Movincool CM25 Service Manual User Manual download pdf (Page 24)

Operation Section

4.6 Accumulator

• The accumulator is mounted on the suction

gas piping between the evaporator and the

compressor. The accumulator separates the

liquid refrigerant from the gas refrigerant,

allowing only the gas refrigerant to enter the

compressor. In the accumulator, suction gas is

led into a cylindrical vessel where the speed of

the gas is decreased. This process separates

the refrigerant contained in the gas by the force

of gravity, causing the refrigerant to accumulate at the bottom of the vessel. As a result, the

compressor is protected from possible damage caused by liquid refrigerant intake.

4.7 High-Pressure Switch

• The high-pressure switch prevents the

condenser and compressor from being

damaged by excessively high pressure in the

high-pressure line of the refrigeration cycle.

The switch is normally closed. The snap disk

responds to the variations in pressure and, if

pressure is abnormally high, the snap disk

moves down to push the pin down, causing the

internal contacts to open. This interrupts the

ground signal at the relay board which turns the compressor off.

• Possible causes of this trouble include:

- The condenser air filter is dirty, and restricting air flow.

- The condenser fan motor is defective.

I000514

from Evaporator

to Compressor

I001768

Pressure of Refrigerant

Movable Point

Snap Disk

Terminal

Lead Wires

Stationary Point

Molding by Resin

Case

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Movincool CM25 Service Manual User Manual Page 24