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)
Содержание 002008
Страница 4: ...4 ...
Страница 25: ...Unit Description 25 Figure 3 Zone 1 Cool Zone 2 Cool and Zone 3 Cool Zone 3 Zone 2 Zone 1 AGA168 ...
Страница 27: ...Unit Description 27 Figure 4 Zone 1 Cool Zone 2 Cool and Zone 3 Heat Zone 3 Zone 2 Zone 1 AGA169 ...
Страница 30: ...Unit Description 30 Figure 9 Front View AJA920 ...
Страница 31: ...Unit Description 31 1 Access Panels 2 Defrost Damper Figure 10 Back View 1 2 ARA104 ...
Страница 114: ...Mechanical Diagnosis 114 ...
Страница 116: ...Electric Standby Diagnosis 116 ...
Страница 120: ...Remote Evaporator Specifications 120 ...
Страница 122: ...Remote Evaporator Maintenance Inspection Schedule 122 ...
Страница 128: ...Remote Evaporator Electrical Maintenance 128 ...
Страница 132: ...Remote Evaporator Refrigeration Service Operations 132 ...
Страница 134: ...Remote Evaporator Structural Maintenance 134 ...
Страница 136: ...Remote Evaporator System Diagnosis 136 ...
Страница 140: ...Index 140 ...
Страница 142: ......
Страница 143: ...143 Model 30 Schematic Diagram Page 1 of 2 ...
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Страница 151: ...151 Model 50 Wiring Diagram Page 1 of 5 ...
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