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TROUBLE, SYMPTOM
TEST, CHECK, AND/OR
AND CONDITION
PROBABLE CAUSE
REMEDY
LOAD CONTACTOR OPERATING CIRCUIT
1. Load contactor (K1)
A. In addition to de-
A. After checking fuse (F1) in
will not close when
fective wiring and
step (1) below, check all
control switch (20,
connections in the AC
wiring and connections in
Fig. 1) is held in
and DC load contactor
the load contactor circuits.
ON position. Gener-
actuating circuits,
Then check components as
ator running at
the load contactor
follows:
normal voltage. No
may be prevented from
fault lights on.
closing for any one
of the following
reasons:
(1) Blown fuse (F1)
(1) Remove and inspect fuse.
(1-1; 16, Fig. 8)
Replace if blown.
(2) Defective (open)
(2) Replace protective
relay in protec-
module with a module
tive module (1-1;
known to be operating
4, Fig. 8)
properly. If contactor still
doesn’t close,proceed to step (3).
(3) Defective load
(3) Set Regulated/Diagnos-
contactor control
tic switch (S1) in
switch (S5) (20,
REGULATED position.
Fig. 1)
Check AC voltage input
to contactor rectifier
(CR6). If voltage isn’t
approximately 115-V AC,
contactor control
switch is defective and
must be replaced.
(4) Defective recti-
(4) After making certain
fier (CR6) (1-1;
that contactor switch
5, Fig. 11)
(S5) is providing 115-V
AC to the rectifier
(CR6), measure DC out-
put voltage between
positive (+) and nega-
tive (-) terminals of
rectifier. If voltage
measured isn’t approxi-
mately 90-V DC, replace rectifier.
(5) Defective load
(5) Disconnect leads at load
contactor coil
contactor terminals X1 and X2.
(K1) (1-1; 6,
Check coil resistance between
Fig. 11)
these terminals. Resistance
should be approximately 600
ohms. If coil is defective, replace
the complete load contactor.
OM-2053
December 31/91 Revised
3-1
Page 15
Содержание 60PL20
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Страница 106: ...Generator Set Figure 1 OM 2053 4 3 December 31 91 Revised Page 2 ...
Страница 108: ...Canopy Assembly Figure 2 OM 2053 4 3 December 31 91 Revised Page 4 ...
Страница 110: ...Generator Set Without Canopy Specification 7009B 1 Illustrated Figure 3 OM 2053 4 3 December 31 91 Revised Page 6 ...
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Страница 114: ...Radiator and Cooling System Group Figure 4 OM 2053 4 3 December 31 91 Revised Page 10 ...
Страница 116: ...Air Cleaner Assembly Figure 5 OM 2053 4 3 December 31 91 Revised Page 12 ...
Страница 118: ...Electric Governor Kit Woodward Governor Figure 6 OM 2053 4 3 December 31 91 Revised Page 14 ...
Страница 120: ...Electric Governor Kit Barber Colman Governor Figure 6A OM 2053 4 3 December 31 91 Revised Page 16 ...
Страница 122: ...Fuel Lines Assembly Figure 7 OM 2053 4 3 December 31 91 Revised Page 18 ...
Страница 124: ...Oil Line Assembly Figure 8 OM 2053 4 3 December 31 91 Revised Page 20 ...
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Страница 132: ...Engine Control Panel Assembly Figure 11 OM 2053 4 3 December 31 91 Revised Page 28 ...
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Страница 138: ...Trailer Assembly Figure 14 OM 2053 4 3 December 31 91 Revised Page 34 ...
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