GE Industrial Solutions GPS 4848_100 Users Guide (single rectifier shelf) - Manual (Page 74)

Galaxy Power System 4848/100 with 595 Series Rectifiers S1:3 and later
11 - 10 Maintenance and Replacement Issue 10 February 2008
Replacement Procedures, continued
Replacing the Rectifier Fan Assemblies, continued
Step Action
4 Remove the 4 fan screws attaching the fan to be replaced to
the chassis, and carefully unplug the fan connector. The fan
connector is keyed and can be loosened by inserting a
screwdriver into the slotted side of the connector and gently
prying the fan-side connector loose.
5 Place the new fan in position and torque screws to 10 in-lb.
6 Replace the front cover.
7 Install the rectifier following the “Installing or Replacing a
Rectifier” procedure in this section.
8 Test replaced rectifiers using the “Testing Additional Alarms
After Replacement of Rectifiers” procedure in this section.