Powerware 9170+ - Manual (Page 79)

Maintenance
75 Powerware ® 9170 User's Guide S LTM-1344 B Uncontrolled Copy
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 hotĆswap 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.