Evacuation - Fisher FSIArt?100HFD Service Manual

7.8 Evacuation
Procedure:
1. Connect the vacuum pump to the charge set's centre hose.
2. Evacuation for approximately one hour.
Confirm that the gauge needle has moved toward ‐0.1 Mpa (‐76 cmHg) [vacuum of 4 mmHg or less].
3. Close the valve (Low side) on the charge set, turn off the vacuum pump, and confirm that the gauge needle
does not move (approximately 5 minutes after turning off the vacuum pump).
4. Disconnect the charge hose from the vacuum pump.
Vacuum pump oil, if the vacuum pump oil becomes dirty or depleted, replenish as needle.
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