7
.
Close
the
gas
valve
of
the
refrigerant
tank
and
then
turn
the
power
off
.
6
.
When
the
showing
of
electric
scale
is
not
changing
or
changing
very
slowly
,
means
that
the
liquid
recovery
is
finished
,
and
it
'
s
time
for
gas
recovery
.
it
(
The
hoses
need
to
be
re
-
connected
and
please
follow
the
Purge
Operation to
the
gas
refrigerant
.)
purge
8
.
Close
all
the
valves
and
disconnect
all
the
external
hoses
.
Connect
the
hoses
to
the
Recovery
Operation
to
do
the
gas
refrigerant
recovery
.
according
9
.
Purge.
1.
Shut off by High Pressure
Protection
,
red light ON
2.
Low Pressure Protection
,
greed
light ON
(
recovery not finished
)
3.
80
%
O
.
F
.
P cable bot well
connected
1.
Lower the pressure of the unit
2.
Check if the hoses are well
connected
3.
Check the connection
4.
Turn the switch two rounds and
stop at position
"
1
"
1.
External pressure is too high
2.
Motor failure or other
component damage
1.
Turn the Switch 2 rounds and
point to position
"
1
",
and then
restart
2.
Factory service is needed
1.
High Pressure Protection caused
by mis
-
operation shuts the unit off
like
：
Outlet valve closed
,
refrigerant
tank valve closed
2.
Motor Overload Protection shut
the motor off
3.
80
%
Over Filling Protection
,
red light ON
4.
Recovery finished
,
green light ON
5.
Overload during liquid recovery
process
,
light flashes and off
1.
Read carefully the Operation
Manual and follow the instructions
while operating
2.
Give the motor some time to restart
3.
Follow the Purge Operation to do
the Purging
4.
Turn the Switch 2 rounds and point
to position
"
1
",
restart the unit
5.
Turn the Switch 2 rounds and stop
position
"
1
"
while recovering liquid
refrigerant
1.
The pressure of the refrigerant
tank is too high
2.
Piston ring of the compressor is
damaged
1.
Cool the tank down can help
bringing down the pressure
2.
Factory service is needed
1.
Hose connection loosened
2.
Leakage of the unit
1.
Tighten the connecting hoses
2.
Factory service is needed
9
