Lincoln Electric PRO-CUT 60 SVM104-A Service Manual page 85

TROUBLESHOOTING & REPAIR
SOCKET HEAD
CAP SCREWS
TORQUE TO
35 IN/LBS
(3.9 N/M)
FIGURE F.16-SCR Module Location with Power Board Removed
REMOVAL/REPLACEMENT
PROCEDURE
NOTE: See Figure F.16.
1. Disconnect input power to the
machine.
2. Remove the Left Case Side
assembly.
3. Perform
DISCHARGE PROCEDURE.
4. Perform the POWER BOARD
REMOVAL PROCEDURE.
SCR MODULE REMOVAL
the CAPACITOR
SCR
MODULES
5. Remove the two socket head
cap screws of the top SCR
module using a 4mm Allen-type
wrench.
6. Remove the SCR module from
the heat sink.
7. Remove the second SCR mod-
ule following Steps # 5 and # 6.
8. Install the replacement SCR
Modules. Procedure is the same
for both SCR modules.
a. Clean the heat sink surface
with "000 fine steel wool.
F-44
PRO-CUT 60