Vendo VARI-PAK 450, Manual

Page: 97 / 113

M-6
07/2003
M-7
07/2003
REFRIGERATION PARTS DESCRIPTION
The compressor, condenser, drier, capillary tube, evaporator, and accumulator are part of
a sealed system (refer to Figure 2). These items are not available separately.
COMPRESSOR
The compressor takes in low pressure vapor and compresses it, increasing both the
pressure and the temperature. The hot, high pressure gas is forced out to the condenser.
The compressor and the motor that drives the compressor are sealed inside a housing.
The compressor, as a unit, is mounted on the refrigeration base. The base is mounted in
the bottom of the vendor, outside the sealed refrigeration space.
CONDENSER
The condenser takes heat out of the high pressure vapor that it receives from the
compressor. As the vapor passes through the condenser it cools and returns to a liquid
state. The condenser is mounted to the refrigeration base near the front of the vendor. It
is easily accessible for cleaning.
DRIER
The drier is a molecular sieve strainer drier. It removes water and solid particles from
refrigerant liquid. One side of the drier is connected to the outlet line of the condenser;
the other side is connected to the capillary tube going to the evaporator.
CAPILLARY TUBE
The capillary tube controls, at a steady rate, the flow of refrigerant liquid to the evaporator.
It has a very small inside diameter to keep pressure in the evaporator low while the
pressure in the condenser is high. It is the connecting link between the condenser and
evaporator.
EVAPORATOR
The evaporator is a heat transference device. It removes the heat from the air in a
refrigerated space and transfers it to the refrigerant liquid. This liquid evaporates into
a vapor and is removed by the compressor. The evaporator is mounted inside the
refrigerated space of the cabinet, directly below the delivery chute.
ACCUMULATOR
The accumulator traps any refrigerant liquid, which did not boil off into a vapor before
reaching the compressor. The accumulator allows the refrigerant liquid to boil off as a
vapor (preventing damage to the compressor). It also prevents suction line sweating.
The accumulator is mounted in the suction line on the outline side of the evaporator.