Carrier 50TCQD17-D24 Service And Maintenance Instructions page 7

Periodic Clean Water Rinse:
A periodic clean water rinse is very beneficial for coils
that are applied in coastal or industrial environments.
However, it is very important that the water rinse is made
with very low velocity water stream to avoid damaging
the fin edges. Monthly cleaning as described below is
recommended.
CAUTION
!
PERSONAL INJURY AND UNIT DAMAGE
HAZARD
Failure to follow this caution can result in personal
injury or equipment damage.
Only approved cleaning is recommended.
Routine Cleaning of Indoor Coil Surfaces:
Periodic cleaning with Totaline
Coil Cleaner is essential in extending the life of coils.
This cleaner is available from Carrier Replacement
Components Division (p/n P902- - 0301 for one gallon
(3.8L) container, and p/n P902- - 0305 for a 5 gallon (19L)
container). It is recommended that all coils (including
standard aluminum, pre- - coated,
E- - coated coils) be
Environmentally Sound Coil Cleaner as described below.
Coil cleaning should be part of the unit's regularly
scheduled maintenance procedures ensuring the long life
of the coil. Failure to clean the coils can result in reduced
durability in the environment.
Avoid the use of:
S coil brighteners
S acid cleaning prior to painting
S high pressure washers
S poor quality water for cleaning
Totaline Environmentally Sound Coil Cleaner is non- -
flammable, hypoallergenic, non bacterial and a USDA
accepted biodegradable agent that will not harm the coil
or surrounding components, such as electrical wiring,
painted metal surfaces
non- - recommended coil cleaners is strongly discouraged
because coil and unit durability can be affected.
Clean coil as follows:
1. Turn off unit power. Use Lockout/Tagout procedures
on unit power switch.
2. Remove top panel screws on outdoor section.
3. Remove coil corner posts and access panel. See
Fig. 9.
4. Lift and hold Top cover open.
5. Hold the top panel open by placing the coil corner
post between the top panel and the center post.
See Fig. 10.
6. Remove fasteners holding coil sections together at re-
turn end of condenser coil. Carefully separate the out-
door coil section three to four inches. See Fig. 9.

Environmentally Sound
copper/copper
cleaned with the Totaline
or insulation. Use
7. Clean the outer surfaces with a stiff brush in the nor-
mal manner. Use a water hose or other suitable equip-
ment to flush down between the two coil sections to
remove dirt and debris.
8. Secure inner and outer coil rows together with a
field- - supplied fastener.
9. Reposition the outer coil section and remove the coil
corner post from between the top panel and center
post. Reinstall both coil corner posts and access pan-
el. Replace all screws. See Fig. 9.
SCREWS (TYPICAL)
COMPRESSOR
ACCESS PANEL
Fig. 9 - - Cleaning Condenser Coil
COIL CORNER POST
or
COMPRESSOR
ACCESS
PANEL
Fig. 10 - - Propping Up Top Panel
of
Fig. 11 - - Separating Coil Sections
7
TOP PANEL
OUTDOOR
COIL
ACCESS
PANEL
CORNER
OUTDOOR
POST
COIL
CENTER
TOP PANEL
BAFFLE
CONDENSER
COILS
CORNER
POST
SCREWS
(TYPICAL)
C12389
C12390
C08207