Vertiv Liebert EXM, Руководство пользователя

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Vertiv™ | Liebert® EXM™ UPS 20-100kVA, 50/60Hz User Manual | 63
8.3.1 Record Log
Set up a maintenance log to record scheduled checks and any abnormal conditions.
The log should have space for all metered data including phase readings, alarm messages, UPS mode of
operation, air filter replacement date and observation notes. A second log should be maintained for the battery
module as directed by the battery manufacturer.
Vertiv
™
recommends a periodic walk-through inspection of the UPS and battery rooms to check for visible and
audible indications of problems. Log the inspection, metered parameter indications and any discrepancies.
8.3.2 Air Filters
The air filters must be inspected and serviced on a regular schedule. The period between inspections will
depend upon environmental conditions. Under normal conditions, the air filters will require cleaning or
replacement approximately every two months.
All Liebert
®
EXM models have replaceable filter elements behind the grille in the front of the unit. This element
can be changed with the UPS operating by opening the outer door. The Liebert
®
EXM’s air filters are washable
and reusable. One set of air filters is shipped with each Liebert
®
EXM.
Abnormal or dusty conditions will require more frequent cleaning and replacement of air filters. Inspect
installations in new buildings more often, then extend the inspection period as experience dictates.
Replacing Air Filters
Installing the two air filter sizes in a Liebert
®
EXM requires only a Phillips screwdriver. Each filter is held in place
by a bracket on either side of each filter. Refer to 8.3.2 - Air Filters for details about filter maintenance.
To replace a filter:
1. Open the UPS front door, and locate the filters on the back side of the front door (see Figure 29 ).
2. Remove one bracket and loosen the screw on the second bracket. The second bracket need not be removed.
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.