TM5-6625-2694-13&P
Table 5-1.
Direct Support Troubleshooting (cont'd)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step
3
Check Contactor Relay K4.
3 (+);
Measure voltage across terminals 1 (-) to
should be 24 VDC.
terminals 5 (+)
to 4 (-);
b.
Measure voltage across
should be 0 VDC.
and replace Contactor
Refer
to paragraph
c.
if measurement across
terminal 1 to terminal 3
4 to
and measurement
terminal
across
is 24 VDC
terminal 5 is NOT 0 VDC.
4.
PARTIAL LOAD APPLIED TO GENERATOR.
Step 1.
Check Contractors K1 and K2.
terminal
and
Measure
a.
voltage across terminal X1
X2 of each contactor.
Should read 24 VDC.
applied to terminals
X1 and X2,
b.
With 24 VDC
input terminals of
Contactor to
measure voltage from
to LO.
terminals of Contactor
LO and from output
Measurements should be equal.
and replace Contactor if
Refer to paragraph 5-12
c.
measurements from input and output terminals to LO are
NOT equal.
5-6