Gree GMV-Y36WL/A-T, Руководство по обслуживанию

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GREE hotovoltaic Multi VRF for North America
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5.1. 2 Operation procedure and notices for Vacuum drying
(1)
1Operation procedure
1) Before vacuum-pumping, please confirm that the cut-off valve for gas pipe and liquid pipe
is at off status;
2) Use charging conduct pipe to connect the governing value and vacuum heat pump to the
detection joint of gas valve and liquid valve;
3) After vacuum-pumping for 4h, check whether the vacuum degree is reached to -0.1MPa or
above; If not, there may be gas leakage. Please perform the leakage inspection again. If
there’s no gas leakage, please vacuum pump for another 2h.
4)
If the required vaccum degree can’t be satisfied after vacuum-pumping for two times, there
are water inside the pipeline. Please drain out the water by the method of vaccum damage.
The detailed method: charge 0.05MPa nitrogen into the pipeline, vacuum pump for 2h and
then keep the cacuum for 1h. If -
0.1 MPa vaccum degree still can’t be reached, repeat this
operation unitl the water is drained out completely.
(2)
After the vacuum pump is finished, turn off the valve of governing valve and stop vacuum
pump and keep it for 1h. Please confirm that the pressure of governing valve hasn’t been
increased.
1) Vacuum pump for the gas pipe and liquid valve at the same time;
2) When turn off the vacuum pump to stop vacuum-pumping, please turn off the valve at first
and then de-energize the vacuum pump;
3)
Keep the vacuum pump for 2h and confirm that the pressure of vacuum meter hasn’t been
increased.
5.2 Fill and charge refrigerant
5.2.1 Operation procedure for adding refrigerant
(1)
Put the charging tank on the weightometer, record the reading and then calculate the data
after charging refrigerant;
(2)
Use charging conduct pipe to connect the double-ended manometer with governing valve
and liquid-charging tank to the detection head of gas valve and liquid valve. Before
connection, please release some refrigerant and then drain out the air inside the charging