Installation Instructions
R20 1X UBS Macro B T S Hardw are Installation Adding Circuit Break ers/Connectors to PDU
Procedure 3 -1 Adding a Circuit Break er/Output P ower Connector Assembly to the
PDU (Continued)
5
P osition the circuit breaker/output power connector assembly as follows:
• Circuit breaker actuator at the bottom and the DC output power
connector at the top
• Circuit breaker actuator facing toward the front of the frame
• Align mounting screw holes of the circuit breaker/output power
connector assembly with the corresponding screw holes on the PDU
front panel DC output power bus.
6
Insert the supplied mounting screws into the screw holes.
T wo screws on top and bottom for the 90A assembly . One screw on
top and bottom for the 20A assembly .
Using a TORX T25 driver , tighten the mounting screws to 4.8 N-m (42.25
in-lb) ±10%.
7
Using side cutters, cut out the applicable circuit breaker actuator and the
corresponding connector covers on the PDU front panel (see Figure 3-1
Adding a Breaker Assembly Module to the PDU on page 3- 6 photograph C .
It may be necessary to use a small knife to remove any of the tabs
that do not cut cleanly .
8
Reattach the PDU front panel to the PDU as follows:
• See Figure 3-1 Adding a Breaker Assembly Module to the PDU on page
3- 6 photograph D .
• Align the PDU front panel with the PDU circuit breaker actuators and
power connectors while inserting the PDU front panel retaining tabs into
the retainer on the left and right front ends of the PDU .
• Slide the PDU front panel onto the front of the PDU .
• Firmly press on the ends of the PDU front panel until each end tab snaps
into place.
9
Set all PDU front panel circuit breakers to the off (pulled out) position.
10
Reconnect all DC power cables that were disconnected in step 2 of this
procedure. Make sure that each cable is connected to the proper PDU front
panel power connector .
68P09283A62 -3 3 -5
PRELIMINARY A UG 2007