Vent Hood Installation

DANGER

Hazard of Electric Shock, Explosion, or Arc Flash Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, NOM-029-STPS-2011, or CSA Z462. This equipment must only be installed and serviced by qualified electrical personnel. Turn off all power supplying this equipment before working on or inside equipment. Always use a properly rated voltage sensing device to confirm power is off. Replace all devices, doors, and covers before turning on power to this equipment. Do not drill or cut in the top area of the motor control center. Avoid contaminating the motor control center with dust or debris. DO NOT lift the cabinet by the vent hood or by attaching lifting angles to the vent hood. Failure to follow these instructions will result in death or serious injury.

This section contains instructions for installing a vent hood over the top plate vents on an MCC.

1. Turn off all power supplying this equipment before working on or inside the equipment, and follow lockout/tagout procedures. Always use a properly rated voltage sensing device to confirm the power is off.

2. Remove the 3/8-in. (9.525 mm) bolts, washers, and the lifting angle (see Remove the Hardware).

   Remove the Hardware

   

3. Remove the two 10-32 screws that secure the vent hood and closing plate to the top of the cabinet (see Reposition and Attach the Vent Hood).

   Reposition and Attach the Vent Hood

   

4. Once the vent hood is removed, secure the top closing plate by reinstalling the 10-32 screws removed in Step 3 (see Reposition and Attach the Vent Hood).

5. Position the vent hood on the top of the cabinet as shown.

6. Secure the vent hood in place using the two 3/8-in. (9.525 mm) bolts and washers removed in Step 2. Torque the bolts to 28–33 lb-in (3.164–3.729 N•m).