APC DP300E manual Preventive Maintenance, Fan, Battery

Preventive Maintenance

8.0Preventive Maintenance

8.1General

The maintenance of the Silcon DP300E UPS systems should be carried out by trained service engineers. We recommend that you obtain a service and mainte- nance contract from APC or an APC certified and approved provider.

8.2Fan

It is recommended to replace the fans. Please contact your local APC dealer for replacement interval.

8.3Battery

8.3.1Control of batteries

The batteries can be controlled in two ways:

1.Battery capacity test

2.Battery monitor test

For safety reasons battery tests should preferably be made during uncritical periods for the loads connected.

8.3.2Function of battery capacity test

When performing a battery capacity test, the system switches to battery operation until low DC warning appears. The back-up time is valid for the actual load on the UPS, however, if load changes, the actual back-up time will change too. Then the UPS system will switch back to normal operation and back-up time will be stored in the battery capacity menu, see also section 8.4 on how to perform the test.

8.3.3Function of battery monitor test

When performing an automatic or a manual battery monitor test, the back-up time is shown in the display and the condition of the battery is checked. The back-up time is valid for the actual load on the UPS, however, if load changes, the actual back-up time will change too.

See also section 8.5 “Battery monitor test” for more information and how to perform the test. The result is one of the following:

1.Battery is OK – nothing will happen. Normal back-up time is OK.

2.Battery has reduced capacity – “Battery weak” is given. Reduced back-up time.

3.Battery capacity far to low – “Battery defective” is given. Limited to no back-up time.

7OA0002 US rev. 04

32 User Guide Silcon DP300E Series 480V 240-320kVA