Electrolux FAC124P1A Betriebsanleitung PDF herunterladen (Seite 119)

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

Condenser

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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