Idiomas disponibles
Idiomas disponibles
Enolish
12.
WATER PRESSURE VALVE
(water-cooled models only,
S3)
Sel the waler pressure regulaling valve with the
knob
['ll
to
operale with the pressure-temperalure values indicaled
in
the 'FACTORY SETTINGS' seclion
at th€
end
of
this
manual.
main
comDaents
1 Knob
3
O-Ring
2
Cup
spring
4
Bellows sensor
Check the
water pressure regulaling valve regularly
as
impurities
in
the waler could cause
it
to maltunction.
This valve
is
frtted
with a
knob [1]
for adjusting the set-point
oDentino
pinciple
The pressure
signal
adves
at
the bellorrs
[4]
which,
via
lhe main valve
rod,
opens and doses the valve
The resislanc€
of
the spring opposing the operation
of
the bellows, can
be
regulated with
the
knob
[1]
The difierenlial pressure
required
to
open
the valve
can
therefore
be
adjusled
12.1.1.
Water pressure regulating valve maintenance
(water-cooled models only, $3)
The
valve may
caplure impurities To
remove
them
proceed
as
folloYrrs:
.
set
the
knob [1]
to the
minimum pressure value ("1" on the
scale);
.
make
sure
lhe
bellovvs unit [4]
is not pressurised;
.
pul a screwdriver through
the
slot and remove the retaining
cup spring
[2]
from its
seat;
.
open the valve;
.
rinso
dirty parts:
.
replace
any
wom
Grings
[3],
it
necessary;
.
grease the cylindrical surface with non acidic
grease;
.
lubricate
screvys and
lie-rods before reassembling the valve.
4
1
A
Do not
open
the bellows unit
when
the system
is
pressurised
as this could
cause
it to
permanently
deform.
1
a
13.
GENERAL OPERATING AND MAINTENANCE REGULATIONS
13.1.
OPERATION
Do
not switch otf the dryer
if
there is
no
compressed air flow.
The
dryer
svrilches
on and off automatically.
The
number
of starts and stops depends
on
lhe flow
of
compressed
air, its
temperalure and ambient temperature.
As explained
in
the installation chapter (S7
),
the control board automatically switches
off
the refrigeranl compressor when lhere
is
no
air tlo\
r.
ln
this
cas€,
the refrigerant compressor will run occasionally and for brief periods to compensate for the dispersion of heal between the thermal mass
and
the surrounding
ambient air.
The
dryer
is
therefore
ready
to
Hoilever,
it is
perfeclly safe
ln
thls
ca9e, remember
to
dry
compressed air
as
soon
as
the flow
is
reslarted.
suritch
ofl the dryer at nigtfl or
at
weekends when the
air
compressor is nol running
lo
start the dryer
at
least
10-15
mlnutes before the air compressor
15
Capítulos
