Lincoln Electric MULTI-SOURCE SVM155-A Service Manual page 74

F-46
INPUT CONTACTOR CLEANING AND/OR REPLACEMENT (Continued)
REMOVAL PROCEDURE
1. Disconnect input power to the machine.
2. Remove case sides and roof using a 3/8"
nut driver.
3. Label leads T1, T2, T3, U, V, W and their
respective terminals. See Figure F.19.
4. Using a 11/16" nut driver, remove the six
leads connected to the input contactor.
5. Using a 7/16" nut driver, remove the four
bolts mounting the input contactor to the
frame of the machine. Note washer posi-
tions for replacement. See Figure F.20.
6. Disconnect leads 240 and 241 using quick
connects located in loom.
7. Carefully lift input contactor out of machine.
TROUBLESHOOTING & REPAIR
FIGURE F.19. INPUT CONTACTOR (top view)
T3
T2
T1
TOP VIEW
FIGURE F.20. 7/16" MOUNTING BOLTS
Mounting Bolts
L E F T S I D E L E F T S I D E
MULTI-SOURCE
W
V
U
8. For contactor cleaning or inspection see
Figure F.21.
REPLACEMENT PROCEDURE
1. Mount input contactor to machine frame
using the four bolts, washers, and nuts
previously removed.
2. Reconnect leads #240 and #241.
3. Reconnect leads T1, T2, T3, U, V, W previ-
ously removed.
4. Replace case sides and roof previously
removed.
F-46