Grain Systems PNEG-163-08 - Manual (Page 29)

6. User Servicing Instructions and Troubleshooting
PNEG-163-08 Centrifugal Fan 29
Taper-Lock Bushing Torque Requirements
Browning Taper-Lock Bushing Bolt Tightening Torque
Fan Motor Removal and Installation
In the event of motor failure, remove the motor, as described and take it to the nearest authorized service
station. AUTHORIZED SERVICE STATIONS ARE THE ONLY PLACES THAT CAN PROVIDE MOTOR
WARRANTY. Motor service and repair at other places will be at owner’s expense. If service station
determines motor failure to be caused by faulty material or workmanship, repair will be under warranty
when within the warranty period. Motor failure because of external causes will result in a charge to the
owner for repair.
1. LOCK OUT THE MAIN POWER SUPPLY, then remove fan guard, inlet cone and wheel as
outlined earlier.
2. Open motor junction box cover and disconnect the motor lead wires from within the box.
NOTE: Tag, or otherwise identify wires for ease of reassembly.
3. Remove motor mount bolts. If there are any shims between the motor and its base, note their
locations so they can be properly installed during reassembly.
4. Disconnect the motor end of the motor conduit, if required, then carefully pull conduit and wires
through hole in the motor junction box. Remove motor. If motor requires service, take it to an
authorized service station.
5. To reinstall motor, slide onto motor base plate and replace shims (if required) between motor and
base plate. Reinstall motor mount bolts and washers and fully tighten them at this time. Reinstall
conduit and wires and carefully remake all electrical wiring connections.
NOTE: Make sure to install and tighten the wheel in accordance with earlier instructions.
General Inspection
Inspect the motor at regular intervals, approximately every 500 hours of operation or every 3 months,
whichever occurs first. Keep the motor clean and the ventilation openings clear. The following steps
should be performed at each inspection:
1. Check that the motor is clean. Check that the interior and exterior of the motor is free of dirt,
oil, grease, water, etc. Oily vapor, paper pulp, textile lint, etc., can accumulate and block motor
ventilation. If the motor is not properly ventilated, over heating can occur and cause early
motor failure.
2. Check all electrical connectors to be sure that they are tight.
Bushing Size Hex Bolt Size Torque (inch-lbs)
P 5/16"-18 x 1-1/4" 192
Q 3/8"-16 x 1-1/2" 348
DANGER
Do not touch electrical connections before you first ensure that power has been
disconnected. Electrical shock can cause serious or fatal injury. Only qualified
personnel should attempt the installation, operation and maintenance of
this equipment.