Grounding The Mx240 Router - Juniper MX240 Hardware Manual

MX240 5G Universal Routing Platform Hardware Guide
See Also

Grounding the MX240 Router

196
7/16-in. (11 mm) hexagonal-head external drive socket wrench, or nut driver, with a
torque range between 23 lb-in. (2.6 Nm) and 25 lb-in. (2.8 Nm), for tightening nuts to
terminal studs on each power supply on a DC-powered router.
Wire cutters
Electrostatic discharge (ESD) grounding wrist strap
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. Use an
appropriately-sized driver or socket wrench, with a maximum torque capacity
of 50 lb-in. or less. Ensure that the driver is undamaged and properly
calibrated and that you have been trained in its use. You may wish to use a
driver that is designed to prevent overtorque when the preset torque level is
achieved.
Preventing Electrostatic Discharge Damage to an MX240 Router on page 380
MX240 Chassis Grounding Specifications on page 53
You ground the router by connecting a grounding cable to earth ground and then attaching
it to the chassis grounding points using UNC 1/4-20 two screws. You must provide the
grounding cables (the cable lugs are supplied with the router).
Verify that a licensed electrician has attached the cable lug provided with the router
1.
to the grounding cable.
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect
2.
the strap to an approved site ESD grounding point. See the instructions for your site.
Ensure that all grounding surfaces are clean and brought to a bright finish before
3.
grounding connections are made.
Connect the grounding cable to a proper earth ground.
4.
Detach the ESD grounding strap from the site ESD grounding point.
5.
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect
6.
the strap to one of the ESD points on the chassis.
Place the grounding cable lug over the grounding points on the upper rear of the
7.
chassis. The bolts are sized for UNC 1/4-20 bolts.
Copyright © 2019, Juniper Networks, Inc.