SECTION III
Operation
Page 3.30
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3.6 UPS Operating Procedures (continued)
3.6.3
UPS Maintenance Menu (continued)
3.6.3.3
SBS Maintenance Menu (continued)
5. When this message appears, open the
OUTPUT SWITCH
or
CIRCUIT BREAKER.
[On
single-input UPS, when the input voltage does
not equal the output voltage, place the rotary
switch in “maintenance” (open) position.]
Warning: With rotating Output Switch,
output transformer (T2) is
energized in Maintenance Bypass
mode.
6. When this message appears, open the
BATTERY CIRCUIT BREAKER.
7. On dual input UPS only – when this
message appears, open
SBS INPUT CIRCUIT
BREAKER.
8. When this message appears, open the
INPUT CIRCUIT BREAKER.
9. While this message is on the screen,
the link voltage will be gradually decreasing.
XXX.X represents the actual voltage as dis-
played. When the link voltage has decreased to
the proper value, the following screen message
will appear.
Open
Output
Breaker
Waiting…
DC Link=
XXX.X Vdc
Open
Input
Breaker
Open
Battery
Breaker
Open SBS
Input
Breaker