Juniper PTX5000 Hardware Manual page 237

Copyright © 2017, Juniper Networks, Inc.
Align the comb assembly for one PDU against the rack vertically. Move the comb
3.
assembly up or down so that the mounting holes are aligned to the mounting holes
on the rack.
Secure the comb assembly to the rack by using the four screws that were removed.
4.
See Figure 96 on page
NOTE: If the provided screws are not compatible with your rack, you might
have to use different types of screws (such as metric screws).
CAUTION: The maximum torque that may be applied to the provided
number 12 screws is 30.0 lb-in. (3.4 Nm).
Similarly, secure the comb assembly to the rack for the other PDU.
5.
See "Connecting Power to the PTX5000 High Capacity DC PDUs" on page 221
connect the power cables.
Route the power cables through the comb assembly. Ensure that you route each row
6.
of cables from the PDU through the corresponding row of the comb (see
Figure 95 on page 199).
Chapter 21: Connecting the Router to Power
202.
to
201