Condenser Coils - Carrier Air Conditioner Operation And Service Manual

3. Apply torque in one-third steps until required torque is
reached. Load all bolts to each one-third step before pro-
ceeding to next one-third step.
4. No less than one hour later, retighten all bolts to required
torque values.
5. After refrigerant is restored to system, check for refriger-
ant leaks with soap solution or Halide device.
6. Replace cooler insulation.

Condenser Coils

COIL CLEANING — For standard aluminum, copper and
pre-coated aluminum fin coils, clean the coils with a vacuum
cleaner, fresh water, compressed air, or a bristle brush (not
wire). Units installed in corrosive environments should have
coil cleaning as part of a planned maintenance schedule. In this
type of application, all accumulations of dirt should be cleaned
off the coil.
Do not use high-pressure water or air to clean coils — fin
damage may result.
CLEANING E-COATED COILS — Follow the outlined pro-
cedure below for proper care, cleaning and maintenance of
E-coated aluminum or copper fin coils:
Coil Maintenance and Cleaning Recommendations — Rou-
tine cleaning of coil surfaces is essential to maintain proper
operation of the unit. Elimination of contamination and
removal of harmful residues will greatly increase the life of the
coil and extend the life of the unit.
Remove Surface Loaded Fibers — Surface loaded fibers or
dirt should be removed with a vacuum cleaner. If a vacuum
SIZES 080,090* WITH 14-BOLT HEADS
SIZES 130,150*
*And associated modular units.
Fig. 27 — Cooler Head Bolt Tightening Sequence (Typical Tube Sheet)
cleaner is not available, a soft brush may be used. In either
case, the tool should be applied in the direction of the fins. Coil
surfaces can be easily damaged (fin edges bent over) if the tool
is applied across the fins.
NOTE: Use of a water stream, such as a garden hose, against a
surface loaded coil will drive the fibers and dirt into the coil.
This will make cleaning efforts more difficult. Surface loaded
fibers must be completely removed prior to using low velocity
clean water rinse.
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.
Routine Cleaning of Coil Surfaces — Monthly cleaning
with Enviro-Shield™ Coil cleaner is essential to extend the life
of coils. It is recommended that all coils, including standard
aluminum, pre-coated, copper/copper or E-coated coils are
cleaned with the Enviro-Shield Coil Cleaner as described
below. Coil cleaning should be part of the units regularly
scheduled maintenance procedures to ensure long life of the
coil. Failure to clean the coils may result in reduced durability
in the environment.
Enviro-Shield Coil Cleaner is non-flammable, hypoaller-
genic, non-bacterial, USDA accepted biodegradable and 100%
ecologically safe agent that will not harm the coil or surround-
ing components such as electrical wiring, painted metal surfac-
es or insulation. Use of non-recommended coil cleaners is
strongly discouraged since coil and unit durability could be
affected.
SIZES 100,110* WITH 22-BOLT HEADS
SIZES 170,190*
56
SIZES 080,090* WITH 18-BOLT HEADS
SIZES 100,110* WITH 16-BOLT HEADS
SIZE 210*