Energy Wheel Seal Adjustment; Inspecting And Cleaning Fans; Energy Wheel Drive Motor And Pulley Replacement - Trane CSAA Installation, Operation And Maintenance Manual

Routine Maintenance
9. Reverse the removal procedure to re-install. Check to
ensure that the wheel remains in the center of the seal
plate opening.

Energy Wheel Seal Adjustment

1. Loosen the diameter seal adjustment screws and back
the seals away from the wheel surface (see
Figure 204. To adjust seal, loosen screws, back seals
away from wheel surface. Seal seen from
bottom section.
To remove
Diameter seal
adjusting screws
1. Rotate the wheel clockwise until two opposing spokes
are hidden behind the bearing support beam.
2. Using a folded piece of paper as a feeler gauge,
position the paper between the wheel surface and the
diameter seals.
3. Adjust the seals toward the wheel surface until slight
friction on the paper feeler gauge is felt when the
gauge is moved along the length of the spoke.
4. Check the adjustment through a full rotation of the
wheel.
5. Retighten the adjusting screws and recheck the
clearance with the paper feeler gauge.
Energy Wheel Drive Motor and Pulley
Replacement
WARNING
Hazardous Voltage!
Failure to disconnect power before servicing could
result in death or serious injury. Disconnect all electric
power, including remote disconnects before servicing.
Follow proper lockout/tagout procedures to ensure the
power can not be inadvertently energized.
160
Figure 204).
Rotation
To adjust
Feeler gauge
1. Disconnect all electrical power.
2. Remove the belt from the pulley and temporarily
position it around the wheel rim.
3. Measure and record the distance from the inner edge
of the pulley to the mounting wall.
4. Loosen the set screw in the wheel drive pulley using an
Allen wrench and remove the pulley from the motor
drive shaft.
5. While supporting the weight of the drive motor in one
hand, loosen and remove the four mounting bolts.
6. Install a replacement motor with the hardware kit
supplied.
7. Install the pulley and adjust it to the distance recorded
in the previous step.
8. Tighten the set screw to the drive shaft.
9. Stretch the belt over the pulley and engage it in the
groove.
Fans
WARNING
Rotating Components!
Failure to secure rotor or disconnect power before
servicing could result in rotating components cutting
and slashing technician which could result in death or
serious injury. The following procedure involves
working with rotating components. Disconnect all
electric power, including remote disconnects before
servicing. Follow proper lockout/ tagout procedures to
ensure the power can not be inadvertently energized.
Secure rotor to ensure rotor cannot freewheel.

Inspecting and Cleaning Fans

Fan sections of air handlers should be inspected every six
months at a minimum or more frequently if operating
experience dictates. If evidence of microbial growth
(mold) is found, identify and remedy the cause
immediately. Refer to "Troubleshooting," p. 165
possible causes and solutions. To clean the fan section:
1. Disconnect all electrical power to the unit.
2. Wearing the appropriate personal protective
equipment, remove any contamination.
3. Vacuum the section with a vacuum device that uses
high-efficiency particulate arrestance (HEPA) filters
with a minimum efficiency of 99.97 percent at
0.3 micron particle size.
4. Thoroughly clean any contaminated area(s) with a
mild bleach and water solution or an EPA-approved
sanitizer specifically designed for HVAC use.
5. Immediately rinse the affected surfaces thoroughly
with fresh water and a fresh sponge to prevent
potential corrosion of metal surfaces.
for
CLCH-SVX07K-EN