Troubleshooting & repair – Lincoln Electric POWER WAVE SVM173-A User Manual
Page 110
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TROUBLESHOOTING & REPAIR
F-64
F-64
POWER WAVE 455M/MSTT
INPUT
CONTACTOR
601
X4
CB4 CIRCUIT
BREAKER &
115V RECEPTACLE
LEADS 33/32
P50
P52
FIGURE F.21 – AUXILIARY TRANSFORMER NO. 2 REMOVAL AND REPLACEMENT
AUXILIARY TRANSFORMER NO. 2 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. Disconnect plugs P50 and P52.
6. Disconnect leads 33 and 32 to circuit breaker
CB2 and the 115 V receptacle.
7. Using the 3/8” nut driver, remove the two
transformer mounting screws.
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