Figure 152: Connecting Power Cables To The Dc Power Supply - Juniper mx240 Hardware Manual

MX240 3D Universal Edge Router Hardware Guide
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Secure the power cable lug to the terminal studs, first with the flat washer, then with
4.
the nut. Apply between 23 lb-in. (2.6 Nm) and 25 lb-in. (2.8 Nm) of torque to each
nut (see Figure 74 on page
torque-controlled driver or socket wrench.)
CAUTION: Ensure that each power cable lug seats flush against the surface
of the terminal block as you are tightening the nuts. Ensure that each nut
is properly threaded onto the terminal stud. The nut should be able to spin
freely with your fingers when it is first placed onto the terminal stud.
Applying installation torque to the nut when improperly threaded may
result in damage to the terminal stud.
CAUTION: The maximum torque rating of the terminal studs on the DC
power supply is 36 lb-in. (4.0 Nm). The terminal studs may be damaged
if excessive torque is applied. Use only a torque-controlled driver or socket
wrench to tighten nuts on the DC power supply terminal studs.

Figure 152: Connecting Power Cables to the DC Power Supply

Verify that the DC power cable is connected correctly, that it does not touch or block
5.
access to router components, and that it does not drape where people could trip on
it.
Replace the clear plastic cover over the terminal studs on the faceplate.
6.
Attach the power cable to the DC power source.
7.
Turn on the dedicated customer site circuit breaker to the power supply.
8.
203). Do not overtighten the nut. (Use a 7/16-in. [11 mm]
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