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Refrigeration Diagnosis (Rev. 04/03)
152
•
•
•
Expansion valve feeler bulb making poor contact
•
•
Expansion valve open too much
•
•
Expansion valve closed too much
•
•
Expansion valve needle eroded or leaking
•
•
•
Expansion valve partially closed by ice, dirt or wax
•
•
•
Liquid refrigerant entering compressor
•
•
Restricted line on the low side
•
•
•
•
Restricted line on the high side
•
•
•
•
Restricted drier
•
Evaporator shutter open
•
•
•
Evaporator shutter stuck closed
•
Discharge service valve back seated
•
Suction service valve back seated
• •
•
•
•
•
•
Faulty three-way valve
• •
•
• •
Faulty pilot solenoid
•
•
Loose or broken electrical connections
•
• •
•
•
Thermostat or thermometer out of calibration
• • • •
Suction pressure gauge out of calibration
•
Leaky receiver tank outlet valve
•
Leaky bypass check valve
• •
•
• •
Leaky condenser check valve
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Hig
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H
igh
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Low su
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Rec
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ide
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low
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SY
MP
TOM
POSSIBLE CAUSES
Summary of Contents for KD-II SR
Page 4: ......
Page 8: ......
Page 13: ...Safety Precautions Rev 04 03 v AEA40...
Page 14: ...Safety Precautions Rev 04 03 vi AEA38...
Page 33: ...Unit Description Rev 04 03 19 1 Evaporator 2 Access Door Rear View Curbside KD II SR 1 2 AEA38...
Page 37: ...Unit Description Rev 04 03 23 Power Receptacle Box KD II SR 50 AEA42...
Page 58: ...Remote Control Panel Features Rev 04 03 44...
Page 112: ...Refrigeration Maintenance Rev 04 03 98...
Page 120: ...106...
Page 146: ...132...
Page 156: ...142...
Page 162: ...148...
Page 170: ...156...
Page 172: ...158...
Page 173: ...159 KD II 30 Schematic Diagram Page 1 of 2...
Page 174: ...160 KD II 30 Schematic Diagram Page 2 of 2...
Page 175: ...161 KD II 30 Wiring Diagram Page 1 of 2...
Page 176: ...162 KD II 30 Wiring Diagram Page 2 of 2...
Page 177: ...163 KD II 50 Schematic Diagram Page 1 of 2...
Page 178: ...164 KD II 50 Schematic Diagram Page 2 of 2...
Page 179: ...165 KD II 50 Wiring Diagram Page 1 of 2...
Page 180: ...166 KD II 50 Wiring Diagram Page 2 of 2...
Page 181: ...167 KD II 50 SR 230 1 60 Wiring Diagram Page 1 of 2...
Page 182: ...168 KD II 50 SR 230 1 60 Wiring Diagram Page 2 of 2...