Krom Schroder JSAV 100 Operating Instructions Manual

03250885

F

NL

I

E

TR CZ PL RUS H

Edition 10.12

D GB F NL I E

DK S N P GR

➔ www.docuthek.com

Operating instructions

Safety shut-off valve
JSAV 50 – 100

Translation from the German

© 2012 Elster GmbH

Contents

Safety shut-off valve JSAV 50 – 100 ........1

Contents ..............................1

Safety.................................1

Checking the usage .....................2

Type code .............................2

Part designations ........................2

Type label.............................. 2

Installation ............................2

Connecting the impulse line ..............3

Tightness test ..........................3

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

Technical data .........................7

Designed lifetime ........................ 7

Declaration of conformity ................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 opera-
tor. 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

• , 1 , 2 , 3 ... = Action

▷ = Instruction

Liability

We will not be held liable for damage resulting from
non-observance of the instructions and non-com-
pliant 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 trans-
port damage immediately.

Storage

Store the product in a dry place. Ambient tempera-
ture: see Technical data.

Changes to edition 08.12

The following chapters have been changed:
– Declaration of conformity
– JSAV 25 – 40, see operating instructions

for safety shut-off valves JSAV 25 – 40 →
www.docuthek.com → Elster Kromschröder →
Products → 02 Pressure regulators → Safety
shut-off valves JSAV → Kind of document: Op-
erating instructions → JSAV 25 – 40

GB

GB-1

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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 – 100 Nominal size
F
A

GB

40 Inlet pressure p
/1 Trip pressure p

-0 Without pressure test point

Part designations

2

3

4

1 Measuring unit
2 Breather screw plug
3 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, upper trip pressure pdo, ambient
temperature: see type label.

D-49018 Osnabrück, Germany

JSAV

Flange to ISO 7005

ANSI flange

= 4 bar (58 psig)

u max.

1

7

5

8

6

P

max:

u

Wh

:

o

p

:

do

AGo: +/- 10%

9

Installation

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

do

lever. Risk of external leakage.
– Max. inlet pressure p
– Installation in the vertical or horizontal position,

4bar (58 psig).

u max.

never upside down.

1 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.

2 Insert seal between pipe and unit.
3 Remove the adhesive foil from the inlet and outlet

on the JSAV.

▷ Note direction of flow.

▷

We recommend installing a manual valve AKT25

in the pipe leading to the safety relief valve

VSBV25, so that the annual function check of
the safety shut-off valve JSAV can be carried out
without having to remove it.

TS=

GB-2

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▷ 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 blind plug and connect an Rp¼
(¼ NPT) impulse line.

1 Install the impulse line and seal with an approved

sealing material.
Ensure that there is sufficient tube length for the

▷

impulse line.

Rp ¼ (¼ NPT)

0

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).

1 Block the pipeline at the inlet and outlet.

▷ Note max. test pressure.

JSAV inlet and outlet: max. 6 bar (87psig),

impulse line: max. 750 mbar (10.9 psig).

2 Slowly apply test pressure.

0

p

do

p

d

3

GB

N2 = max. 6 bar

4

N2 = max. 750 mbar

GB-3