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9.5.2 Version with manual ad-
juster
Disassembly
1. Put the regulator out of operation (see
the 'Decommissioning' chapter).
2. To completely relieve the tension from the
set point springs (8), turn the manual ad-
juster (19) counterclockwise () until you
hear it a clicking noise.
3. Unscrew the control lines (11, 12).
4. Remove the regulator from the pipeline.
5. Remove the bolts (14).
6. Lift off the actuator housing (7).
7. Pull the valve spring (8.1), if installed,
out of the body.
8. Unscrew the assembly, consisting of op-
erating diaphragm (6) together the dia-
phragm plates, set point spring (10) and
support (17), from the spindle (18) by
turning the assembly counterclockwise.
Pull it out the bottom section of the valve
body.
EB 3124 EN
Installation
1. Slide the new assembly over the spindle
(18) into the actuator housing.
2. Turn the assembly clockwise () by one
turn to screw it onto the spindle (18).
Lift the diaphragm plate to check wheth-
er the thread of the assembly has en-
gaged. Turn the assembly one turn fur-
ther, if necessary.
3. Insert the valve spring (8.1), if installed,
into the body.
4. Place on the actuator housing (7) with
actuator stem (6.1) and set point springs
and tighten the screws (14) evenly. Ob-
serve the specified tightening torques
(see section 'Tightening torques' in the
Appendix).
5. Install the regulator into the pipeline.
6. Fasten the control lines (11, 12). Ob-
serve the specified tightening torques
(see section 'Tightening torques' in the
Appendix).
7. Put the regulator back into operation (see
the 'Start-up' chapter).
Servicing
9-7
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