TM 10-4510-206-14
TO 40P1-6-2-1
5-7.
REPAIR PROCEDURES (CONT’D)
P-
Master Control Box Assembly (Cont’d)
8 .
To test low water relay (14) disconnect terminal lug at terminal 2
and check continuity between terminals 1 and 2.
If meter reading
i s s h o r t o r o p e n c i r c u i t e d, replace low water relay (steps 19 and
2 0 ).
C h e c k c o n t i n u i t y f r o m e i t h e r t e r m i n a l 1 o r t e r m i n a l 2 to
chassis ground.
If shorted (O-ohms), replace relay.
Connect ter-
m i n a l l u g t o t e r m i n a l 2.
9.
Disconnect terminal lug at terminal 9 and repeat step 8 using ter-
minals 9 and 10.
R e p l a c e t e r m i n a l l u g a t t e r m i n a l 9.
10.
Check continuity between terminals 3 and 4.
Meter reads continui-
t y-
Replace low water relay if reading not normal.
11.
Check continuity between terminals 7 and 8.
Meter reads open cir-
c u i t .
Replace low water relay if reading not normal.
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