Installing the M120 Router Using a Mechanical Lift

Because of the router's size and weight—up to 225 lb (102.1 kg) depending on the configuration—we strongly recommend you install the router using a mechanical lift. If you do not use a lift to install the router, refer to Installing the M120 Router Without Using a Mechanical Lift for complete instructions to safely install the router.

Before installing the router:

1. Read the safety information in M120 Chassis Lifting Guidelines.
2. Prepare your site and review the guidelines in M120 Site Preparation Checklist.
3. Remove the router from the shipping container as described in Unpacking the M120 Router.
4. Install the mounting hardware as described in Installing the Mounting Hardware for a Front-Mount Four-Post Rack or Cabinet, Installing the Mounting Hardware for a Front-Mount Open-Frame Rack, or Installing the Mounting Hardware for a Center-Mount Open-Frame Rack.

Caution: Before front mounting the router in a rack, have a qualified technician verify that the rack is strong enough to support the router's weight and is adequately supported at the installation site.

To install the router using a lift (see Figure 1):

1. Ensure that the rack is in its permanent location and is secured to the building. Ensure that the installation site allows adequate clearance for both airflow and maintenance. For details, see M120 Clearance Requirements for Airflow and Hardware Maintenance.
2. Load the router onto the lift, making sure it rests securely on the lift platform.
3. Using the lift, position the router in front of the rack or cabinet, centering it in front of the mounting shelves.
4. Lift the chassis approximately 0.75 in. above the surface of the mounting shelves and position it as close as possible to the shelves.
5. Carefully slide the router onto the mounting shelves so that the bottom of the chassis and the mounting shelves overlap by approximately two inches.
6. Slide the router onto the mounting shelves until the mounting brackets or front-mounting flanges contact the rack rails or spacer bars (depending on your type of installation). The shelves ensure that the holes in the mounting brackets and the front-mounting flanges of the chassis align with the holes in the rack rails.
7. Move the lift away from the rack.
8. If you are installing the router in a four-post rack or cabinet, install a mounting screw into each of the holes aligned with the threaded holes in the spacer bars. If you are installing the router in an open-frame rack, install a mounting screw into each of the open mounting holes aligned with the rack, starting from the bottom.
9. Visually inspect the alignment of the router. If the router is installed properly in the rack, all the mounting screws on one side of the rack should be aligned with the mounting screws on the opposite side and the router should be level.

Figure 1: Installing the M120 Router in the Rack

Note: This illustration depicts the router being installed in an open-frame rack. For an illustration of the mounting hardware required for a four-post rack or cabinet, see Installing the Mounting Hardware for a Four-Post Rack or Cabinet.