Evaporator Section - Carrier AC310 Operation And Service Instructions Manual

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1 Condenser Coil Assembly
Receiver Tank (Part Of Coil Assembly)
2 Service Valve
Figure 1- -3 Condensing Section Components (AC350 Single Loop - - GEN II)

1.2.3 Evaporator Section

The dual loop AC310 & AC350 (GEN I) evaporator
section (See Figure 1--4) includes the evaporator coils,
eight (8) or twelve (12) single--shafted blower/motor
assemblies, two heater
thermostatic expansion valves, two liquid line solenoid
valves, and condensate drain connections.
NOTE
The GEN I series of AC310 & AC350 evapora-
tors are supplied with single shaft blower/motor
assemblies. The GEN II series have dual shaft
blower/motor assemblies.
The single loop AC310 & AC350 evaporator section
(See Figure 1--5) includes the evaporator coils, four (4)
or six (6) double--shafted blower/motor assemblies,
heater coil assemblies, one thermostatic expansion
T--304
4
coil assemblies, two
4
3 Filter Drier
4 Fan & Motor
5 Frame (Aluminum)
valve, one liquid line solenoid valve (to add in--dash
service port), and condensate drain connections.
The liquid line solenoid valve closes when the system is
shut down to prevent flooding of coils and the
compressor with liquid refrigerant. The evaporator coils
provide heat transfer surface for transferring heat from
air circulating over the outside of the coil to refrigerant
circulating inside the tubes; thus providing cooling. The
heating coils provide a heat transfer surface for
transferring heat from engine coolant water circulating
inside the tubes to air circulating over the outside
surface of the tubes, thus providing heating. The fans
circulate the air over the coils. The air filters remove dirt
particles from the air before it passes over the coils. The
thermostatic expansion valve meters the flow of
refrigerant entering the evaporator coils. The heat valve
controls the flow of engine coolant to the heating coils
upon receipt of a signal from the controller. The
condensate drain connections provide a means for
connecting tubing for disposing of condensate collected
on the evaporator coils during cooling operation.
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