CAUJ-SVX01E-EN
53
Coil Cleaning
NNOOTTIICCEE
DDaammaaggiinngg CCooiill CClleeaanneerrss!!
CCooiill cclleeaanneerrss ccaann ddaammaaggee rrooooffss,, ssuurrrroouunnddiinngg
bbuuiillddiinnggss,, vveehhiicclleess,, eettcc..
CClleeaanniinngg ssuubbssttaanncceess sshhoouulldd bbee cchheecckkeedd ttoo eennssuurree
tthhaatt tthheeyy wwiillll nnoott ccaauussee ddaammaaggee ttoo ssuurrrroouunnddiinnggss..
CCooiillss aanndd rrooooff ((iiff aapppplliiccaabbllee)) sshhoouulldd bbee rriinnsseedd
tthhoorroouugghhllyy.. DDoo nnoott sspprraayy ccooiill cclleeaanneerrss iinn wwiinnddyy
ccoonnddiittiioonnss..
Regular coil maintenance, including annual cleaning,
enhances unit’s operating efficiency by minimizing:
• compressor head pressure and amperage draw;
• water carryover;
• fan brake horsepower; and,
• static pressure losses.
At least once each year—or more often if the unit is
located in a “dirty” environment—clean the
microchannel condenser using the instructions
outlined below. Be sure to follow these instructions as
closely as possible to avoid damaging the coils.
To clean refrigerant coils, use a soft brush and a
sprayer.
NNoottee:: DO NOT use any detergents with microchannel
condenser coils. Pressurized water or air ONLY.
1. Remove enough panels from the unit to gain safe
access to coils..
WWAARRNNIINNGG
NNoo SStteepp SSuurrffaaccee!!
FFaaiilluurree ttoo ffoollllooww iinnssttrruuccttiioonn bbeellooww ccoouulldd rreessuulltt iinn
ddeeaatthh oorr sseerriioouuss iinnjjuurryy..
DDoo nnoott wwaallkk oonn tthhee sshheeeett mmeettaall ddrraaiinn ppaann.. WWaallkkiinngg
oonn tthhee ddrraaiinn ppaann ccoouulldd ccaauussee tthhee ssuuppppoorrttiinngg mmeettaall
ttoo ccoollllaappssee aanndd rreessuulltt iinn tthhee ooppeerraattoorr//tteecchhnniicciiaann
ffaalllliinngg..
IIMMPPOORRTTAANNTT:: 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 local
Trane Parts Center.
NNoottee:: DO NOT use any detergents with
microchannel coils. Pressurized water or air
ONLY.
4. 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.
5. 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.
6. Rinse both sides of the coil with cool, clean water.
7. Inspect both sides of the coil; if it still appears to be
dirty, repeat Steps 6 and 7.
8. Reinstall all of the components and panels removed
in Step 1; then restore power to the unit.
Microchannel Condenser Coil Repair and
Replacement
If microchannel condenser coil repair or replacement is
required, see Service Guide document RT-SVB83*-EN
for further details.
Fall Restraint — Condenser Roof
WWAARRNNIINNGG
FFaalllliinngg OOffff EEqquuiippmmeenntt!!
FFaaiilluurree ttoo ffoollllooww iinnssttrruuccttiioonnss bbeellooww ccoouulldd rreessuulltt iinn
ddeeaatthh oorr sseerriioouuss iinnjjuurryy..
TThhiiss uunniitt iiss bbuuiilltt wwiitthh ffaallll rreessttrraaiinntt sslloottss llooccaatteedd oonn
uunniitt ttoopp tthhaatt MMUUSSTT bbee uusseedd dduurriinngg sseerrvviicciinngg..
TThheessee sslloottss aarree ttoo bbee uusseedd wwiitthh ffaallll rreessttrraaiinntt
eeqquuiippmmeenntt tthhaatt wwiillll nnoott aallllooww aann iinnddiivviidduuaall ttoo
rreeaacchh tthhee uunniitt eeddggee.. HHoowweevveerr ssuucchh eeqquuiippmmeenntt wwiillll
NNOOTT pprreevveenntt ffaalllliinngg ttoo tthhee ggrroouunndd,, ffoorr tthheeyy aarree
NNOOTT ddeessiiggnneedd ttoo wwiitthhssttaanndd tthhee ffoorrccee ooff aa ffaalllliinngg
iinnddiivviidduuaall..
This unit is built with fall restraint slots located on unit
top that must be used during servicing. See figures
below.
MMaaiinntteennaannccee
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