Carrier 50JS Manual De Usuario
Failure to follow these warnings could result in serious injury
or death:
1. Turn off electrical power to the unit before performing any
or death:
1. Turn off electrical power to the unit before performing any
maintenance or service on this unit.
2. Use extreme caution when removing panels and parts. As
with any mechanical equipment, personal injury can result
from sharp edges.
from sharp edges.
3. Never place anything combustible either on, or in contact
with, the unit.
Errors made when reconnecting wires may cause improper
and dangerous operation. Label all wires prior to disconnec-
tion when servicing.
and dangerous operation. Label all wires prior to disconnec-
tion when servicing.
The minimum maintenance requirements for this equipment are as
follows:
follows:
1. Inspect air filter(s) each month. Clean or replace when
necessary.
2. Inspect indoor coil, drain pan, and condensate drain each
cooling season for cleanliness. Clean when necessary.
3. Inspect blower motor and wheel for cleanliness each cooling
season. Clean when necessary.
4. Check electrical connections for tightness and controls for
proper operation each cooling season. Service when neces-
sary.
sary.
AIR FILTER
IMPORTANT:
Never operate the unit without a suitable air filter
in the return-air duct system. Always replace the filter with the
same dimensional size and type as originally installed (See Tables
1A and 1B for recommended filter sizes).
same dimensional size and type as originally installed (See Tables
1A and 1B for recommended filter sizes).
Inspect air filter(s) at least once each month and replace
(throwaway-type) or clean (cleanable-type) at least twice during
each cooling season or whenever the filters become clogged with
dust and lint.
(throwaway-type) or clean (cleanable-type) at least twice during
each cooling season or whenever the filters become clogged with
dust and lint.
INDOOR BLOWER AND MOTOR
NOTE:
All motors are prelubricated. Do not attempt to lubricate
these motors.
For longer life, operating economy, and continuing efficiency,
clean accumulated dirt and grease from the blower wheel and
motor annually.
clean accumulated dirt and grease from the blower wheel and
motor annually.
Disconnect and tag electrical power to the unit before
cleaning and lubricating the blower motor and wheel. Failure
to adhere to this warning could cause personal injury or death.
cleaning and lubricating the blower motor and wheel. Failure
to adhere to this warning could cause personal injury or death.
OUTDOOR COIL, INDOOR COIL, AND CONDENSATE
DRAIN PAN — Inspect the condenser coil, evaporator coil, and
condensate drain pan at least once each year.
DRAIN PAN — Inspect the condenser coil, evaporator coil, and
condensate drain pan at least once each year.
The coils are easily cleaned when dry; therefore, inspect and clean
the coils either before or after each cooling season. Remove all
obstructions, including weeds and shrubs, that interfere with the
airflow through the condenser coil.
the coils either before or after each cooling season. Remove all
obstructions, including weeds and shrubs, that interfere with the
airflow through the condenser coil.
Straighten bent fins with a fin comb. If coated with dirt or lint,
clean the coils with a vacuum cleaner, using the soft brush
attachment. Be careful not to bend the fins. If coated with oil or
grease, clean the coils 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 air filter(s). For best
clean the coils with a vacuum cleaner, using the soft brush
attachment. Be careful not to bend the fins. If coated with oil or
grease, clean the coils 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 air filter(s). For best
results, spray condenser coil fins from inside to outside the unit.
On units with an outer and inner condenser coil, be sure to clean
between the coils. Be sure to flush all dirt and debris from the unit
base.
On units with an outer and inner condenser coil, be sure to clean
between the coils. Be sure to flush all dirt and debris from the unit
base.
Inspect the drain pan and condensate drain line when inspecting
the coils. Clean the drain pan and condensate drain by removing all
foreign matter from the pan. Flush the pan and drain trough with
clear water. Do not splash water on the insulation, motor, wiring,
or air filter(s). If the drain trough is restricted, clear it with a
‘‘plumbers snake’’ or similar probe device. Ensure that the
auxiliary drain port above the drain trough is also clear.
the coils. Clean the drain pan and condensate drain by removing all
foreign matter from the pan. Flush the pan and drain trough with
clear water. Do not splash water on the insulation, motor, wiring,
or air filter(s). If the drain trough is restricted, clear it with a
‘‘plumbers snake’’ or similar probe device. Ensure that the
auxiliary drain port above the drain trough is also clear.
OUTDOOR FAN
Keep the condenser fan free from all obstructions to ensure
proper cooling operation. Never place articles on top of the
unit. Damage to unit may result.
proper cooling operation. Never place articles on top of the
unit. Damage to unit may result.
1. Inspect the fan blades for cracks or bends.
2. If fan needs to be removed, remove screws holding outdoor air
intake grille and remove grille.
3. Loosen the setscrew and slide the fan off the motor shaft.
4. When replacing fan blade, position blade so that the hub is 1/8
in. away from the motor end (1/8 in. of motor shaft will be
visible) (See Fig. 20).
visible) (See Fig. 20).
5. Ensure that setscrew engages the flat area on the motor shaft
when tightening.
6. Replace grille.
ELECTRICAL CONTROLS AND WIRING — Inspect and check
the electrical controls and wiring annually. Be sure to turn off the
electrical power to the unit.
the electrical controls and wiring annually. Be sure to turn off the
electrical power to the unit.
Remove access panel to locate all the electrical controls and
wiring. Check all electrical connections for tightness. Tighten all
screw connections. If any smoky or burned connections are
noticed, disassemble the connection, clean all the parts, restrip the
wire end and reassemble the connection properly and securely.
wiring. Check all electrical connections for tightness. Tighten all
screw connections. If any smoky or burned connections are
noticed, disassemble the connection, clean all the parts, restrip the
wire end and reassemble the connection properly and securely.
After inspecting the electrical controls and wiring, replace all the
panels. Start the unit, and observe at least one complete cooling
cycle to ensure proper operation. If discrepancies are observed in
operating cycle, or if a suspected malfunction has occurred, check
each electrical component with the proper electrical instrumenta-
tion. Refer to the unit wiring label when making these checkouts.
panels. Start the unit, and observe at least one complete cooling
cycle to ensure proper operation. If discrepancies are observed in
operating cycle, or if a suspected malfunction has occurred, check
each electrical component with the proper electrical instrumenta-
tion. Refer to the unit wiring label when making these checkouts.
NOTE:
Refer to the Sequence of Operation section as an aid in
determining proper control operation.
REFRIGERANT CIRCUIT — Inspect all refrigerant tubing con-
nections and the unit base for oil accumulation annually. Detecting
oil generally indicates a refrigerant leak.
nections and the unit base for oil accumulation annually. Detecting
oil generally indicates a refrigerant leak.
System under pressure. Relieve pressure and recover all
refrigerant before system repair or final unit disposal to avoid
personal injury or death. Use all service ports and open all
flow-control devices, including solenoid valves.
refrigerant before system repair or final unit disposal to avoid
personal injury or death. Use all service ports and open all
flow-control devices, including solenoid valves.
If oil is detected or if low performance is suspected, leak-test all
refrigerant tubing using an electronic leak detector, or liquid-soap
solution. If a refrigerant leak is detected, refer to Check for
Refrigerant Leaks section.
refrigerant tubing using an electronic leak detector, or liquid-soap
solution. If a refrigerant leak is detected, refer to Check for
Refrigerant Leaks section.
If no refrigerant leaks are found and low performance is suspected,
refer to Checking and Adjusting Refrigerant Charge section.
refer to Checking and Adjusting Refrigerant Charge section.
INDOOR AIRFLOW — The indoor airflow does not require
checking unless improper performance is suspected. If a problem
checking unless improper performance is suspected. If a problem
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