Electrical, Refrigeration and
µ
P-D Menu Flow Diagrams
Refrigeration Schematic: Components
9-37
CRR-20 & CRR-40, September 1999
CRR-20 & CRR-40
Refrigeration System Components
1.
3DS Compressor
2.
Oil Fill / Drain Fitting
3.
Discharge Service Valve (DSV)
4.
Condenser Fan Pressure Switch (CFPS)
5.
High Pressure Cutout Switch (HPCO)
6.
Compressor Head Discharge Temperature Sensor (CDTS)
7.
Condenser Coil (Circular)
8.
Receiver Tank
9.
High Pressure Relief (Fusible Plug)
10.
Receiver Tank Service Fitting
11.
Sight Glass
12.
Condenser Coil Subcooler Circuit
13.
Liquid Line Service Valve
14.
In-line Filter*
15.
Dehydrator (Filter Drier)*
16.
Heat Exchanger
17.
Liquid Line Solenoid (LLS)
18.
Expansion Valve (TXV)
19.
Expansion Valve Feeler Bulb
20.
Equalizer Line
21.
Distributor
22.
Evaporator Coil
23.
Electric Heaters
24.
Return Air Sensor (RET)
25.
Evaporator Coil Sensor (ECOIL)
26.
Supply Air Sensor (SUP)
27.
Condenser Coil Sensor (CCOIL)
28.
Ambient Sensor (AMBT)
29.
Controller (
µ
P-D)
30.
Evaporator Pressure Regulator (KVQ Valve)
31.
Suction Service Valve (SSV)
32.
Liquid Injection Valve (LIV)
33.
Condenser Check Valve (CCV)
34.
Dehumidify Solenoid Valve (DSV) (Option)
35.
Humidity Sensor (rH) (Option)
36.
Water-Cooled Condenser-Receiver Tank** (Option)
37.
Water Pressure Switch (WPS) (Option)
38.
Water Inlet Coupling (Option)
39.
Water Outlet Coupling (Option)
40.
High Pressure Relief Valve (Option)
*Units built after 3/9/99 and all models with two evaporator fans feature a
large, one-piece Filter Drier/In-line Filter.
**Units built after 8/99 feature a fusible plug and service fitting located on the
tank.
Summary of Contents for CRR-20
Page 4: ......
