Installing An Mx2020 Fan Tray - Juniper MX2020 Hardware Manual

MX2020 3D Universal Edge Router Hardware Guide

Installing an MX2020 Fan Tray

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This topic describes how to install the upper or lower fan trays in a MX2010. This procedure
applies to both the standard fan tray and the optimized power fan tray.To install the
upper or lower fan tray (see
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect
1.
the strap to one of the ESD points on the chassis.
Reposition the DC cable manager, if necessary, before installing the upper or lower
2.
fan tray:
Unwrap any cables on the DC cable manager and remove the cables from the tray.
Arrange the cables so that they do not block the front of the cable manager, and
tray and secure them with temporary fasteners so that they are not supporting their
own weight as they hang from the connector.
Loosen the two captive screws on the access panel and then swing the panel open.
3.
Remove the fan tray from the antistatic mat or ESD bag.
4.
Grasp the fan tray by the handle, and place one hand under the fan tray for support.
5.
Insert the fan tray partially into the chassis while pressing the latch.
NOTE: When inserting the fan tray observe the correct orientation by the
"this side up" label on the fan tray.
Press and hold the latch again while carefully pushing the fan tray into the chassis.
6.
NOTE: The fan tray has a double locking safety mechanism that allows
you to safely install the fan tray in a two-stage process.
Tighten the two captive screws on the fan tray faceplate. Apply between 10 lb-in.
7.
(1.13 Nm) to 12 lb-in. (1.35 Nm) of torque to each screw. Do not overtighten the screws.
Close the access panel and secure the two captive screws on either side of the access
8.
panel. Apply between 10 lb-in. (1.13 Nm) to 12 lb-in. (1.35 Nm) of torque to each screw.
Do not overtighten the screws.
Reinstall the DC cable manager back into position, if necessary.
9.
Figure 159 on page 313 and Figure 160 on page 313):
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