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| 5.0 installation
5.4.2 Remove the Power Distribution Cover or Box from S4K6U10KC Models
1.
Shut down the S4K6U10KC by pressing the Standby/Manual Bypass button twice (hold the button down for about 2
seconds each time) while the UPS is in Bypass Mode. For help, refer to “8.5 Shut Down the S4KC”.
2.
Loosen the captive screw over the maintenance bypass breaker (see Figure 5 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.
Support the power distribution box and remove the two screws at the top of the box.
6.
remove the cover or power distribution box from the UPS and set it aside.
7.
if removing a power distribution box, carefully pull apart the power distribution box connector and the UPS
connector.
Tabs slip into slots on UPS
Extract screws at these places
Pigtails
removed for
clarity
Figure 20: Power distribution box removal from S4K6U10KC
5.4.3 Install the Power Distribution Box on S4K4U6000C Models
1.
Align the connectors and press the power distribution box onto the UPS.
2.
Hold the box firmly against the UPS and tighten the captive screws, except the one over the maintenance bypass
breaker.
3.
Turn the output and input breakers on.
4.
Start the UPS according to startup instructions.
5.
Verify that the UPS lamp is illuminated.
6.
Turn the maintenance bypass breaker off.
7.
insert the maintenance bypass cover behind the captive screw and tighten the screw.
NOTE:
The maintenance bypass breaker cover must be installed behind the captive screw and the screw must be
tightened for the UPS to operate in inverter Mode.