Lincoln Electric 10372 Service Manual page 154

F-90
OUTPUT RECTIFIER
FIGURE F.26 — OUTPUT RECTIFIER
RECTIFIER
REMOV L PROCEDURE
1. Remove input power to the Power
Wave 455.
2. Using the 3/8 in. nutdriver, remove the
case top and sides.
3. Perform the Capacitor Discharge
Procedure.
4. Using the 9/16 in. wrench, remove the
positive output lead from the rectifier
heatsink. Refer to Figure F.26.
TROUBLESHOOTING ND REP IR
ND MODULE REMOV L
ND MODULE REMOV L
SSEMBLY
POWER W VE 455/POWER FEED 10
ND REPL CEMENT ( ontinued)
ND REPL CEMENT.
TRANSFORMER
LEADS
RECTIFIER
MODULE
THERMOSTAT
HEATSINK
5. Using the 7/16 in. wrench, remove the
eight transformer leads from the rectifi-
er modules. Label the leads and take
note of lead placement for reassembly.
Note that each screw has two flat
washers and one lock washer.
6. Remove leads #220 and #290 from the
rectifier thermostat.
7. Using the 7/16 in. wrench, remove the
four nuts and associated washers from
the heatsink mounting bolts. The heat-
sink assembly can be removed by
carefully sliding the assembly forward
and removing the mounting bolts.
F-90
POSITIVE
OUTPUT
LEAD
HEATSINK
MOUNT
BOLTS (4X)