Repair 7-19Part 106913ā04 2018 Nordson CorporationMotor ReplacementWARNING: Before performing the following procedures, shut off electricalpower at the system electrical panel. Lock and tag the disconnect switch.Motor Removal1. See Figure 7-9. Remove the cover from the junction box (1). Tag anddisconnect the wiring from the motor leads. Disconnect the conduit (2)from the junction box.2. Remove the V-belts, as described in the V-Belt Replacement procedure,from the motor sheave.3. Remove the nuts and washers (3) securing the motor to the mountingplate.4. Remove the motor from the compartment and move it to a clean workarea.5. Remove the motor sheave and bushing from the motor as described inthe Sheave Replacement procedure.Motor Installation1. Install the new motor on the mounting plate with the nuts and washers.Do not tighten the nuts until you install and tension the V-belts.2. Install the motor sheave and bushing on the motor shaft as described inthe Sheave Replacement procedure.3. Install the V-belts on the sheave and adjust the belt tension as describedin the V-Belt Replacement procedure.4. Connect the conduit to the motor junction box and the wiring to themotor leads. Install the cover.5. Turn on the system electrical power and start the exhaust fan. Checkthe direction of air flow through the final filters. If air is being pulled intothe final filters, the motor is rotating in the wrong direction. Refer toReversing Motor Direction in the Troubleshooting section.
