Powerware 9170+ - Manual (Page 34)

Electrical Installation
30 Powerware ® 9170 User's Guide S LTM-1344 B Uncontrolled Copy
UPS Installation with an External Bypass Switch
W A R N I N G
Only qualified service personnel (such as a licensed electrician) should perform the
electrical installation. Risk of electrical shock.
C A U T I O N
To prevent electrical shock or damage to the equipment, verify that the Powerware
9170 UPS is OFF before you remove the entrance panel. The circuit breaker or
disconnect switch must also be off at the AC input service panel. Also, turn OFF the AC
disconnect and bypass switches before you connect any wires to the bypass switch
terminal strip.
1. Mount the bypass switch within sight of the UPS. If you do not
have a Powerware bypass switch or the fuse box or panel is out
of sight, you must install a separate disconnect switch next to
the UPS.
The bypass switch should be mounted securely to a sturdy
surface. You may need to turn the cabinet 90 degrees (on its
side) to enable operator access to the switch handle.
2. Remove the six screws in the bypass switch front panel and
remove the panel. Remove any packing material inside the
bypass switch.
Remove knockouts in the bottom of the bypass switch for AC
Line Input, AC to UPS Input, AC from UPS Output, and AC to
the UPS load.