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LTPS-UM-8007-01, Issue 1
Appendix A - Maintenance
SPX-CABFIN01, SPX-CABFIN04
November 9, 2001
65
Replacing the Bottom Fan Assembly
1
Remove one fan mounting bolt. The heat exchanger should be removed and hang on the end chamber door
as shown in
2
Support the fan assembly with one hand, and remove the second fan mounting bolt. The fan drops free for
removal.
3
On the replacement fan assembly, note the indicated air flow direction. The correct air flow is out (away from
the heat exchanger).
4
Position the replacement fan on the heat exchanger, and secure with two mounting bolts.
5
Insert the power lead and connector into the retaining clip on the side of the heat exchanger.
6
Install the heat exchanger.
Replacing the Heat Exchanger
1
Verify that the top fan assembly is installed and connected.
2
Lift the heat exchanger into place between the lower plenum and the top fan assembly. Keep the heat
exchanger aligned vertically.
3
Align the bottom of the heat exchanger over the lower plenum. Pay special attention to the alignment of the
draw latches and locking clips.
4
Align the top of the heat exchanger under the top fan assembly.
5
Secure the two lower, and then the two upper draw latches. While the upper latches are being closed, verify
that the top fan assembly moves up as the heat exchanger is locked into place.
6
Connect the bottom fan power connector as shown in
7
Verify that the heat exchanger fans are operating.
D
ISCONNECTING
E
MERGENCY
P
OWER
1
At the power transfer cabinet (JuiceBox), set the power control switch to the middle position, disconnecting
both the generator and the commercial power.
2
Shut down the generator.
3
Disconnect the AC generator plug from the power transfer cabinet receptacle.
Be careful to avoid the draw latches; the handles snap closed when secured.
At Step 1, the system is temporarily running on batteries.
Ensure that Step 1 has been performed. High voltage is present in the cabinet.