Page 1
Fig. 1
Fig. 2
Fig. 3
Fig. 4
J125
INSTALLATION CONDITIONS
Body pressure range: 0
Temperature range:
OPERATING INSTRUCTIONS
•
•
•
•
•
•
FITTING REGULATOR INTO PIPEWORK
1.
2.
3.
4.
5.
6.
7.
8.
9.
INSTALLATION OF VE
1.
2.
3.
s
INSTALLATION OF IMPULSE LINE
1.
2.
FOR PRE
1.
2.
3.
Warning!
force.
Commissioning Instructions
1½” and 2”
- 8.6 Bar
-20ºC to +70 ºC
Ensure that this product is suitable for the chosen application.
Installation, adjustment and maintenance by authorised, trained personnel only.
When being fitted to an appliance, refer to the appliance manufacturers instructions.
For units not fitted with OPSS, ensure that the installation provides adequate
protection to prevent over pressurisation.
Traffic, wind and earthquake loadings should be considered when specifying the
installation.
The unit should be protected from the decomposition of unstable fluids.
Incorrect installation, adjustment, modification, operation and maintenance may
cause injury or damage.
Read the instructions before use. This control must be installed in accordance with the rules in
The unit should not be installed in a corrosive environment.
The ambient temperature (surface temperature) should be within the limits
stated on the regulator catalogue.
Check the maximum allowable pressure on the regulator nameplate
against the installation specification.
Remove the protection plugs from inlet and outlet ports.
Ensure that installation pipework is thoroughly clean.
The direction of gas flow must be the same as the arrows on the regulator
body. See Fig. 1.
Install the regulator into pipework using jointing compound approved to
national standards.
In order to fit the regulator into confined spaces it may be necessary to rotate
the diaphragm case. This is achieved by slacking off the three set screws,
rotating the diaphragm case, and then re-tightening the set screws evenly.
See Fig. 2.
For units with no OPSS fitted it is advised that a slam shut device is fitted to
protect downstream equipment.
NT LINE.
Remove clip and vent screen from regulator top cover.
Connect the vent line (2"), using a jointing compound approved to national
standards, and lead to atmosphere in accordance with national standards.
Ensure that no water can penetrate vent pipeline. See Fig. 3.
If the regulator is fitted with an internal relief valve, ensure that the vent line i
of sufficient diameter to carry gas vented by the relief valve to a safe outside
location. Reference to any national standard.
Remove the plastic protection plug.
Connect the impulse line (½"), using a jointing compound approved to
national standards, and lead to a point downstream not less than fifteen
times the nominal pipe diameter from the outlet. See Fig. 4.
-SET UNITS ONLY.
Turn off downstream valves.
Slowly turn on inlet supply.
If safety shut-off device is not fitted,
go to instruction 6.
Page 2
J125: 1½” and 2” Commissioning Instructions
4. If safety shut-off device is fitted unscrew reset spindle end cap and firmly
5.
6.
WARNING: DO NOT UNDER ANY CIRCUMSTANCES WEDGE OPEN SAFETY
SHUT
TO FUNCTION IN ADVERSE PRESSURE CONDITIONS.
SETTING THE REGULATOR & SAFETY
1.
2.
3.
4.
5.
off device cover (If UPSS only go to
6. Insert a flat bladed screwdriver into one of the partial slots on the OPSS
7.
8.
insert a pozidriv screw driver (No.2 point) into UPSS adjusting
9.
) to reduce loading on UPSS spring, making sure screw
10.
11.
cock by unscrewing reset spindle end cap and
pulling firmly. Hold in this position until the outlet pipework is fully
screw reset
12.
spring until the required outlet pressure, plus approximately 1"wg (2.5mbar)
is obtained. (This is an allowance for the regulator being set with zero
If UPSS
13.
14. Apply external pressure source to a suitable point on the outlet pipework.
Note: If pressure test point on underside of slam shut unit is used as external
source point, care must be taken to ensure pressures are
across
restricted orifice within test point.
15.
PSS device trips off.
16.
Fig. 5
Fig. 6
Fig. 7
pull. Hold in this position until the outlet pipework is fully pressurized, then
release reset spindle end cap gently. See Fig. 5.
Re-screw reset spindle end cap into body, ensuring not to jam reset spindle.
Commission downstream appliances.
-OFF RESET END CAP AS THIS WILL NOT ALLOW THE SAFETY DEVICE(S)
OPSS = Over Pressure Safety Shut-off.
UPSS = Under Pressure Safety Shut-off.
Turn off inlet and outlet valve(s).
Remove top cap from regulator cover.
Insert an 1¼" A/F socket over the top of the adjustment screw.
Turn anticlockwise (-) to reduce loading on regulator spring to minimum. See
Fig. 6 (If no safety devices are fitted go to instruction 10).
Remove top cap from safety shut-
instruction 8).
spring holder. See Fig. 7.
Turn clockwise (+) to increase loading on OPSS spring to maximum.
If UPSS fitted,
screw in bottom spring holder. See Fig. 8.
Turn anticlockwise (-
head does not protrude from the bottom spring holder.
Slowly open inlet valve(s).
If safety device fitted, re-
SHUT OFF DEVICE PRESSURES.
pressurised, then release reset spindle end cap gently. Respindle end cap into body. See Fig. 5.
Turn regulator adjustment screw clockwise (+) to increase the loading on the
flowrate).
only go to instruction 20, if no safety device go to instruction 27.
Block vent valve opening to prevent relief valve from operating.
Increase pressure to that required for OPSS trip-off.
Slowly turn OPSS spring holder anticlockwise (-) until O
See Fig. 7.
Reduce external pressure source to level set in instruction 12.
equalised
Page 3
Fig. 8
Fig. 9
Fig. 10
17. Re-cock OPSS device by unscrewing reset spindle end cap and firmly pull.
18.
19.
NOTE: OPSS device is now set.
20.
21.
22.
23.
il UPSS device trips off. See
24.
25.
26.
NOTE
27.
28.
29.
30.
WARNING: DO NOT UNDER ANY CIRCUMSTANCES WEDGE OP
SHUT
TO FUNCTION IN ADVERSE PRESSURE CONDITIONS.
IF THE REQUIRED REGULATOR OUTLET PRESSURE CANNOT BE
ACHIEVED WITH THE SPRING FITTED
1.
2.
3.
4.
5.
6.
7.
NOTE: Outlet pressure is now set.
J125: 1½” and 2” Commissioning Instructions
Hold in this position until the outlet pipework is fully pressurised, then
release reset spindle end cap gently. Re-screw reset spindle end cap into
body. See Fig. 9.
Slowly increase external pressure to check for OPSS trip-off. Trim adjustment
if necessary and repeat instructions 16 - 18.
Remove external pressure source.
Close inlet valves.
Reduce inlet pressure to approximately 140mbar (2 PSI).
Reduce outlet pressure by introducing a slow controlled bleed until the
required UPSS trip-off pressure is obtained and close bleed.
Slowly turn UPSS adjusting screw clockwise (+) unt
Fig. 8.
Slowly open inlet valve to regain inlet pressure up to approximately 2 PSI
(140mbar), then close inlet valve.
Re-cock UPSS device by unscrewing reset spindle end cap and firmly pull.
Hold in this position until the outlet pipework is fully pressurized, then
release reset spindle end cap gently. Re-screw reset spindle end cap into
body. See Fig. 9.
Slowly reduce outlet pressure to check for UPSS trip-off. Trim adjustment if
necessary and repeat instructions 24 – 26.
: UPSS device is now set.
Commission installations.
Trim the regulator outlet pressure if necessary once normal flow rates have
been achieved.
Unblock vent opening.
Replace all top caps (seal if necessary).
-OFF RESET END CAP AS THIS WILL NOT ALLOW THE SAFETY DEVICE(S)
EN SAFETY
Remove top cap from regulator cover.
Choose a loading spring from catalogue that will give the required outlet
pressure range.
Fully unscrew and remove the adjustment screw, See Fig. 11.
Remove spring and replace with new one. See Fig. 10.
Screw adjustment screw back in place.
Adjust the outlet pressure as described previously.
Replace the top cap (seal if necessary).
Page 4
Subject to change without prior notice All rights reserved
Subject to change without prior notice All rights reserved
IF THE REQUIRED TRIP-OFF PRESSURES CANNOT BE ACHIEVED WITH
THE SPRINGS FITTED
A)
1.
2.
3.
4.
5.
6.
7.
NOTE: OPSS pressure is now set
B) UPSS spring.
1.
2.
3
4.
5.
6.
7.
8.
9.
10.
11.
12.
Fig. 11
Fig. 12
Fig. 13
J125: 1½” and 2” Commissioning Instructions
.
OPSS spring
Remove top cap from the safety shut-off device cover.
Choose an OPSS spring from the catalogue that will give the required
pressure range.
Fully unscrew and remove top spring holder. See Fig. 12.
Remove spring and replace with new one. See Fig. 10.
Screw spring holder back in place, ensuring that castellated spigot is
uppermost in chimney. See Fig. 12.
Adjust the trip-off pressure as described previously.
Replace the top cap (seal if necessary).
Remove top cap from the safety shut-off device cover.
Choose an UPSS spring from the catalogue that will give the required
pressure range.
. Fully unscrew and remove top spring holder. See Fig. 12.
Remove OPSS spring (or spacer tube if UPSS only).
Remove bottom spring holder and UPSS top spring holder.
Remove UPSS spring and replace with new one. See Fig. 13.
Replace UPSS spring holder, ensuring that spigot locates in UPSS spring.
Replace bottom spring holder locating three webs into slots in bottom of
cover, ensuring not to disturb UPSS spring and UPSS spring holder.
Replace OPSS spring (or spacer tube if UPSS only).
Screw top spring holder back in place, ensuring that castellated spigot is
uppermost in chimney. See Fig. 12. (If UPSS only ensure that spacer tube is
firmly clamped).
Adjust the trip-off pressure as described previously.
Replace the top cap (seal if necessary).
NOTE: UPSS pressure is now set.
Contacts
United Kingdom Germany USA
Elster Jeavons Elster GmbH Elster American Meter
Paton Drive, Tollgate Business Park, Steinern Str. 19 - 21 2221 Industrial Road
Beaconside, Stafford, Staffs ST16 3EF 55252 Mainz-Kastel Nebraska City, NE 68410-6889
T +44 1785 275200 T +49 6134 605 0 T +1 402 873 8200
F +44 1785 275305 F +49 6134 605 223 F +1 402 873 7616
www.elster-instromet.com www.elster-instromet.com www.elster-meterservices.com
info.jeavons@gb.elster.com info@elster.com
C1252EN02
A2.7.2012
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