AUMA EQ 40 - 6 Commissioning; End Stops in Part-Turn Actuator

6. Commissioning
6.1. End stops in part-turn actuator
Figure 11: End stops
End stop OPEN
End stop CLOSED
The internal end stops limit the swing angle.They protect the valve during motor
operation and serve the purpose as limitation for manual operation via handwheel.
The swing angle (e.g. 90°) is specified on the name plate and adjustable by this
value within a range of ±15°.
End stop setting is generally performed by the valve manufacturer prior to installing
the valve into the pipework.
Exposed, rotating parts (discs/balls) at the valve!
Pinching and damage by valve or actuator.
→
End stops should be set by suitably qualified personnel only.
The sequence of setting, first end stop CLOSED setting then end stop OPEN setting
or vice versa, depends on the type of valve:
●
Recommendation for butterfly valves: Set end stop CLOSED first.
➭ page 16, End stop CLOSED: set
●
Recommendation for ball valves: Set end stop OPEN first.
➭ page 16, End stop OPEN: set
15
EQ 40 – EQ 150
EQ 300 – EQ 600 Commissioning