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7 replacing dust filters, Figure 75 replacing the dust filters, 8 redundant fan for power module – Emerson Liebert NX 50 and 60 Hz User Manual

Page 121: Replacing dust filters, Redundant fan for power module

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Options—For Assembly Inside the UPS Cabinet

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9.1.7

Replacing Dust Filters

Installing the two dust filters in the Liebert NX requires only a Phillips screwdriver. Each filter is

held in place by a bracket on either side of each filter. To install each filter:
1. Open the UPS door and locate the filters on the back side of the front door (see Figure 75).
2. Remove one bracket and loosen the screw on the second bracket. The second bracket need not be

removed (see Figure 75).

3. Remove the dust filter to be replaced.
4. Insert the clean filter.
5. Reinstall the bracket, tightening the screw securely.
6. Tighten the screw on the second bracket.

Figure 75 Replacing the dust filters

9.1.8

Redundant Fan for Power Module

In addition to the monitored fans installed in the UPS cabinet to ensure sufficient cooling power at

various operation modes with 100% rated load, a redundant power module fan set can be supplied,

thus ensuring continuity of UPS operation even with the failure of some fans. No extra footprint is

required.

Bracket

Sems screw

Bracket

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