TATSUNO
EUROPE
a.s.,
www.tatsuno
‐
europe.com
162
6.1.5.
DEPRESSURIZING
OF
LPG
DISPENSER
Before
any
service
intervention
in
the
LPG
hydraulic
module
(e.g.,
replacement
and/or
cleaning
of
the
inlet
strainer,
repair
or
replacement
of
the
LPG
meter,
dispensing
hose,
dispensing
nozzle
...),
it
is
necessary
to
"depressurize"
it,
i.e.,
to
drain
the
medium
from
the
pressure
module.
The
manufacturer
recommends
the
following
procedure:
1.
2.
Close
the
LPG
liquid
phase
inlet
ball
valve
(1).
Connect
nozzle
(3)
to
the
auxiliary
connector
for
return
LPG
outlet
(4)
and
open
auxiliary
ball
valve
(5)
located
behind
the
check
valve
(6).
Open
the
LPG
vapour
phase
outlet
ball
valve
(2).
3.
4.
Start
fuelling
by
pressing
START
button
(ON/OFF
switch).
Error
51
stops
the
dispenser
(low
differential
pressure).
Repeat
fuelling
for
the
second
nozzle
(E51).
Hang
up
both
nozzles
and
close
auxiliary
ball
valve
(5)
and
the
LPG
vapour
phase
outlet
ball
valve
(2).
Switch
off
power
supply
of
the
dispenser
at
main
station
switchboard
and
unscrew
the
check
valve
(6)
5.
Drain
the
rest
of
medium
from
LPG
module
by
slow
opening
of
auxiliary
ball
valve
(5).
