Gree GMV5 Series Service Manual page 205

Open all valves in
order that the
vacuum pump
extracts air through
all the valves
Oil checking
valve
Low pressure
check valve
Step 15: Fill refrigerant.
Before filling refrigerant, check its manufacturer, package, and print information. Besides, check
refrigerant pressure and quality against the saturation pressure / temperature list.
1. Measure and check the pressure of the entire refrigerant product against the saturation pressure /
temperature list. Verify temperature parameter. If the difference between the actual temperature and the
parameter value is 3° C or more, the refrige rant quality is unsatisfactory.
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL
Liquid
pipe
If the
maintenance
work involves
multiple parts,
extract air of the
balance pipe
independently
Balance
pipe
202
Gas pipe