IM-P358-26
CH Issue 1
22
4. Commissioning
Actuators supplied already fitted to control valves would be supplied already commissioned.
However, should it be necessary to commission an actuator, the following procedure should
be adopted.
4.1 Preliminary checks - All actuators
1.
Check that the actuator voltage corresponds to that required.
2.
Ensure the wiring corresponds to that outlined in Section 3.6.
Ensure the assembly of the valve and actuator has been carried out according to the
instructions in Section 3.2.
4.2 2-port valves
1.
Using the handwheel extend the actuator until the valve plug stops against the seat, then
extend so that the coupling piece is observed to compress (
24
). Marking rings are located
along the length of the coupling shaft (
25
). The correct compression should be set to the
lower marking ring (higher marking ring for the retract position on the 3-port valve). This
compression gives the correct closing force to the valve when shut.
2.
With the actuator in this position the 'Extend' limit switch
(
27
) must be set.
3.
Unlock the set screw, use the other screw to move the cam down until the switch contact
'breaks' and tighten the set screw. For 3-port valves now go to Section 4.3.
4.
The lower stroke indicator (
28
)
should then be butted against the bottom of the spindle nut
anti-rotation plate and a distance of the valve 1.5 mm (1 mm for AEL55_) measured
from the top of the spindle nut anti-rotation plate. The top stroke indicator should then be
positioned at this point.
5.
Using the handwheel retract the spindle so that the top of the anti-rotation plate butts with
the bottom of the top stroke indicator.
6.
With the actuator in this position the 'Retract' limit switch
(
26
)
must be set.
7.
Unlock the set screw, use the other screw to move the cam up until the switch contact
'breaks' and tighten the set screw.
8.
The actuator can now be run electrically to check the limit switch settings. Power the actuator
to both ends ensuring that when closed 1 ring is compressed and that the travel is valve
1.5 mm (1 mm for AEL55_). The motor must switch off at either end.
Note:
For VMD input signal actuators, commissioning is complete after the limit switches
have been set.
4.3 3-port valves
As steps 1, 2 and 3, Section 4.2.
4.
The lower stroke indicator (
28
) should then be butted against the bottom of the spindle nut
anti-rotation plate.
5.
Using the handwheel retract the actuator until the plug stops against the seat, then retract
so that the coupling piece (
24
) is observed to compress. Marking rings are located along
the coupling shaft
(
25
). The correct compression should be set to the higher marking ring.
This compression gives the correct closing force to the valve when shut. Then follow steps
2 and 3 as defined in Section 4.2 for the retract switch. The higher stroke indicator (
29
)
should then be butted against the top of the spindle nut anti-rotation plate. The actuator
can now be run electrically to check the limit switch settings. Power the actuator to both
ends ensuring that when stopped at either end 1 ring is compressed and that the travel is
valve 3 mm (2 mm for AEL55_). The motor must switch off at either end.
Summary of Contents for AEL5 Series
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