Samson 41-73 Series, Монтаж и эксплуатация

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9-6 EB 2517 EN
Servicing
9.3.2 Replacing the set point
springs
Î
See Fig. 9-1
Removing the set point springs
1. Put the regulator out of operation (see
the 'Decommissioning' section).
2. Completely relieve the tension from the
set point springs (7) by turning the set
point adjuster (6) counterclockwise (

).
Stored energy in the set point springs can
cause components to move in an uncon-
trolled manner resulting in injury to hands or
fingers.
3. Unscrew the control line (17).
4. Remove the device from the pipeline
5. Remove the actuator (10) from the valve
(see section 9.3.1).
6. Unscrew the nuts (8.2) on the crossbeam.
Remove the crossbeam (8).
7. Loosen the hex socket screws (7.3) and
unscrew the nut (7.2) from the spigot of
the actuator bellows (5.1).
8. Remove the needle bearing with axial
disk (7.4), nut (7.2) and spring plate
(7.1).
9. Lift off the set point springs (7).
Mounting the set point springs
1. Place the set point springs (7) on the set
point adjuster (6).
WARNING ! WARNING !
2. Place the spring plate (7.1), nut (7.2)
and needle bearing with axial disk (7.4)
onto the spigot of the actuator bellows
(5.1).
3. DN 15 to 50 without balancing bellows:
Use an Allen key (4 mm) to hold the bel -
lows extension stationary and screw on
the nut (7.2). Tighten the cap screw (7.3)
to fix the nut in position. Observe the
specified tightening torques (see 'Tighten
-
ing torques' in Annex).
− DN 65 to 100 without balancing bel -
lows and DN 15 to 100 with balancing
bellows:
Screw on nut (7.2) and fix it in position
with the cap screw (7.3). Observe the
specified tightening torques (see 'Tighten -
ing torques' in Annex).
4. Place the crossbeam (8) on the pillars
(8.1) and fasten with the nuts (8.2). Ob-
serve the specified tightening torques
(see 'Tightening torques' in Annex).
5. Mount the actuator (10) (see sec-
tion 9.3.1). Observe the specified tight -
ening torques (see 'Tightening torques' in
Annex).
6. Install the regulator into the pipeline.
7. Screw on the control line (17). Observe
the specified tightening torques (see
'Tightening torques' in Annex).
8. Put the regulator back into operation (see
the 'Start-up' section).