Elster J48HL Quick Start Manual Download Page 2

 

 J48HL: Commissioning Instructions

OPERATING INSTRUCTIONS

 

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. 

 
 
 

 

FITTING REGULATOR INTO PIPEWORK (A) 

1.

 

The unit should not be installed in a corrosive environment. 

2.

 

The ambient temperature (surface temperature) should be within the limits stated on the 
regulator catalogue. 

3.

 

Check the maximum allowable pressure on the regulator nameplate against the 
installation specification. 

4.

 

Remove the plastic protection plugs from inlet and outlet (and breather if applicable). 

5.

 

Ensure that installation pipework is thoroughly clean. 

6.

 

The direction of gas flow must be the same as the arrow(s) on the regulator body. 

7.

 

Install the regulator into pipework using a jointing compound approved to national standards

INSTALLATION OF VENT LINE (B) IF REQUIRED 

8.

 

Remove the plastic protection plug. 

9.

 

Connect the vent line (1/4" connection), 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. 

INSTALLATION OF EXTERNAL IMPULSE LINE (C) IF REQUIRED 

10.

 

Remove the plastic protection plug. 

11.

 

Connect the impulse line (1/8” connection), using a jointing compound approved to 
national standards, and lead to a point downstream not less than five times the nominal 
pipe diameter from the outlet. 

FOR PRE - SET REGULATORS 

12.

 

Turn off downstream valves. 

13.

 

Slowly turn on inlet supply. 

14.

 

Commission downstream appliance(s). 

SETTING OF OUTLET PRESSURE (D) 

15.

 

Turn off downstream valves. 

16.

 

Remove the top cap. 

17.

 

Insert a flat bladed screwdriver into the slot in the end of the spring adjusting screw. 

18.

 

Turn anticlockwise to reduce pressure on the loading spring. 

19.

 

Slowly turn on inlet supply. 

20.

 

Increase loading on the spring by turning the spring adjusting screw clockwise until the 
required outlet pressure, plus approximately 2.5mbar, is obtained. 

21.

 

Commission downstream appliance(s). 

22.

 

Trim the outlet pressure of the regulator, if necessary, when normal working flow rates 
have been achieved. 

23.

 

Replace the top cap (and seal if necessary). 

IF REQUIRED OUTLET PRESSURE CANNOT BE ACHIEVED WITH SPRING FITTED. (E) & (F).

24.

 

Choose a loading spring from the catalogue that will give the required outlet pressure range.

25.

 

Turn spring adjusting screw anticlockwise (to reduce loading on spring). 

26.

 

Carefully lift protruding end of locking lever just clear of adjusting bush (1), whilst in this 
position turn (octagon shaped) adjusting bush assembly anticlockwise until disengaged 
(2). The adjusting bush assembly can then be removed from the top cover. 

27.

 

Remove the loading spring. 

28.

 

Insert the new spring - take the label from the spares kit bag and stick it below the 
nameplate of the regulator. 

29.

 

Screw top spring holder anticlockwise to within 10mm of underside of adjusting bush. 

30.

 

Position underside of top spring holder on to loading spring. 

31.

 

Align slots in top spring holder with splines in top cover and push adjusting bush 
assembly into top cover as far as possible. 

32.

 

Turn adjusting bush assembly clockwise until locking lever snaps into any of the three 
locking castellations in the top cover. 

33.

 

Adjust the outlet pressure, as described above, until the required setting is found. 

34.

 

Replace the top cap (and seal if necessary). 

Warning! 

Incorrect installation, adjustment, modification, operation and maintenance may 

cause injury or damage. 
Read instructions before use. This control must be installed in accordance with the rules in force. 

Summary of Contents for J48HL

Page 1: ...J48HL Gas Pressure Regulator Commissioning Instructions General Arrangement Parts List Maintenance Instructions For J48HL Regulator 2 This product is discontinued ...

Page 2: ...a flat bladed screwdriver into the slot in the end of the spring adjusting screw 18 Turn anticlockwise to reduce pressure on the loading spring 19 Slowly turn on inlet supply 20 Increase loading on the spring by turning the spring adjusting screw clockwise until the required outlet pressure plus approximately 2 5mbar is obtained 21 Commission downstream appliance s 22 Trim the outlet pressure of t...

Page 3: ...3 J48HL Regulator General Arrangement 20 19 21 Spring Adjustment Pre October 2000 1 5 4 3 2 6 10 9 8 7 14 44 11 13 12 15 16 31 30 27 28 29 26 25 22 23 24 47 46 18 45 43 17 ...

Page 4: ...806 105 1 J4806 105 1 18 O RING SEAL JO200032 4475 Ï 1 JO200032 4475 Ï 1 19 ADJUSTING BUSH Old Design J4806 100 1 J4806 100 1 20 TOP SPRING HOLDER Course Thread J4806 098 1 J4806 098 1 21 SPRING ADJUSTING SCREW Course Thread J4806 097 1 J4806 097 1 22 SPRING LOCATION WASHER J4806 057 1 J4806 057 1 23 TOP DIAPHRAGM PLATE J4806 055 1 J4806 055 1 24 DIAPHRAGM SPACER J4806 052 1 J4806 052 1 25 SCREW J...

Page 5: ... Ï 1 JO200032 4475 Ï 1 JO200032 4475 Ï 1 19 ADJUSTING BUSH Old Design J4806 100 1 J4806 100 1 J4806 100 1 20 TOP SPRING HOLDER Course Thread J4806 098 1 J4806 098 1 J4806 098 1 21 SPRING ADJUSTING SCREW Course Thread J4806 097 1 J4806 097 1 J4806 097 1 22 SPRING LOCATION WASHER J9812 022 1 J9812 022 1 J4809 053 1 23 TOP DIAPHRAGM PLATE J9812 024 1 J9812 024 1 J4809 051 1 24 DIAPHRAGM SPACER J4808 ...

Page 6: ...ocking lever 17 just above adjusting bush 45 whilst in this position turn octagon shaped adjusting bush assembly 19 anticlockwise until disengaged The adjusting bush 45 can then be removed from the top cover 14 4 Remove the loading spring 13 from the top cover 14 5 Lift keyhole end of locking lever 17 over sloping peg in adjusting bush 45 and slide forward until disengaged from spring adjusting sc...

Page 7: ...over threaded end of valve spindle 2 until it rests against shoulder of spindle 2 Assemble valve disc 5 onto valve disc holder 4 with bead uppermost 3 Replace valve disc assembly 4 5 over threaded end of valve spindle 2 with chamfer around centre facing downward 4 Load valve spindle assembly 2 through bottom plug opening in body 3 This will ease assembly of valve spacer 6 and secondary diaphragm 5...

Page 8: ... spring location washer 22 NOTE If adjusting bush assembly 45 has been dismantled follow procedure if it has been left assembled then proceed to instruction number 26 22 Slide O ring seal 15 over slotted end of spring adjusting screw 46 into second groove i e groove nearest thread 23 Replace washer 44 over slotted end of spring adjusting screw 46 and slide down until it sits on shoulder of adjusti...

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