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Refrigeration Service Operations (Rev. 04/03)
111
8.
Unsolder the remaining outlet suction line and inlet
liquid line connections from the condenser side of the
bulkhead. Remove putty from around the lines before
unsoldering the connections.
9.
Lift the heat exchanger assembly out of the evaporator
housing
Installation
1.
Clean the tubes for soldering.
2.
Place the heat exchanger assembly in the evaporator
housing and install the mounting hardware loosely.
3.
Solder liquid inlet and suction outlet line connections
on the condenser side of the bulkhead. Seal openings
through bulkhead with putty when refrigerant lines
have cooled off.
4.
Tighten the heat exchanger mounting hardware
securely.
5.
Solder suction line connection to the evaporator coil.
6.
Connect the equalizer line flare fitting to the suction
line and liquid outlet line flare fitting to the expansion
valve.
7.
Pressurize the low side and test for leaks. If no leaks are
found, evacuate the unit.
8.
Clean the suction tube to a bright polished condition.
Install the feeler bulb clamps and feeler bulb on the side
of the suction line in its former position. The feeler
bulb must make good contact with the suction line or
operation will be faulty. Wrap with insulating tape.
9.
Open the refrigeration valves and place the unit in oper-
ation. Install refrigerant charge.
10. Test the unit to see that the expansion valve is properly
installed.
HIGH PRESSURE CUTOUT SWITCH
Removal
1.
Pump down the compressor and equalize pressure to
slightly positive.
2.
Front seat the discharge and suction service valves.
Release remaining pressure from the discharge service
valve.
3.
Disconnect the wires and remove the high pressure cut-
out switch from the compressor cylinder head.
Installation
1.
Apply a refrigerant locktite to the threads of the high
pressure cutout switch.
2.
Install and tighten high pressure cutout switch and
reconnect the wires.
3.
Pressurize the refrigeration system and test for leaks.
4.
If no leaks are found, open the refrigeration valve and
place the unit in operation.
1.
High Pressure Cutout Switch
1
AEA33
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...