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Germany
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Elster Jeavons
Elster GmbH
Elster American Meter
Tollgate Business Park, Beaconside
Steinern Str. 19 - 21
2221 Industrial Road
Stafford, Staffordshire ST16 3HS
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.jeavonsltd.co.uk www.elster-instromet.com
www.elster-meterservices.com
[email protected] [email protected]
C483EN01
A25.1.2008
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J48: 2½” – 6” Commissioning Instructions
IF THE REQUIRED OUTLET PRESSURE CAN NOT BE ACHIEVED WITH
THE SPRING FITTED.
1.
Choose a loading spring from the catalogue that will give the required outlet
pressure range.
For L.P. 65mm and 80mm units: See Fig. 7.
2.
Remove top cap.
3.
Fully unscrew and remove the spring holder.
4.
Remove loading spring.
5.
Insert new loading spring.
6.
Screw spring holder back in place ensuring that spigot is located in loading
spring.
7.
Adjust the outlet pressure, as described earlier, until the required setting is
achieved.
8.
Replace top cap.
For H.P. 50mm and 80mm & L.P. 100mm and 150mm units: See Fig. 8.
9.
Remove top cap.
10.
Slacken locknut on spring adjusting stem.
11.
Turn spring adjuster anticlockwise to reduce loading on spring.
12.
Unscrew spring adjusting bush.
13.
Remove top spring holder and loading spring.
14.
Insert new loading spring.
15.
Place top spring holder over spring ensuring that spigot is located in loading
spring.
16.
Screw spring adjusting bush into top cover making sure that the end of the stem
is located in the recess in the top spring holder.
17.
Adjust the outlet pressure, as described earlier, until the required setting is
achieved.
18.
Tighten locknut.
19.
Replace top cap.
For H.P. 100mm and 150mm units: See Fig. 9.
20.
Remove top cap.
21.
Turn spring adjusting nut anticlockwise to reduce loading on spring.
22.
Remove 8 hexagon head screws that secure top cover to top diaphragm case.
Carefully lift off top cover assembly and gasket.
23.
Remove loading spring.
24.
Install new loading spring over spring location washer in centre of diaphragm.
25.
Replace gasket and top cover assembly and secure with 8 hexagon head
screws.
26.
Adjust the outlet pressure, as described on earlier, until the required setting is
found.
27.
Replace top cap.
Fig. 6
Fig. 7
Fig. 9
Fig. 8
