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1. Product Description
The DÜRKOPP ADLER 669 is a single-needle double lockstitch
free-arm sewing machine featuring a lower feed, a needle feed and an
alternating foot-upper feed.
Depending on the subclass, it can also come with a thread trimmer,
second stitch length and automatic bartacking.
The maximum stitch length is either 6 mm or 9 mm, depending on the
sewing equipment.
The needle thickness is between 100 150 Nm.
·
It is equipped with a large horizontal looper hook.
·
The hook cover has a diameter of 48 mm.
·
There is a maximum clearance of 20 mm under the sewing feet
when the feet are raised.
·
The remaining thread has a length of about 10 mm, depending on
the thread cutting process.
·
The lower feed can be easily deactivated or converted for other
purposes such as edge work.
·
A safety clutch prevents the hook from being displaced or damaged
if the thread gets jammed in the shuttle track.
·
The machine features automatic wick lubrication and a viewing
window in the arm for watching the machine and hook lubrication.
·
All subclasses, excluding those classes without a thread trimmer,
are equipped with a six-way button
An additional pull-down button, within reach of the operator, can
optionally be assigned one of the six different functions.
·
There is also an integrated bobbin w inder.
2. Designated Use
The class 669 machine is a sewing machine head designed for sewing
light to medium-heavy material. Such material is generally made of
textile fibres, but it may also be leather. It is used in the clothing
industry and for domestic and motor-vehicle upholstery.
This sewing machine can also be used to produce technical seams. In
such a case, the operator must assess the possible dangers which
may arise (preferably in conjunction with DÜRKOPP ADLER AG).
Such applications are relatively unusual and varied so that no single
set of criteria can cover them all. The outcome of this assessment may
require appropriate safety measures to be taken.
Generally, only dry material may be s ewn with this sewing machine
head. The material may be no thicker than 10 mm when compressed
by the lowered sewing feet. The material should not contain any hard
objects. If hard objects are present, the machine must be operated with
protective eye wear. We currently do not have such protective eye
wear available for delivery.
The seam is produced with textile-fibre sewing thread, with size
gauges up to 15/3 NeB (cotton), 15/3 Nm (synthetic) or 15/4 N m
(covered yarn).
Before using any other thread, you must assess the dangers
associated with their use and take appropriate safety measures when
necessary.
GB
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Durkopp Adler 669 User Manual - German - 36 pages

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