TROUBLESHOOTING
PROBLEM | POSSIBLE CAUSE | SOLUTION |
LOW OPERATING | Water supply is insufficient | Use larger supply hose; clean filter at water |
PRESSURE |
| inlet. |
|
|
|
| Spray nozzle is old, worn or incorrect | Match the nozzle number to the machine |
|
| and/or replace with new nozzle. |
|
|
|
| Belt slips | Tighten or replace belt; use correct belt. |
|
|
|
| Plumbing or hose is leaking | Check plumbing system for leaks. Retape |
|
| leaks with teflon tape. |
|
|
|
| Unloader is faulty or misadjusted | Adjust unloader for proper pressure. Install |
|
| repair kit when necessary or replace. |
|
|
|
| Packing in pump is worn | Install new packing kit. |
|
|
|
| Discharge valve in pump or inlet is fouled | Check inlet and discharge valve. |
| or dirty |
|
|
|
|
| Discharge valve or inlet is worn | Replace with valve kit. |
| Spray nozzle has obstruction | Remove obstruction. |
|
|
|
| Steam pressure control valve is leaking | Rebuild or replace as necessary. |
| (where applicable) |
|
| Engine RPM is slow | Set engine speed at proper specifications / |
|
| see serial plate. |
|
|
|
BURNER WILL | There is little or no fuel | Fill tank with fuel. |
NOT LIGHT |
|
|
Improper fuel or water in fuel | Drain fuel tank and fill with proper fuel. | |
|
|
|
| Fuel line is clogged | Clean or replace fuel line. |
|
|
|
| Fuel filter is plugged | Replace fuel filter as needed. |
| Burner air bands are misadjusted | Readjust air bands for clean burn. |
|
|
|
| Little or no fuel pressure from fuel pump | Increase fuel pressure to specification and/ |
|
| or replace fuel pump. |
| Burner transformer is faulty | Test transformer for proper arc between |
|
| contacts. Replace as needed. |
|
|
|
| Electrical wiring is disconnected or has | All wire contacts should be clean and tight |
| short in it | with no breaks in wire. |
|
|
|
| Flex coupling is slipping on fuel pump | Replace if needed. |
| shaft or burner motor shaft |
|
|
|
|
| Check for electrical current reaching burner | |
|
| assembly with burner switch on. Replace |
|
| switce if needed. |
|
|
|
| Heavy sooting on coil and burner can | Clean as required. |
| cause interruption of air flow and shorting |
|
| of electrodes |
|
|
|
|
| Electrode setting is improper | Check and reset according to diagram in |
|
| manual. |
|
|
|
| 25 amp circuit breaker tripped | Push in reset button. |
|
|
|
| Bridge rectifier defective | Test and replace. |
| 12V DC relay defective | Test and replace. |
|
|
|
| Fuel is not reaching combustion chamber | Check fuel pump for proper flow. Check so- |
|
| lenoid flow switch on machines with spray |
|
| gun control for proper |
|
|
|
PRESSURE WASHER Troubleshooting Guide
15
