When the light is on, it means there is power to the pilot control. If there is no light, see troubleshooting guide. Motor Overload When the light is on, it means the overload is tripped. Reset overload. Not all machines have all symbols 9.801-509.0 - C • Karcher Operator's Manual...
Applying Detergent & General Washing Techniques Shutting Down & Cleanup Storage Troubleshooting 21-24 Maintenance & Service Heating Coils Propane Gas Burner Features 26-27 Basic Facts and Equivalents Equivalents and Oil Change Preventive Maintenance 9.801-509.0 - C • Karcher Operator's Manual...
4. Use only your hand to push in or turn the gas control knob. Never use a tool. If the knob will not push in or turn by hand, don't try to repair it; call a qualifi ed service technician. 9.801-509.0 - C • Karcher Operator's Manual...
Use caution when op- be unburned gas present. erating. Do not direct discharge stream at people, or severe RISK OF INJECTION OR SEVERE INJURY injury or death will result. TO PERSONS. KEEP CLEAR OF NOZZLE. 9.801-509.0 - C • Karcher Operator's Manual...
Page 6
4 7 0 ° F (243°C) are not suitable for connection to Type B gas vents. Example of Down Draft Diverter for Gas Fired Machines Follow the maintenance instructions specifi ed in the manual. 9.801-509.0 - C • Karcher Operator's Manual...
fl oor. This sys tem pre vents internal High Pressure Hose — Connect one end to water pump dam age. pump high pressure discharge nipple and the other end to spray gun. 9.801-509.0 - C • Karcher Operator's Manual...
All gas piping shall be approved and installed in accordance with the Maximum capacity of pipe in cubic feet/hr of natural gas Uniform Mechanical Code. (Multiply values by 1000 to get nominal BTU/hr capacity. 9.801-509.0 - C • Karcher Operator's Manual...
Page 11
Stop fi lling when liquid appears at the fi xed level gauge. Vents penetrating ceilings or walls should be double- Bleed off excess propane in a safe area. Most LP-gas wall approved appliance vents and should be one to 9.801-509.0 - C • Karcher Operator's Manual...
Attach the wand into the spray gun using tefl on tape pressure washer coil. A draft diverter helps improve on the pipe threads to avoid leaks. draft into the stack without pulling more air through the 9.801-509.0 - C • Karcher Operator's Manual...
Page 13
Excess Air is between 20-30% and/or % Oxygen is below shows data included in the operator’s manual 4-5%. for fl ue and stack sizes and gas manifold pressure settings. These sizes are critical for achieving proper combustion and acceptable emissions. 9.801-509.0 - C • Karcher Operator's Manual...
Page 14
In Canada, gas conversion shall be carried out in accordance with requirements of the Provincial Authorities having jurisdiction and in accordance with the requirements of the CAN/ GGA-B149.1 and .2 installation code. 9.801-509.0 - C • Karcher Operator's Manual...
Page 15
13. Leak test with a soap solution after installation or ser vice with the main burner on. Coat pipe and tub ing joints, gaskets, etc. 9.801-509.0 - C • Karcher Operator's Manual...
Page 16
Have gas lines been checked with local codes? Have all operators using this machine been instructed properly and have they read the manual? Has the machine been installed according to operator's manual instructions? 9.801-509.0 - C • Karcher Operator's Manual...
CAUTION: Do not run the pump machine allowing water to run from picture. without wa ter or pump damage the end of the wand until clear. Turn will result. off machine. 9.801-509.0 - C • Karcher Operator's Manual...
Tu r n t h e wa t e r o f f. P r o t e c t from freezing. High Pressure Nozzle Trigger 98016360-17 NOTE: High pressure nozzle must be attached at end of wand to obtain high pressure. To apply soap, see page 19. 9.801-509.0 - C • Karcher Operator's Manual...
These chemicals will harm the machine and will the pump. dam age the surface being cleaned. RINSING Turn detergent valve clockwise to close. Operate pres sure washer and allow a few sec onds for the de ter gent to clear. 9.801-509.0 - C • Karcher Operator's Manual...
Turn pump off immediately. 4. Do not allow high pres sure hose to become kinked. 5. Store the machine and accessories in a room which does not reach freezing tem per a tures. 9.801-509.0 - C • Karcher Operator's Manual...
Check water supply and connections on NOISY suction line. Broken or weak inlet or discharge valve Check and replace if necessary. springs Excessive matter in valves Check and clean if necessary. Worn bearings Check and replace if necessary. 9.801-509.0 - C • Karcher Operator's Manual...
Page 22
Specify BTU, building gas pressure 11 w.c.i. to machine for correct sizing of regulator. Low gas pressure Increase gas pressure Soot buildup on coils not allowing heat Clean coils. transfer Improper burner nozzle See serial plate. 9.801-509.0 - C • Karcher Operator's Manual...
Page 23
4. If you do not have continuity through wire and the ignitor/sensor, check for a loose wire connection in the wire. Repair as needed. 5. Check to see if spark shorts to burner ring through a cut in the ignitor wire. 9.801-509.0 - C • Karcher Operator's Manual...
Page 24
If you read 24V accross the switch terminals the limit switch is open. Replace the limit switch. A pilot fl ame set too high will also cause burner to short cycle. Pilot fl ame lifts over ignitor/sensor. 9.801-509.0 - C • Karcher Operator's Manual...
High Limit Hot Wa ter Thermostat: fresh water. Reinstall wand assembly to spray gun. For safety, each machine is equipped with a high limit con trol switch. In the event the temperature of the wa ter 9.801-509.0 - C • Karcher Operator's Manual...
Hence, adequate fl oor valve. Disconnect union in main burner line below space and good ventilation are especially important thermostat. Slide burner manifold out through shell with propane systems. opening. 9.801-509.0 - C • Karcher Operator's Manual...
Page 27
2. Remove regulator adjustment screw cap (see Figure 5, page 23). 3. With small screwdriver, rotate adjustment screw clockwise to increase, or counterclockwise to decrease pressure. 4. Replace regulator adjustment screw cap. 9.801-509.0 - C • Karcher Operator's Manual...
Cost of Gas per Therm = Cost to Run Example Using Natural Gas at 50¢ 400,000 BTU Machine Therm: 400 Cu. Ft. (400,000 / 1,000) 4 x 50¢ = $2.00 / Hour to Run ((400 / 100) x cost of gas) 9.801-509.0 - C • Karcher Operator's Manual...
27.71" Water Column 1 lb./sq. in. 14.73 lbs./sq.in 1" Mercury .39 lb./sq. in 1 Std. Atmosphere 14.73 lbs./sq. in. OIL CHANGE RECORD Date Oil Changed Month/ Estimated Operating Hours Day/Year Since Last Oil Change 9.801-509.0 - C • Karcher Operator's Manual...
Clean Water and Chemical Screen/Filter Weekly Clean Float/Supply Tank Every 6 months Replace HP Hose If there is any sign of wear Grease Motor Every 10,000 hours Check Burner Pilot Jets Annually Pressure Relief Valve Annually 9.801-509.0 - C • Karcher Operator's Manual...