Vertiv | Liebert® GXT5™ | Installer/User Guide 87
b. Lift the maintenance bypass breaker cover up and tighten the lower maintenance bypass breaker captive
screw.
2. Conrm that the UPS is operating in internal bypass. If not, then manually transfer the connected equipment
to bypass as follows:
a. From the main menu select CONTROL, then press Enter.
b. Select Turn on/o/to bypass and press Enter.
c. Select Turn to bypass and press Enter.
• The load is unprotected from disturbances in the power supply while the UPS is on bypass.
3. Turn maintenance bypass breaker on.
4. Turn the internal bypass o as follows:
a. From the main menu select CONTROL, then press Enter.
b. Select Turn on/o/to bypass and press Enter.
c. Select Turn o UPS and press Enter.
5.. Turn o breakers as follows:
a. For 5-kVA and 6-kVA models, Turn o input breaker, 40A output breaker.
WARNING
Do not turn o 10A output breakers.
b. For 8-kVA and 10-kVA models, Turn o input breaker, bypass breaker, 63A output breaker,
WARNING
Do not turn o 10A output breaker and 16A output breaker.
6. Do not perform any operations until the UPS is completely turned-o.
7. Loosen other captive screws until the power-distribution box releases.
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