Inspecting And Cleaning The Fan; Supply Fan; Fan Drive - Trane Technologies IntelliPak Signature SCWF Installation, Operation And Maintenance Manual

Maintenance
6. Immediately rinse the drain pan thoroughly with fresh
water to prevent potential corrosion from the cleaning
solution.
7. Allow the unit to dry thoroughly before putting the
system back into service.
8. Properly dispose of all contaminated materials and
cleaning solution.

Inspecting and Cleaning the Fan

WARNING
Hazardous Voltage w/Capacitors!
Failure to disconnect power and discharge capacitors
before servicing could result in death or serious
injury.
Disconnect all electric power, including remote
disconnects and discharge all motor start/run
capacitors before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized. For variable frequency drives
or other energy storing components provided by
Trane or others, refer to the appropriate
manufacturer's literature for allowable waiting periods
for discharge of capacitors. Verify with a CAT III or IV
voltmeter rated per NFPA 70E that all capacitors have
discharged.
Inspect the fan section every six months or more frequently
if operating experience dictates. Clean accumulated dirt
and organic matter on the fan interior surfaces using the
following procedure:
1. Disconnect all electrical power to the unit.
2. Wear the appropriate personal protective equipment
(PPE).
3. Use a portable vacuum with HEPA filtration to remove
the loose dirt and organic matter. The filter should be
99.97% efficient at 0.3 micron particle size.
4. Thoroughly clean the fan and associated components
with an industrial cleaning solution. Carefully follow the
cleaning solution manufacturer's instructions regarding
personal protection and ventilation when using their
product.
5. Rinse the affected surfaces thoroughly with fresh water
and a fresh sponge to prevent potential corrosion of
metal surfaces.
6. Allow the unit to dry completely before putting it back
into service.
7. Properly dispose of all contaminated materials and
cleaning solution.

Supply Fan

Important: On units ordered with a Design Special of Inlet
Guide Vanes, refer to non-current IOM (SCXF-
SVX01D-EN) dated on or before March 2008
for maintenance procedure.
78

Fan Drive

WARNING
Hazardous Voltage w/Capacitors!
Failure to disconnect power and discharge capacitors
before servicing could result in death or serious
injury.
Disconnect all electric power, including remote
disconnects and discharge all motor start/run
capacitors before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized. For variable frequency drives
or other energy storing components provided by
Trane or others, refer to the appropriate
manufacturer's literature for allowable waiting periods
for discharge of capacitors. Verify with a CAT III or IV
voltmeter rated per NFPA 70E that all capacitors have
discharged.
Perform the following procedures according to the
"Maintenance Periodic Check List":
1. Rotate the fan wheel to ensure it turns freely in the
proper direction and is not rubbing on the fan housing
or inlet. If necessary, center the fan wheel again.
2. Check the position of both shafts. Fan and motor shafts
should operate parallel to each other for maximum belt
and bearing life. Shim as necessary under the motor or
fan bearings to obtain proper alignment.
3. Check the fan motor sheave alignment with straight
edge or a tightly pulled string. For sheaves of different
widths, place a string in the center groove of each
sheave and pull it tight for a center line. See
p. 80 for recommended torques.
4. Once the sheaves are properly aligned, tighten sheave
set screws to proper torque.
5. Check belt tension. Refer to the "Measuring Belt
Tension" section.
6. If required, adjust belt to the minimum recommended
tension. Refer to "Adjusting Belt Tension" section.
7. Re-tighten bearing set screws to the proper torques
after aligning the sheaves. See for proper torques.
8. Check the fan bearing locking collars for tightness on
the shaft. To tighten the locking collar, loosen the set
screw and slide the collar into its proper position over
the extended end of the inner case. Tighten the set
screw to the torque value in .
9. During air balancing, verify the sheave alignment, belt
tension, and that the shaft is parallel.
Figure 42,
SCXF-SVX01T-EN