Maintenance

4.Press down on the secondary stop release, pull the module out further, and support the module weight with your second hand as you remove the module from the cabinet. Remove the battery module beside the first in a similar manner.

5.After removing a pair (one string) of battery modules, install a replacement pair. Replacements may be installed in empty cabinet slots before removing original battery modules.

6.When all desired battery modules have been replaced, reinstall the front panel bezel(s).

Power Module Replacement

The Powerware 9170 hot￿swap feature allows you to replace a power module easily without disconnecting the load or damaging the UPS.

NOTE The UPS may switch to internal bypass if the remaining power modules are insufficient to supply the required power. If empty slots exist, install replacement modules before removing original ones.

Use care in removing and installing power modules. To remove a power module:

1.Loosen the thumbscrew on the module handle. Press down on the latch release at the center of the module handle and pull the handle down.

As the handle fully extends, the module disconnects. Slide the module slowly out of the cabinet.

2.Use two hands to support the module. When fully extended, lower the front down slightly and lift the rear edge over the safety stop on the center support rail.

3.Treat the original and replacement modules with care to avoid damaging connectors or internal circuitry. Label the original module with masking tape or some other identifier. Record the serial number of the replacement module for your warranty.

Powerware® 9170 User's Guide ￿ LTM-1344 B Uncontrolled Copy

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