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8 - 18 kVA Start-Up Checklist
1. Open (turn OFF) UPS Output Circuit Breaker.
2. Open (turn OFF) customer supplied distribution circuit
breakers.
3. Turn OFF critical loads and plug them into output
distribution units or customer-supplied distribution.
4. Turn ON battery circuit breaker on rear of UPS.
5. Roll unit to final position. If using flexible conduit for
power connections, allow at least 18 inches of
clearance around the UPS with enough conduit to roll
UPS 3 feet from wall. If using rigid conduit, allow at
least 3 feet of clearance around the UPS. Adjust
leveling feet.
6. Close (turn ON) customer-supplied circuit breaker that
supplies power to the UPS.
7. Close (turn ON) the UPS Input circuit breaker to
supply power to UPS control circuits. The fans and
LCD display activate.
8. The LCD display prompts you to review and accept
default settings or configure the UPS for your
application. See page 11 for default settings.
9. After configuration, automatic self-tests begin. If self-
tests are OK, a horn sounds and the ”Close Breaker
then Press ON” message appears. If any other
message appears, contact Liebert at 1-800-222-5877.
10. Close (turn ON) Output circuit breaker on back of
UPS and press the ON button.
11. The UPS tests the inverter and displays the Normal
Operation message.
12. Close (turn ON) customer-supplied distribution circuit
breakers.
13. Turn on each critical load one at a time. The UPS
provides filtered, regulated power to protect valuable
processes and data.
8-18kVA Single Line Diagram
AUTO / MANUAL BYPASS
SURGE
SUPPRESSION
AND EMI
FILTER
BATTERY
CHARGER
BATTERY
INVERTER
INVERTER
AUTO / MANUAL
BYPASS
EMI
FILTER
FRONT END CONVERTER
G
L3 (OPT)
L1, L2
L1, L2
N
N
DC
G
L1, L2
N