Manual Operation Without Power Supply - bürkert POSITIONER 1067 Bedienungsanleitung

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4 OPERATION

4.6 Manual operation without power supply

The solenoid valves integrated in the positioner can be manually operated without a power supply by
using rotary knobs. These rotary knobs (red) are accessible when the bonnet of the unit is opened. They
are located immediately behind the electrical terminals. Two rotary knobs are provided on the type for
single-acting actuator (Fig. 38).
Fig. 38 Manual operation
Preconditions for manual operation using the rotary knobs.
- The power supply of the unit must not be connected under any circumstances.
- The pneumatic connections and the pressure supply must be present.
Settings
All rotary knobs are in position 0 (normal position):
Drive is vented.
In this case, in the design for double-acting actuating drives, the chamber connected to terminal A1 is
vented and the chamber connected to terminal A2 is supplied with air.
All rotary knobs are in position 1:
Drive is supplied with air.
In this case, in the design for double-acting actuating drives, the chamber connected to terminal A1 is
supplied with air and the chamber connected to terminal A2 is vented.
Caution!: All rotary knobs must be returned to the 0 position before connecting the power supply to
the positioner.
POSITIONER 1067
E-36-