RT-SVX34R-EN
121
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sskkiinn.. AALLWWAAYYSS wweeaarr PPeerrssoonnaall PPrrootteeccttiivvee
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Refrigerant Coils
To clean refrigerant coils, use a soft brush and a
sprayer.
IImmppoorrttaanntt:: 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.
a. For the 50 ton unit with the 3rd coil closest to
the bulk-head, safe access can be gained by
removal of the unit side panels.
b. For the 40 ton and 50 ton units, access to the 2-
row microchannel condenser coils removal of
the corner posts will be necessary.
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iinn ddeeaatthh oorr sseerriioouuss iinnjjuurryy..
DDoo nnoott wwaallkk oonn tthhee sshheeeett mmeettaall ddrraaiinn ppaann..
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NNoottee:: Before attempting to enter the unit,
bridge between the main supports.
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 local
Trane 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.
IImmppoorrttaanntt:: 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.
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, refer to General Service Bulletin RT-SVB83*-
EN for further details.
Final Process
Record the unit data in the blanks provided.
MMaaiinntteennaannccee
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