S4KC SEriES USEr mAnUAL |
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5.4 Connect Input/Output Power
!
wARNINg
Risk of electric shock; can cause injury or death. Disconnect all local and remote electric power supplies. Ensure that
the UPS is shut down and power has been disconnected before beginning any work on or in the unit.
The S4K4U6000C is shipped with a power distribution box attached. The S4K6U10KC is shipped with a cover plate over
the power distribution connector. Follow the instructions below for removal and installation.
NOTE:
Do not operate the UPS with the power distribution box removed. To shut off all power to this box and to the load,
utility input power must be disconnected.
5.4.1 Remove the Power Distribution Box from S4K4U6000C Models
1.
Put the S4K4U6000C into maintenance bypass by pressing the Standby/manual Bypass button once (hold it for about
2 seconds) while the UPS is in Utility (Ac) mode. For help, refer to “8.4 Put the S4KC in manual Bypass”.
2.
Loosen the captive screw over the maintenance bypass breaker (see Figure 19 for the breaker’s location).
3.
Turn the maintenance bypass breaker On.
NOTE:
The load is unprotected from disturbances in the power supply while the UPS is on bypass.
4.
Turn the output and input breakers OFF.
5.
Loosen other captive screws until the power distribution box releases.
6.
remove the power distribution box from the UPS and set it aside.
7.
Loosen the screws over the plastic cover for the connector on the rear of the panel.
8.
Slide the plastic cover over the connector and tighten the screws.
Maintenance bypass breaker
Extract these four
captive screws
Pigtails
removed for
clarity
Figure 19: Power distribution box removal from S4K4U6000C