOR CLEANING Do not attempt to disassemble master generator, for it is practically impossible to reassemble it satisfactorily without special gauges or tools to set the thermo safety valve. When generator eventually fills up with carbon or gum, take it to your dealer or send it to factory with $1.50 and it will be renewed and returned postpaid. Before putting heater away for the summer, it is always a good plan tc empty all of the gasoline from tank thru one of the valve bushings. Gasoline left in tank during summer would sour and form an excessive amount of gum that would soon clog generators. It is also a good plan to stuff a rag in opening of manifold thru which gas tip end of generator extends in order to prevent a spider or some other insect from crawling in and making a nest. Frequently heaters won't work in the fall on account of some such nest or obstruction in bunsen or manifold. Should it be necessary to write to factory for additional instructions about heater, be sure to mention model number of heater. The No. 475-389 Preheater Generator is for use on No. 5 and No. 5A Heater. The No. 475B Preheater Generator is for use on No. 5B. The No. 475-303 Radiants are used on nearly all models.
INSTRUCTIONS FOR SERVICING AND OPERATING COLEMAN AIR-O-GAS AND COLEMAN COOKER GAS PRESSURE RANGES AND STOVES MANUFACTURED PRIOR TO 1932 CLEAN TANK Make sure there is no dirt, water or sour gasoline in it. Oil Pump Leather, test valves and feed lines. If preheater won't stay lighted remove preheater valve from tank and clean fuel tip in the end of fuel tube that extends down into the tank. CHECK PREHEATER Run a wire through gooseneck part of preheater cup clean cup. Clean preheater generator gas tip or replace generator if necessary. DIS-ASSEMBLE MASTER GENERATOR Scrape carbon from inside generator barrel and from valve stem. Replace needle and tip if necessary. Then re-assemble and be sure to get generator clamp and saddle in correct position. One may have the old generator rebuilt equal to new ones insofar as service or operation is concerned by sending it to factory. USE A KNIFE With a thin steel blade to dislodge any corrosion or obstruction from slots of burner castings. Ruh a wire or wire brush through Bunsen or Manifold, to dislodge any obstruction that may have collected and might be interfering with the mixture. BLOW THROUGH Cooking top burners and oven burner with a pump or an air hose to thoroughly cleanse them. ADJUST AND CLEAN Sub-flame burner under Master generator, and the one under oven generator in order that they will produce clear blue flames over their entire lengths under the generators. The distance between the subflame burner and the generator should be not less than one-eighth of an inch or more than one-quarter of an inch. Also make sure that the sub-flame burner is directly under the generator, then the flame will spread evenly around the generator and keep it hot. These adjustments are especially important in order that there will be sufficient generation to insure having a clear blue flame on the oven burner, as well as on the Master burners when the generators are open wide. AFTER SERVICING Stove be sure to test all connections for leaks before lighting stove. DON'T USE GENERATOR FOR A SHUT-OFF VALVE When through operating stove, close fuel valve at tank, then as the flame dies down on the burner, close generator valve stem lightly. Closing and opening the valve stem also works the needle in and out of the gas tip, thus dislodging any carbon that might happen to lodge in the tip. DON'T USE EXCESSIVE FORCE In closing air stem after through operating the pump. The air stem screws into and seats in a brass check valve at the bottom of pump barrel. Excessive force in turning the pump plunger to the right might strip the threads or injure the seat in the check valve. DON'T LET BURNERS GET DIRTY If stove is to be left unused for some time, cover it so dust and dirt won't settle in the burner caps. Keep the burners free from any obstructions such as drippings from cooking vessels. DON'T LET LEATHER ON PUMP PLUNGER GET DRY- A few drops of oil on it occasionally will keep it soft and pliable and the pump will then have sufficient compression. DON'T HESITATE TO WRITE US Any time we may be of service in connection with the stove or any other Coleman appliance you may be using or servicing. Be sure, however, to advise us the model number or give us a complete description of it so we can identify it. Also let us have all of the details as to how it fails to operate properly, in order that we will have a clear understanding of the situation. We will then be in a position to give you complete instructions for correcting any difficulty. We are always intensely interested in the correct operation of each and every Coleman Appliance.
IF IT IS NECESSARY To burn one of the auxiliary burners in order to have a blue flame on master burner, then it will perhaps be necessary to clean slots in burner cap or replace cap. With the slots in cap warped or closed, gas will not feed freely thru cap and this in turn creates a back pressure in manifold to the extent that an insufficient amount of air is then drawn up thru air intake opening. The result would then be a very rich mixture that would burn with a yellow smoky flame. Opening one of the auxiliary burners would relieve the pressure sufficiently to permit more air to be drawn into manifold and the mixture would then be lean enough to burn with blue flame on master burner and auxiliary burner. 307-238 Needle & Holder.09* 307-218 Gas Tip.150 324-262 Generator These brass barreled generators are now obsolete, but may be replaced with the later style No. 940-262 Generator. When installing the later style generator, adjust clamp so that gas tip end of the new generator extends the same distance into opening in manifold as did the gas tip end of the old generator. INSTRUCTIONS FOR OPERATING AND SERVICING COLEMAN INSTANT-GAS STOVES MANUFACTURED 1932-1933 See that all valves are closed. Fill tank with fresh, clean untreated gasoline, straining it into the tank. Pump about 20 pounds pressure into the tank. To light, first open the Instant-Gas valve on the tank V\ turn, then open the main generator just enough to light the burner and give an active flame. Allow this flame to burn for one minute, then hold down the safety-lock on the Instant-Gas valve and open the valve as far as it will go AT LEAST TWO OR THREE COMPLETE REVOLUTIONS. During the one minute period when the Instant-Gas valve is opened to V4 turn, the tank will lose from four to six pounds pressure, but as soon as the Instant-Gas valve is opened as far as it will go, it is supplying a full flow of gasoline to the generator and no loss of pressure will be experienced except as the fuel is consumed from the tank. When the Instant-Gas valve is opened to one-quarter turn and the generator valve is opened, a spray mixture of gasoline and air is being shot into the burner manifold. Some of the heavier parts of the gasoline may lodge on the walls of the mixing chamber and not reach the burner manifold to be consumed. This sometimes results in a few drops of gasoline dropping down through the air intake openings, but it is the heavier, less volatile parts of the fuel and it is not sufficient to create a hazard. It stops as soon as the Instant- Gas valve is opened wide and the small amount that may drop down evaporates quickly.
There is no liquid fuel stove that does not throw off a certain amount of odor immediately after the burners are turned out. When the Instant-Gas valve is closed, the pressure is removed from the burners. This leaves a certain amount of gas vapor inside the burner manifold that is not forced out to be consumed. This will work its way up through the slotted burner caps and create a slight odor. Proper ventilation will soon carry this away. Connect stove to chimney if possible. The odor may be greatly lessened by turning out the burners properly. First, turn the Instant-Gas valve to the right until entirely closed. Now open it to VA turn and allow it to burn on the Instant-Gas mixture for about one minute. This has the effect of blowing out of the fuel tube, generator and burner manifold, the heaviest parts of the gasoline which produce most of the odor. Now close the Instant-Gas valve by turning valve wheel to the right and when flame on burner goes out, close generator valve firmly by turning to the right. Next open one of the auxiliary valves, and to a certain extent fumes will condense in manifold instead of passing out into air. Coleman ranges are equipped for connecting with the chimney and when so connected, most of the odor will be carried off through the chimney. If the lid of the Table Top model is closed as soon as the burners are turned out, the odor from the cooking top burners and from the oven is carried off through the chimney. Upon examining the No. 900-657 Instant-Gas Valve used on this type of stove, it will be noticed that with the valve wheel turned to one-fourth open, starting position, the needle still extends through fuel tip at bottom of tank. A limited amount of gasoline, therefore, may feed through tip so air feeds down through opening in feed wire to mix with gasoline at tip. This mixture then feeds up through inner feed wire, out valve and through generator into burner manifold in the form of a spray that lights instantly on master burner cap. Opening valve wheel as wide as possible after holding down safety lock, backs needle all the way out of tip; gasoline then feeds through fuel tip fast enough to stop any more air from feeding up through valve. TO CLEAN GENERATOR Eventually gum and corrosion will perhaps collect on needle to the extent that gasoline won't feed through fuel tip at all with valve one-fourth open. The flame will then float away or lift up from burner, or burner will fail to light. To correct situation, use knife blade to scrape gum from needle. The oven generator and master burner generator are interchangeable. These generators may easily be disassembled and cleaned. Clamp generator barrel in a vise, then unscrew valve body from barrel without disturbing valve stem. Use a hook, which may be made by bending tapered handle end of a file, to remove coil from barrel. Scrape carbon from inside of barrel, then install new coil and reassemble valve body with stem. Keep burner parts clean and free of dirt or grease. If slots in master burner cap close up to the extent that gas will not feed through freely, a new cap should be installed. Oil pump leather frequently, in order that pump will function properly. Should it be necessary to write in about stove, be sure to mention the model number. "The old generator may be sent to us for handling under our generator renewal program."
1934-1935 STOVES WITH DIAL TYPE VALVES AND BAND-A-BLU BURNERS The information in the Direction Sheets that were furnished with these stoves was so very complete and detailed that there is very little to add. The operator should understand that when dial type valve is tripped to the No. 3 or Off Position that this shuts off only the gasoline at tank. Air pressure continues to feed through valve and out generator until generator valve stem has been closed firmly. Sufficient pressure should be used in closing generator valve stem to make a positive shut off. The later style positive shut-off valves used in tanks on later model stoves may be used in place of the dial type valves in tank on your stove. To test stove for pressure leak, mix up some soapy water and spread over affected parts with a brush or a rag. Air bubbles would denote location of leak. If oven isn't very often used it may happen that heat from master burner will dry out metalastic packing in pack nut on oven generator. Tighten pack nut part of a turn to stop leak. Or if oven is put in use the gasoline coming in contact with packing in generator pack nut will swell it to the extent that the leak will be stopped. TO CLEAN GENERATOR The oven generator and master burner generator are interchangeable. To clean generator, clamp barrel in vise. Unscrew valve body and valve stem from barrel without disturbing valve stem. Use a hook to remove No. 930-219 filler coil from barrel. Scrape carbon from inside barrel, then install new coil. When ready to turn out burner, one should have at least twelve pounds of air pressure in tank in order that there will be sufficient air force to clean fuel line and generator barrel of all liquid gasoline. Trip the dial type valve to the No. 3 or Off Position, then open generator valve stem another turn. The air in top of tank may contain enough gas to maintain a flame at burner, yet mixture will be so lean that flame will have a tendency to lift up from burner and cause imperfect combustion with the result that unpleasant fumes will pass off into air. In about thirty seconds the flame will change from a deep blue to a rather light blue and at this time close generator valve stem quickly and firmly. In other words, watch for flame to change color, then close generator and thus avoid fumes. TO CORRECT FUMES Fumes may be caused by air intake adjustment not being in correct position. The air adjuster is located just in front and below gas tip end of generator. After stove has been burning for five minutes, reach under with one hand and close or open air adjuster and notice action of flame. Adjuster should be closed about as much as possible and not produce a yellow flame. A yellow flame should not be confused with an orange flame. A yellow flame is smoky. An orange flame is not smoky, yet is just as hot as a blue flame and is usually the result of atmospheric conditions. The sub flame burner under generator is very powerful and if properly adjusted with a space of 3/16 of an inch between burner and generator will heat the generator barrel to a cherry red, thus greatly reducing carbon formation in generator barrel. The flame on master burner or oven burner may go out when turning dial valve from No. 1 to No. 2 position unless the generator is open wide enough to supply plenty of flame to carry past the slight lull that occurs at that time. Do not place material to be baked in oven until oven has been brought to correct baking temperature. The oven burner is very powerful and flame must
be cut down to hold oven to correct temperature or material will be over baked on bottom and under baked on top. Read and study the instruction manual for in it will be found answers to most service questions pertaining to the stove. If servicing stove for someone, question the user about the symptoms then light the stove and check the symptoms and thus be in a position to make a correct diagnosis. Or, if it is necessary to write factory, let us have all the details in the letter in order that we may be in a position to make the correct diagnosis and thus give you the necessary instructions for correcting the situation. Part Number 940-262 Generator Complete 940-212 Generator Tube 930-219 Filter Coil 930-253 Valve Stem 325-240 Valve Body & Nipple 325-418 Gas Tip 325-217 Gas Tip Bushing 308-238 Needle & Holder The old used No. 940-262 Generator may be sent to us where it will be rebuilt equal to a new one insofar as service or operation is concerned under our generator renewal program. SERVICE INSTRUCTIONS FOR COLEMAN SAFETY RANGES, 1936 to 1942 THE AIR ADJUSTMENT screw is located below the gas tip end of the generator on some models. On other models the air adjustment is a spring located just in front and below gas tip end of the generator. Have burner in operation for at least five minutes before making an adjustment. If the flame has a tendency to lift up or float away from the burner, then turn air adjustment screw to right or close spring a little. This will cut down the air and make the mixture richer. If you close air adjustment too much you will produce a yellow, smoky flame on burner. A LOW SIMMERING FLAME on an auxiliary burner may be produced by turning the auxiliary valve nearly off. Then regulate the height of flame under generator by closing or opening generator valve stem. Keep as much hot blue flame as possible under generator, but don't allow flame to be so high that it is yellow and smoky. THE PORCELAIN ENAMEL on the heat reflector bowls is nothing more or less than glass and paint on a metal surface. If the burners are used sufficiently hard there will be enough heat produced to melt the glass with the result that it will blister and crack. If this occurs use emery cloth or fine sand paper to again make the surface smooth. This will not interfere at all with the efficiency of the burners and will detract very little from their appearance. FUMES that smart the eyes are usually the result of a very lean mixture. To correct, close air adjustment a little. Fumes that have an objectionable odor may be caused by a loose burner cap, a dirty burner cap or the use of a large or rimmed cooking vessel that rests down over the grate. Keep burner caps and corrugated fillers clean and in their correct positions. Elevate any large vessel that is to be used by placing two iron bars that are about one-half inch thick under it. The secondary air may then feed under the vessel to burner and thus produce more perfect combustion.
GENERATOR INSTALLATION should be made correctly to avoid a warped generator barrel. Avoid using excessive pressure when tightening generator bracket set screw. Tighten just enough to prevent leak. The gas tip end of the generator should float freely in the mixing chamber opening. The generator bracket may be adjusted slightly if necessary to line up the generator. MAINTAIN SUFFICIENT FLAME under the generator to carry on the generator while stove is in use. Each time after turning out or changing the flame on burners, be sure to check and if necessary adjust flame under the generator. THE GENERATOR is really a miniature gas plant. The heat from the flame under the generator changes the gas from a liquid to a vapor. The gas as it feeds thru the gas tip end of the generator is too rich to burn correctly. Air is, therefore, admitted into the mixing chamber at that point. Any substance in the gasoline that doesn't vaporize would collect in the generator in the form of carbon or gum. The generator, if returned to us, may be completely rebuilt equal to a new one insofar as service or operation is concerned. WITH THE FLAME TURNED LOW on the burners, the cleaning needle in the end of the generator valve stem will extend through orifice in generator gas tip to the extent that fine powdery carbon may collect around the needle and shut off the flow of gas. It is a good plan, therefore, to clean the generator once in a while by quickly opening and closing the generator valve stem several times, while at the same time tapping lightly against the generator barrel with some light tool. Do this while the stove is in operation and you will notice specks or flashes of yellow in the flame as the fine powdery carbon passes through the burner. DON'T USE excessive force in tightening the filler plug or you may eventually strip the threads on the brass filler plug bushing. The filler plug is equipped with a gasket that will make a positive shut off without excessive pressure. DON'T TURN PUMP PLUNGER more than two full turns to left before operating pump. The air stem should not be screwed all the way out of check valve in bottom of the pump barrel, or it will follow the pump plunger, with the result that the threads on the end will finally be worn and damaged. OIL PUMP LEATHER occasionally to keep it soft and pliable and more efficient. TO TEST TANK for air leaks hold tank under water or spread soapy water over the connections. Air bubbles will denote location of the leak. WHEN ADJUSTING THE OVEN DOOR on the No. 740, 741, and 742 Stoves, you should understand that the two oven door hinges act as a sort of fulcrum. The springs pull the hinges forward a certain definite distance; hence the importance of having the door attached at the right angle to the hinges. TO ADJUST the oven door, first remove the handle and the front panel. Next, loosen the four small bolts which hold the oven door to the two hinges. Place a yardstick, or some similar object which is Vs of an inch thick, at the bottom of the oven door to hold bottom of door out that distance from front of the stove. While holding door tightly shut and lifting up on it, tighten the four bolts and the results should be entirely satisfastory. ALWAYS MENTION MODEL NUMBER of stove or describe it in such a way that it may be identified if you have occasion to write us at any time in regard to it. Also be specific about any service questions.
SERVICE INSTRUCTIONS FOR MODEL 457-458-460 COLEMAN HANDY GAS PLANTS The instant-lighting feature of this appliance is incorporated in the No. 900-657 Instant-Gas Valve. When the valve wheel is opened one-fourth turn, as in starting position, the needle, which is slightly tapered at lower end, still extends through fuel tip. Only a fine spray or vapor of gasoline can feed through tip while valve is in the "instant-lighting position" opened one-fourth turn. The air pressure feeds down through opening in fuel wire just under valve body, to mix with this fine vapor of gasoline as it feeds through tip. This mixture of air and vapor then feeds up through small feed wire on inside of larger tube, through generator into burner casting in the form of a carbureted mixture that lights instantly with clear blue flame. Opening valve wide as possible pulls tapered needle entirely out of tip and permits gasoline to fill feed tube, thus automatically sealing off any further loss of air pressure through feed wire. It is necessary, therefore, to open valve as wide as possible, after burning about one minute on "instant-lighting" position, or there will be a rather rapid loss of air pressure from the tank out through the generator. In rare instances, gum and corrosion may collect on needle to the extent that gasoline won't feed through tip at all with valve one-fourth open. The flame will then float away or lift up from the burner. To correct this condition, remove Instant-Gas Valve Stem from tank and scrape needle clean with knife blade. Fine powdery carbon may eventually form in the generator and when lighting heater or after heater has been in operation for some time, this powdery carbon may collect in orifice of gas tip. Flame would then almost go out. Closing and opening generator valve stem quickly several times, while at the same time tapping lightly on generator barrel with some light tool, will dislodge carbon and force it on through gas tip. Burning carbon will produce yellow specks in the flame. Keep pack nut on generator valve stem loose enough that valve stem will turn easily, yet tight enough to prevent leakage of fuel. In extremely cold weather the burner may show some tendency to flood from condensation of the gasoline spray in the cold casting. A yellow, lazy flame on burner is usually an indication of a flooded burner. To correct this condition, turn burner off and drain raw gasoline through drain plug provided at bottom of burner casting. KEEP BURNER PARTS CLEAN Keep burner parts clean. Burned match heads or dirt under the burner cap on the No. 458 will produce tongues of yellow flame. Unscrew bolt then lift cap up if necessary in order to clean under the cap. On other models use a thin knife blade to open and clean slots in burner cap. Do not attempt to operate the burner with flame turned so high that it is yellow, flaring, and inefficient. Regulate generator valve so as to produce an active, hot, blue flame. The generator is merely a device which changes the gasoline from a liquid to a vapor in the heat of the burner. Substances in the gasoline that do not vaporize, collect in the generator. It is, therefore, extremely important to use only approved brands of gasoline. (See approval list). It is always a good plan to keep an extra generator on hand and thus insure uninterrupted service. When old, carbonized generator has been removed from heater, clean it and have it on hand for a spare.
552-262 GENERATOR PARTS 486-262 GENERATOR PARTS 308-238 Needle & Holder 325-217 Gas Tip Bushing 325-418 Gas Tip 551-240 V. Body & F. Nipple 552-253 G. Valve Stem (Less Cleaning N. & H.) 552-212 Generator Tube 552-219 Filler Coil 552-262 Chrome Alloy Gen. 486-262 Generator Complete 486-212 Generator Tube 479-219 Gen. Filler Coil 486-253 Valve Stem Complete 479-217 Tip Protector 479-218 Gen. Gas Tip 472-238 Needle & Holder 558-262 GENERATOR PARTS 558-262 Generator 552-212 Generator Tube 552-219 Generator Filler Coil 558-253 Generator Valve Stem 558-238 Needle & Holder 558-218 Gas Tip 325-217 Gas Tip Bushing 551-240 Generator V. Body & F. Nipple HERE'S HOW TO CLEAN THE GENERATOR: Clamp the tube of the generator in a vise, then unscrew the generator gas tip protector to remove gas tip. Next, unscrew the generator valve body from the generator barrel, and with a short hook of some kind pull the coil out far enough to enable you to grasp it with a pair of pliers. The filler coil will be pulled out of shape in removing it from the generator barrel, so it will be necessary that you have a new one to install. A suitable hook for removing the filler coil may be made by bending the tapered handle end of an ordinary flat file. After the generator barrel has been cleaned and is free of carbon, install a new filler coil, also new gas tip and needle if required. Clean carbon from valve stem with sand paper, then reassemble. The following special tools are very convenient for cleaning generators and may be purchased from The Coleman Lamp and Stove Company. 599-817 Coil Puller 599-809 Carbon Scraper 599-812 Tube Cleaning Brush If the old generators are sent to us they will be rebuilt equal to new ones insofar as service or operation is concerned under our generator renewal program.
COLEMAN OIL HEATERS The efficiency of the Coleman Pot Type Oil Heater depends to a great extent upon the chimney draft. The draft or pull up the chimney draws air and oxygen for combustion through the holes or openings in the sides of the fire pot. There must be the correct amount of air mixed with a certain amount of fuel for correct combustion. In other words, the draft for an Oil Heater is the equivalent of what the ignition and spark is to a gasoline motor. Unless there is sufficient draft through the Heater, the mixture will be too rich, the flame will be smoky and produce soot. Before you attempt to service an Oil Heater, it is always well to make sure that the fire pot is clean and free of soot and carbon. With a wire brush, dislodge carbon from the walls of fire pot so that the holes are open and unobstructed. Scrape or scoop carbon from bottom of fire pot with a small piece of tin or cardboard. If stove pipe is partly filled with soot, then clean it and also clean chimney. Remove clean-out plug at back of Heater, then run a rod through the pipe to dislodge any carbon that may have been forced back into the feed pipe, while you were cleaning the fire pot. If carbon is hard, it may be necessary to use a dull knife to chip it loose. When lighting the Heater, don't crowd it along too fast. Let the Heater burn two or three minutes before fuel control is turned to next position. If fuel is turned on too rapidly, it will accumulate in the bottom of fire pot faster than it will be vaporized. Then later when the heater is sufficiently hot, it may burn with quite a roar while excessive accumulation of fuel is being vaporized and consumed. If it happens when lighting heater that draft up chimney blows the lighted torch out before fuel ignites, just hold door open for a few seconds or until fuel ignites. If the Heater produces too much soot or you can see smoke coming out top of chimney, increase the draft. To do this, you should first have had heater in operation for fifteen or twenty minutes, so it will be hot. Set oil feed at high, turn knob on draft regulator clockwise until haze clears up so you can clearly see the head of screw which attaches flame ring to the pot. Now turn knob on draft regulator anti-clockwise until a haze starts to dim vision inside of heater. The most efficient flame is one that is golden in color and provides the most illumination. Turning knob on draft regulator anti-clockwise causes flap to stay open more of the time. With flap open, less air will be drawn through Heater while with flap closed all the draft pull is through the Heater. Should you be unable to increase the draft enough to clear up the smoke or haze in flame, then you have two alternatives; the first is to turn control back to five or to a lower position where oil flow balances with draft. If this does not produce enough heat, then do some work on chimney. Clean it out, stop all cracks or openings and if necessary, increase height of chimney. Write The Coleman Lamp and Stove Company for additional information or consult some competent building contractor. In some instances where the house is of two-story structure and the chimney is quite tall or in the colder localities, it may be necessary to install a second draft regulator to cut down the draft. One indication of excessive draft is when the flame darts and jumps, first to one side of heater, then to the other like a kite on a windy day. Another indication is when flame won't lift out of burner but has a tendency to boil in burner. An excessive draft causes waste of fuel. We recommend the Coles Draft Regulator to be used in connection with the regular Walker-Junior when an additional draft diverter is necessary. Write to The Coleman Lamp and Stove Company for additional information. A high wind or cold weather increases draft, while warm weather decreases draft. If the draft is correct, then the flame should, with the fuel control turned on full, come well up into the combustion chamber to or even above the outlet vent. If the flame doesn't do this and more heat is needed, then close fuel valve in the tank; wait until flame dies down in the Heater to clean the screen in the Constant Level Valve so fuel will flow through freely.
The Constant Level Valve is a float-regulated device. If it is out of level one way, the flow of fuel through it will be increased, while if it is out of level the opposite way, the flow of fuel will be decreased. Be sure, therefore, that valve is level. Use a shingle to block up under heater when leveling it or if the heater is on a stove board, block up under one side of stove board. If there is any cold air coming in around doors or windows, then by all means use weatherstripping for excessive cold air infiltration prevents warm air circulation. One-eighth of an inch leak around a door is about the equivalent of an opening four inches square and, of course, you would close such an opening. When storing heater for summer, remove screen from Constant Level Valve and drain fuel from both tank and valve. Clean soot and carbon from inside of heater, then with a cloth or paint brush, dipped in the fuel oil removed from the tank, paint the inside of- the heater and all unpainted parts to prevent rust during summer. Heater will then be in first-class operating condition for the next season. But be sure to clean chimney before installing heater in the fall. If your heater has heat adjusting doors, you should remember that it only circulates the heat when the doors are closed. With doors open, the heat produced is radiant heat which only heats area near heater. ALWAYS MENTION MODEL NUMBER OF HEATER WHEN WRITING ABOUT IT. MODEL NUMBER MAY BE FOUND IN UPPER RIGHT HAND CORNER OF NAME PLATE ATTACHED TO BACK OF HEATER.