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Refrigeration Maintenance (Rev. 04/03)
97
11. If the vacuum level is acceptable, start the pump and
open valve V-1 to evacuate the pressure rise (5 min-
utes).
12. Close valve V-1 and stop the pump. Observe the micron
gauge to confirm that the system remains in a deep vac-
uum. Close valve V-4. The unit is ready to charge.
Unit Charging
NOTE: Refer to the diagram on the next page for the fol-
lowing discussion.
NOTE: Before charging, make sure that the refrigerant
lines from the gauge manifold to the refrigerant supply
bottle have been evacuated or purged.
1.
Back seat the suction service valve. The discharge and
receiver outlet valves remain open to port.
2.
Set the refrigerant supply bottle for liquid. Open the
gauge manifold hand valve, and charge liquid refriger-
ant until the system has the proper charge or until the
system will take no more liquid. The remainder of the
charge will be added as a liquid through the suction
service valve if more refrigerant is required.
3.
After the liquid refrigerant is added, close the gauge
manifold hand valve.
4.
Back seat (close) the receiver outlet valve. Back seat
the discharge service valve. Open the suction service
valve.
5.
Open the refrigerant supply valve for liquid. Open the
gauge manifold hand valve.
6.
Start and operate the unit with the thermostat set for
cool. Add liquid through the suction service valve until
the correct charge is attained. Make sure that the liquid
level does not rise above the sight glass. Refer to the
unit serial plate for the correct amount of charge.
7.
When the correct amount of charge has been added,
close the gauge manifold hand valve.
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...