DURKOPP ADLER LP 2971, Instruction Manual

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5
GB
1 Product description
The Dürkopp Adler LP 2971, LP 2974 is a special sewing machine for
universal use.
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It is a double lockstitch post bed sewing machine .
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It has a two step feed. A lower wheel feeder and a driven roller
presser feed in two steps, a needle feed feeds in the first step only.
In single and double needle machines, the first step represents 30%
of the total stitch length.
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The machine is either single needle or double needle unit with
automatic functions such as thread trimming, automatic
backtacking, automatic foot lifting, or without them.
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The machine is equipped with a large two part vertical hook.
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Maximum foot lift is 12 mm.
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The residual thread length after thread trimming is about 15 mm.
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The hook is protected with a safety clutch against the
disarrangement of the adjusted position at the blocking of the
thread which interfered with its way.
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The throat plate has replaceable inserts with the stitch hole
dimension difference, which are optional in dependence on the
needle number.
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The machine has automatic wick lubrication from the central oil tank
with a visual check of the oil level by oil level indicator in the
machine arm. The part of the oil with which the hook is lubricated is
devaluated. The other part of the lubrication oil is returned to the
central tank by a pump.
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Integrated bobbin winder.
2 Designated use
The class LP 2971, LP 2974 is designated for sewing shoe, leather,
and upholstery sewing. In general, the material sewn is leather (natural
or artificial). It is possible to use it for shoe fabrics too.
The equipment for light, medium or heavy sewing is mounted on the
machine as an option.
It is possible to sew dry material only which may not be thicker than
7 mm when pressed down with a roller presser. The material may not
contain hard objects, as the machine is not equipped with an eye
guard. This machine may be operated in dry rooms and by a trained
person only who is aware of the risks described in this instruction.
This special sewing machine may be set up and operated only
in dry, well-maintained premises. If the sewing machine is used in
premises which are not dry and well-maintained it may be
necessary to take further precautions (which should be agreed in
advance - see EN 60204-31:1999).
As manufacturers of industrial sewing machines we proceed on the
assumption that personnel who work on our products will have
received training at least sufficient to acquaint them with all normal
operations and with any hazards which these may involve.