TM 10-6640-233-10
Table 3-1. Troubleshooting (cont.)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
13. VACUUM PUMP FAILS TO DEVELOP A VACUUM (MOTOR RUNNING).
Check for broken or loose drive belt.
Replace or tighten belt as required. (Refer to appropriate TM listed in Appendix A).
14. LOW VACUUM PRESSURE.
Step 1. Check for open valves in the system.
Close all valves.
Step 2. Check for leaks in the system.
If leaks are found, notify unit maintenance.
15. WATER PUMP FAILS TO RUN.
Check and reset circuit breaker No. 14 located in Main Power Panel.
If motor still fails to run, notify unit maintenance.
16. WATER PUMP FAILS TO DELIVER WATER AT PROPER PRESSURE.
Step 1. Check level in water tank.
If level is low, fill water tank.
Step 2. Check for leaks in the system valves, piping and at the pump shaft seal.
If leaks are found, notify unit maintenance.
17. WATER PUMP, CONTINUALLY CYCLES ON AND OFF.
Step 1. Check system access valves for partially open valves(s).
Close all access valves.
Step 2. Check system piping for leaks.
If leaks are found, notify unit maintenance.
Step 3. Check operation of water system pressure switch.
a. Adjust pressure switch. (Refer to appropriate TM listed in Appendix A).
b. If pressure switch will not adjust properly, notify unit maintenance.
3-5
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