EVACUATION PROCEDURES(AIR PURGE)

Connect the refrigerant pipes (both the liquid and gas pipes) between the indoor and the outdoor units.

Remove the service port cap of the stop valve on the side of the outdoor unit gas pipe.(The stop valve will not work in its initial state fresh out of the factory (totally closed with cap on))

When vacuuming

Connect the gage manifold valve and the vacuum pump to the service port of the stop valve on the liquid pipe side of the outdoor unit.

Run the vacuum pump for more than 15 minutes and at this time confirm that the pressure gage indicates –0.1 Mpa.

Check the vacuum with the gage manifold valve, then close the gage manifold valve, and stop the vacuum pump.

Leave it as it is for one or two minutes. Make sure the pointer of the gage manifold valve remains in the same position.

Remove the gage manifold valve quickly from the service port of the stop valve

After refrigerant pipes are connected and evacuated, fully open all stop valves on gas and liquid pipe sides. Operating without fully opening lowers the performance and causes trouble.

Pipe length :

Pipe length

7m maximum

exceeding 7m

No gas charge

Charge the prescribed

is needed

amount of gas

Tighten the cap to the service port to obtain the initial status.

Retighten the cap.

Leak test

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Mitsubishi Electronics MSH-18NV, MSH-07NV, MSH-12NV, MSH-09NV, MSH-24NV Evacuation Proceduresair Purge, When vacuuming

MSH-07NV, MSH-09NV, MSH-24NV, MSH-12NV, MSH-18NV specifications

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