M160 Internet Router Hardware Guide
is attached to a proper earth ground. For more information about ESD, see
“Preventing Electrostatic Discharge Damage” on page 226.
2.
Grasp the sides of the air filter and push it firmly into place over the air
intake vent.
3.
Tighten the thumbscrew at each corner of the air filter cover.
Figure 63: Installing the Air Filter
1218
Air filter
Air filter cover
Maintaining the Fan Tray and Impellers
The fan tray is attached to the back of the cable management system and
installs into the front of the chassis, as shown in Figure 1. There are also
three separate, non-interchangeable impeller assemblies. The front impeller
is located behind the craft interface (shown in Figure 1) and works together
with the fan tray to cool the FPCs and midplane. The upper and lower
impellers on the rear of the chassis (shown in Figure 2) work together to cool
the components that install into the rear of the chassis.
To check the status of the impellers and the fans in the fan tray, issue the
show chassis environment
command. The output includes an entry for each impeller
(which it refers to as a
Blower
) and for each fan in the fan tray:
user@host> show chassis environment
Class Item
Status
Measurement
...
Fans
Rear Bottom Blower
OK
Spinning at normal speed
Rear Top Blower
OK
Spinning at normal speed
Front Top Blower
OK
Spinning at normal speed
Fan Tray Rear Left
OK
Spinning at normal speed
Fan Tray Rear Right
OK
Spinning at normal speed
Fan Tray Front Left
OK
Spinning at normal speed
Fan Tray Front Right
OK
Spinning at normal speed
...
130
Maintaining Cooling System Components
Содержание Internet Router M160
Страница 12: ...M160 Internet Router Hardware Guide xii Table of Contents ...
Страница 16: ...M160 Internet Router Hardware Guide xvi List of Figures ...
Страница 18: ...M160 Internet Router Hardware Guide xviii List of Tables ...
Страница 24: ...M160 Internet Router Hardware Guide xxiv Requesting Support ...
Страница 26: ...2 Product Overview ...
Страница 30: ...M160 Internet Router Hardware Guide 6 Safety Requirements Warnings and Guidelines ...
Страница 66: ...M160 Internet Router Hardware Guide 42 Cable Management System ...
Страница 80: ...M160 Internet Router Hardware Guide 56 Routing Engine Architecture ...
Страница 82: ...58 Initial Installation ...
Страница 104: ...M160 Internet Router Hardware Guide 80 Unpacking the Router ...
Страница 148: ...M160 Internet Router Hardware Guide 124 Configuring the JUNOS Internet Software ...
Страница 150: ...126 Hardware Maintenance Replacement and Troubleshooting Procedures ...
Страница 242: ...M160 Internet Router Hardware Guide 218 Troubleshooting the Power System ...
Страница 244: ...220 Appendixes ...
Страница 292: ...M160 Internet Router Hardware Guide 268 Packing Components for Shipment ...
Страница 301: ...Part 5 Index Index 277 ...
Страница 302: ...278 Index ...