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8
REFRIGERATION
SYSTEM SERVICE
COMPONENTS
The Carrier Miracool™ refrigeration system
consists of a hermetically sealed compressor and
finned evaporator and condenser coils.
CONDENSER
The condenser has wide finned spaces, which
allow more air passage with less dirt or dust
accumulation. The condenser still requires
periodic cleaning for maximum efficiency.
CONDENSER FAN MOTOR
The condenser fan motor assembly is mounted
between the condenser and the compressor. Air is
drawn through the condenser, over the body of
the compressor and out the rear of the unit
compartment. The motor is wired to cycle with the
compressor but will continue to operate should the
compressor cut out on the overload. (The motor is
permanently lubricated; therefore, oiling is not
required.)
DRIER
The drier is installed in the system just before the
capillary tube. The drier traps minute particles of
foreign material and absorbs any moisture in the
system.
LIQUID CONTROL AND HEAT
EXCHANGER
Liquid refrigerant control to the evaporator of the
system is accomplished by the use of a capillary
tube. This capillary tube is soldered to the suction
line to form a heat exchanger, which subcools the
liquid refrigerant to maintain high efficiency within
the system.
SERVICE AND
TROUBLESHOOTING
CONDENSING UNIT SERVICING
DANGER
Before servicing unit, disconnect electrical
service. Failure to disconnect electrical service
could result in electrical shock and cause
personal injury or death.
1. After disconnecting the unit from the power
supply, remove the grille retaining screw
located in the upper-most part of the grille.
(See Figure 2)
2. Lift the grille up and away from the unit.
3. Unplug the power supply cord located at the
bottom of the cabinet. (See Figure 3)
4. Remove the 2 hex-head screws that hold
the condensing unit base to the cabinet
main rails. (See figure 9)
5. Push the condensing unit base to gain
access to the refrigeration system
components.
DANGER
Before servicing unit, disconnect electrical
service. Failure to disconnect electrical service
could result in electrical shock and cause
personal injury or death.
FIGURE 9 – RELEASE COND. UNIT BASE