Krom Schroder JSAV Operating Instructions Manual
2.1.2 Edition 04.10
F
NL
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D GB F NL I E
TR CZ PL RUS H
DK S N P GR
➔ www.docuthek.com
Operating instructions
Safety shut-off valve JSAV
Translation from the German
© 2008 – 2010 Elster GmbH
Contents
Safety shut-off valve JSAV . . . . . . . . . . . . . . . 1
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Checking the usage . . . . . . . . . . . . . . . . . . . . . 2
Type code. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Part designations. . . . . . . . . . . . . . . . . . . . . . . . 2
Type label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting the impulse line . . . . . . . . . . . . . .
Tightness test. . . . . . . . . . . . . . . . . . . . . . . . . . 4
Checking the function . . . . . . . . . . . . . . . . . . . 4
Checking the switching pressure p
Checking the tightness of the valve disc. . . . . . . 4
Setting the switching pressure p
Replacing the spring . . . . . . . . . . . . . . . . . . . . 5
Resetting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Replacing the measuring unit. . . . . . . . . . . . . 6
Replacing the valve disc . . . . . . . . . . . . . . . . . 7
Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . 9
Service life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Declaration of conformity . . . . . . . . . . . . . . . 10
. . . . . . . . . 4
so
. . . . . . . . 5
so
Safety
Please read and keep in a safe place
Please read through these instructions
carefully before installing or operating. Following the installation, pass the instructions on to the
operator. These instructions can also be found at
www.docuthek.com.
Explanation of symbols
• , 1 , 2 , ... = Action
= Instruction
Liability
We will not be held liable for damages resulting
from non-observance of the instructions and noncompliant use.
Safety instructions
Information that is relevant for safety is indicated in
the instructions as follows:
DANGER
Indicates potentially fatal situations.
WARNING
Indicates possible danger to life and limb.
CAUTION
Indicates possible material damage.
All interventions may only be carried out by qualified
gas technicians. Electrical interventions may only be
carried out by qualified electricians.
Conversion, spare parts
All technical changes are prohibited. Only use OEM
spare parts.
Transport
On receipt of the product, check that the delivery is
complete (see Part designations). Report any transport damage immediately.
Storage
Store the product in a dry place. Ambient temperature: see Technical data.
GB
GB-1
F
NL
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Checking the usage
JSAV
Safety shut-off valve for securing downstream fittings
against excess gas pressure.
This function is only guaranteed when used within the
specified limits – see [Technical data – p.9].
Any other use is considered as non-compliant.
Type code
Code Description
JSAV Safety shut-off valve
25 – 100 Nominal size
R
N
GB
F
A
40 Inlet pressure p
0
Part designations
JSAV 25
Rp internal thread to ISO 7-1
NPT internal thread
Flange to ISO 7005
ANSI flange
= 4 bar (58 psig)
e max.
Without pressure test point
Screw plug at the inlet and outlet
3
4
1
2
6
5
7
JSAV 50 – 100
2
3
1
7
4
5
8
9
6
1 Measuring unit
2 Breather screw plug
Impulse line connection
4 Inlet
5 Outlet
6 Arrow of direction of flow
7 Reset
8 Arrow of direction of reset
9 Reset lever
Type label
Max. inlet pressure, switching pressure pso, ambient
temperature: see type label.
JSAV 25 – 40
D-49018 Osnabrück, Germany
JSAV
JSAV 40
4
5
8
1 Measuring unit
2 Breather screw plug
Reset cap
4 Impulse line connection
5 Inlet
6 Outlet
7 Arrow of direction of flow
8 Inlet p
9 Outlet p
measuring connection
e
measuring connection
a
D-49018 Osnabrück, Germany
Who:
:
P
3
1
2
JSAV 50 – 100
6
so
AGo: +/- 10%
Sitz:
D-49018 Osnabrück, Germany
JSAV
9
7
p
:
e
P
max:
u
Wh
:
o
P
:
so
AGo: +/- 10%
TS=
GB-2
F
NL
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Installation
21
CAUTION
Please observe the following to ensure that the
JSAV is not damaged during installation:
– Sealing material, cuttings and other impurities
must not be allowed to get into the housing.
– We recommend installing a filter upstream of the
JSAV, in order to protect it against impurities in
the pipe.
– The installation location must be dry. Do not
store or install the JSAV in the open air.
– Install the JSAV in the pipe free of mechanical
stress.
– Do not clamp the unit in a vice or use it as a
lever. On the JSAV..R, only secure the valve by
holding the octagon at the inlet or outlet with a
suitable spanner. Risk of external leakage.
– Max. inlet pressure p
– Installation in the vertical or horizontal position,
never upside down.
1 The housing must not be in contact with masonry.
Minimum clearance 20 mm (0.78"). Ensure that
there is sufficient space for installation and adjustment.
2 JSAV..R: seal pipe with approved sealing material.
JSAV..F: insert seal between pipe and unit.
Remove screw caps or adhesive foil from the inlet
and outlet on the JSAV.
Note direction of flow.
JSAV 25 – 40 JSAV 50 –100
We recommend installing a manual valve AKT25
in the pipe leading to the safety relief valve
VSBV25, so that the annual function check of
the safety shut-off valve JSAV can be carried out
without having to remove it.
4bar (58 psig).
e max.
To prevent the VSBV from being unintentionally
shut off, we recommend removing the manual
valve lever after commissioning and attaching
it to the pipe.
JSAV
Connecting the impulse line
JSAV 25 – 40
The connection flange is suitable for an impulse
line with a pipe diameter of 8 mm.
Push union
nut and
compression
fitting onto
the impulse
line.
3 4
On the JSAV..T, remove the blind plug and con-
nect an NPT
JSAV 50 – 100
Remove the blind plug and connect an Rp¼
(NPT ¼) impulse line.
JSAV
5 Install the impulse line and seal with an approved
sealing material.
Ensure that there is sufficient tube length for the
impulse line.
JSAV
1
/
8
impulse line.
_>
5DN
GB
GB-3
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