Carrier GEN IV Operator's Manual page 7

2
1. Compressor
2. Electro--Magnetic Clutch
3. Discharge Line
4. Condenser
5. Filter Dryer/Sight Glass
Assembly
Figure 1-1 Component Locations
Filter/Dryer - - The filter/dryer removes moisture and particulate
matter from the refrigerant.
Expansion/Block Valve - - Meters the refrigerant flow into the
evaporator coil. The majority of the Gen 4 (Excel) and all Gen 5
systems use a nonadjustable block valve with an 8° F superheat
setting, which is preset at the factory. If you feel there is a problem
with the block valve, do not attempt to adjust the valve, if needed,
it should be replaced by an authorized Carrier Transport A/C
service center.
Evaporator - - The evaporator is located in the interior of the
vehicle. Its primary function is to transfer heat contained in the
passenger compartment air, into the refrigerant, which is circulated
by the compressor, through the evaporator coil. During this process
the air is also filtered and dehumidified.
Resistor - - Resistors are used to control the speeds of the
permanent magnet evaporator blower motors.
8
7
Air Out
3
4
10
Air Out
1
9
Air In
6. Liquid Line
7. Evaporator
8. Block Valve (TXV)
9. Freezestat--(Coil
freeze--up thermostat)
10. Suction Line
5
Air In
6
5
T--326