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Maintenance
In order to ensure smooth operation: check the func-
tion and tightness of the JSAV every year, or every
six months if operated with biologically produced
methane, see page 4 (Checking the function)
and page 3 (Tightness test).
▷ In the case of malfunctioning, check the
measuring unit and valve disc and replace if
necessary.
Selecting spare parts:
see free PartDetective DVD:
www.kromschroeder.com → Products →
DVD → PartDetective, (D/GB).
Replacing spare parts:
see page 5 (Replacing the measuring unit),
see page 6 (Replacing the valve disc).
▷ After carrying out maintenance work or replacing
spare parts, check for tightness and function,
see page 3 (Tightness test) and page 4
(Checking the function).
Technical data
Gas type: natural gas, town gas, LPG (gaseous),
biologically produced methane (max. 0.02 %-by-
vol. H
S) or air.
2
The gas must be dry in all temperature conditions
and must not contain condensate.
Max. inlet presure p
u max.
Max. test pressure for testing the JSAV:
temporarily < 15 min. 6 bar (87 psig).
Max. test pressure for testing the impulse line:
temporarily < 15 min. 750 bar (10.8 psig).
Trip pressure p
set at the factory:
do
120 mbar (46.8 "WC).
Adjusting range for trip pressure p
4 (Replacing the spring), Spring table.
Accuracy group: AG 10.
Ambient temperature:
-15 to +60°C (5 to 140°F).
Connection for housing:
JSAV..F: flange to ISO 7005,
JSAV..A: ANSI flange.
Connection for impulse line: Rp ¼ (NPT ¼).
Housing: GGG 40.
Diaphragm: NBR,
valve seat: aluminium,
valve stem: stainless steel,
valve disc: aluminium with vulcanized NBR seal.
4 bar (58 psig).
, see page
do
Designed lifetime
The Pressure Equipment Directive (PED) and the
Energy Performance of Buildings Directive (EPBD)
demand regular checks on and maintenance of
heating systems in order to ensure a high level of
use in the long term, a clean method of operation
and safe function.
The service life on which the construction is based,
hereinafter referred to simply as the "designed
lifetime", is compiled from the relevant standards.
You can find further explanations in the applicable
rules and regulations and on the afecor website
(www.afecor.org).
This information on the designed lifetime is based on
using the product in accordance with these operat-
ing instructions.
The product must be serviced at regular intervals.
Once the specified designed lifetime has been
reached, the safety-related functions must be
checked in accordance with the section entitled
"Maintenance".
If the product passes the aforementioned function
tests, you can continue to use it until the next sched-
uled maintenance operation. At this point, these tests
must be repeated.
If the product fails one of the aforementioned tests,
it must be replaced immediately.
This procedure applies to heating systems. For
thermoprocessing equipment, observe national
regulations.
Designed lifetime (based on date of manufacture) in
accordance with DIN EN 14382 Safety devices for
gas pressure regulating stations and installations:
Switching cycles
JSAV
Long-term use in the upper ambient temperature
range accelerates the ageing of the elastomer ma-
terials and reduces the service life (please contact
manufacturer).
GB-7
Designed lifetime
Time [years]
–
15
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