Product Description; Designated Use - Duerkopp Adler 171 Instruction Manual

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Product description

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Designated use

The DÜRKOPP ADLER classes 171 and 173 are single needle or twin
needle flat bed double-chainstitch crossline sewing machines with
bottom feed for line seams according to stitch type 401.
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Class 171 with skipping bottom feed.
·
Class 173 with skipping bottom feed and intermittent top puller
feed.
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The hooks are arranged cross-line to the sewing direction.
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Max. sewing speed 7000 stitches/min according to the subclass.
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The feed lengths of feed-dog and puller are differentiably
adjustable by separate setting wheels. When switching over to
condensed stitches the feed length of the puller is automatically
shortened correspondingly.
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The looper thread quantity is automatically adapted to the stitch
length, i.e. always optimum stitch formation.
Class 171 — 173 is a sewing machine head determined for processing
light to medium-weight material, i.e. fabrics made of textile fibers or
leather. Such sewing materials are used in the clothing industry and for
the production of home upholstery.
Furthermore, this sewing machine head can also sew so-called
technical seams. However, in this case the user has to estimate the
possible risks (preferably in cooperation with DÜRKOPP ADLER AG)
because on the one hand such fields of application are comparatively
rare and on the other hand there is an immense variety of application
possibilities. According to the result of this estimation suitable safety
measures may have to be taken.
Generally only dry fabrics must be processed on this sewing machine
head. The material must not be thicker than 4 mm when compressed
by the lowered sewing feet. It must not include any hard objects
because otherwise the sewing machine head would be allowed to be
operated with an additional eye protection only. Such an eye protection
cannot be delivered at present.
In general the seam is produced with sewing threads made of textile
fibers up to 70/3 Nm (core thread). If other threads are to be used, it is
indispensable also in this case to consider the possible risks and to
take corresponding safety measures, if necessary.
The sewing machine must only be installed and operated in dry and
well-kept rooms. In case it is operated in other rooms which are not dry
and well-kept further measures can become necessary which have to
be agreed upon (see EN 60204-31: 1999).
We as manufacturers of industrial sewing machines take it for granted
that at least semi-skilled operators are working with our products so
that we can assume that all usual operations and their risks are known
to them.
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