TM 10-4610-232-12
Table 3-1. Operator Troubleshooting Guide (Continued).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
5. Air panel high pressure gage indicates pressure over 1850 psig (12755 kPa) and the air compressor is still running.
Step 1.
Turn COMPRESSOR OFF/ON to OFF.
Step 2.
When pressure reading drops to 1000 psig (6895 kPa) turn COMPRESSOR OFF/ON to ON. Normally control by
turning OFF at 1750 psig (12066 kPa) and ON at 1000 psig (6895 kPa).
Step 3.
Notify unit maintenance.
6. Air panel high pressure gage indicates pressure below 1500 psig (10342 kPa) and the air compressor has not started.
Step 1.
Check COMPRESSOR ON/OFF switch.
Turn on.
Step 2.
Check air compressor 440 VAC circuit breaker.
Turn on.
Step 3.
Check air compressor starter reset.
Push in.
Step 4.
Notify unit maintenance.
HIGH PRESSURE PUMP.
1. High pressure pump won't start with OPERATION MODE switch in FILTER NORMAL or SYSTEM CLEAN position.
Step 1.
Check HIGH PRESSURE PUMP circuit breaker.
Switch on.
Step 2.
Check HIGH PRESSURE PUMP STARTER RESET.
Push in.
Step 3.
Check feed water pressure.
If feed pressure is below 5-7 psig (34-48 kPa) at the cartridge filter pressure gage (red needle), the
pump won't start. Refer to operation procedures and set valves to their proper position.
Step 4.
Notify unit maintenance.
2. High pressure pump motor hums but won't turn with ambient temperature above 32°F (0°C).
Step 1.
Notify unit maintenance.
3. High pressure pump motor hums but won't turn with ambient temperature below 32°F (0°C).
Step 1.
Check for icing of pump.
Step 2.
Check to assure pump electric heater is delivering hot air.
Step 3.
Notify unit maintenance.
4. High pressure pump starts but shuts down on product high pressure.
Step 1.
Check product piping and valves.
Open product shut off valve and remove dust caps from product hose.
Step 2.
Check for ice at the block valve and connection (cold weather operation only).
Step 3.
Notify unit maintenance.
5. High pressure pump starts but shuts down on feed high pressure.
Step 1.
Check pressure control valve.
Open valve.
Step 2.
Notify unit maintenance.
6. High pressure pump starts but shuts down on feed low pressure.
Step 1.
Check feed valves.
Refer to operational procedure and position valves correctly.
Step 2.
Check caution lights.
Service the filters or strainer if a caution light is lit.
Change 12 3-25
