Connection To The Compressed Air Supply - Duerkopp Adler 744-122 Installation Instructions Manual

6. Connection to the compressed air supply

For a fault-free operation of the pneumatic controls
observance of the following instructions and a
supply of water-free, lubricated compressed air is
essential.
Operating Pressure and Air Consumption
Operating pressure = 6 bar
Air consumption of the sewing unit
1)
approx.9,0 Nl per work cycle
approx.60 Nl per minute
1)
Nl = air quantity by normal atmospheric pressure
At the time of maximum air consumption a
minimum pressure below 5 bar is not
allowable.
Therefore the indicator on the pressure guage 2
must be checked when the sewing unit is in
operation.
If the compressed air pressure drop is too great
then a higher compressor output and compressed
air lines with greater diameters are to be used.
Behind the filter 5 cleaned compressed air is
released for use as blower air for cleaning machine
parts and blowing out sewing pieces.
Oil particles remaining in the blower air lead to
malfunctions and soiling of the sewing pieces.
Set the operating pressure of 6 bar by turning the
setting wheel 1 on the pressure regulator.
Turn to the left = Pressure reduction
Turn to the right = Pressure increase
8
Seating Pressure of the Material Guide Rail
Depending on the material to be sewn the seating
pressure for the material guide rail should be set
between 2 and 3 bar with the pressure regulator 3.
The adjustable pressure can be seen at the
manometer 4.
Connecting the Maintenance Unit
Customer-supplied material is used for the
connection to the compressed air lines.
Connection accessories, order no. 0797 003031,
can be supplied on request.
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