TM 10-4610-232-12
Table 3-1, Operator Troubleshooting Guide (Continued).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 2.
Check hose connections.
Clean if dirty.
Replace missing gaskets.
12.
Distribution pump heater does not work.
NOTE
Heater only works when pump is off.
Step 1.
Check control panel SUMP HEAT/PUMP HEAD OFF/ON switch. Turn on.
WARNING
Turn off pump heat/sump heater switch before proceeding. Failure to do so could result in electrocution.
Step 2.
Check heat bulb. Replace if broken or burned out.
Step 3.
Check electrical connectors. Clean and tighten connectors.
Step 4.
Notify unit maintenance.
13.
Dispensing nozzles leak or are plugged.
Step 1.
Notify unit maintenance.
PRESSURE GAGES.
1.
Leak.
Step 1.
Notify unit maintenance.
2.
Do not zero or are inaccurate.
Step 1.
Notify unit maintenance.
3.
Show no pressure.
NOTE
Some gauges are inoperative in different modes of operation. Make sure gauge works in system
"normal".
Step 1.
Check manual valves for position. Place valves in correct position.
Step 2.
Check auto valves for position. Refer to auto valve troubleshooting if a valve will not operate correctly.
Step 3.
Check pressure gage drain valve positions. Make sure drain valves are closed.
Step 4.
Notify unit maintenance.
4.
System pressure gauge fluctuates.
NOTE
Do not operate if fluctuations are moderate to severe.
Step 1.
Notify unit maintenance.
5.
Media filter or cartridge filter gauges fluctuate.
NOTE
Do not operate if fluctuations are moderate to severe.
Step 1.
Check media filter air blanket indicator. Refer to media filter troubleshooting if air blanket is not present in
filter or all air chamber flags are all red or all white. Refer to high pressure pump vibration
troubleshooting.
Change 7 3-33
