Removing The Rear Lower Impeller Assembly; Removing The Fan Tray; Figure 47: Removing The M40E Rear Lower Impeller Assembly - Juniper M40E Hardware Manual

Removing the Rear Lower Impeller Assembly

Removing the Fan Tray

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The rear lower impeller assembly is located to the left of the circuit breaker box on the
rear of the chassis, as shown in "M40e Chassis Description" on page 8. The assembly
weighs approximately 5 lb (2.3 kg).
To remove the rear lower impeller assembly (see Figure 47 on page 91):
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. For more information about ESD,
see "Preventing Electrostatic Discharge Damage to an M Series, MX Series, or T Series
Router" on page 232.
Loosen the thumbscrew at each corner of the impeller cover, using a Phillips
2.
screwdriver if necessary.
Grasp the screws at opposite corners of the impeller cover and slide the assembly
3.
out of the chassis.

Figure 47: Removing the M40e Rear Lower Impeller Assembly

The fan tray is located behind the cable management system on the front of the chassis,
just above the air filter, as shown in "M40e Chassis Description" on page 8. The fan tray
contains four fans and weighs approximately 13 lb (5.9 kg).
To remove the fan tray (see Figure 48 on page 92):
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. For more information about ESD,
see "Preventing Electrostatic Discharge Damage to an M Series, MX Series, or T Series
Router" on page 232.
Loosen the thumbscrew at each end of the fan tray, using a Phillips screwdriver if
2.
necessary.
Grasp the sides of the fan tray and pull firmly to slide it out of the chassis.
3.
Chapter 9: Installing the M40e Router Without a Mechanical Lift
91