Operation; Manual Operation; Manual Valve Operation - AUMA SAEx 07.2 Manual

Operation

7. Operation
7.1.

Manual operation

7.1.1.

Manual valve operation

Procedure
Overload protection for
manual operation
50
SAEx 07.2 SAEx 16.2/SAREx 07.2
For purposes of setting and commissioning, in case of motor or power failure, the
actuator may be operated manually. Manual operation is engaged by an internal
change-over mechanism.
Manual operation is automatically disengaged when motor is started again. The
handwheel does not rotate during motor 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.
1. Press push button.
2. Turn handwheel in desired direction.
Figure 55:
The closing direction is marked on the handwheel.
Table 28: Handwheel marking (examples)
→ For valve closing, turn handwheel in direction of the arrowhead.
clockwise closing
Drive shaft (valve) turns clockwise in direction
CLOSE.
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.
SAREx 16.2 Control unit - electromechanical
ACExC 01.2 Intrusive Modbus RTU
counterclockwise closing
Drive shaft (valve) turns counterclockwise
in direction CLOSE.