Carrier 40UV Installation And Service Instructions Manual page 40

Damper Section Removal and Reinstallation
(Fig. 18)
Lock out and tag all power supplies to equipment and con-
l_ols prior to servicing unit. Follow all safety codes. Failure
to do so could result in personal injury.
The assembly order of the beating installation is critical. Be
careful with all components during removal and installa-
tion. Any excessive force apphed to these components can
cause unintended damage and void unit warranty.
To remove damper section:
1. Turn off all power to unit.
I IMPORTANT: Tag each right front panel (40UV) or
middle bottom panel (40UH) for each unit. Panels have
electrical information specific to each uniL
2. Use 513zin. hex (Allen) tool or 3/8in. nut driver to remove
front (40UV) or bottum (40UH) panels and fight end
panels.
3. Remove four carriage bolts and nuts secunng kickplate to
end frames.
IMPORTANT: Tag kickplate for each unit_ Kickplate
has electrical information specific to each unit.
4. Remove the two 1/4in. head screws securing kickplate to
the damper sides (one on each side) and remove
kickplate.
5. Remove 1/4 in. head screws attaching outside air (OA)
actuator to damper shaft or attaching locking quadrant as-
sembly to damper shaft. Remove OA actuator or locking
quadrant assembly.
6. Remove six t/4 in. head screws (3 per side) securing
damper to 40UH unit rear panel.
7. Remove two 5/16in. nuts attaching damper assembly to
back frame.
8. Remove damper assembly from unit.
To replace damper section:
1. Replace damper assembly into unit.
2. Replace 5/16in. nuts attaching damper assembly to back
frame.
3. Replace six V4 in. head screws (3 per side) securing
damper to 40UH unit rear panel.
4. Replace 1/4 in. head screws attaching OA actuator to
damper shaft OR attaching locking quadrant assembly to
damper shaft. Replace OA actuator or locking quadrant
assembly.
5. Replace the two lh in. head screws securing kickplate
to the damper sides (one on each side) and remove
kickplate.
6. Replace four carriage bolts and nuts securing kickplate to
end frames.
7.
Reinstall front (40UY) or bottom (40UH) panels. Rein-
stall end panels. Ensure that tag on each right front
panel (40UV) or middle bottom panel (40UH) match-
es unit tag.
8. Restore power to the unit.
40