Lincoln Electric POWER WAVE SVM173-A - Manual (Page 106)

TROUBLESHOOTING & REPAIR
F-60 F-60
POWER WAVE 455M/MSTT Retur
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INPUT
CONTACTOR
601
X4
FAN MOTOR
LEADS
X3 X5
POWER BOARD
RECTIFIER BRIDGE
X1
X2
+
-
RECONNECT
TERMINALS
CB4
H1
H2
H3
H4
H5
FIGURE F.20 – AUXILIARY TRANSFORMER NO. 1 REMOVAL AND REPLACEMENT
AUXILIARY TRANSFORMER NO. 1 REMOVAL AND
REPLACEMENT PROCEDURE (CONTINUED)
REMOVAL PROCEDURE
1. Remove input power to the Power Wave
455.
2. Using the 3/8” nut driver, remove the case
top, and input access panel.
3. Perform the Capacitor Discharge proce-
dure.
4. Using the 3/8” nut driver, remove the case
back.
5. Remove lead X4 from the input contactor
coil terminal.