Carrier WeatherMaster 50HCQ04-12 Service And Maintenance Instructions page 9

ROUTINE CLEANING OF INDOOR COIL SURFACES
Periodic cleaning with Totaline
cleaner is essential to extend the life of coils. This cleaner is
available from Replacement Components Division as part
number P902-0301 for a one gallon (3.8L) container, and part
number P902-0305 for a 5 gallon (19L) container. It is recom-
mended that all coils, including standard aluminum, pre-coat-
ed, copper/copper or e-coated coils be cleaned with the To-
taline environmentally sound coil cleaner as described below.
Coil cleaning should be part of the unit's regularly scheduled
maintenance procedures to ensure long life of the coil. Failure
to clean the coils may result in reduced durability in the envi-
ronment.
Avoid use of:
• coil brighteners
• acid cleaning prior to painting
• high pressure washers
• poor quality water for cleaning
Totaline environmentally sound coil cleaner is nonflammable,
hypoallergenic, non-bacterial, and a USDA accepted biode-
gradable agent that will not harm the coil or surrounding com-
ponents such as electrical wiring, painted metal surfaces, or in-
sulation. Use of non-recommended coil cleaners is strongly
discouraged since coil and unit durability could 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 coil end of unit.
3. Remove coil corner post. See Fig. 12. To hold top panel
open, place coil corner post between top panel and center
post. See Fig. 13.
Fig. 12 — Cleaning Condenser Coil (Size 04-06
shown)
Fig. 13 — Propping Up Top Panel
environmentally sound coil
®
4. For Sizes 04-06: Remove screws securing coil to compres-
sor plate and compressor access panel.
5. For Sizes 07-12: Remove fastener holding coil sections
together at return end of condenser coil. Carefully separate
the outdoor coil section 3 to 4 in. (7.6 to 10 cm) from the
inner coil section. See Fig. 14.
Fig. 14 — Separating Coil Sections
6. Clean the outer surfaces with a stiff brush in the normal
manner. Use a water hose or other suitable equipment to
flush down between the 2 coil sections to remove dirt and
debris.
7. Secure inner and outer coil rows together with a field-sup-
plied fastener.
8. Reposition the outer coil section and remove the coil cor-
ner post from between the top panel and center post. Rein-
stall the coil corner post and replace all screws.
TOTALINE ENVIRONMENTALLY
CLEANER APPLICATION EQUIPMENT
• 2.5 gal (9.5 L) garden sprayer
• Water rinse with low velocity spray nozzle
UNIT DAMAGE HAZARD
Failure to follow this caution may result in reduced unit
performance or unit shutdown.
High velocity water from a pressure washer, garden hose,
or compressed air should never be used to clean a coil. The
force of the water or air jet will bend the fin edges and in-
crease airside pressure drop.
9
SOUND
WARNING
COIL