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SAI 07.2
SAI 16.2 / SARI 07.2
for use in nuclear power plants
10.3.2.
Set end position OPEN (white section)
10.4.
Signalling the end position via intermediate position switches
SARI 14.6
Commissioning (basic settings), for wiring diagrams TPA...-Y01
3.
Turn handwheel by approximately half a turn (overrun) in the opposite direction.
4.
Press down and turn setting spindle [1] with screw driver in direction of the
arrow and observe the pointer [2]: While a ratchet click is felt and heard, the
pointer [2] moves 90° every time.
5.
As soon as the pointer [2] is 90° from mark [3]: Continue turning slowly.
6.
As soon as the pointer [2] moves to mark [3]: Stop turning and release setting
spindle.
The end position CLOSED setting is complete.
7.
If you override the tripping point inadvertently (ratchet click is heard after the
pointer has snapped): Continue turning the setting spindle in the same direction
and repeat setting process.
1.
Engage manual operation.
2.
Turn handwheel counterclockwise until valve is open.
3.
Turn handwheel by approximately half a turn (overrun) in the opposite direction.
4.
Press down and turn setting spindle [4] with screw driver in direction of the
arrow and observe the pointer [5]: While a ratchet click is felt and heard, the
pointer [5] moves 90° every time.
5.
As soon as the pointer [5] is 90° from mark [6]: Continue turning slowly.
6.
As soon as the pointer [5] moves to mark [6]: Stop turning and release setting
spindle.
The end position OPEN setting is complete.
7.
If you override the tripping point inadvertently (ratchet click is heard after the
pointer has snapped): Continue turning the setting spindle in the same direction
and repeat setting process.
Actuators equipped with DUO limit switching are equipped with two intermediate
position switches. One intermediate position may be set for each running direction.
Figure 23: Setting elements for limit switching
Black section:
[1]
Setting spindle: Running direction CLOSE
[2]
Pointer: Running direction CLOSE
[3]
Mark: Intermediate position CLOSED is set
White section:
[4]
Setting spindle: Running direction OPEN
[5]
Pointer: Running direction OPEN
[6]
Mark: Intermediate position OPEN is set
29
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