Midea MSE-09CR - MSE-09 CR & MSE-09 HR Pressure Data

Service manual
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8.8 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.