Gree U-MATCH GFH09K3CI, Service Manual

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A/A DC INVERTER U-MATCH AIR CONDITIONERS INSTALLATION
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‹ Use the hexagonal socket spanner to rotate the element of liquid valve for 1/4 turns and use the screwdriver to
prop up the element of gas valve to discharge the gas.
‹ Discharge the gas for 15 seconds, until refrigerant gas appears. The, immediately close the 1-way valve and
tighten the valve cap.
‹ Open the element of liquid valve and gas valve to full (See Fig. 3-1-4).
Figure 3-1-4
‹ Tighten the valve cap and then use soap water or leakage detector to check the connection between outdoor
unit and pipe for any leakage.
Caution
：
If possible, it is best to discharge the air out of the machine from the valve by using vacuum pump. To establish
vacuum by using vacuum pump, please operate as follows:
‹ Take out the nut cover of the inlet for refrigerant.
‹ Connect the tube of the vacuum watch with the vacuum pump, having the low-pressure end linking to the inlet
for refrigerant. (As shown in Figure 3-1-5)
Figure 3-1-5
‹ Starting the vacuum pump, when the indicator turns to-1 bar, closing the low pressure handle and stopping
vacuumize. Keep for 15 minutes, ensuring the pressure of the vacuum watch remains.
‹ Take out the valve cover of the gas valve together with the liquid valve.
‹ Loosing the cord of liquid valve until the pressure rise to 0 bar.
‹ Dismantle the tube from the cover of the inlet for refrigerant then, tighten the cover.
‹
Loose the valve cord of the gas valve as well as the liquid valve entirely.