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Operation of safety lever control
In order to ensure that the air medium flows through the valve, the differential piston valve
must be actuated by using the push-button item 19 simultaneously with the valve lever item
20. After this, it is only necessary to hold the valve lever item 20 firmly for the operation of
the machine. If this lever is released, the valve immediately shuts off. Both of these actuation
mechanisms are arranged offset at 90°, in order to prevent a simultaneous unintentional
actuation of the two mechanisms at once and thus avoiding an unintentional start-up of the
machine.
Operation of twist throttle with sensor block
The sensor block is put between the machine and the shut-off device (e.g. lever throttle, ball
cock, twist throttle) (see fig. 4).
In order to ensure that the air flows through the sensor block and that the machine is
correctly supplied, the differential piston valve (sensor block) must be actuated using the
push-button "A" (marked with a yellow spot), after the opening of the shut-off device.
If the shut-off device is closed, or the air supply is interrupted, the sensor block (differential
piston valve) immediately closes it off.
An air admission, even when the shut-off device is open, does not result in a start-up of the
machine (flow- through in the sensor block closed).
Fig.3
Fig.4
Fig.5
air supply line (air
connection)
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