Samson 2357-3 Mounting And Operating Instructions page 39

Removing the set point spring
1. Put the regulator out of operation (see
the 'Decommissioning' section).
2. Remove the device from the pipeline
3. Undo the lock nut (11).
4. Completely relieve the tension from the
set point spring (8) by turning the set
point adjuster (10) counterclockwise ().
5. Undo the screws (14).
6. Remove the body cover (9), seal (4.1)
and spring plate (7).
7. Take out the set point spring (8) and
operating bellows (3).
EB 2559 EN
Mounting the set point spring
1. Insert new set point spring (8) for the re-
quired set point range together with the
operating bellows (3) into the valve body
(1).
2. Replace the seal (4.1), spring plate (7)
and body cover (9).
3. Fasten the housing cover with the screws
(14). Observe the specified tightening
torques (see 'Tightening torques' in An-
nex).
4. Turn the set point adjuster (10) clockwise
() up to the point where the springs
tension can be slightly felt. If necessary,
pre-adjust the new set point (see 'Adjust-
ing the set point' in the 'Operation' sec-
tion).
5. Install the regulator into the pipeline.
6. Put the regulator back into operation (see
the 'Start-up' section).
Note
Change the nameplate and material number
after changing the set point range.
Servicing
9-5