Berner AI10 Руководство по установке и обслуживанию - Страница 9

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A. REPLACING FANS AND/OR MOTORS
CAUTION: ELECTRIC SHOCK HAZARD Disconnect power
whenever servicing unit. More than one disconnect may be
required to de-energize unit.
AI08: To replace fans and/or motors. See Figure 11
1.
Lock out power from the unit.
2.
Swing down the bottom access cover (BAC) by removing
the flush screws across the front bottom of the unit
3.
Disconnect the motor wiring harness.
4.
Using a 1/8" hex driver, loosen the set screws (one on each
fan) that secure the fan hubs to the motor shafts.
5.
Loosen, but do not remove the screw on each fan bearing
retainer and rotate up to fully expose the fan bearing.
6.
Slide each fan in towards the motor as far as possible.
7.
While supporting the motor with one hand, remove the
screws at the top of the motor mount. This will free the
motor/fan assembly.
8.
Lower the motor/fan assembly out of the unit. Ensure the
rubber bearing cushions come out with the fan bearings.
9.
Replace in reverse order. Note that when reinserting the
fan bearings, ensure the rubber bearing cushion is properly
seated. Improper seating can result in fan failure.
AI10: To replace fans and/or motors. See Figure 12
1.
Lock out power from the unit.
2.
Swing down the bottom access cover (BAC) by removing
the flush screws across the front bottom of the unit.
3.
Disconnect the motor wiring harness.
4.
If the module has electric heaters, mark the electrical
connections and disconnect them. Remove the heaters
by unscrewing their mounting brackets from the fan
housings. When reinstalling the heaters, take care to not
over torque these fasteners.
5.
Support the blower module by holding the motor.
Removing the (2) #12 hex head screws that secure the
blower module to the top channel with a 5/16" socket. This
operation may be easier with two people; one to support
the blower module and one to remove the screws.
6.
Lower the blower module onto a workbench.
7.
Using a 5/32" hex driver, loosen the set screws (one on
each fan) that secure the fan hubs to the motor shafts.
8.
Remove the screws on the back of the blower plate that
secure the fan housings to the blower plate.
9.
Slide the fan impellers and housings off of the motor shaft.
10. Detach the motor ground wire from the motor mount.
11. Remove the clips that hold the motor to the motor mount.
12. Replace in reverse order.
Figure 11 - Architectural Icon 08 (AI08) –
Replacing Fans /Motors
Figure 12 - Architectural Icon 10 (AI10) –
Replacing Fans /Motors
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