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5.3
Startup
A qualified electrician should be employed to perform the equipment inspection and startup.
Liebert system startup may be arranged by calling your local Vertiv sales representative or Vertiv.
In the United States, call 1-800-543-2378.
A copy of the appropriate checklist (furnished with the equipment) must be completed, signed,
dated and returned to Vertiv. Warranty coverage of the equipment is not effective unless the
checklist is received by the factory.
WARNING
Equipment inspection and startup should be performed only by qualified trained personnel.
Electrical safety precautions must be followed throughout inspection and startup.
Hazardous voltages are present in the equipment throughout the majority of the startup
procedure. Use proper safety equipment. Proceed with caution.
5.3.1
Startup Checklist
___ 1. Make certain that all circuit breakers are in the Off position and that power to the unit is locked out.
___ 2. Verify proper input power connections to unit, including the equipment grounding conductor.
___ 3. Turn On the building power to the unit.
___ 4. Check the phase rotation at the input busbars. Phase rotation should be A, B, C, left-to-right.
___ 5. Check and record the input voltage. Measured voltages should correspond to the unit's nameplate input
voltage.
Volts, Phase A to Phase
B =
Volts, Phase B to Phase
C =
Volts, Phase C to Phase
A =
___ 6. Check the phase rotation at the panelboard main breakers. Phase rotation should be A, B, C, left-to-right.
___ 7. Check the phase rotation at the transformer output. Phase rotation should be A, B, C, left-to-right.
___ 8. Check and record the input voltage at each of the panelboard main breakers. Measured voltages should
correspond to the unit's nameplate input voltage.
Volts, Phase A to Phase
B =
Volts, Phase B to Phase
C =
Volts, Phase C to Phase
A =
If output voltage or phase rotation is incorrect, check for wiring errors or incorrect input voltage, Contact
Vertiv at 1-800-543-2378) in the USA or the local factory representative for assistance.
___ 9. Turn On the panelboard main breakers.
___ 10.Replace internal and external panels, if supplied.
Vertiv
| Liebert
Distribution Cabinet
™
®
Input
Panelboard 1
Panelboard 2
for Liebert EXM
User Manual |
™
™
Panelboard 3
Panelboard 4
25
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