6. Operation
6.1. Manual operation
The handwheel allows actuator operation even in case of power failure.
However, handwheel operation is only provided for occasional manual valve operation.
Manual operation is automatically disengaged when motor is started again. The
handwheel does not rotate during motor operation.
6.1.1. Manual valve operation
Damage at the manual change-over mechanism/motor coupling due to faulty
operation!
→
Engage manual operation only during motor standstill.
→
Do NOT use extensions as lever for operation.
Procedure
1. Press push button.
2. Turn handwheel in desired direction.
Figure 31:
➥
The closing direction is marked on the handwheel.
Table 22: Hanwheel marking (examples)
→ For valve closing, turn handwheel in direction of the arrowhead.
counterclockwise closing
clockwise closing
Drive shaft (valve) turns counterclockwise
in direction CLOSE.
Drive shaft (valve) turns clockwise in direction
CLOSE.
Overload protection for
manual operation
To protect the valve, an overload protection is available as option for manual
operation. If the torque applied at the handwheel exceeds a certain value (refer to
order-related technical data sheet), the shear pins will rupture and thus protect the
valve from damage.The handwheel can no longer transmit the torque (= handwheel
is spinning). Motor operation is still possible. In case of shear pin rupture due to
overload, imperatively replace the safety hub.
39
SAEx 07.2 – SAEx 16.2 / SAREx 07.2 – SAREx 16.2 Control unit: electronic (MWG)
ACExC 01.2 Non-Intrusive Profinet Operation
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