GE Industrial Solutions AF-600 FP High Power (460V_575V 150HP and above) - Manual (Page 141)

11. Note which gate lead connects to which SCR module. Ensure that the correct wire is attached to the applicable SCR upon reassembly. Remove the
wiring from each SCR module. The connector is keyed for proper reinstallation. DO NOT force the connection.
12. Remove the SCR or diode module by removing the 4 retaining screws (T25) from each module.
130BX107.10
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Illustration 8.1: SCR and Diode Modules (3 of 3)
1 SCR module SCR2 5 Diode module D1
2 Retaining screw (Step 12) 6 Diode module D2
3 SCR module SCR1 7 Diode module D3
4 SCR gate lead connection (Step 11) 8 SCR module SCR3
REASSEMBLY
Equipment Damage!
Do not reverse the SCR and diode modules during installation. Reversing the SCR and diode modules can result in equipment damage.
NB!
For each AC input phase, there is one SCR module and one diode module. The SCR is on the left, the diode on the right (as seen facing the upright unit). There
are three pairs. Only the SCR module has a connection pin for the gate signals.
1. Replace SCR and diode modules in accordance with the instructions included with the replacement modules.
2. Reassemble in reverse order.
Attaching Hardware Tightening Torque
T50 Per spare part instruction
T25 Per spare part instruction
17 mm 19 Nm (170 in-lbs)
13 mm 9.5 Nm (85 in-lbs)
10 mm 4 Nm (35 in-lbs)
8 mm 2.3 Nm (20 in-lbs)
AF-650 GP and AF-600 FP High Power Service Manual
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