FWR/FWT 10
Page
15
Temtrol, Inc
.
®
Manufacturers of ….. Customized Air Handling Units
(F1) MAINTENANCE (Con’t – If Applicable)
Fan Wheel/Motor replacement (Continue)
(7) After all (4) hex nuts/bolts have been removed, slide the
motor support platform out a few inches away from inlet
wall so that the motor lifting eye is clear of the fan
cartridge framing.
(8) Remove fan wheel / motor assembly from fan cartridge.
(9) Loosen and remove all (4) hex nuts/bolts that retain the
motor to motor support platform. Be careful not to loose
the EAR pads (rubber blue bushings, if applicable).
(Figure 9.1 or Figure 9.2)
(10) Lift and remove the wheel / motor assembly from
the motor support platform.
(11)
To remove the fan wheel from motor shaft, remove
trans-torque bushing retaining hex nut. Be sure to
measure and/or mark location of Trans-torque bushing
nut on fan shaft.
(Figure 10)
Loosen progressively until bushing
is free from wheel hub and motor shaft.
(12)
Remove fan wheel / hub assembly from motor
shaft. Trans-torque bushing:
Loosen = Turn counter clockwise
Tighten = Turn clockwise
When reinstalling trans-torque bushing to hub, making
sure that the Trans-torque bushing nut is flush to the
fan wheel hub, tighten the bushing retaining hex nut
progressively and torque down per bushing
specifications (75 foot lb).
(13) To install fan wheel / motor assembly into fan
cartridge, reverse the steps above.
IMPORTANT: Before Restarting –
see next page
Fan Cartridge
Framing
Motor Support Platform
Wheel Hub
Trans-Torque
Bushing
Motor Support Platform
Motor Retaining Bolts
EAR Pads
FWR
FWT
FIGURE 9.1 if applicable
FIGURE 10
FIGURE 9.2 if applicable
Motor Retaining Bolts
!
Motor Support Platform
Trans-Torque
Bushing Nut Flush to
Fan Wheel Hub
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