MegaLife ARV Series, Руководство по обслуживанию, Страница: 125 / 172

MegaLife ARV OUTDOOR UNIT
–
ARV 6 ALL DC INVERTER T1 50&60HZ Service Manual
125
※
System will respond this function only when the outdoor environment temperature [ Tao ]
≤
-5
℃
1.8 Vacuum Pumping
For after-sale : If a system had a refrigerant leakage, should find out the
leakage point and re-welding first, and there should be no any refrigerant in the
system, so we can choose the Vacuum pumping function (Choose the
function according “ Part 3 – 4.2.4 [C] Function Setting “ –
【
C….5
】
) to do
Vacuum
1.
Connect the vacuum pump and vacuum pressure gauge as above diagram
2.
Through Master unit to set vacuum pumping function
3.
Then outdoor units keep standby state and all EXVs keep ON state, the
sub-cooling solenoid valve alternating switch for 5 minutes.
Liquid stop
va lve
G a s dtop
va lves
No refrigera nt in indoor side
No refrigera nt in outdoor unit
Va cuum
Pum
p
one -wa y
va lve
Va cuum Sta te
Va c uum
pre ssure ga uge
1 2 3
1~3: va lves