THERMA-KLEEN Ultra Propane 600 User manual

Ultra Propane - Ultra 600
January 15, 2019
1
THERMA-KLEEN®
Operators Manual
Ultra Propane – Model 600
Made in the USA
THERMA-KLEEN®
2415 E. Huron PO Box 805
Au Gres, MI 48703
Ph: 630-718-0212 Fax: [phone]
E-mail: [e-mail]
Web Site: www.therma-kleen.com

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OWNERS MANUAL
Do Not Use This System Without Reading This Manual First
You should be familiar with the information in this manual before you operate your
equipment. The manual is structured so that it can be used for your reference.
Page Description
3 SERVICE INFORMATION
4 MACHINE SPECIFICATIONS
6 SAFETY INFORMATION
9 GROUNDING
9 OPERATING INSTRUCTIONS – START-UP
10 OPERATING INSTRUCTIOND – SHUT DOWN
11 PREVENTIVE MAINTENANCE
12 DESCALING PROCEDRUE
12 MAINTENANCE OF PUMP
13 MAINTENANCE OF MOTOR
14 CHEMICAL INJECTION
14 TROUBLE SHOOTING
19 HOSE MAINTENANCE
20 PARTS
24 L.P. GAS PROPANE
25 WARRANTY
All information, illustrations and specifications contained within this manual are based on
the information available at the time of production.
THERMA-KLEEN®, reserves the right to make changes at any time.

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SERVICE INFORMATION:
Therma-Kleen® Model 600
Please take the time to fill out the form on this page. When completed, this reference
form will provide information essential to the proper servicing and ordering of parts for
your THERMA-KLEEM® ULTRA 600.
OWNER:
Name of Business: ___________________________________________________
Address: ___________________________________________________________
City, ______________________________ State: __________ Zip Code: _______
Telephone: ___________________ E-mail: ______________________________
Serial #: _____________ Date Shipped: ___________________________
Our sales and parts department will be glad to answer any questions or provide
troubleshooting help over the phone. All parts will be shipped via UPS unless otherwise
specified. The warranty card must be filled out on our Web Site to activate your
warranty.
www.THERMA-KLEEN.com
Therma-Kleen®
P.O. Box 805, 2415 E. Huron Rd. Au Gres, MI 48703
Telephone: [phone] Fax: [phone]
E-Mail: [e-mail]

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MACHINE SPECIFICATIONS:
SPECIFICATIONS Ultra 600
WATER PRESSURE:600 PSI
MAXIMUM WATER TEMP: 340˚F
WATERVOLUME: 1.5 GPM
SIZE: 18” W x 23” L x32” H
WEIGHT: 100 lbs.
FUEL: Vaporous LP gas on all models
BTU/hr.: 130,000
FUSE SIZE: 10 amp
STANDARD UNIT INCLUDE:
25 ft. Steam Hose X
50 ft. Steam Hose
Fan Nozzle X
Blast Nozzle X
Trigger Gun X
4 ft Wand Deluxe X
LP Gas Regulator X
Bungie Cord X
Internal Chemical Injection System
Fuel Pressure Gauge X
Temperature Gauge - Hi-Limit X
Electric Pilot Ignition X
Pressure Gauge X

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INSTRUCCIONES PARA OPERAR LA MAQUINA DE LIMIEZA
Conecte una manguera de agua a la rosca que se encuentra en la parte baja de la maquina
en el lado derecho. Conecte la manguera de vapor al desaguadero que se enchufa en el
lado izquierdo (ver instrucciones “quick connect coupling” pagina 14.)
Prenda el agua y deje que corra atraves de la maquina hasta que haya un flujo constante de
agua saliendo del tubo de acero (ver instrucciones “Wand” pagina 15.) Si le quita la
boquilla al tubo se le va hacer mas rapido el proceso. Un flujo constante de agua significa
que no hay aire en el serpentin y no hay restricciones en la boquilla. Cuando obtenga este
flujo constante la bomba va a funcionar major. Recuerde de poner la boquilla otra vez en
la punta del tubo de acero.
Conecte la maquina a una fuente de corriente de 115 voltios haciendo tierra. No prenda la
maquina sin hacer tierra. Prenda el boton de la bomba. Si la bomba se agita, es porque
esta usando una extencion de electricidad muy larga, la cual no puede conducir suficientes
voltios para la maquina. Use una extencion de 50 pies bastante grueza. Solamenta usa
AGUA FRIA; el agua caliente le danara los sellos de la bomba.
Conecte el gas propano a la pieze que gira sobre el eje (swivel fitting). Conecte el
regulador del gas propano al tanque de gas propano con el regulador puesto hacia arriba.
Ue solamente el gas propano que es vaporizado. Abra la valvula de gas completamente
(swivel fitting) que esta localizada sobre el tanque de gas. Para abrir todas las piezas y
valvulas, gire hacia la izquierda y para cerrar, hacia la derecha.
Prenda la maquina. Espere 60 sequndos para que encienda. Si la maquina se apaga,
espere a que se vuelva a encender automaticamente. Si la maquina se nueva, o no ha sido
usada en 12 horas o mas, variosminutos seran necisarios para que arranque. Esto es muy
normal ya que las lineas de gas tienen que sacar todo el aire y llenarse poco a poco.
Prenda y apague el arrancador varias veces.
Si usted quiere apagar el flujo de agua con el control del tubo de acero, mueva la valvula
90 grados para cerrar. No deie la valvula de control predida por mas de 2 minutos. Esto
puede danar y romper su maquina. Para volver abrir el flujo de agua, alinie la bolita de la
valvula paralelamente con el tubode acero. La unidad automaticamente se encendera en
60 segundos despues que se avra la valvula.
Como apagar la maquina:
….Apague el arrancador.
….Deje que la maquina continue corriendo hasta que toda el aqua caliente ha sido forzada
fuera del serpentin, y la valvula de la temperature margue 140 grados F.
….Apague la bomba, cierra la valvula del gas en el tanque de gas.
….Apague el agua y desconectela de la fuente de corriente.

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SAFETY TIPS:
While your THERMA-KLEEN®, portable, high pressure, steam cleaner is designed to be an
entirely safe cleaning tool, 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. ALWAYS - Check the machine, power & steam hose for damage
prior to start-up. If damage is detected, it must be repaired
prior to use.
2. ALWAYS - Check LP gas quick connect to make sure it has
snapped tight and there are no leaks.
3. DO NOT - Light the unit is there is any smell or indication of a Gas Leak.
4. ALWAYS - Use the heat deflector when operating the unit under low ceilings,
sprinkler systems, Heat/alarm systems, plastic light covers and any plastic
material, or flammable items.
5. DANGER – NEVER - Place hands, arms, neck, and loose clothing
Etc. over the top of the cylinder when and while ignition of the
burner takes place and during the actual operation of your high-
pressure steam cleaner. Beware of the flame in windy
conditions.
6. ALWAYS - use appropriate safety googles and gloves while operating your
cleaner.
7. ALWAYS - wear long sleeves, long pants, while operating your
cleaner.
8. DO NOT touch or grab the steam hose without gloves when
hose is being used or hot.
9. CAUTION - Before use check the electrical cord for damage, ware &
tare, cuts or abrasion.
a. DO NOT - use your machine with a damaged electrical cord.
10. ALWAYS - use the electrical plug that is on an approved
grounded circuit for this model.
a. CAUTION - If unsure if the circuit is properly grounded or has
the correct voltage\amperage for this machine, contact a
certified electrician.

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b. CAUTION - If the Power Outlet is damaged, have a certified
electrician repair the outlet.
c. NEVER - Touch the electrical plug or unplug the unit with
wet hands or while standing in a wet environment.
d. NEVER - Allow the electrical power cord to lie in water
while cleaning.
e. NEVER - Unplug from the receptacle by pulling on the cord,
always grasp the plug itself Make sure the unit is unplugged.
11. NEVER - Touch the system with wet hands or while standing in a
wet environment.
12. NEVER - Allow the machine to get wet as electrical shock may
occur.
13. CAUTION - Use extra caution when using the system around
water (Swimming Pools, Spas, Toilets, Etc.)
14. DO NOT - Allow the electrical power cord or Steam Hose to be run over,
stepped on or have something placed or dropped on it.
15. DO NOT - Allow the Electrical Power Cord or Steam Hose to be caught in a
closed door or pull over a sharp corner.
16. CAUTION - Turn off all controls prior to unplugging the unit.
17. ALWAYS -
18. CAUTION - Make sure all attachments are secured before activating the gun.
a. CAUTION - Only operate the unit when it is in a Horizontal position.
19. WARNING - To prevent scalding or burning, ALWAYS keep your hands and body
away from the nozzle tip during operation and wear
appropriate protective clothing.
a. DO NOT - Touch the steam nozzle while in use, or until
after it cools.
b. DO NOT - Grab the hot steam hose without appropriate
gloves.
20. NEVER - Point or direct the wand or steam at any person, animal or electrical
outlet or anything which could be damaged.
21. DO NOT - Move or lift the machine by pulling on the electrical cord.
22. DO NOT - Move or lift the machine by pulling on the steam hose
or gun.
23. DO NOT - Bend the steam hose past the 2” bend radius. This
will shorten the life of your hose.

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24. DO NOT - Operate your unit while the unit stands atop carpeted
floors, wood flooring or linoleum type tiled floor, as the heat
from the burner could damage these items.
25. DO NOT - Point or direct the wand and nozzle with high
pressure steam at any person/animal as this could result in
burning or harming another person/animal.
26. DO NOT - Point of direct the water spray from the wand towards an electrical
outlet or box.
27. DO NOT - Operate the machine without water as this may cause damage to the
unit.
28. DO NOT - Disconnect steam hose from the machine while the water
temperature exceeds 100˚F.
29. CAUTION - Only operate the machine while it is in an upright position.
30. DO NOT - Use in small confined areas.
31. 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.
32. DO NOT - leave the machine unsupervised while cleaning away from the
machine.
33. NEVER - Pull or tug on the machine with the power cord or steam hose.
34. CAUTION - Make sure all attachments are securely attached before activating
the gun.
35. NEVER - Allow children or un-trained persons to use or handle or operate the
machine.
36. CAUTION - Only operate the unit in an upright position.
37. Only - Use approved THERMA-KLEEN® components and parts in these units.
38. ALWAYS - Empty machine of all water when finished.
39. NEVER - Store machine outside.
40. NEVER - Store machine with water in it.
41. NEVER - Allow the unit to be exposed to freezing temperatures as
severe damage will occur.
WARNING:
Your Therma-Kleen Vapor Steam Cleaner MUST BE PLUGGED INTO A GROUNDED
OUTLET, or electrical shock can occur. Check with a certified
electrician if there is any doubt that the outlet is grounded. Do not
modify the Power Cord/Plug provided with the Therma-Kleen Vapor

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System. If it will not fit the outlet, have a properly grounded outlet installed by a
certified electrician.
WHY THIS UNIT MUST BE GROUNDED:
If the unit should malfunction or break down, grounding provides a path of least
resistance for the electrical current to pass, reducing the risk of electrical shock.
All Therma-Kleen units are equipped with a power cord with an equipment
grounding conductor and plug. The plug must be inserted into an appropriate
outlet which is properly grounded in accordance with national & local electrical
codes and ordinances.
Therma-Kleen® units are designed for use with a normal
110/120 volt circuit and has a grounded cord and plug such as
what is illustrated in picture “A”. In no cases should a “2”
adaptor (which is illustrated in picture “B”) plug be used to
adapt “3” prong grounded plug to an ungrounded electrical
outlet.
NOTE:
If an electrical extension cord is used with this system, it must be at a minimum,
12-gauge, 3 wire, grounded, SJ Quality, 60 Degree C, less than 50 ft. long.
DO NOT remove the ground prong on the power cord. This will void the warranty
on your machine and can be dangerous because it does not protect the user.
OPERATING INSTRUCTIONS START-UP:
1.) Connect the machine to 115 volt, GROUNDED electrical service. A 12 gauge/3
prong extension cord is required for the Ultra 1000 or the Ultra 1300 model.
Using an improper extension cord could cause damage to the machine and cause
erratic operation. For 220 volt machines, use a 220 volt grounded outlet.
2.) Connect a garden hose from a cold water source to the inlet fitting on the lower
right hand side of the steam cleaner.
3.) Connect a steam hose to the water outlet quick connect or European threaded
fitting on the left hand side. If a quick connect system was used on your machine,
make sure it “snapped” tight.
4.) Connect the wand to the steam hose end using the same method as step #3.
DO NOT USE
B
A

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5.) Connect the LP gas regulator to the LP tank keeping the regulator upright. The
threads in the tank fitting are reversed. DO NOT OVERTIGHTEN the fitting. Make
sure the LP tank is in the proper upright position to supply ONLY VAPOROUS LP
gas to the machine. Keep the regulator positioned away from the machine.
NOTE: Natural gas option; this model needs to be vented.
6.) Connect the LP gas hose to the connection on the control panel. Make sure it is
completely connected before continuing.
7.) Open the main fuel valve completely located on top of the LP gas tank. If any
leaks are suspected, check for bubbles by covering the connection with soapy
water.
8.) Keep the gas pressure low on the fuel pressure gauge at this time. If the pressure
is too high, adjust the red regulator counter-clockwise (upward) to reduce the
pressure. You should start the machine with about 2-3 lbs. of fuel on the larger
models and 1-2 lbs. on the Ultra 250 and Ultra 600.
9.) Keep the gas pressure low on the fuel pressure gauge at this time. If the pressure
is too high, adjust the red regulator counter-clockwise (upward) to reduce the
pressure. You should start the machine with about 2-3 lbs. of fuel on the larger
models and 1-2 lbs. on the Ultra 250 and Ultra 600.
10.) Turn the cold water supply source on completely.
11.) Squeeze the trigger on the wand allowing the water to come through the gun.
12.) Turn the PUMP switch “ON” and let the machine run until the pump runs
smoothly and the water isn’t sputtering. To speed the process up you can close
the trigger gun for about 10 seconds and open again. This will help bring the air
to the front of the wand.
SHUT DOWN:
1.) Turn off the ignition switch.
2.) Let the pump continue to run until the water cools down and the temperature
gauge reads
3.) About 100° F
4.) Turn off the pump, close the LP gas valve on the tank.
5.) Turn off the water and disconnect the electricity.
6.) Store the unit where it will not be subject to freezing temperatures as this will
destroy the pump, coils and/or the flow switch.
a.) If this cannot be done:

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WINTERIZE THE UNIT:
1.) The Ultra 250 and Ultra 600 require: 1 gallon of windshield wiper fluid or anti-
freeze.
2.) The Ultra 1000 and Ultra 1300 require: 2 gallons of windshield wiper fluid or
anti-freeze.
3.) Windshield wiper fluid is good to about -20˚F and the anti-freeze goes even
further.
4.) See Preventative Maintenance Section
CONTROL PANEL DIAGRAM
1.) Nozzle Holder
2.) Fuel Pressure Gauge
3.) Combistat. This is a
temperature gauge and an
adjustable high limit switch
all in one.
4.) Ignition Switch
5.) Fuse Holder
6.) Pump Switch
7.) Soap Injector (on Ultra 1300
only)
Location may vary per machine.
PREVENTIVE MAINTENANCE:
1.) Periodically inspect and clean water inlet screen located at the inlet of the unit (at
the hose attachment on the Ultra 600/1300 models-Ultra 250 filter is part of the
pump).
2.) Periodically inspect nozzle to make sure it is clean. Restricted water flow, shut
down or interrupted spray pattern is an indication of obstruction in the nozzle.
3.) DESCALING: hardness or mineral content in water along with steam temperatures
will eventually create a coating or build-up of scale in the heating coils. Excessive
scale will shorten coil life and interfere with temperature controls. Scale appears
periodically. Check for scale build-up on inside of steam connections. When scale
has built-up to such a degree that the machine senses accurate low water flow
internally, the unit will not light, or will light and shut-off. A test for scale build-up

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is to remove the nozzle and see if the machine lights, and if it does, then you may
need to descale the unit. Other low water issues maybe the cause, such as a bad
pump, etc. See DESCALING Section.
4.) DO NOT FREEZE the machine. This can ruin the coils, pumps and flow switch.
Winterize the machine when necessary. This can be done by running anti-freeze or
windshield wiper fluid through the garden hose, as you do when you descale a
machine. See DESCALING Section. The Ultra 250, 600 and 1300 models require 1
to 2 gallons of fluid to completely fill the coils and water system. When you are
ready to resume using the machine, flush thoroughly and dispose of the anti-freeze
carefully before heating the system.
DESCALING PROCEDURE:
1.) Obtain THERMA-KLEEN® descaling compound from your salesman or use
equivalent product. Only use THERMA-KLEEN® recommended product safe for
aluminum coils.
2.) Place in a bucket in concentrated form, or mix according to manufacturer’s
instructions. (½ gallon of descalant is needed).
3.) Remove nozzle from the wand.
4.) Turn water supply and pump “ON” as if you were going to start the machine. After
the pump is primed, quickly turn “OFF” the pump and water supply and disconnect
the hose from the water connection and place the garden hose into the bucket
along with the wand end.
5.) Quickly turn “ON” the pump and let the solution circulate through the machine for
about five (5) minutes. Flush the unit with clear water before starting the machine.
6.) If you are winterizing the unit, 1 gallon is needed for the Ultra 250 & 600 and 2
gallons of liquid is needed for the Ultra 1300. Watch for the solution to exit the
wand. Quickly shut- off the pump.
MAINTENANCE OF PUMPS:
ULTRA 600:
The pumps used on these models are factory sealed. When replacing a pump or motor it
is necessary to re-lubricate the plunger and bearings. Use synthetic grease with PTFE.
We recommend this brand: Super Lube. Check for sufficient lubrication as a
maintenance procedure to extend the life of your pump and motor. Repair a pump as
needed to prevent damage to the motor and/or bearing. Check the pump pressure on a
regular basis.

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All pumps:
The warranty will be void if you do the following:
1.) If you don’t flush the unit with fresh water after each day’s use.
2.) If you attempt to mix dry powder chemical in solution feed.
3.) If you fail to properly install kit components, or modify kit.
4.) If you use chemicals greater than 9 PH OR LESS THAN 6 PH.
5.) If you re-wire the motor incorrect and the motor runs backwards.
6.) If you use water that is hotter than 140˚F.
7.) Run the pump dry, causing cavitation.
MAINTENANCE OF MOTORS:
ULTRA 600:
The bearings are pre-lubricated. Periodic maintenance to assure enough
lubrication is recommended.
The motor is equipped with and AUTOMATIC thermal protector to guard against
overheating and will trip if it gets too hot.
Push the red button on the side of the cooled motor to reset the motor on the
Ultra 1300 only
FULL LOAD AMPS:
Ultra 250: 3.4 on 220 volts/ 6.8 on 115 volts
Ultra 600: 3.4 on 220 volts/ 6.8 on 115 volts
Ultra 1000: 7.5 on 220 volts/ 15.0 on 115 volts
Ultra 1300: 7.5 on 220 volts/ 15.0 on 115 volts
INTERNAL CHEMICAL INJECTION SYSTEM (Ultra 1300):
1.) Open knob on control panel all the way counter- clockwise.
2.) Drop chemical feed line into chemical.
3.) DO NOT USE HARSH CHEMICALS THROUGH THIS SYSTEM, IT CAN DAMAGE
YOUR PUMP AND ALUMINUM COILS. If you need a harsh chemical, apply it on the
item you wish to clean before you start cleaning…wait…and steam clean the item
after 10 - 15 minutes, or use the optional external chemical injection system.
4.) To end using the chemical injection, turn the knob on the machine all the way
closed. The soap will now stop drawing. Please make sure this knob is closed
when you are not using this system so the pump does not draw unnecessary air.
5.) Blocked internal chemical injection can affect the water flow to the pump and
cause damage.

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MAXIMUM WATER INJECTED PER MINUTE:
Ultra 1000: at 1000 PSI at 20 PSI pump inlet conditions… you yield 8 ounces per minute.
MAINTENANCE:
If the opening around the needle valve stem becomes clogged, clean valve stem and
passage way with warm soapy water. Rotate the control knob assembly counter
clockwise (which includes the control knob and needle valve stem) until it can be lifted
out of the body. Inspect valve stem O-ring and replace if necessary. Install control knob
assembly by pushing down firmly on knob and turning clockwise until it is in the closed
position. Set injector to desired setting.
SOAP SYSTEM NOT DRAWING:
1.) Make sure all of the soap lines are connected to barbs inside the machine.
2.) Make sure soap injection is now open on top of machine.
3.) Air may have been drawn into line and caused an air lock. Fill soap line with water
forcing air through system.
4.) Water regulator is set at factory, but may be adjusted to create suction though the
soap line. Adjust by setting T-bar in or out slightly.
TROUBLE SHOOTING GUIDE:
WHEN YOU GET THE “CLICK” BUT THE UNIT DOES NOT IGNITE:
1.) Make sure water is flowing through nozzle end of wand. The unit will not light if
the
gun valve is in the closed position. Unit will light faster if nozzle is removed before
lighting, this speeds up any air locks.
2.) Check to verify that propane tank is not empty and that the propane tank valve is
open.
3.) Check water supply to ensure adequate flow to unit. Your unit requires at least 20-
30 lbs. of water line pressure, or the machine will not operate, a safety feature of
your unit.
4.) Check to make sure nozzle is totally clear of obstructions.
5.) Check to see that your gas reading is NOT MORE than three or four pounds of
pressure.
Too much pressure will also prohibit lighting.
6.) Check for spark at pilot burner:
b.) Is spark electrode hooked up? (This is the red nipple attached to the control
module.)

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c.) Is the burner grounded on the coil? If it is then re-position coil away from
the burner.
d.) Is the spark ceramic cracked or chipped or cable damaged? If so, replace the
pilot assembly.
e.) Check gap to see if it is 0.1”. The spark gas is part of the pilot assembly
housing.
f.) If there is still no spark, replace the control module.
7.) Make sure your burner system in unit is not wet.
8.) Check to see if pilot is lit.
CAUTION: NEVER LOOK DOWN THE CYLINDER TO CHECK FOR THE PILOT
a. To check this, put a mirror under the body of the machine to view the burner
area. If there is a pilot, go to step 10.
b. Check for a clogged pilot orifice.
a. Remove the thin coupler line and unscrew the pilot
orifice from the pilot assembly. Two very little holes
should be clear upon inspection up to a good light source. If not, then
replace.
9a.) Check for supply of gas, if there isn’t any then get propane tank filled or check for
obstructions in gas lines or regulator. Fuel pressure gauge should never be run
higher than 6 lbs. of fuel pressure, the burner can become flooded and not allow
ignition.
9b.) Check to see if pilot solenoid is opening by connecting the wires to an alternate 24
volt
source. (For example, lines three through six on the terminal strip. Touch one wire
to this source and the other wire to a ground.) You should hear the “click” or the
pilot solenoid opening. If you don’t, then replace the solenoid.
10.) If there is a pilot:
a.) Check to see if the flame sensor is red hot, if not, clean or replace the pilot
orifice.
b.) Check if the flame sensor wire is not damaged and hooked up properly. Replace
or go on to “c”.
c.) Check for cracked flame sensor. Removing the flame sensor will give you an
accurate view of any chips or cracks to the flame sensor. If you find these, then
replace the sensor. Tighten just slightly past hand tight.

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WHEN YOU DO NOT GET THE “CLICK”
PROCESS TO CHECK IGNITION SYSTEM BY A TESTER OR METER:
1.) Turn the pump and ignition switch to the “ON” position with the unit plugged in.
The gas tank should NOT be hooked up to the machine at this time.
2.) Make sure the wand control is open and water is flowing through the machine.
3.) Check for 24 volts at the transformer. (Left side of the transformer as you face it.)
If there is no voltage reading, change the transformer.
4.) To check for 24 volts on the terminal strip, start on line 4. Touch one wire of the
volt meter to the wire on the terminal strip at position four and the other wire on a
ground or neutral wire. If you get a reading then go on to line five and continue
until the power is interrupted. Every switch has 2 wires, one accepting the power,
and the other feeding back from the switch after it has been energized. Once the
faulty switch is determined, then replace.
TEMPERATURE RISES TOO QUICKLY
1.) The air has not been purged from the system. Shut down and allow air to escape.
To speed up this process, take the nozzle off and turn the pump “ON” and “OFF” a
few times. Once there is a steady stream of water and there is no sputtering, then
the pump should run smoothly also. Replace nozzle, turn on pump and machine
should be ready to light. IF YOU LIGHT THE MACHINE AND HEAT AN AIR POCKET,
YOU COULD BLOW A COIL. CAUTION IS ADVISED.
FUSES KEEP BLOWING
1.) If your circuit trips then move to a different outlet. You may be overloading that
circuit.
2.) If the fuse on the machine is blowing again and again, you most likely have a
problem with either your pump or motor, or you may be using too long of an
extension cord. Try not to exceed 50 ft. of heavy-duty extension cord. Or you may
be using the wrong size fuse. Check the machine specification table for correct
fuse size.
PILOT BURNER DOESN’T SHUT OFF
1. The pilot solenoid may have debris in the valve not allowing it to close all the way.
To repair: Remove any debris that may be lodged in the brass section of the valve.
EXCESS CARBON FORMS ON COILS
1.) Check position of coils to insure clear area around top of burner.

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2.) Mushroom section on the top of the burner may be loose and therefore shifted.
Replace burner if this piece can be moved by hand.
3.) Inspect burner for debris in opening. If nothing is found, replace burner.
GAS FLAME GOES OUT OR IS IRREGULAR
NOTE: Various safety features will turn gas off automatically.
1.) If there is inadequate or fluctuating water pressure supply to the machine.
2.) If the unit overheats or rises on temperature to the red line on the temperature
gauge.
3.) If internal gas pressure is too high.
4.) If you have a weak pilot or a cracked flame sensor rod.
WAIT 30 seconds for automatic re-ignition. If re-ignition does not occur, or if
machine shuts repeatedly, check the following:
a.) Reduce LP gas pressure to reduce temperature by turning knob on the gas
regulator counter-clockwise.
b.) Check nozzle for restrictions and clean.
c.) Check water supply for adequate flow, check for leaks at fitting and incoming
water pressure.
d.) Remove pilot orifice and clean dirt out.
e.) Inspect and/or replace flame sensor rod, if cracked.
f.) Make sure the propane tank was not overfilled.
UNIT DOES NOT BURN HOT ENOUGH
1.) Check for max. setting on the temperature gauge. The knob may be adjusted
downward. Keep red line @ 340˚.
2.) Adjust LP gas regulator upward to a higher temperature by turning knob clockwise.
3.) Check fuel supply. The fuel pressure may be dropping due to the tank freezing.
Change to a second tank.
4.) Check and make sure mushroom top on burner is secure and will not turn freely. If
it does, replace.
5.) Burner may be blacked partially and not allowing enough gas supply to burn
evenly. Check flame color around mushroom. Inspect the flame with a mirror
under the machine to view burner area. If only a partial flame is visible, then
replace the burner.

Ultra Propane - Ultra 600
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18
ULTRA 600:
For electrical trouble shooting information, please refer to the web pages that assist with
this information. Go to www. THERMA-KLEEN.com and go to the manuals. “Click on” the
section that shows the terminal strip in the troubleshooting section of the propane
manual. Follow the directions to help determine which component that maybe breaking
the current.
HOSE MAINTENANCE:
ULTRA 600 PUMP EXPLODED VIEW:
Rebuilt Kits are available.
Kit A: Plunger with “O” rings, washers and lubricant
Kit B: Valve kit with “O” rings and washers
Kit C: Bearing (use with lubricant)
Lubricant: Synthetic grease with PTFE Brand: Super Lube.
Failure to maintain pumps can cause damage to bearings and motors.
ULTRA 600 PUMP:

Ultra Propane - Ultra 600
January 15, 2019
19
BURNER WITH PILOT ASSEMBLY:
PARTS:
Coil Compression fittings
45˚Fitting Cap and Ferrule Complete Compression Spacer Bearing
Ultra 1300 for Ultra 1300 Compression Fittings for Coil #3632 #6012
#3973 #3768/3767 Fitting 1300 33971 Ultra 250/600 #3174

Ultra Propane - Ultra 600
January 15, 2019
20
Elbow Compression Ultra 1300 Compression Ultra 250 Pump Ultra 600 Pump Ultra 1300 Pump
Fitting for Ultra 1300 Fitting Breakdown #3738 #6021 #3903
#3972
25-50-100 ft. European European Swivel Fittings Main Regulator with 2.5 ft. Wand Snub Nose
Steam Hose Hose Plug Female Male LP Gas Hose Fittings #3905 Wand #3668
#3805/3673/3160 #3675 #3674 #3671 Quick Connect #3527 (Optional Accessories)
Flame Pilot Assembly Pilot Orifice Solenoid Trigger Gun 4 ft. Wand
Sensor w/Spark Wire #3384 #3723 #3359 #3661
Rod #3383
#3345
Control Module Fuel Pressure Gauge Transformer Combistat
#3241-A #3348 #3359 #3240
Front Wheel for Wheel Socket 10 inch Wheel Front Wheel for
Ultra 600 #3880 250/600 #3870 #3871 Ultra 1300 #3878
Ultra 250/600 Coils Vertical Coil Blast Nozzle Fan Nozzle
Ultra 250/ 600