TM 5-6675-319-14
Table 1-2. TROUBLESHOOTING - Cont
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1.
NO ELECTRICAL POWER TO SECTION - Cont
Step 1.
Observe voltage and frequency for phases A, B, and C. Read 115
+ 5 V, 60 + 1 Hz.
( a ) I f v o l t a g e a n d f r e q u e n c y a re
( b ) I f v o l t a g e a n d f r e q u e n c y a re
s u p e r v i s o r .
CAUTION
correct, proceed to step 2.
incorrect, notify power supply
Do not energize section if voltage or frequency is not correct. Damage
to equipment may result.
Step 2.
Press phase test switch on power panel for A, B, and C.
(a) If phases A, B, and C are correct, proceed to step 3.
( b ) I f i n c o r r e c t p h a s e l a m p l i g h t s , n o t i f y p o w e r s u p p ly
s u p e r v i s o r.
CAUTION
Do not energize section if incorrect phase
may result.
Step 3.
Check safety switch position .
l a m p l i g h t s .
Damage to equipment
(a) If safety switch is ON, proceed to step 4 .
(b) If safety switch is OFF, turn ON .
Step 4.
Check main circuit breaker position .
( a ) I f c i r c u i t b r e a k e r i s O N , r e f e r t o d i r e c t / g e n e r a l s u p p o rt
maintenance.
( b ) I f c i r c u i t b r e a k e r i s O F F , t u r n O N.
( c ) I f c i r c u i t b r e a k e r t r i p s r e p e a t e d l y , n o t i f y p o w e r s u p p ly
s u p e r v i s o r .
1-48
