Owners Guide
13
shows a temperature warmer than the adjusted seng, the thermostat’s contacts close, compleng
the circuit that operates the compressor. The compressor takes in the low pressure refrigerant gas and
converts it to high pressure refrigerant gas. Passing through the condenser (radiator), the refrigerant
gas gives o heat to the air surrounding the condenser, by way of the cooling ns, like any radiator. Dur-
ing this process the high pressure refrigerant gas changes state as it loses heat, coming out of the
condenser as a high pressure liquid refrigerant. The dryer / lter blocks parcles, and contains a des-
sicant to remove moisture from the refrigeraon system. Moisture (water) in the refrigeraon system
can damage or cause the refrigeraon system to fail. This is due to the moisture reacng with the re-
frigerant gas to form corrosive acids and sludge that can aack internal refrigeraon components caus-
ing them to fail and / or clogging the capillary tube that stops the refrigeraon system from cooling the
refrigerator and freezer. These acids and sludge that are formed by their reacon with moisture are
powerful, toxic substances. Refrigeraon manufacturers go to great lengths to remove as much mois-
ture and air from the refrigeraon system before they inject the refrigerant gas into the system and seal
it.
b. From the output side of the dryer/lter, the high pressure liquid ows through the evaporator, which
in fact is incorporated into the oor and ceiling of the freezer compartment of the refrigerator. In this
process, the refrigerant lowers temperatures by absorbing heat from the interior of the refrigerator,
changing in the process to low pressure liquid refrigerant, then to a low pressure refrigerant gas.
c. On g. 2-2, look at the starter relay. This relay performs 2 important funcons: It brings both the
thermostat and condenser fan motor into the compressor start circuit, and it provides the required
sequence for bringing the compressor to full power. When the thermostat closes, the circuit between
the 115 volt power cord and the terminal of the starter relay is completed, and electricity ows
through the starter relay and into the start-up and run windings of the compressor. The compressor’s
electrical motor comes up to speed within one or two seconds and in doing so, allows the power to the
starter windings to be disconnected by way of its relay. Also the compleon of the electrical circuit pro-
vides power to the condenser fan motor. If the fan does not operate the compressor will overheat and
cycle o by way of its thermal overload. Connecons are shown in g. 2-2. Noce that EITHER fan mo-
tor line can be connected to either terminal on the compressor starter relay. Looking at the connecons
you will see that each of the two fan motor lines go to each terminal, secured by a spade lug connec-
on.
d. The element marked accumulator is a secon of the evaporator that acts as a reservoir, keeping the
return line to the compressor lled with low pressure refrigerant gas.
e. The refrigeraon system cannot funcon without proper operaon of the fan.
f. Fig. 2-2 shows a system that uses a 230 VAC power source. If your system uses a primary source of
115 VAC, the transformer is not required: plug the 115 VAC electrical plug into the 115 VAC outlet.
g. Noce that the 115 VAC power cord’s green wire and a short green wire from one to the compres-
sor’s mounng brackets are secured by screws to the cabinet’s bare metal base plate. See also g. 3-1,
No. 5.
h. Refer to g. 2-2. It is important to noce that a failure of the starter relay can appear to be a failure
of the compressor. When the relay funcons as it should in normal operaon, closing of the thermo-
stat’s relay allows 115 VAC to ow from the black lead of the refrigerator’s power cord through the con-
tacts of the thermostat, along the return wire lead from the thermostat to the compressor’s overload,
then to the starter relay. The relay acvates the compressor and condenser fan motor. The white lead