Installing the M120 Router Without Using a Mechanical Lift

If you cannot use a mechanical lift to install the router (the preferred method), you can install it manually.

Before installing the router manually:

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.
5. Remove components from the chassis.

To install the router in the rack (see Figure 1):

Caution: If you are installing two or three routers in one rack, install the lowest one first. Installing a router in the upper position in a rack or cabinet requires a lift.

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.

Caution: Lifting the chassis and mounting it in a rack requires three people. The empty chassis weighs approximately 110 lb (49 kg).

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. Position the router in front of the rack or cabinet, centering it in front of the mounting shelves. Use a pallet jack if one is available.
3. With one person on each side and one person in the front, hold onto the bottom of the chassis and carefully lift it onto the large and small (if installed) mounting shelves.

   Warning: To prevent injury, keep your back straight and lift with your legs, not your back. Avoid twisting your body as you lift. Balance the load evenly and be sure that your footing is solid.

4. 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.
5. 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.
6. 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.