Refco ENVIRO-DUO Mode D'emploi page 17

Instruction Manual ENVIRO-DUO
g. In order to gain maximum recovery speed, a hose with
inner diameter bigger than 4 mm and shorter than 1.5 m
is recommended.
h. While recovering large amounts of liquid, use the
Push/Pull Mode.
I. After recovering, make sure there is no refrigerant left
in the unit. Read the Purge Operation carefully. Liquid
refrigerant remaining in the unit may be expanded and
damage the components.
j. If the unit is to be stored or not used for any length of time,
we recommend that it be completely evacuated of any
residual refrigerant and purged with dry nitrogen.
k.
A connection hose with check valve is recommended, it
can prevent refrigerant loss.
l. The intake port is equipped with filter screen;
please wash it frequently to keep it clean.
m. If it is difficult to start the unit, please turn the Switch
two rounds to balance the internal pressure and make
it easier to start the unit.
n. The Low Pressure Gauge shows the pressure of the
intake port of the compressor and the High Pressure
Gauge shows the pressure of the outlet port.
o. After Using, please turn the knob to "0" position.
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