GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL
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the regulator valve does not increase.
8.2.2.2. Precautions:
(1) The gas pipe and liquid pipe must be vacuumized at the same time.
(2) Turn off the valve before powering off the vacuum pump.
(3) Keep vacuuming for 2 hours. The vacuum meets the requirement if the pressure displayed by
the vacuum gauge does not increase.
(4) The units parallel connected to the module and oil-equalizing pipe also need to be vacuumized.
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