GB-5
D
GB
F
NL
I
E
Setting the switching pressure p
so
1
Select the switching pressure p
so
according to
the outlet pressure p
a
of the pressure regulator.
20
0
40 60 80 100 140
180
220
260
300
340
50
100
150
200
250
300
350
400
450
500
pa [mbar]
p so
[mbar
]
VSBV
JSAV
2
Remove the breather screw plug.
Set the switching pressure p
so
.
+
–
+
–
JSAV 25 – 40
JSAV 50 –100
4
Reset the JSAV, see [Resetting – p. 5].
5
Check the required switching pressure p
so
again,
see [Checking the function – p. 4].
Replacing the spring
▷
▷
Various switching pressure ranges can be reached
by using different springs on the JSAV.
1
Choose a spring according to the required switch-
ing pressure range.
Spring table
Type
Switching pressure
p
so
Marking
Order No.
[mbar]
[psig]
JS
AV
2
5
–
40
18 – 60
0.26 – 0.9
black
0 308 906 8
50 – 80 0.73 – 1.16 orange 0 308 906 9
60 – 110
0.9 – 1.6
red
0 308 907 0
100 – 210* 1.45 – 3.05*
dark
green
0 308 907 1
200 – 350 2.9 – 5.08
yellow
0 308 907 2
280 – 500 4.06 – 7.25
white
0 308 907 3
JS
AV
5
0
–
10
0
35 – 70 0.51 – 1.02 light blue 0 308 906 3
60 – 170* 0.9 – 2.5
reddish
brown
0 308 906 4
120 – 220 1.74 – 3.2 crimson 0 308 906 5
190 – 400 2.8 – 5.8
orange/
yellow
0 308 906 6
300 – 550 4.35 – 8
orange/
green
0 308 906 7
* Standard spring
2
Remove the breather screw plug.
JSAV 25 – 40
3
4
JSAV 50 – 100
3
4
5
Insert new spring.
6
Follow the reverse procedure when reassembling.
7
Set the required switching pressure p
so
, see [Set-
ting the switching pressure pso – p. 5].
8
Screw in the breather screw plug.
9
After inserting the spring, take the spring’s label
from the packaging and stick it below the type
label on the JSAV.
10
Clearly mark the adjusted value of the switching
pressure p
so
on the sticker.
Resetting
▷
▷
Ensure that the impulse line is depressurized.
JSAV 25 – 40
1
Remove the breather screw plug.
2
Open the reset cap and pull it approx. 1 to 2 mm
(0.04 to 0.08") upwards. Pressure equalization
now takes place.
1–2mm
Hold the reset cap in this position until the cap
can be pulled further upwards easily following
pressure equalization.
4
Pull the reset cap upwards until the valve disc
clicks into place. The JSAV is now fully open.
klack
5
▷
▷
Once the cap has been screwed on, the green pin
in the reset cap must be right at the top.
6
Screw in the breather screw plug.
▷
▷
The JSAV is ready for operation.
