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Refrigeration system service, Components, Service and troubleshooting – Carrier Miracool 260L User Manual

Page 8

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8

REFRIGERATION SYSTEM

SERVICE

COMPONENTS

The Carrier Miracool™ refrigeration system consists

of a hermetically sealed compressor and finned evapo-

rator 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 peri-

odic 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 con-

denser, 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 parti-

cles 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

„ CARTRIDGE REMOVAL

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 1.)

2. Lift the grille up and away from the unit.
3. Unplug the power supply and lighting supply

cords located in the front of the cartridge

(Figure 2).

4. Using a pair of wire cutters, cut wire tie that

secures lifting rods at center of front base rail.

(See Figure 2.)

5. Take hold of the end of each lifting rod and rotate

each approximately 90-degrees upward so that

they are nominally vertical (Figure 3). The car-

tridge should be disengaged from the cabinet and

resting on the base of the cabinet assembly. Han-

dling holes are located on either side of the car-

tridge near the top and along the side of the

cartridge (Figure 4). Grasp the cartridge by these

holes and slide the unit forward from the cabinet

until it is free. Use caution to ensure that power

and electrical cords do not get pinched between

the cartridge and cabinet while removing

cartridge.

Before servicing unit, disconnect electrical service.

On sizes 1100L and 1300L, turn disconnect switch

(located on power cord) to the OFF position. Failure

to disconnect electrical service could result in elec-

trical shock and cause personal injury or death.

Before servicing unit, disconnect electrical service.

On sizes 1100L and 1300L, turn disconnect switch

(located on power cord) to the OFF position. Failure

to disconnect electrical service could result in elec-

trical shock and cause personal injury or death.

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