5
SOFT START VALVE (APR)
ONE’s soft start valve is completely new compared to others
currently on the market. The pressure is increased gradually
whatever the flow rate of the utilities.
When the solenoid valve is powered on (if there is an electric soft
start valve) or you turn the manual V3V valve to ON (if there is
a non-electric soft start valve), the downstream pressure starts to
increase.
When it reaches about 30-40% of the set value, the valve opens
completely and the pressure rises to the set value.
The pressure increase can be regulated with precision on the
knob on the front.
1-
Turn in the
“Slow”
direction to increase the ramp time. If you
rotate as far as it will go, this cuts off the flow of air completely,
and the pressure does not increase.
2-
Turn in the
“Quick”
direction to decrease the time it takes to
open the valve. If you rotate as far as it will go, the valve will
open almost immediately, deactivating the progressive actuator
function.
After regulation, press the knob to lock it.
PRESSURE SWITCH
The pressure switch has a switching contact, which means you
can have a normally-open signal or a normally-close signal. It
is also connected to the
NC
and
NO
LEDs which come on if the
actual pressure is less or greater than the set pressure, respectively.
The LEDs only come on if an electric charge (max 0.5 A) is
connected to them, as shown in the diagram (see subsection on
LEDs).
Regulation is by means of the knurled knob. Turn towards “
+
”
to increase the pressure and vice versa.
Proceed as follows to make a correct setting.
-
Turn the knob towards “
-
“ as far as it will go.
-
Set on the pressure regulator the value at which you wish the
pressure switch to activate and read it on the gauge. The
NO
LED is on
and the
NC
LED is off.
-
Turn the knob towards “
+
” until switching takes place.
-
Press the knob to lock it.
-
Reset the desired value for normal operation on the pressure
regulator.
SECURITY KNOB
Pull outwards to remove the knob from the APR/pressure switch
on the unit. Insert the security knob and regulate the APR/ pressure
switch. Then press the handle firmly to lock it in position. If the
APR/pressure switch needs to be reset, remove the security knob
by forcing it laterally with a screwdriver (A).
A
High switching pressure
Low switching pressure
0 10 20 30 40 50 60 70 80 90 100110120130140
bar
psi
0
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20
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40
50
60
70
80
90
100
110
120
130
140
bar
psi
0
1
2
3
4
5
6
7
8
9
10
0
1
2
3
4
5
6
7
8
9
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Summary of Contents for ONE
Page 1: ...USE AND MAINTENANCE ...