Grain Systems PNEG-010 - Manual (Page 22)

22 PNEG-010 Vane Axial Fan
7. Fan Service
Fan Blade Inspection and Maintenance
Pre-season inspections should be done on the fan blade to look for the following:
1. Any debris (stalks, bees wings, mud, insects and insect nests) accumulated on the surfaces of the
fan blade. Remove these items as they will likely disrupt airflow over the fan airfoils and can
potentially cause vibration problems.
2. Inspect the fan blade for any broken, cracked or loose parts. Blade should NOT be operated with
broken or loose parts. Contact dealer for determination of the repairs required.
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, venturi and blade 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 re-assembly.
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 re-assembly.
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 re-install motor, slide onto motor base plate and replace shims (if required) between motor and
base plate. Re-install motor mount bolts and washers and fully tighten them at this time. Re-install
conduit and wires and carefully remake all electrical wiring connections.
NOTE: Make sure to install and tighten the blade in accordance with earlier instructions.
Bushing Size Hex Bolt Size Torque (inch. lbs.)
H 1/4"-20 x 3/4" 95
P 5/16"-18 x 1" 192
WARNING
Do not attempt to pull the flange of the bushing flush with the blade hub.
A clearance of 1/8'' to 1/4'' must be maintained between bushing flange and
blade hub surface. Blade will loosen and cause damage or injury.