Refco ENVIRO-DUO Mode D'emploi page 22

English
Vapor valve
Tank
6. When the reading on the electric scale is not changing
or changing very slowly, it means that the liquid recovery
is finished, it's time for gas recovery. (The hoses
to be re-connected and please follow the Purge Operation
to purge the gas refrigerant.)
7. Close the gas valve on the refrigerant tank and then turn
the power off.
8. Close all the valves and disconnect all the external hoses.
Connect the hoses according to the Recovery Operation
to do the gas refrigerant recovery.
9. PURGE
WARNING!
When the reading on the electric scale shows
that the refrigerant in the tank reaches 80%
capacity, please turn the power off and close
the valves on the tank.
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Instruction Manual ENVIRO-DUO
80% O.F.P.
float cable
Input
Liquid valve
Scale
Output
Vapor
Filter
Liquid
HVAC System
need