Electrolux FAC124P1A Instrukcje Operacyjne Strona 119

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Section 6 Sealed System
6-5
Outside air
at ambient
temperature
Restrictor Tube
Low pressure liquid
minus absorbed heat
Warm
moist air
Inside
Cooler
drier air
Low pressure
saturated gas
plus absorbed heat
Oil level
Outside
Outside air
plus rejected
heat
High pressure liquid
minus absorbed hea
t
Condenser
Evaporator
Evaporator
Blower Wheel
Fan Motor
Condenser
Fan
Compressor
High pressure
superheated gas
Bulkhead
Figure 6-2. Air-Conditioner Sealed System
Low/High Side Leak or Undercharge
A loss of refrigerant can result in any of the following:
1. Excessive or continuous compressor operation.
2. Above normal freezer compartment temperature.
3. A partially frosted evaporator (depending on amount
of refrigerant loss).
4. Below normal freezer compartment temperature.
5. Low suction pressure (vacuum).
6. Low wattage.
The condenser will be “warm to cool”, depending on the
amount of refrigerant lost. In the case of a low side
refrigerant leak resulting in complete loss of refrigerant,
the compressor will run but will not refrigerate. Suction
pressure will drop below atmospheric pressure and air
and moisture will be drawn into the system saturating the
filter-drier.
If there is reason to believe the system has operated for
a considerable length of time with no refrigerant and the
leak occurred in the low side of the system, excessive
amounts of moisture may have entered the system.
In such cases the two stage service filter-drier part
number 5303918288 and vacuum procedure listed
under Refrigerant Leaks need to be followed to prevent
repetitive service.
If a slight undercharge of refrigerant is indicated and no
leak can be found after a thorough leak test, the charge
can be corrected without changing the compressor.
If a high side leak is located and some refrigerant
remains in the system it is not necessary to change the
compressor.
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