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Refrigeration Service Operations (Rev. 04/03)
108
7.
Operate the unit at least 30 minutes and then inspect the
oil level in the compressor. Add or remove oil if neces-
sary.
8.
Check the refrigerant charge and add refrigerant if
needed.
CONDENSER/RADIATOR COIL
Removal
1.
Remove the refrigerant charge.
2.
Remove the grille assembly.
3.
Drain engine coolant from the expansion tank and dis-
connect the coolant hoses from the condenser/radiator
coil.
4.
Unsolder the hot gas inlet tube and liquid refrigerant
line connections.
5.
Unbolt and remove the condenser/radiator coil
Installation
1.
Clean the tubes for soldering.
2.
Place the coil in the unit and install the mounting hard-
ware.
3.
Solder the inlet line and liquid line refrigerant connec-
tions.
4.
Pressurize the refrigeration system and test for leaks. If
no leaks are found, evacuate the system.
5.
Connect the coolant hoses to the radiator and refill the
expansion tank with 50/50 ethylene glycol/water solu-
tion.
6.
Recharge the unit with refrigerant and check the com-
pressor oil.
7.
Reinstall the front grille.
LIQUID LINE CHECK VALVE
REPLACEMENT
Removal
1.
Remove the refrigerant charge.
2.
Unsolder the lines and remove the check valve.
NOTE: Disassemble valve before unsoldering.
Installation
1.
Clean the tubes for soldering.
2.
Place the disassembled check valve in position. Arrow
on the valve body indicates the direction of refrigerant
flow through the valve.
3.
Solder the inlet and outlet connections. After the valve
cools, reassemble the valve.
4.
Pressurize the refrigeration system and test for leaks.
5.
If no leaks are found, evacuate the system.
6.
Recharge the unit with refrigerant and check the com-
pressor oil.
DEHYDRATOR (FILTER-DRIER)
Removal
1.
Pump down the refrigeration system and equalize the
pressure to slightly positive 1 to 2 psig (7 to 14 kPa).
2.
Disconnect the nuts at the end of the drier.
Hold the drier with a backup wrench on the hex behind
the flare fitting.
3.
Loosen the mounting hardware and remove the drier.
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...