Specifications

DXC-100PSX Fan Assembly Replacement Procedure A-1
Appendix A
Replacing the DXC-100PSX
Fan
A.1 Scope
The Protection Switch can detect a change in fan speed. The slow condition could
be due to a failure of a fan such as worn bearings, open winding in the motor or
shorted winding in the motor. If a fan fails, the entire fan assembly unit must be
replaced.
Before removing the fan assembly, make sure the fans are turned off. Refer to
the procedure on changing the fan setting.
A.2 Fan Assembly Replacement Procedure
1. From the Protection Switch Main Menu, select the Status field and press
<Enter>. The Protection Switch Status Menu appears.
2. Place your cursor on the
Fan Maintenance field and press <Enter> to toggle
between the options. Change the setting to
Off .
3. Locate the grille containing the filter on the front of the Protection Switch.
Unscrew the four screws on the grille and remove the grille from the
Protection Switch.
4. Turn the four knurled nuts counter-clockwise to remove the fan assembly.
Figure A-1. Front View of Fan Assembly
5. Disengage the fan connector from the PC board and pull out the defective
fan assembly.
6. Engage the replacement fan assembly connector to the PC board, making
sure it is properly connected.
Note