Trane Intellipak 2 Service Manual

Service and Maintenance
RT-SVX24K-EN181
Fan Belt Adjustment
The supply fan belts and optional exhaust fan belts must
be inspected periodically to assure proper unit operation.
Replacement is necessary if the belts appear frayed or
worn. Units with dual belts require a matched set of belts
to ensure equal belt length.
When removing or installing the new belts, do not stretch them over the sheaves. Loosen the belts using the belt
tension adjustment bolts on the motor mounting base.
Once the new belts are...

Service and Maintenance
182RT-SVX24K-EN
2. Set the large O-ring on the belt tension gauge at the
deflection value determined in Step 1b.
3. Set the small O-ring at zero on the force scale of the g
 auge plunger.
4. Place the large end of the gauge at the center of the belt span;
 then depress the gauge plunger until the large O-
ring is even with the top of the next belt—-or even with
a straightedge placed across the fan and motor
sheaves. See Table59, p. 183.
5. Remove the belt tension gauge. The small...

Service and Maintenance
RT-SVX24K-EN183
Scroll Compressor Replacement
The compressor manifold system was purposely designed
to provide proper oil return to each compressors. The
refrigerant manifold system must not be modified in any
way.
Note: Altering the compressor manifold piping may
cause oil return problems and compressor failure.
Should a compressor replacement become necessary and
a suction line filter drier is to be installed, install it a
minimum of 18 inches upstream of the oil separator tee....

Service and Maintenance
184RT-SVX24K-EN
VFD Programming Parameters
Units shipped with an optional variable frequency drive
(VFD) are preset and run tested at the factory. If a problem
with a VFD occurs, ensure that the programmed
parameters listed inTable 60, p. 185have been set before
replacing the drive.
Note: Check to make sure that parameter 1-23 is set to 60
Hz.To check parameter 1-23 press the [Main Menu]
button (press [Back] button if the main menu does
not display), use the [▼] button to scroll...

Service and Maintenance
RT-SVX24K-EN185
g. Ensure parameter 14-22 Operation Mode has
reverted back to “Normal Operation”.
Notes:
 Item 5 resets the drive to the default factory settings.
The program parameters listed in Table 60, p. 185will
need to be verified or changed as described in Item 3
and 4.
 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...

Service and Maintenance
186RT-SVX24K-EN
 [ ] 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 bearings
 as necessary.
 [ ] Lubricate the supply fan shaft bearings with a lithium based
 grease. Refer to Table57, p.181for
recommended greases.
Note: The
 bearings are manufactured using a special
synthetic lithium based grease designed...

Service and Maintenance
RT-SVX24K-EN187
 [ ] Open the main gas valve and apply power to the unit
heating section; then initiate a “Heat” test using the
startup procedure described in “Gas Furnace Startup”.
 [ ] Verify that the ignition system operates properly.
Air-Cooled Coil Cleaning
Regular coil maintenance, including annual cleaning
enhances the unit operating efficiency by minimizing:
– compressor head pressure and amperage draw;
– water carryover;
– fan brake horsepower; and,
– static pressure...

Service and Maintenance
188RT-SVX24K-EN
c. Spray the solution perpendicular (at 90 degrees) to
the coil face.
d. For evaporator and reheat coils, maintain a minimum clearance of 6 between the sprayer
nozzle and the coil. For microchannel condenser
coils, optimum clearance between the sprayer
nozzle and the microchannel coil is 1-3”.
6. Spray the leaving-airflow side of the coil first; then spray the opposite side of the coil. For evaporator and
reheat coils, allow the cleaning solution to stand on the...

Service and Maintenance
RT-SVX24K-EN189
different times of the year. The sump water clarity should
be checked periodically.
The evaporative condenser has several design features to reduce the possibility of biological growth in the sump.
These features include:
 air inlets constructed to eliminate direct sunlight in the sump
 The sump flush sequence replenishes the sump with fresh
 water 1 to 12 times per day depending on the
flush setting
 The copper tubing in the coils is a natural biocide
Important:...

Service and Maintenance
19 0RT-SVX24K-EN
Final Process
Record the unit data in the blanks provided.
Table 61. Evaporative Condenser Models—Maintenance and Troubleshooting
 Maintenance Schedule 
 Component   Action   Frequency   Comments 
Fan Motor  None Required    Non-grease bearings 
Sump Pump  Inspect / Clean   1 – 2 times per year Clean inlet openings to pump
Sump  Inspect / Clean  1 – 2 times per year depending 
on water hardness and unit run  time  Sump can be drained and hosed out using hose bib...