Trane IntelliPak Installation, Operation And Maintenance Manual page 180

Maintenance
Important: DO NOT use any detergents with
microchannel condenser coils. Pressurized
water or air ONLY.
For evaporator and reheat coil cleaners, contact the local
Trane Parts Center for appropriate detergents.
1. Remove enough panels from the unit to gain safe
access to coils.
WARNING
No Step Surface!
Do not walk on the sheet metal base. Walking on the
base could cause the supporting metal to collapse,
resulting in the operator/technician to fall. Failure to
follow this recommendation could result in death or
serious injury.
Important: Bridging between the main supports
required before attempting to enter into the
unit. Bridging may consist of multiple 2 by
12 boards or sheet metal grating.
2. Straighten any bent coil fins with a fin comb.
3. For accessible areas, remove loose dirt and debris
from both sides of the coil. For dual row microchannel
condenser coil applications, seek pressure coil wand
extension through the localTrane Parts Center.
4. When cleaning evaporator and reheat coils, mix the
detergent with water according to the manufacturer's
instructions. If desired, heat the solution to 150° F
maximum to improve its cleansing capability.
Important: DO NOT use any detergents with
microchannel coils. Pressurized water or air
ONLY.
5. Pour the cleaning solution into the sprayer. If a high-
pressure sprayer is used:
a. The minimum nozzle spray angle is 15 degrees.
b. Do not allow sprayer pressure to exceed 600 psi.
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
coil for five minutes.
7. Rinse both sides of the coil with cool, clean water.
8. Inspect both sides of the coil; if it still appears to be
dirty, repeat Steps 6 and 7.
9. Reinstall all of the components and panels removed in
Step 1; then restore power to the unit.
180
10. For evaporator and reheat coils, use a fin comb to
straighten any coil fins which were inadvertently bent
during the cleaning process.
Microchannel Condenser Coil Repair and
Replacement
If microchannel condenser coil repair or replacement is
required, seek HVAC Knowledge Center information or
Service Guide document RT-SVB83*-EN for further details.
Steam or Hot Water Coils
To clean a steam or hot water coil, use a soft brush, a
steam-cleaning machine, and water.
WARNING
Hazardous Voltage!
Disconnect all electric power, including remote
disconnects before servicing. Follow proper lockout/
tagout procedures to ensure the power can not be
inadvertently energized. Failure to disconnect power
before servicing could result in death or serious injury.
1. Verify that switches 1S1 and 1S70 are turned "OFF" , and
that the main unit disconnect is locked open.
2. Remove enough panels and components from the unit
to gain sufficient access to the coil.
3. Straighten any bent coil fins with a fin comb. (Use the
data in Table 71, p. 170
comb size.)
4. Remove loose dirt and debris from both sides of the
coil with a soft brush.
5. Use the steam-cleaning machine to clean the leaving-
air side of the coil first; start at the top of the coil and
work downward; then clean the entering-air side of the
coil, starting at the top of the coil and working
downward.
6. Check both sides of the coil; if it still appears dirty,
repeat Step 5.
7. Reinstall all of the components and panels removed in
Step 2; then restore power to the unit.
Evaporative Condenser Coil
Sump Water Management
Water Supply
Overall performance of any water- cooled device can be
affected by suspended particulates, mineral
concentration, trash and debris resulting in clogging and
heat transfer loss.The unit is designed to greatly minimize
problems with these impurities, however, float valves and
solenoid valves are used to control the incoming water.
If the incoming water contains contaminants, sand or
other objects, it is best to insert an incoming line strainer
having a mesh of 80 to 100.The inlet line should be flushed
to determine the appropriate fin
RT-SVX36K-EN