Heatsink Thermal Sensor; Scr Modules - GE AF-650 GP Operating Instructions Manual

9.2.7 Heatsink Thermal Sensor

1. Remove power card mounting plate in accordance with instructions.
2. Remove soft charge mounting plate in accordance with instructions.
3. Remove heatsink thermal sensor by removing screw fastener (T20) mounting sensor to heatsink.
Reinstall in reverse order of this procedure. Tighten T20 screws to 1.0 Nm (20 in-lbs).

9.2.8 SCR Modules

1. Remove power card mounting plate in accordance with instructions.
2. Remove soft charge mounting plate in accordance with instructions.
3. Remove six nuts (13mm), two from each SCR module, on (+)DC bus bar.
4. Remove two nuts (17mm) (+)DC bus bar and remove (+)DC bus bar.
5. Remove six nuts (13mm), two from each SCR module, from AC input bus bar.
6. If removing more than one SCR module, note which gate lead attaches to which module. Unplug gate lead from SCR module.
7. Remove four mounting screws (T30) and washers attaching SCR module to heatsink back panel.
Reassembly
1. Replace SCR module in accordance with instructions included with replacement module.
2. Reassemble in reverse order of this procedure.
1 13mm retaining nut (step 5)
2 17mm retaining nut (step 4)
High Power Service Manual for Unit Sizes 6x
1
2
3
4
3 13mm retaining nut (step 3)
4 SCR module
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