UPS Maintenance8-2 Eaton 93PM UPS (20–100 kW, 480V – 100 kW Frame) Installation and Operation Manual P-164000227—Rev 6 www.eaton.com/powerquality8.2 Performing Preventive MaintenanceThe UPS system requires very little preventive maintenance. However, the system should be inspectedperiodically to verify that the units are operating normally and that the batteries are in good condition.8.2.1 DAILY MaintenancePerform the following steps daily:1. Check the area surrounding the UPS system. Ensure the area is not cluttered, allowing free access to theunit.2. Ensure the air intakes (vents on the front door of the UPS cabinet and the exhaust openings (on the rear ofthe UPS cabinet) are not blocked.3. Ensure the operating environment is within the parameters specified in paragraph 3.2.1 and Chapter 9,“Product Specifications.”4. Ensure the UPS is in Normal mode (Normal status indicator is illuminated). If an alarm lamp is illuminatedor the Normal status indicator is not illuminated, contact an Eaton service representative.8.2.2 MONTHLY MaintenancePerform the following steps monthly:1. Monitor system parameters as described in paragraph 6.2, “Using the Control Panel”.2. Check the UPS air filter (located behind the front door) and wash or replace as necessary. See Figure 8-1for filter location. Contact an Eaton service representative for replacement filters.CAUTIONVerify washed filter is thoroughly dry before reinstalling.To remove the filters:a. Unfasten the front door by lifting the latch from the bottom and turning to the right (counterclockwise)and swing the door open (see Figure 6-1).b. Remove the foam filters from the frame on the front door.c. Replace the washed or new foam filters into the frame on the front door.d. Close the front door and secure the latch.3. Record maintenance results and any corrective actions in a suitable log.
