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Vacuum pumping
The drain hose can't
be fluctuant
Slant the drain hose slightly downw-ards. The drain hose can‘t be curved, raised and fluctuant, etc.
The drain hose
can't be fluctuant
The water outlet
can't be fluctuant
liquid valve
gas valve
charging vent
refrigerant
vacuum pump
nut of refrigerant
charging vent
piezometer
valve cap
Lo
Hi
inner hexagon
spanner
open
close