Bryant 542E - Manual (Page 14)

IX. CARE AND MAINTENANCE
WARNING: A failure to follow these instructions could re-
: suit in serious personal injury:
1. Disconnect all electrical power to system before per­
forming any maintenance or service on the unit.
2. Because of possible personal injury or damage to the
equipment, maintenance and/or service should be per­
formed by qualified persons only.
3. As with any mechanical equipment, personal injury can
, result from sharp edges, etc.; therefore, be very careful
; \ when removing panels and parts.
ft; 4. Never place anything combustible on, ;in contact with,
eft:' or near the unit.
...■ ftft
To ensure continuing high performance, and to minimize
possible equipment failure, it is essential that periodic main­
tenance be performed on this equipment. Consult your local
Dealer as to the proper frequency of maintenance and the
availability of a maintenance contact.
The ability to perform maintenance on this equipment re­
quires certain mechanical skills and tools. If you do not
possess these, contact your Dealer for maintenance.
The minimum maintenance that should be performed on
this equipment is as follows:
1. Inspect air filter after each month of system operation.
Clean or replace as required.
2. Inspect coils, drain pan, and condensate drain before
each heating and cooling season for cleanliness. Clean
as necessary.
3. Inspect blower motor and wheel for cleanliness and
lubrication each heating and cooling season. Clean and
lubricate as necessary.
4. Inspect all electrical connections for tightness and con­
trols for proper operation each heating and cooling
season. Service as necessary.
A. Air Filter
CAUTION:
I).. not operate the unit without having a suita­
ble air filter in place in the return-air duct system. Always-
replace filter w'ith same size and type.
Air filters should be inspected at least once each month and
replaced (disposable-type) or cleaned (cleanable-type) at
least twice during each heating and cooling season or when­
ever the filter becomes clogged with dust and lint.
Filters are not supplied as an integral part of the 542E. The
field-supplied air filter may be either disposable or cleanable.
Contact your Dealer if you cannot determine the location or
type of air filter in your system.
Model 542D units have two factory-supplied disposable
filters located in the down-discharge plenum section of the
unit. The access door on the return-air inlet side of the
plenum must be removed to gain access to the filters. See
Figure 4. When clogged with dirt or lint, these filters should
be replaced with the same size and type.
B. Lubrication
The outdoor fan motor and indoor blower are prelubricated
for 2 years of heavy duty or 5 years of normal duty. When
lubrication is necessary, call your Dealer for service.
C. Indoor and Outdoor Coils
WARNING:
Be sure all electrical power to the system is '
turned OFF before cleaning coils.
The unit top cover must be removed to gain access to the
coils. The outdoor fan motor, leads must be disconnected in
the unit control box before lifting the cover, and reconnected
in accordance with the unit wiring label after replacing the
top cover.
The coils are easily cleaned when they are dry; therefore,
they should be inspected and cleaned before each cooling
season, and inspected periodically during the year.
If the coils are coated with dirt or lint, they should be
vacuumed with a vacuum cleaner soft brush attachment. Be
careful not to bend the fins. If the coils are coated with oil or
grease, they can be cleaned with a mild detergent and water
solution. Rinse coils with clear water, using a garden hose.
Be careful not to splash water on motors, insulation, wiring,
or filters. For best results, spray outdoor fins from inside to
outside the unit. On units with an outer and inner outdoor
coil, be sure to clean between coils. Be sure to flush all dirt
and debris from the unit base, from the condensate drain pan
located under the indoor coil, and from the condensate drain
line.
D. Condensate Drain
The drain pan and condensate drain should be checked at the
same time the coils are checked. Clean the pan and drain pan
and condensate drain by removing all foreign matter from
the pan. Flush pan and drain tube with clear water. Be care­
ful not to splash water on insulation, motor, wiring, or air
filter. If the drain tube is restricted, it can generally be
cleared with high-pressure water. If this does not work, try a
“plumber’s snake’’ or similar probe device.
E. Indoor Blower
WARNING: Be eiiro all elei'l rical power to t lie unit ii ruriied
off hefore servicing the blower.
The blower should be inspected at least once each year. Re­
move caked-on dirt from the blower wheel and housing with
a brush; remove grease with a mild solvent. Make sure the
blower is centered in the blower housing. Be careful not to
disturb balance weights.
F. Outdoor Fan
WARNING:
Be m ire all electrical power to the unit is ofl
lieforc
S('f\
icing the fan. Do not poke slicks, screwdriver.-, or
any other object into revolving fan blades—severe bodily in­
jury may result.
The fan should be kept free of all obstructions to ensure
proper operation. Do not set articles on top of unit that could
possibly interfere with the airflow of the fan.
Each year the fan blades should be inspected for cracks or
bends. The blades should clear the motor by no more than 1/4
inch. If the blade assembly has slipped down the motor shaft,
adjust the fan position on the motor shaft by loosening the
setscrew (s) and moving the blade assembly up. Be sure the
setscrew (s) is on the flat of the motor shaft before tight­
ening.
G. Electrical Controls and Wiring
WARNING;
Be sure all electrical power to the unit and the
heaters (if used) is turned off.
NOTE: When an accessory supplemental electrical heater is
being used in the system, there may be a separate electrical
supply to the heater.
With power disconnected to the unit, check all electrical
connections for tightness. Tighten all screws on connections.
If any smoky or burned connections are noticed, disassemble
the connections, clean all parts, strip the wire, and reassem­
ble properly and securely. Electrical controls are difficult to
check without proper instrumentation; therefore, reconnect
electrical power to the unit and observe the unit through one
complete operating cycle. If there are any discrepancies in
the operating cycle, contact your Dealer and request service.
H. Refrigerant Circuit
The refrigerant circuit is difficult to check for leaks without
proper equipment; therefore, if inadequate performance is
suspected, contact your local Dealer for service.
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