Unit Description
24
Zone 1 Cool, Zone 2 Cool, and
Zone 3 Cool
High pressure refrigerant vapor leaves the
compressor and flows through the open CIS to the
condenser where the refrigerant condenses into
high pressure liquid. The liquid refrigerant flows
through the receiver tank into the liquid lines.
The LLS is open so some of the refrigerant flows
through the Zone 1 expansion valve into the
Zone 1 evaporator. There the liquid refrigerant
cools the Zone 1 evaporator as it evaporates into
low pressure vapor. The refrigerant returns to the
compressor through the SLCV and the
accumulator.
The LLS2 is open so some of the refrigerant flows
through the Zone 2 expansion valve into the
Zone 2 evaporator. There the liquid refrigerant
cools the Zone 2 evaporator as it evaporates into
low pressure vapor. The refrigerant returns to the
compressor through the SLS2, the suction line, the
SLCV2, and the accumulator.
The LLS3 is open so some of the refrigerant flows
through the Zone 3 expansion valve into the
Zone 3 evaporator. There the liquid refrigerant
cools the Zone 3 evaporator as it evaporates into
low pressure vapor. The refrigerant returns to the
compressor through the SLS3, the suction line, the
SLCV3, and the accumulator.
Host Unit and Zone 1 Evaporator
1. Liquid Line Solenoid (LLS)—Open
2. Liquid Return Check Valve (LRCV)—Closed
3. Suction Line Check Valve (SLCV)—Open
4. Suction Line Solenoid (SLS)—Open
5. Hot Gas Solenoid (HGS)—Closed
6. Condenser Inlet Solenoid (CIS)—Open
7. Condenser Inlet Check Valve (CICV)—Open
8. Receiver Tank Pressure Solenoid
(RTPS)—Closed
9. Condenser Check Valve (CCV)—Open
10. Bypass Hand Valve
11. Purge Valve (PV)—Closed
12. Purge Check Valve (PCV)—Closed
Zone 2 Evaporator
1C. Zone 2 Liquid Line Solenoid (LLS2)—Open
2C. Zone 2 Liquid Return Check Valve
(LRCV2)— Closed
3C. Zone 2 Suction Line Check Valve
(SLCV2)— Open
4C. Zone 2 Suction Line Solenoid (SLS2)—Open
5C. Zone 2 Hot Gas Solenoid (HGS2)—Closed
Zone 3 Evaporator
1R. Zone 3 Liquid Line Solenoid (LLS3)—Open
2R. Zone 3 Liquid Return Check Valve
(LRCV3)— Closed
3R. Zone 3 Suction Line Check Valve
(SLCV3)— Open
4R. Zone 3 Suction Line Solenoid (SLS3)—Open
5R. Zone 3 Hot Gas Solenoid (HGS3)—Closed
Summary of Contents for 002008
Page 4: ...4 ...
Page 30: ...Unit Description 30 Figure 9 Front View AJA920 ...
Page 31: ...Unit Description 31 1 Access Panels 2 Defrost Damper Figure 10 Back View 1 2 ARA104 ...
Page 114: ...Mechanical Diagnosis 114 ...
Page 116: ...Electric Standby Diagnosis 116 ...
Page 120: ...Remote Evaporator Specifications 120 ...
Page 122: ...Remote Evaporator Maintenance Inspection Schedule 122 ...
Page 128: ...Remote Evaporator Electrical Maintenance 128 ...
Page 132: ...Remote Evaporator Refrigeration Service Operations 132 ...
Page 134: ...Remote Evaporator Structural Maintenance 134 ...
Page 136: ...Remote Evaporator System Diagnosis 136 ...
Page 140: ...Index 140 ...
Page 142: ......
Page 143: ...143 Model 30 Schematic Diagram Page 1 of 2 ...
Page 144: ...144 Model 30 Schematic Diagram Page 2 of 2 ...
Page 145: ...145 Model 30 Wiring Diagram Page 1 of 4 ...
Page 146: ...146 Model 30 Wiring Diagram Page 2 of 4 ...
Page 147: ...147 Model 30 Wiring Diagram Page 3 of 4 ...
Page 148: ...148 Model 30 Wiring Diagram Page 4 of 4 ...
Page 149: ...149 Model 50 Schematic Diagram Page 1 of 2 ...
Page 150: ...150 Model 50 Schematic Diagram Page 2 of 2 ...
Page 151: ...151 Model 50 Wiring Diagram Page 1 of 5 ...
Page 152: ...152 Model 50 Wiring Diagram Page 2 of 5 ...
Page 153: ...153 Model 50 Wiring Diagram Page 3 of 5 ...