TM 10-4610-232-12
Table 3-1. Operator Troubleshooting Guide (Continued).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. Alarm warning/bell does not come on when ALARM TEST is pushed.
Step 1.
Notify unit maintenance.
4. ALARM light does not go out when SYSTEM RESET is pushed.
Step 1.
Check conditions for the light.
Refer to individual alarm switch and corresponding light to isolate problems.
Step 2.
Notify unit maintenance.
5. Alarm does not sound on alarm conditions, but alarm light is on.
Step 1.
Check for other alarm lights.
ALARM SILENCE may have been pushed and is causing the alarm not to sound.
Step 2.
Check SYSTEM RESET.
Step 3.
Check ALARM TEST.
Step 4.
Notify unit maintenance.
6. ROWPU starts normally until high pressure pump is started and then all pumps shut down.
Step 1.
Check generator voltage and cycles.
Adjust generator to 440V on all phases.
Adjust RPM until 60 cycles are obtained.
Step 2.
Check alarm lights.
Red alarm lights cause the ROWPU to shut down. Refer to individual alarm troubleshooting.
Step 3.
Notify unit maintenance.
AUTOMATIC VALVES.
1. Valve light fails to show proper position, on control panel, after an operational procedure has been selected (FILTER
NORMAL, FILTER BACKWASH, SYSTEM CLEAN, para. 2-34).
Step 1.
Check ALARM RESET.
Push in.
Step 2.
Check INITIATE switch.
Push in.
Step 3.
Check LIGHT TEST.
Push in. All lights must light up.
Replace unlit lights.
Step 4.
Check air block valve.
Open vale.
Step 5.
If a light has failed, physically check the valve position.
Remove orange actuator cap.
The central stem is in when the valve is open. Compare the actual position of the valve to the valve
charts (para. 2-34) to see if valve is in wrong position and go to Step 6.
Step 6.
Manually operate failed automatic valve (para. 2-34) if valve is in wrong position.
Step 7.
Notify unit maintenance.
AIR SUPPLY SYSTEM.
NOTE
If, at any time, the air system will not supply enough pressure to operate the
ROWPU, switch to manual valve operation. Refer to para. 2-34 and notify unit
maintenance.
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