Powerware 9170 User Manual page 112

Troubleshooting
Question: "How do I... "
Check the battery
voltage?
Check the condition of
the batteries?
Change the battery
low-voltage alarm
threshold? (or any other
alarm or operating limit?)
Apply power to the load if
the unit won't operate?
Turn the external bypass
switch?
Set the UPS to turn on in
High Efficiency mode?
Set the UPS to operate in
High Efficiency mode on
weekends?
Change the level of
system redundancy?
Change the batteries?
Add/delete one or more
strings of batteries?
Add/delete one or more
power modules?
104
Answer
Go to menu 1-3-1. To view other system status parameters, see the Menu map
on page 85.
The results of the most recent battery test are stored at menu 3-1-2-1. To run a
test of battery condition, go to menu 3-1-1 and press the
test is complete, the results are again stored in the Battery Results parameter.
This is one of the parameters that require a trained person, knowing the
correct password, to perform. Without the proper password, you are only able
to view operating limits, not change them. Only authorized personnel should
change these limits. For information about making this or other
password-protected adjustments, contact your service representative.
Turn the optional external bypass switch to either the SERVICE or the LINE
position. In these two positions, utility power flows directly to the load. In the
SERVICE position, the UPS does not receive utility power and may be worked
on for maintenance purposes.
If the bypass switch is a Make-Before-Break type, you must press the red
button beside the switch before turning the switch.
Go to menu 4-1. Select the system mode desired at power-on by pressing the
or button. When the display shows Auto High Efficiency, press the
Y B
button.
+
The Powerware 9170 system will not change operating modes as a timed
event. But, if you wish to conserve energy, before leaving for the weekend, go
to menu 4-1. Select High Efficiency and press the
weekend, return to the Automatic mode by going to menu 4-1 again, and
selecting Auto followed by pressing the
To view or change the redundancy level, go to menu 4-2-5.
Each side-by-side pair of battery modules forms one series string on the battery
bus. See "Battery Replacement" on page 93 for the battery replacement
procedure.
Physically install or remove battery modules as described on page 64. Record
capacity of external battery strings (in all external battery cabinets) by going to
menu 4-2-6.
Physically install or remove power modules as described on page 64. The
system operating software senses the number and location of all power
modules in the cabinet. If you want to change the number of redundant power
modules, go to menu 4-2-5 and change the level of system redundancy.
Powerware 9170
®
button. After the
button.
+
UPS User's Guide Rev B www.powerware.com
S
button. When the