TM 10-4610-232-12
Table 3-1. Operator Troubleshooting Guide (Continued).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 6.
Check warning lights.
PRODUCT HIGH PRESSURE light on. Clear alarm light by pressing SYSTEM RESET pushbutton. If light
does not go out, refer to product high pressure troubleshooting.
HIGH PRESSURE PUMP PRESSURE HIGH alarm light on. Clear by pressing SYSTEM RESET pushbut-
ton. If light does not go out, notify unit maintenance.
Step 7.
Notify unit maintenance.
2. Raw water pump won't start with OPERATION MODE switch in FILTER BACKWASH position and FILTER BACKWASH light on.
Step 1.
Check media filter pressure.
If pressure is greater than 5 psig (34 kPa), open drain valve until pressure drops.
Step 2.
Check media filter level gage.
If flags are not white down to about the last 2-3 inches of column, open drain valve until white flags appear.
Step 3.
Check RAW WATER PUMP circuit breaker.
Push on.
Step 4.
Check RAW WATER PUMP STARTER RESET button.
Push in.
Step 5.
Check main control panel set-up.
SYSTEM MODE switch ON.
FILTER BACKWASH light on.
Press SYSTEM RESET pushbutton.
Air supply gage should read 85 to 95 psig (586 to 655 kPa).
Press INITIATE pushbutton.
Press RAW WATER PUMP START pushbutton.
Step 6.
Check RAW WATER GROUND FAULT RESET.
Push up.
WARNING
Make sure the circuit breaker for the raw water pump is turned off. Failure to do so could
result in electrocution.
Step 7.
Check electrical connections to pump.
Tighten if loose. Clean and dry, if dirty or wet.
Step 8.
Notify unit maintenance.
3. Raw water pump won't start with OPERATION MODE switch in FILTER NORMAL position and FILTER NORMAL light off.
Step 1.
Check EMERGENCY STOP pushbutton.
Pull out.
Step 2.
Check all 120 volt circuit breakers.
Push on.
Step 3.
Check RAW WATER PUMP STARTER RESET.
Push in.
Step 4.
Check RAW WATER GROUND FAULT RESET.
Push in.
Step 5.
Check main control panel set-up.
SYSTEM MODE switch ON.
OPERATION MODE switch in FILTER NORMAL position.
FILTER NORMAL light on.
Press SYSTEM RESET pushbutton.
Air supply gage should read 85 to 95 psig (586 to 655 kPa).
3-2 Change 12
