Hobart 5359D Operation And Maintenance Manual page 173

OM 2012
(1) Defective AUTO-
(1)Chcck contacts and opcrc-
MANUAL switch (33,
tion of AUTO-Mki~I UAL
Fig. 1) switch. Replace i; defeci ive
(2) Clefective rectifier
(CR3j (Sect. l-l;
14, Fig. 9)
(3) Defective resisto:
(Rll) (See 1, Fig. 5)
(4) Defectike rheostat
Wl) (32, Fig. I)
\dO. 1 LOAD CONTACTOR OPERATING CIRCUiT
.
Load contcctor (K 1)
will not close when
control switch (20,
Fig. I) is he Id in
ON position .
Generator running
at normal voltage .
No fault lights on.
Avg 25%
4. In addition to defective
wiring and connections
in the AC and DC load
contactor actuating cir-.
cvits, the lioad contactor
may be prevented from
closing for any one of the
following reasons:
(J
)Blown fuse (Fl) (l-
16, Fig. 10)
1;
(2)Check diodes (see 2-3, Para,
6). Repiace rectifier if
defective.
(3)Jvmper resistor (1, Fig. 5).
If normal voltage (depending
on rheostat setting) is pro-
duced, replace resistor.
(43Connect a jvmper across
rheostat. If maximum (manuc
control) voltage is produced,
replace rheostat. .
Trouble Shooting, Chart (Sheet 13 of 21)
Figure 9
A. Afier checking fuse (Fl) in
step (1) below, check ail wiring
and connections in the load con-
tactor circuits on the engine
control pane I, protective reiay
tray, and power module. Then
check components as foilows:
(1)Remove and inspect fuse.
Replace if blown.
3-1
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