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Maintenance
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8.0 MAINTENANCE
8.1 Proper Care
Keeping your Liebert Nfinity Maintenance Bypass Cabinet operating properly is imperative to opti-
mal performance and life of the unit. It is recommended that a certified technician perform preventive
and corrective maintenance. Liebert Global Services (LGS) is dedicated to ensuring the highest level
of performance and unmatched support for your Nfinity Maintenance Bypass Cabinet. Contact an
LGS representative for services to guarantee maximum reliability and system availability.
8.2 Scheduled Maintenance
Liebert recommends performing the following maintenance at least monthly:
• Check, clean and replace filters.
• Verify that airflow is not obstructed.
Liebert recommends performing the following maintenance annually:
• Verify all power connections.
• Verify that all output distribution modules are operating properly.
8.2.1 Replacing Fan Filters—Transformer Models Only
The Maintenance Bypass Cabinet intake fans contain filters that will need to be replaced or cleaned
periodically, depending on the surrounding environment. Check by noting the condition of the two fil-
ters. If filters are dirty, replace or wash them. The filters may be taken out of the UPS for replace-
ment or cleaning by removing the plastic cover over the filter frame. Use caution when replacing
filters when fans are running.
The fan filters are washable and may be reused. To wash these filters, place them under a running
faucet (with the dirty side down) to remove dirt and dust. Blot dry with a towel and allow to air-dry
before reusing it.
Fan Filters