Carrier 260L, 1300L Refrigeration System Service, Components, Service And Troubleshooting

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

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.

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.

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