Trane INTELLIPAK ™ ™ ™ ™ ™ Commercial Single-Zone Rooftop Air Conditioners with CV or VAV Control - Manual (Page 109)

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Service & Maintenance (Continued) (q) Press the Up Arrow button to scroll to the Active
Setup menu.
(r) Press the Change Data button.
(s) Press the Up Arrow button to scroll to the Setup 1
setting.
(t) Press the OK button.
(v) Press the Change Data button.
(w) Press the Up Arrow button to scroll to the Down
load All Parameters setting.
(x) Press the OK button
Note: Item 5 resets the drive to the default factory
settings. The program parameters listed in Table 5-
8 will need to be verified or changed as described in
Item 3 and 4.
Note: Some of the parameters listed in the Table are
motor specific. Due to various motors and
efficiencies available, use only the values stamped
on the specific motor nameplate. Do not use the
Unit nameplate values.
6. Follow the start-up procedures for supply fan in the "Vari
able Air Volume System" section or the "Exhaust Airflow
Measurement" start-up procedures for the exhaust fan.
7. After verifying that the VFD(s) are operating properly,
press the STOP key at the Human Interface Module to
stop the unit operation.
8. Follow the applicable steps in the "Final Unit Checkout"
section to return the unit to its normal operating mode.
Monthly Maintenance
Before completing the following checks, turn the unit OFF
and lock the main power disconnect switch open.
WARNING
Hazardous Voltage!
Disconnect all electric power, including remote discon-
nects before servicing. Follow proper lockout/tagout
procedures to ensure the power can not be inadvert-
ently energized. Failure to disconnect power before ser-
vicing could result in death or serious injury.
Filters
[ ] Inspect the return air filters. Clean or replace them if nec-
essary. Refer to the Table 5-4 for filter information.
Cooling Season
[ ] Check the unit’s drain pans and condensate piping to
ensure that there are no blockages.
[ ] Inspect the evaporator and condenser coils for dirt, bent
fins, etc. If the coils appear dirty, clean them according to
the instructions described in “Coil Cleaning” later in this
section.
[ ] Manually rotate the condenser fans to ensure free move-
ment and check motor bearings for wear. Verify that all of
the fan mounting hardware is tight.
[ ] Inspect the F/A-R/A damper hinges and pins to ensure
that all moving parts are securely mounted. Keep the
blades clean as necessary.
[ ] Verify that all damper linkages move freely; lubricate with
white grease, if necessary.
[ ] Check supply fan motor bearings; repair or replace the
motor as necessary.
[ ] Check the fan shaft bearings for wear. Replace the bear-
ings as necessary.
[ ] Lubricate the supply fan bearings with a lithium based
grease. Refer to Table 5-6 for recommended greases.
Note: The bearings are manufactured using a
special synthetic lithium based grease designed for
long life and minimum lube intervals. Over
lubrication can be just as harmful as not enough.
Use a hand grease gun to lubricate these bearings; add
grease until a light bead appears all around the seal. Do not
over lubricate!
After greasing the bearings, check the setscrews to ensure
that the shaft is held securely to the bearings and fan
wheels. Make sure that all bearing supports are tight.
[ ] Check the supply fan belt(s). If the belts are frayed or
worn, replace them. Refer to the "Fan Belt Adjustment"
section for belt replacement and adjustments.