General Description; Condenser Unit - Carrier CAPRI-280 Operation And Service Manual

1.2 General description

1.2.1 Condenser Unit

The condenser unit includes condenser coils, fan and
motor assemblies, filter-drier, receiver, liquid line
solenoid valve, king valves, discharge check valve, and an
ambient temperature sensor.
The condenser coils provide a heat transfer surface for
condensing refrigerant gas at a high temperature and
pressure into a liquid at high temperature and pressure.
The condenser fans circulate ambient air across the
outside of the condenser tubes at a temperature lower
than refrigerant circulating inside the tubes; this results
in condensing the refrigerant into a liquid. The
filter-drier removes moisture and other noncondensibles
from the liquid refrigerant before it enters the thermal
expansion valves in the evaporator assembly.
1. Condenser Coil
2. Condenser Fan Motor Assembly
3. Receiver Tank
4. Service Valve
5. Filter Drier
6. Liquid Hose
7. Gas Hose
8. Condenser Motor Harness
9. Condenser Motor Plate
10. Lid Screw Nut
11. Locking Screw Gasket
12. Lid Bolt Support
T-283
The receiver collects and stores liquid refrigerant. The
receiver is fitted with upper and lower liquid level sight
glasses to enable determining refrigerant liquid level in
the receiver. The receiver is also fitted with a fusible plug
which protects the system from unsafe high refrigerant
temperatures. The main liquid line solenoid valve closes
when system is shut down to prevent flooding of coils with
liquid refrigerant and to isolate the filter-drier for
servicing when the compressor is shut down. The king
valves enable servicing of the filter-drier. The ambient
temperature sensor measures ambient temperature and
sends an electrical signal to the controller.
The discharge line check valve is a spring loaded,
normally closed valve that opens with the flow of
refrigerant from the compressor. When the compressor
clutch is disengaged, the discharge check valve will close,
preventing the flow of high pressure liquid from the
condenser to flow back into the compressor.
Figure 1-2. Condenser Unit
13. Square Nut
14. Locking Screw Gasket
15. Right Front Grille
16. Left Front Grille
17. Right Front Lateral Grille
18. Left Front Grille
19. Right Rear Lateral Grille
20. Left Rear Lateral Grille
21. Condenser Fiberglass Base
22. Condenser Top Cover Lid
23. Liquid Line Solenoid Valve
24. Receiver Tank Support
1-2