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Ultra 250/600/1300 Propane Unit User Manual
Table of Contents: You should be familiar with the information in this manual before you operate your equipment. This manual is structured so that it can be used for your reference.

All information, illustrations and specifications contained in this manual are based on the information available at the time of production. THERMA-KLEEN™, Inc. reserves the right to make changes at any time.


Models U250 U600 U1000 U1300
Max Input Temp 140°F/60°C
Max Output Temp 350°F/176°C
Output Pressure 250 psi/17 bar 600 psi/41 bar 1000 psi/67 bar 1300 psi/85 bar
Water Volume 2.0 GPM 1.5 GPM 2.2 GPM
Fuel LP Gas
BTU/hr 130,000 200,000
Motor H.P. 1/3 1/2 1.5
Electrical Req. 120vac 8amps 50/60hz
240vac 4amps 50/60hz
120vac 13amps 50/60hz
240vac 7amps 50/60hz
Fuse Type:
ABC auto
10 amp 20 amp
Dimensions 18"w x 23"d x 32"h 24"w x 28"d x 36"h
Weight 90-95 lbs 95-100 lbs 180-185 lbs 190-195 lbs
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Standard Accessories

Standard Accessories
Models U250 U600 U1000 U1300
Steam Hose 25 ft. 50 ft.
Fan & Blast Nozzle Yes
Remote Control
Trigger Gun
4 ft. Wand Yes
LP Gas Regulator Yes
LP Tank Restraint Yes
Internal Chemical
No Yes
Fuel Pressure Gauge Yes
Output Temperature
Gauge With High Limit
Electronic Ignition Yes
Output Pressure Gauge No Yes No Yes
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Optional Accessories

  1. Industrial Inlet Water Hose
  2. Inlet Water Softener
  3. Steam Hose Extensions (25', 50', 100')
  4. External Chemical Injection System
  5. Snub Nose Wand
  6. 2.5 ft. Wand
  7. Sewer Cleaning Nozzle
  8. Stack Cleaner
  9. Duct Cleaner
  10. Surface Cleaner
  11. 30 or 40 lbs LP Tank with optional gauge
  12. Stainless Steel Coils
  13. Stainless Steel Heat Deflector
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Operating Instructions

Start Up

  1. Connect machine to 120vac, Grounded electrical service. A 14 or 12 gauge 3 prong extension cord is required. Using an improper extension cord could cause damage to the machine and erratic operation.
  2. Connect a garden hose to the inlet water fitting located on the side of the machine.
  3. Connect a steam hose to the water outlet quick connect or european fitting at the side of the machine.
  4. Connect the wand to the steam hose end.
  5. Connect the LP Gas regulator to the LP tank. The threads in the tank fitting are reversed. Do not over-tighten the fitting. Make sure the LP tank is in proper upright position to supply only Vaporous LP gas to the machine. See LP Gas section for information and precautions when handling LP Gas.
  6. Connect the LP Gas hose to the connection on the control panel.
  7. Open the fuel valve completely on the LP tank.
  8. Check the fuel pressure gauge on the machine to make sure the pressure is below 6 lbs.
  9. Remove the nozzle at the end of the wand.
  10. Turn the water supply source on completely.
  11. Open the ball valve or squeeze the trigger on the wand.
  12. Turn the Pump switch On and let the machine run until the pump runs smoothly and the water isn't sputtering.
  13. Turn the Pump switch Off, close the ball valve or release the trigger on the wand.
  14. Clean any debris from the nozzle tip and replace the nozzle on the end of the wand.
  15. Holding onto the wand, open the ball valve or squeeze the trigger on the wand.
  16. Turn the Pump switch On. There should be good steady pressure at the wand tip. If you are having trouble see Low Pressure trouble shooting section for help.
  17. To light the burner you need to start with the fuel pressure at around 2 to 3 lbs. You cannot adjust the pressure regulator until the pilot is engaged and gas pressure is released. You will hear a Click when the pilot solenoid opens to let gas flow to the pilot assembly.
  18. Turn the Ignition switch On. You should hear the Click. Adjust the fuel pressure to 2 to 3 lbs and wait for the burner to light. If the machine is new or has not been connected to LP for 12 hours or more it will take time for any air to be purged out. Wait 30 seconds for the burner to light. If it does not light then cycle the Ignition switch Off then On, waiting another 30 seconds for the burner to light.
  19. With the burner firing, adjust the gas pressure to get the desired output water temperature. A small adjustment in gas pressure will take a minute or two to affect the output water temperature. Do not run any machine above 6 lbs of fuel pressure or damage to the machine could result.
  20. Use the above table of LPG pressure settings for corresponding temperatures with corresponding nozzles.
    Note: the machine has an output water flow safety switch to deactivate the burner if the ball valve is turned Off or the wand trigger is released while the machine is in operation.
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Internal Chemical Injection

This feature is to be found on the Ultra 1000 and 1300 Models Only. Safe chemicals to use are those that are safe to be in contact with skin. The consistency must be that of water for easy draw through the machine. After using chemicals, flush system by putting chemical pickup into clear water and running machine for a minute.

  • Drop the chemical pickup line into the chemical your using.
  • Turn the Soap knob on the control panel counter-clockwise until you are satisfied with the flow of chemical.
Warning: Leaving the Soap control open when not in use will cause air to enter the system lowering output pressure and can result in pump damage.

  • The chemical draw is set at the factory at 8 ounces per minute. The amount is regulated by an adjustment internal to the machine. If you are not satisfied with the factory setting, you can use the following procedure to make an adjustment to the regulator on the inside of the machine. The front panel must be removed first to gain access to the control. Extreme Caution must be exercised due to exposed hazards with the front panel removed:
  • Ultra 1000 - A black knob on the top of the pump head. The knob is calibrated in nine steps. Turning the knob counter-clockwise will increase the amount of chemical draw.
  • Ultra 1300 - The adjustment block is at the bottom of the input water assembly. A brass knob with a locking ring has a small clear plastic hose connected to the block with the opposite end connected to the Soap control on the control panel. Turn the locking ring clockwise to unlock the control knob. Turn the outer most control knob counter-clockwise to increase the chemical draw.
Warning: Mis-adjusting the chemical limit control can starve the pump of water and cause a decrease in output pressure. This can result in pump damage.

  • Adjustment - with the machine in operation, chemical pickup tube in the chemical and Soap knob opened all the way, chemical should be drawing. Verify you have chemical draw by picking up the chemical tube out of the chemical to allow air bubbles into the tube, then drop the tube back into the chemical. The bubbles will move up the tube and give you a visual gauge of the rate of chemical draw. Now make the adjustment watching the movement of bubbles up the tube. Continue the adjustment until you are satisfied with the amount of chemical application and draw.
  • Completed - For U1300's, lock the adjusting knob with the locking ring. Replace the front cover on the machine.
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Shut Down
  1. Turn the Ignition switch Off.
  2. Close the LP gas valve on the LP tank.
  3. Let the pump continue to run and cool the machine down to 120°F or below on the temperature gauge.
  4. Turn the Pump switch Off.
  5. Turn off the water and disconnect the power.
  6. Store the unit in a location that will stay above 32°F to prevent freezing the pump, coils, flow switch or temperature sensor. If this is not possible then the machine must be filled with anti-freeze. See Preventive Maintenance section for instructions on anti-freezing the machine.
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Preventive Maintenance

  1. Periodically inspect and clean the water inlet screen at the garden hose connection. Some machines may have a larger screen filter just behind the hose connection that can also be cleaned.
  2. Periodically inspect nozzle to make sure it is clean. A nozzle clogged with debris will cause the machine to run erratically and the burner to not light or light intermittently.
  3. Scale Build-up: Hardness or mineral content in water along with steam temperatures can eventually create a coating or build-up of scale in the interior plumbing of the machine. Excessive scale can shorten coil life, interfere with temperature controls and restrict the flow of water. The machine will not light or light intermittently if too much build up occurs restricting the flow of water. A good test for scale build-up is to remove the nozzle, run the machine and see if it will light and stay lit. If your nozzle is not restricted then the machine probably needs to be descaled. See Preventive Maintenance section for a procedure on descaling the machine.
  4. Freezing Temperatures: Temperatures below 32°F will damage coils, pumps, flow switches or temperature sensors. If the machine is to be stored in a freezing environment, it must be anti-freezed. See Preventive Maintenance section for a procedure on anti-freezing the machine.
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Descaling Procedure

  1. You will need:
    • A bucket that can hold a gallon of descalant.
    • Short length of garden hose (about 3 feet).
    • One gallon of descalant. Obtain THERMA-KLEEN™, Inc. approved descaling compound from your salesman or use equivalent product safe for aluminum.
    • Caution: Follow all safety procedures outlined on container of descalent.
  2. This procedure is performed without attaching the propane tank to the machine or a nozzle on the end of the wand.
  3. Connect the machine as in the start up procedure only you will NOT connect the propane tank.
  4. Prime the pump by running the machine without a nozzle to purge any air from the machine.
  5. Place the descalant in the bucket mixed according to manufacturer's instructions on the container.
  6. Attach the short length of garden hose to inlet of machine.
  7. Place the end of the garden hose into the bucket with descalant and also place the wand end into the same bucket.
  8. Make sure the wand control is ON (open.)
  9. Turn the Pump switch On and let the solution circulate through the machine for about five minutes. Make sure descalent is circulating throught the machine by observing wand tip for flow of solution out of tip. If no solution is flowing, then start the procedure over and repriming the machine etc. until the descalent is circulating.
  10. Turn the Pump switch Off and remove the short length of garden hose.
  11. Connect the machine to fresh water and flush machine for a minute before using.
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Anti-Freezing Procedure

  1. You will need:
    • Automotive windshield washer fluid/anti-freeze or RV type "Pink" anti-freeze.
      Make sure the anti-freeze you use will handle the freezing temperatures in your area.
      1. For 250/600 one gallon of anti-freeze.
      2. For 1000/1300 two gallons of anti-freeze.
    • Short length of garden hose (about 3 feet).
    • Large bucket.
  2. The machine will be connected to a water supply and AC power only. You do NOT need to connect anything else to the machine.
  3. Connect the machine to a fresh water supply and AC power. Set the machine where the excess anti-freeze will not harm anything.
  4. Pour the anti-freeze into the bucket.
  5. Prime the machine by turning on the water, then turn the Pump switch to On for a few seconds, then turn Pump switch Off. Turn off the water and disconnect water supply.
  6. Connect the short length of garden hose to the water inlet. Hold free end of short garden hose in the bucket so it will draw anti-freeze.
  7. Turn the Pump switch to On. You should see water exiting from the outlet and the anti-freeze being drawn into the inlet because the level is decreasing in the bucket. It may take a moment for the anti-freeze to start flowing throught the machine. If the anti-freeze does not draw into the machine then prime again as above.
  8. Watch the water outlet on the machine for signs of anti-freeze. Be sure to keep the inlet hose down in the anti-freeze by tilting the bucket if needed.
  9. When you see anti-freeze at the outlet then turn the Pump switch to Off.
  10. Disconnect machine. It is now safe to store in freezing temperatures.
  11. Make sure you drain all hoses and wand of water before storing in freezing temperatures.
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Ultra 250/600/1300

The pumps used on these models are factory sealed and do not require lubrication or maintenance.

Ultra 1000

Lubricate cam bearing with molylithium No. 2 grease (automotive wheel bearing grease). Use a push-type or lever hand operated grease gun. Inject grease VERY SLOWLY to prevent damaging the bearing seals. Very little grease is required. DO NOT use an air powered grease gun as they develop too much pressure and will blow out the grease seals. Wipe any excess grease off of cam bearing cavity. DO NOT wash grease out with pressure washer.

Maintenance Frequency

For operation using input water below 140°F, lubricate cam bearing every 100 hours of operation or monthly (whichever comes first). For operation using input water above 140°F, lubricate cam bearing every 24 hours of operation).


In applications where F.D.A. approval is required, use one of these greases:
  1. Chevron FM2
  2. Mobile FM2
  3. Keystone Navastane SP Medium

For operation using input water below 140°F, lubricate cam bearing every 50 hours of operation or monthly (whichever comes first). For operation using input water between 140°F to 160°F (do not exceed 160°F), lubricate cam bearing every 12 hours of operation.

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Ultra 250 Lubrication

Lubricate with several drops of SAE 10 non-detergent motor oil once a year.

Ultra 600/1000/1300 Lubrication

The motor is factory lubricated and does not require further lubrication.

Ultra 250/600/1000 Overload

These motors are equipped with an Automatic thermal protector to guard against motor overload. The motor will stop and once it has cooled off sufficiently, the thermal protector will reset. If the Pump switch is left On, the machine could start suddenly without warning. Be sure to turn the Pump and Ignition switches Off and disconnect power while the machine is cooling down.

Ultra 1300 Overload

The motor is equipped with an overload protection that once tripped, must be reset manually. To reset the overload breaker:
  1. Disconnect the power cord and make sure the Pump and Ignition switch are in the Off position.
  2. Let the machine cool down.
  3. Remove the front panel to expose the pump motor.
  4. At the top end of the motor is a RED button facing the left side of the compartment.
  5. Using your index finger, push firmly on the button. You should hear and feel a Click. This will reset the breaker. If you are having trouble pressing the button, wear a glove and try pressing the button again. Never use anything other then your finger to press on the reset button or damage to the motor could result.
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Below are several sections to help you with potential problems that could arise while operating your machine. Please contact our service department if necessary.

Low Pressure

A drop in pressure can be caused by the following:

  1. Inlet water screen is clogged. This screen should be checked and cleaned periodically.
  2. Low inlet water pressure.
  3. Verify there are no kinks in the inlet water hose.
  4. Soap knob on control panel is open when no chemical injection is being used which allows air to get into the system. Close the Soap injection knob on control panel (turn clockwise).
  5. Air trapped in system. Remove the nozzle from the tip of the wand. Open the wand control and turn the Pump switch to On. Close the wand to stop the flow of water with the pump running. Count to 5, the pressure will build up. Now open the wand to release the pressure all at once. Let the water run for approximately ten seconds. Repeat this procedure several times to purge any trapped air from the system.
  6. Turn the Pump switch to Off and replace the nozzle on the wand tip.
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Internal Chemical Injection

  1. Filter on end of soap tube is clogged. Clean the filter.
  2. Kink in soap tube. Clear the kink.
  3. Soap knob on control panel is closed (turn counter clockwise to open).
  4. Remove front cover and verify all chemical injection tubes are properly connected.
  5. Adjust internal setting.
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Nozzle Clogs Repeatedly

Depending on the size of the nozzle (smaller nozzles tend to clog more often), some occasional debris accumulating in the nozzle is normal. Repeated clogging can be the result of an old pressure hose going bad. Small particals breaking off in the hose get trapped in the nozzle. Replace the steam hose if necessary.

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Burner Will Not Light

The following sections assume you have the THERMA-KLEEN™ unit connected to a water supply with adequate pressure. The high pressure hose and wand are attached to the outlet. When you are trying to light the burner you must have the water supply on and the pump running with the Wand on (open). Please refer to the burner assembly image below for location of components while troubleshooting.

Warning: Propane is liquid under pressure and boils (evaporates) into vapor at a very low temperature and release of pressure (valve open). All THERMA-KLEEN™ Propane units are designed to use the vaporous type of tank such as those used on barbeque grills. The top part of the tank where the valve is located must be oriented so that it has an air space for the vapors to exit the tank at the valve. If you have the tank oriented such that the valve will pickup liquid propane or the tank is over filled, serious injury from fire or explosion could occur.

You Get the "Click"

When you first turn the Ignition switch to On you should receive an audible "Click" if all safeties are satisfied to light the burner.

  1. Check Propane - Make sure the valve is open and you have propane in your tank.
  2. Air in Gas Line - If your machine is new or sat disconnected from the propane tank for several days, air can fill the gas lines. It may take up to a minute to purge the air from the lines. With the propane tank connected and the tank valve open, run the machine for 30 seconds with the Ignition switch On. Cycle the Ignition switch Off then On, waiting another 30 seconds. Make sure you receive a "Click".
  3. Check Spark - Using a mirror, look under the machine at the pilot assembly while you cycle the Ignition switch. You should see a spark.
    Caution: Do not look down the cylinder to check for the pilot!
    If you don't see a spark, shut down the machine and check that the red spark wire running from the pilot assembly to the control module is connected to the high voltage terminal on the control module. If everything checks out then you may have a bad control module. Please call our service department for further assistance.
  4. Check Pilot Orifice - Loosen brass fitting on copper tube running to the pilot assembly. With the brass fitting holding the copper gas line loose but still screwed into the pilot assembly, loosen the pilot orifice. Now remove the pilot gas line and then the pilot orifice. Looking into the open end of the pilot orifice toward a bright light source, you should see two very small holes. If you don't see two holes, clean with compressed air and a cloth. Do not stick something through the holes as this will change the orifice size. You must replace the orifice if you cannot clean them. Also, check in the area where the pilot orifice is inserted in the pilot assembly for debris. Clean as necessary.
  5. Pilot Lights - Again, using a mirror to look under the machine, you see a pilot flame but the main burner still will not light. Listen for a second "Click" after the pilot lights. This is the main gas valve solenoid opening to feed gas to the main burner. If you don't get the second "Click", then check the white wire connected between the flame sensor rod on the pilot assembly and the control module. If the wire is okay then you may have a cracked flame sensor rod which will need to be replaced. Please contact our service department.

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You Don't Get the "Click"

  1. Check High Limit Cut-Off - Make sure the high limit cut-off control knob on temperature gauge is set to a temperature greater then indicated temperature.
  2. Check Relay - Look on electrical panel inside of the machine and make sure the relay is seated in the socket properly.
  3. Check Water Flow - A flow switch internal to the machine senses for adequate water flow. Make sure their are no restrictions that would limit the flow of water. Remove the nozzle and make sure it is not clogged. Leave the nozzle off and try to light the machine.>
  4. Check Wiring Look at all wiring inside the machine to make sure it is not loose, burnt or shorted.
  5. Check Voltage Points - See the Voltage Checks section and verify voltages on the terminal strip.
  6. Check Output Pressure - Reduced output pressure will reduce the amount of water flow which can prohibit ignition. See Low Pressure section.
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Burner Operation

The Unit Lights But You Hear "Clicking"

When the unit is operating with the burner on, you hear a "Click" intermittantly even though the unit continues to operate and the burner stays lit. This can occur if there is a decrease in the amount of water flow through the machine.
  1. Check that there is nothing partially blocking the nozzle.
  2. Check for proper output pressure. A decrease in pressure will decrease the water flow through the machine.
  3. Check for scale build-up in the coils which can reduce water flow through the machine. See the Descaling Procedure section.
Re-light Problem

Unit lights initially but then will not re-light after a pause in cleaning. This is normally caused by a pilot that does not shut off between a pause in cleaning. The control module requires that the pilot go out any time the main burner is shut off by the control module before the main burner is allowed to relight. The pilot solenoid may have stuck or some debris in it is keeping it open. Please call our service department for assistance.

Burner Lights but Goes Out Intermittently

Note: Several safety features built into the unit can interrupt the supply of gas to the burner.
  1. Supply water pressure fluctuates.
  2. The high limit cut off temperature and the gas regulator pressure are set incorrectly. This may cause the burner to cycle on and off repeatedly. It is better and more efficient to adjust the gas pressure with the gas regulator to get the desired temperature. Then set the high limit cut-off temperature slightly higher so the burner operates continuously.
  3. A bad flame sensor rod will sometimes cause this condition.
You See Big Yellow Flame Under Unit

Shut unit down immediately and do not run until problem is resolved.
  1. Check that the main copper gas line to the main burner is good and tight.
  2. Check that the copper pilot gas line is properly tightened to the pilot assembly.
  3. Verify the propane tank is oriented to properly pick up vaporous gas and NOT liquid propane.
  4. Make sure you are using a propane tank made to provide vaporous gas and not liguid propane to the output connection.
  5. Make sure the propane tank is not overfilled.
Unit Does Not Burn Hot Enough
  1. Check for scale build-up in the coils see Descaling Procedure.
  2. Adjust the gas pressure higher. Do not exceed 6 lbs. of pressure.
  3. Propane tank freeze up. Gas pressure will drop on a tank that is frozen. Tank freezing is normal for high usage applications, multiple tanks can be used and rotated in when one freezes up. See LP Gas section for information and precautions when handling LP Gas
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Fuse Blows at Main Panel

You are using an electical circuit that may not be able to handle the load required by the THERMA-KLEEN™ unit. There maybe too many devices plugged into the circuit or the circuit is not big enough to handle the electical load. You should normally use a 15 or 20 amp 120vac circuit. Back to Top

Fuse Blows on Unit

A fuse blowing repeatedly on the unit maybe caused by one of several things. You may have a problem with the motor or pump. If you are using a very long extension cord or a light duty extension cord it could cause problems. It is best to use a 12 gauge cord of 50 foot or less for the Ultra 1000/1300 or a 14 gauge cord of 50 feet or less for the Ultra 250/600 models.Back to Top

Coils Blackened

  1. The burner is operating in a dirty fashion due to an improper gas/air mixture. The burner may need adjustment, cleaning or replacement.
  2. You had a new propane tank filled but the tank was not purged before the first fill of propane. You must take the tank back to the propane fill station and have it purged.
  3. The coils are interfering with or too close to the burner.
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Voltage Checks

The following illustration indicates which terminals on the electric plate have voltage and at what level. The machine must be connected and powered on as if you were operating the unit. Using a volt/ohm meter on the AC scale, probe the terminals as shown in the illustration. At each terminal, either of the two screws can be probed. For 240vac units replace 120vac with 240vac.

Voltage Checks

When measuring the 120/240vac you must put the probes across the two terminals indicated.

Caution: these voltage levels can cause serious personal harm. Use extreme care when doing the measurements.

No voltage can be cause by a blown fuse, bad pump switch or a loose connection.

When measuring the 24vac, you must find a good chassis ground to put one probe on and then use the other probe to make the measurements.
  1. Output of 24vac transformer input to ignition switch.
  2. Output of ignition switch input to combistat.
  3. Output of combistat (temperature gauge) input to flow switch.
  4. Output of flow switch input to control module.
Example: If voltage is on Term. 5 but missing on Term. 6, check the ignition switch which is supplying the voltage to Term. 6. Either the switch is bad or a wire is loose, shorted or missing. Back to Top

Safety Tips

While your THERMA-KLEEN™, portable, high pressure, steam cleaner is designed to be an entirely safe cleaning system, incorporating the latest and the most state-of-the-art safety features. The following safety tips are recommended by the manufacturer for the user to implement:

  1. Please keep all hands, arms, neck and loose clothing away from the top of the cylinder when and while ignition of the burner takes place and while in the actual operating of your high pressure, steam cleaner.
  2. Please use safety goggles, gloves, long pants and sleeves while operating your cleaner.
  3. Do Not grab the steam hose without gloves when unit is being used and the hose is hot.
  4. Check L.P. gas quick connect to make sure it has snapped tight and there are no leaks. Inspect the "O" rings and seals occasionally.
  5. Use the heat deflector when operating the unit under low ceilings, sprinkler systems, heat/alarm systems, plastic light covers and any plastic materials, or any flammable items.
  6. Do Not operate your unit while the unit stands atop carpeted, wood or linoleum type flooring, as the heat from the burner could cause damage to these surfaces.
  7. Do Not steam clean asphalt driveway material or floor grouting while using the blast nozzle. To prevent pitting of such materials, we suggest that you only use the fan nozzle in these instances.
  8. Do Not point or direct the wand and nozzle with high pressure steam at any person as this could result in burning or harming another person.
  9. Do Not point or direct the water spray from wand towards an electrical outlet or items.
  10. Do Not disconnect steam hose from the machine while the water temperature exceeds 100°F.
  11. Do Not spray machine or allow machine to get wet as a shock may occur when touching electrical switches.
  12. Do Not allow extension cord to lay in water while cleaning.
  13. Do Not pull machine back off of the front wheel while machine is operating.
  14. Close propane tank valve after each use. If propane smell is detected when machine is not in use, check for leaks at the valve or any connections. Outside storage of tanks when not in use is recommended.
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Liquid Propane Gas

Your propane fired, high pressure, steam cleaner provides you with a clean burning, odorless, U.S.D.A. allowable system. Ideal for indoor use. We recommend you own two vaporous propane cylinders to provide you with many hours of cleaning time. Each cylinder will supply you with approximately 3-4 hours of total cleaning time. However, due to the nature of propane gas under pressure, you will only be able to utilize each tank of gas continuously for approximately 1.5 hours before your tank freezes up requiring you to switch over to a second cylinder.

Warning: Propane is liquid under pressure and boils into vapor at a very low temperature and release of pressure (valve open). All THERMA-KLEEN™ Propane units are designed to use the vaporous type of tank such as those used on barbeque grills. The top part of the tank where the valve is located must be oriented so that it has an air space for the vapors to exit the tank at the valve. If you have the tank oriented such that the valve will pickup liquid propane or the tank is over filled, serious injury from fire or explosion could occur.


It is very important that you store your cylinder filled with LP gas in an upright position and in a cool location. Do Not leave your filled cylinder in a hot confined and unventilated environment. When you are not using your cylinder it is recommended that you store it outside.

LP Tank Mounting

We suggest that you mount your cylinder on your THERMA-KLEEN™ Inc. steam cleaner so that the regulator and regulator hose are situated on the farthest side of the cylinder, away from the machine. Make sure all connections are tight.

LP Gas Smell

If you detect a strong smell of Propane, check all connections. Do Not light the unit until this is corrected. Use a mixture of approved non-acidic soap and water around all connections to find any leaks. You should not see any bubbles. Repair all leaks before using the unit. Fuel Pressure Settings

Your supply water temperatures to your hose may vary from season to season with colder water increasing fuel pressure settings.

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Limited Warranty

THERMA-KLEEN™, Inc. as manufacturer, warrants to the original purchaser, each new machine for a period of one year from date of shipment from the factory, to be free from defects in material and workmanship under normal use and service. "Normal use and service" means not in excess of recommended maximum pressures, temperatures, incorrect fuels, or handling fluids not compatible with component materials, as noted in THERMA-KLEEN®, Inc. manuals. This warranty shall not apply to any machine or component which has been repaired or altered to adversely affect the performance or reliability of this product. The heating element on the THERMA-KLEEN™ models will not be covered if distilled water is not used or scale is present. The boiler has a lifetime warranty.

Neither this warranty nor any implied warranty apply to damage or harm caused by any or all of the following:
  1. Freight damage
  2. Freezing damage
  3. Damage caused by parts and/or accessories or components not obtained from or approved by THERMA-KLEEN™, Inc.
  4. Any consequential or incidental damages arising from the use of a THERMA-KLEEN™
  5. Damage due to misapplication or misuse. Pump valves and bearings on the Ultra models are not warrantied if they are broken.
The liability of THERMA-KLEEN® under the forgoing warranty is limited to repair or replacement of a defective component or part at THERMA-KLEEN®'s option. The defective component will be returned to the original manufacturer for judgment as to whether the component failed under normal operating conditions and therefore replaced or misused. These parts must be returned to the regional office or manufacturing facility within the warranty period, at the sole expense of the purchaser. This warranty is limited to furnishing the parts for replacement exclusive of installation labor. The liability of THERMA-KLEEN®, Inc. under any theory of recovery (except any express warranty where the remedy is set forth in the above paragraph) for loss, harm or damage, shall be limited to the lesser of the actual loss, harm, damage, or the purchase price of the involved machine.

THERMA-KLEEN®, Inc. expressly warrants its machines as above stated. There are no other express warranties. Any implied warranties, including warranty of merchantability or of fitness for a particular purpose or merchantability when this product is put to an industrial, commercial or rental use. Before using any product, customer shall determine the suitability of the product for its intended purpose and the customer assumes all risk and liability whatsoever in connection therewith.

No person including any dealer or representative of THERMA-KLEEN®, Inc. is authorized to make any representation or warranty concerning THERMA-KLEEN®, Inc. products on behalf of THERMA-KLEEN®, Inc. or to assume for THERMA-KLEEN®, Inc. the obligations contained in this warranty. THERMA-KLEEN®, Inc. reserves the right to make changes in design and other changes and improvements upon its products without imposing any obligations upon itself to install the same, upon its existing products or products then in process or manufacture.

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