TM 5-3610-294-13&P
4-10. UNIT TROUBLESHOOTING. - Continued
Table 4-2. Unit Troubleshooting (Cont.)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
8.
POWER DISTRIBUTION BOX ASSEMBLY DOES NOT OPERATE. - CONT.
Step 2.
Close phase test switch (2) and observe that correct phase light (3) is lit. If correct phase light is lit,
replace circuit breaker CB1 (1). (Paragraph 4-23a.)
Step 3.
Check generator output.
Replace generator. If generator output is proper, replace generator cable (4).
b.
No power to one module.
Step 1.
For Modules B and C, test for input voltage and phase at Shelter Phase Monitor Meter.
If correct voltage and phase are present, troubleshoot shelter electrical system. See TM 10-5411-200-
14.
Step 2.
Request Module C supervisor set CB1 to OFF. Remove power cable and test for continuity.
Replace power cable.
Step 3.
Request generator operator to shut down generator. Check for broken or grounded wiring on output
receptacle on power distribution box.
Replace power distribution box (refer to Paragraph 4-23).
c.
No voltage measured and no frequency measured on all phases.
Step 1.
Close phase test switch (2) and observe that correct phase light (3) is lit.
If correct phase light is lit, replace fuse (5). If malfunction continues, replace phase switch (10).
(Paragraph 4-23d.)
Step 2.
Check generator output.
Replace generator. If generator output is proper, replace generator cable (4).
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