7
CAUTION: Do not attempt to pull the flange of the
bushing flush with the wheel hub. A clearance of from
1/8" to 1/4" must be maintained between bushing
flange and wheel hub surface.
8. Turn wheel by hand and check it for freedom of rotation
and uniform clearance around inlet cone before rein-
stalling the fan guard.
FAN MOTOR REMOVAL & 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 fail-
ure because of external causes will result in a charge
to the owner for repair.
1. Make certain power is shut off and locked out, 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 mount and replace
shims (if required) between motor and mount.
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.
W I R I N G D I A G R A M S
Fig. 1 - Fan control box wiring diagram, 230V 1 phase