Krom Schroder JSAV 50, JSAV 100 Operating Instructions Manual
F
NL
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E
03250885
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 50 – 00
© 2016 Elster GmbH · Edition 09.16
Translation from the German
Contents
Safety shut-off valve
JSAV 50 – 00 ..........................
Contents ..............................
Safety.................................
Checking the usage .....................
Type code .............................2
Part designations ........................ 2
Type label.............................. 2
Installation ............................
Connecting the impulse line ..............
Connecting the breather line .............
Tightness test ..........................
Checking the function ...................4
Checking the trip pressure p
Checking the tightness of the valve disc.......4
Setting the trip pressure p
Replacing the spring ....................4
Resetting..............................5
Replacing the measuring unit.............5
Replacing the valve disc .................6
Maintenance ........................... 7
Accessories ...........................7
Technical data .........................7
Designed lifetime ........................8
Logistics ..............................8
Certification ...........................8
Declaration of conformity ..................8
Eurasian Customs Union ..................8
Contact ...............................8
.............4
do
.............4
do
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. This unit must be installed and commissioned
in accordance with the regulations and standards
in force. These instructions can also be found at
www.docuthek.com.
Explanation of symbols
• , , , ... = Action
▷ = Instruction
Liability
We will not be held liable for damage resulting from
non-observance of the instructions and non-compliant 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.
Changes to edition 0.5
The following chapters have been changed:
– Installation
– Setting the trip pressure p
– Certification
do
GB
GB-1
F
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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 page 7 (Technical data).
Any other use is considered as non-compliant.
Type code
Code Description
JSAV Safety shut-off valve
50 – 00
T T-product
F
GB
A
50 Inlet pressure p
/ Over-pressure shut-off p
u max.
-0 No pressure test point
Part designations
2
3
4
Nominal size
Flange to ISO 7005
ANSI flange
= 5 bar (72.5psig)
1
10
7
5
8
6
Type label
Max. inlet pressure, upper trip pressure pdo, ambient
temperature: see type label.
D-49018 Osnabrück, Germany
P
max:
JSAV
u
Wh
:
o
p
:
do
AGo: +/- 10%
TS=
Installation
do
9
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. Risk of external leakage.
– Max. inlet pressure p
– Installation in the vertical or horizontal position,
never upside down.
5bar (72.5 psig).
u max.
Measuring unit
Screw plug with position indicator
Connection for impulse line (closed with plastic
plug)
4 Inlet
5 Outlet
6 Arrow of direction of flow
7 Reset
8 Arrow of direction of reset
9 Reset lever
0 Connection for breather line (closed with plastic
plug)
The housing must not be in contact with ma-
sonry. Minimum clearance 20 mm (0.78"). Ensure
that there is sufficient space for installation and
adjustment.
Remove the adhesive foil from the inlet and outlet
on the JSAV.
Insert seal between pipe and unit.
▷ Note direction of flow.
GB-2
F
NL
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▷
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.
▷ 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
_>
VSBV
5DN
Connecting the impulse line
▷
Remove the plastic plug in the “impulse line” connection and connect an Rp ¼ (¼NPT) pipe. We
recommend a pipe diameter of 12 x 1.5 mm.
Install the impulse line and seal with an approved
sealing material.
▷
Ensure that there is sufficient tube length for the
impulse line.
Tightness test
WARNING
– An additional tightness test must be carried
out on the JSAV at all joints which have been
opened for maintenance work or replacement
of spare parts.
▷ Ensure that the valve seat of the JSAV is open,
see page 5 (Resetting).
Block the pipeline at the inlet and outlet.
▷ Note max. test pressure.
JSAV inlet and outlet: max. 6 bar (87psig),
impulse line: max. 750 mbar (10.9 psig).
Slowly apply test pressure.
0
p
do
p
d
3
GB
Rp ¼ (¼ NPT)
0
Connecting the breather line
▷
Remove the plastic plug in the “breather line”
connection and connect an Rp ¼ (¼NPT) pipe.
We recommend a pipe diameter of 12 x 1.5 mm.
Install the breather line and seal with approved
sealing material.
▷ Route the breather line to a safe area.
Rp ¼
(¼ NPT)
0
N2 = max. 7,5 bar (109 psig)
4
N2 = max. 750 mbar
GB-3
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