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Trane SFHJ090-162 - Page 157

Trane SFHJ090-162
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Unit Startup
RT-SVX24J-EN 157
periodic adjustment is required. Inspect the belt annually
for proper tracking and tension. A properly tensioned belt
will turn the wheel immediately, with no visible slippage,
when power is applied.
1. Disconnect all electrical power.
2. Confirm the model number on the belt replacement kit
matches the model number on the label by the motor
pulley. Remove all remnants of the old belt.
3. Uncoil the belt as necessary.The belt must not twist
when being feed around the
wheel rim.
4. At a location near the motor pulley, tape the hook end
of the belt to the
wheel rim, see Figure 110, p. 157 and
Figure 107, p. 154.The tape should cover the hook and
belt.
5. Manually rotate the wheel clockwise while feeding the
belt onto the wheel rim,
taking care that the belt does
not twist.
Note: If for any reason the belt were to become flipped or
twisted 90° in either
direction, belt failure will be
imminent.
6. Upon feeding the belt completely through, remove the
tape and join the link
with the belt positioned around
the wheel rim, see Figure 110, p. 157. Keep light
tension on the belt, as a slack belt may be prone to
twist.
7. Manually rotate the wheel clockwise until the linked
belt
ends are approximately
180° from the motor
pulley location.
8. Insert the right angle belt retainer from the
replacement kit at the pulley
location. Place it between
the segment retainer latch pivot point and the wheel
spoke, see Figure 111 , p . 158 (left of the spoke).
Important: To avoid release
of the segment latch do not
insert retainer on the other side of spoke.
9. Manually rotate the wheel counter-clockwise to
position the belt retainer clip
close to the center beam
and diameter seals.
10. In a section between the retainer clip and the motor
pulley, remove the
belt from the wheel rim and then
place it over the pulley.
11. Manually rotate the wheel clockwise until the belt is
fully stretched around the
wheel rim and motor pulley.
12. Remove the belt retainer clip and manually rotate the
wheel clockwise at least
two full rotations while
verifying the belt is not twisted on the wheel rim or as
it enters the pulley(s).
WARNING
Hazardous Voltage!
Disconnect all electric power, including remote
disconnects before servicing. Follow proper lockout/
tagout procedures to ensure the power can not be
inadvertently energized. Do not open the service access
doors while the unit is operating. Failure to disconnect
power before servicing could result in death or serious
injury.
CAUTION
Added Support Required!
Before laying across the energy wheel, place a rigid
board across the span of the energy wheel cassette.
Failure to do so could result in personal injury and/or
damage to the energy wheel.
Figure 109. Link belt installation
Figure 110. Link belt installation

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