MovinCool CM25 Service Manual - Manual (Page 23)

Operation Section
23
4.4 Electronic Expansion Valve
• The electronic expansion valve causes rapid
refrigerant expansion by injecting "high-
temperature, high-pressure liquid refrigerant"
from the condenser through a small orifice. The
resultant "low-temperature, low-pressure mist
refrigerant" is then sent to the evaporator. A
solenoid valve adjusts the refrigerant quantity
according to the evaporator inlet air and outlet
air thermistors such that the mist refrigerant
can undergo heat exchange in the evaporator
under optimal conditions.
4.5 Evaporator
• The evaporator is a heat exchanger covered
with plate fins. Heat is removed from the air
being pulled across the evaporator by the
centrifugal fan. The resulting cool air is
expelled through the cool air vent.
I003162
Refrigerant
Flow
Valve Spring Spring
Valve Holder
Valve
Control Coil
Magnet
Stopper Delivery Screw
Valve
I003145