Refrigeration Maintenance
85
9. Observe the vacuum gauge.
The system pressure should remain below
2000 microns for 5 minutes.
If the pressure does not hold check for leaks
(if a leak is suspected) or continue evacuation
(if system is not dry).
10. Restart the pump, open the Evacuation Station
valve nearest the pump (V1) and repeat steps
6, 8, and 9 as required until system pressure
remains below 2000 microns for 5 minutes.
11. When system pressure remains below 2000
microns for 5 minutes, restart the pump, open
the Evacuation Station valve nearest the pump
and back seat the suction service valve while
the evacuation pump is still operating.
Replace the valve cap, re-close the Evacuation
Station valve nearest the pump (V1) and stop
the evacuation pump.
Do not exercise the service valves with the unit in
a deep vacuum unless the evacuation pump is
operating.
1
2
3
4
5
6
7
9
8
AGA171
1.
V-4
6.
To AC Power
2.
V-3
7.
Two Stage Pump
3.
V-2
8.
Calibration Standard
4.
Thermistor
9.
Vacuum or Micron Gauge
5.
V-1
Figure 57: Multi-Temp Evacuation and Charging (Two Zone Unit Shown Other Units Similar)
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 ...