Duerkopp Adler 887 User manual

Spezialnähmaschine
Betriebsanleitung
887
Postfach 17 03 51, D-33703 Bielefeld • Potsdamer Straße 190, D-33719 Bielefeld
Telefon +49 (0) 521 / 9 25-00 • Telefax +49 (0) 521 / 9 25 24 35 • www.duerkopp-adler.com
Ausgabe / Edition: Änderungsindex Teile-Nr./Part.-No.:
Printed in Federal Republic of Germany 0791 887740
01/2013 Rev. index: 01.0
Instruction manual

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Eigentum der Dürkopp Adler AG und urheberrechtlich geschützt. Jede, auch auszugsweise Wiederverwendung
dieser Inhalte ist ohne vorheriges schriftliches Einverständnis der Dürkopp Adler AG verboten.
All rights reserved.
Property of Dürkopp Adler AG and copyrighted. Reproduction or publication of the content in any manner, even
in extracts, without prior written permission of Dürkopp Adler AG, is prohibited.
Copyright © Dürkopp Adler AG - 2008

Foreword
This instruction manual is intended to help the user to become familiar
with the machine and take advantage of its application possibilities in
accordance with the recommendations.
The instruction manual contains important information on how to
operate the machine securely, properly and economically. Observation
of the instructions eliminates danger, reduces costs for repair and
down-times, and increases the reliability and life of the machine.
The instruction manual is intended to complement existing national
accident prevention and environment protection regulations.
The instruction manual must always be available at the machine/sewing
unit.
The instruction manual must be read and applied by any person that is
authorized to work on the machine/sewing unit. This means:
–Operation, including equipping, troubleshooting during the work
cycle, removing of fabric waste,
–Service (maintenance, inspection, repair) and/or
–Transport.
The user also has to assure that only authorized personnel work on the
machine.
The user is obliged to check the machine at least once per shift for
apparent damages and to immediatly report any changes (including the
performance in service), which impair the safety.
The user company must ensure that the machine is only operated in
perfect working order.
Never remove or disable any safety devices.
If safety devices need to be removed for equipping, repairing or
maintaining, the safety devices must be remounted directly after
completion of the maintenance and repair work.
Unauthorized modification of the machine rules out liability of the
manufacturer for damage resulting from this.
Observe all safety and danger recommendations on the machine/unit!
The yellow-and-black striped surfaces designate permanend danger
areas, eg danger of squashing, cutting, shearing or collision.
Besides the recommendations in this instruction manual also observe
the general safety and accident prevention regulations!

General safety instructions
The non-observance of the following safety instructions can cause
bodily injuries or damages to the machine.
1. The machine must only be commissioned in full knowledge of the
instruction book and operated by persons with appropriate training.
2. Before putting into service also read the safety rules and
instructions of the motor supplier.
3. The machine must be used only for the purpose intended. Use of
the machine without the safety devices is not permitted. Observe all
the relevant safety regulations.
4. When gauge parts are exchanged (e.g. needle, presser foot, needle
plate, feed dog and bobbin) when threading, when the workplace is
left, and during service work, the machine must be disconnected
from the mains by switching off the master switch or disconnecting
the mains plug.
5. Daily servicing work must be carried out only by appropriately
trained persons.
6. Repairs, conversion and special maintenance work must only be
carried out by technicians or persons with appropriate training.
7. For service or repair work on pneumatic systems, disconnect the
machine from the compressed air supply system (max. 7-10 bar).
Before disconnecting, reduce the pressure of the maintenance unit.
Exceptions to this are only adjustments and functions checks made
by appropriately trained technicians.
8. Work on the electrical equipment must be carried out only by
electricians or appropriately trained persons.
9. Work on parts and systems under electric current is not permitted,
except as specified in regulations DIN VDE 0105.
10. Conversion or changes to the machine must be authorized by us
and made only in adherence to all safety regulations.
11. For repairs, only replacement parts approved by us must be used.
12. Commissioning of the sewing head is prohibited until such time as
the entire sewing unit is found to comply with EC directives.
13. The line cord should be equipped with a country-specific mains
plug. This work must be carried out by appropriately trained
technicians (see paragraph 8).
It is absolutely necessary to respect the safety
instructions marked by these signs.
Danger of bodily injuries !
Please note also the general safety instructions.

Contents Page:
Preface and general safety instructions
Part 1:
(Edition 06/2008)
1. Product description ............................................ 5
2. Designated use ............................................... 5
3. Subclasses and sewing equipment
3.1 Subclasses .................................................. 6
3.2 Sewing equipment .............................................. 6
4. Optional equipment............................................. 7
5. Technical data ................................................ 8
6. Machine operation
6.1 Threading the needle thread ........................................ 9
6.2 Winding the hook thread .......................................... 9
6.3 Inserting the bobbin and threading the hook thread .......................... 10
6.4 Adjustingthethreadtension........................................ 11
6.4.1 Adjusting the hook thread tension ..................................... 11
6.4.2 Adjusting the needle thread tension.................................... 12
6.5 Switching the thread tensioner on/off ................................... 13
6.6 Adjusting the thread regulator ....................................... 14
6.7 Needle change ................................................ 15
6.8 Liftingandfoldingtherollerpresser.................................... 16
6.9 Sewing-footpressure ............................................ 17
6.10 Reversesewing(Backtacking)....................................... 18
6.11 Setting the stitch length ........................................... 19
6.12 Starting up the manually controlled machine with a clutch motor .................. 19
6.13 Controlling the machine equipped with a positioning motor...................... 20
6.13.1 By a control pedal .............................................. 20
6.13.2 By a key panel ................................................ 21
7. Positioning motor Efka DC1600/DA82GA
7.1 General..................................................... 22
8. Positioning motor (drive) Efka VD552/6F82FA
8.1 General..................................................... 22
9. Positioning drive Efka DC1550/DA321G
9.1 General..................................................... 23
GB
Operating Instructions Class 887 - Original Instructions

Contents Page:
10. Sewing with machine with positioning motor (drive)
10.1 Machineautomaticfunctions........................................ 24
10.2 Example of machine operation at sewing ................................ 25
11. Maintenance
11.1 Cleaning and checking ........................................... 26
11.2 Lubrication ................................................... 29

1. Product description
Dürkopp Adler 887 is a special sewing machine for universal use.
•It is a flatbed double-lockstitch machine.
•The machine has a double intermittent feeding. A lower wheel
feeder and a driven roller presser feed in two steps, a needle feed
feeds in the first step only. The first step represents 50% of the total
stitch length.
•Depending on subclass, the machine may be equipped with a large
or oversized hook, with automatic functions such as thread
trimming, automatic backtacking, automatic foot lifting.
•Equipped with a two-piece vertical hook.
•With a maximum of 12 mm clearance when sewing feet are lifted.
•The residual thread length after thread trimming is about 15 mm.
•A safety clutch prevents a changing of the hook setting or a hook
damage in the case of a thread deflection into the shuttle track.
•The throat plate has replaceable inserts with the stitch hole
dimension difference, which are optional in dependence on the
needle number.
•Automatic wick lubricating with an inspection glass on the arm for
machine and hook lubrication.
•Integrated winder.
2. Designated use
The 887 is a sewing machine designated for shoe, leather, and
upholstery sewing. The usual material 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.
This special sewing machine can also be used to produce so-called
technical seams. In this case, however, the operator must assess the
possible dangers which may arise (with which DÜRKOPP ADLER AG
would be happy to assist), since such applications are on the one hand
relatively unusual and, on the other, so varied 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 sewn with this machine. The
material may be no thicker than 7 mm when compressed by the
lowered sewing feet. The material may not contain any hard objects,
since if it does the machine may not be operated without an
eye-protection device. No such device is currently available.
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.
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3. Subclasses and sewing equipment
3.1 Subclasses
Class and subclass Needle Stitch Machine Hook Trimming
number length control and
backtacking
1 needle, hook to the right
of the needle
upto5mm upto7mm manual automatic foot lifting and electric backtacking automatic foot lifting and pneumatic backtacking big, two part very big, two part without trimming, manual backtacking with trimming, automatic backtacking
0887 160020 X X X X X
0887 160040 X X X X X
0887 160122 X X X X X
0887 160142 X X X X X
3.2 Sewing equipment
0,01
mm 0,01 mm - - mm 1/min 1/min mm mm mm mm dB (A)
887-E1
1
light 70-80 70 80-60 60 4 3000 2500
35
--
887-E2 medium 90-110 90 50-30 40 5 2500 2500 - -
887-E3 heavy 120-160 120
25-10 20 7 2000 1600 - -
* When sewing very thick layers, it is necessary to reduce the sewing speed significantly.
** Equivalent acoustic pressure level of a separate machine in the workplace by 20 % use of the machine.
Measured at the maximum stitch length and maximum sewing speed in compliance with
DIN 45635-48-A-1-KL2.
6
crosswise grooving
0887 160020
0887 160122
0887 160020
0887 160040
0887 160122
0887 160142
Sewing equipment For classes and subclasses Number of needles Sewing category Scope
Needle number
Standard Scope Polyester
thread label number
Standard Maximum stitch length Maximum
Sewing speed
Standard * Top roller diameter Wheel feed tooth pitch Seam distance Trimming distance from the needle Machine noise **

4. Optional equipment
Order number Optional equipment
0888 220334 Roller presser Æ25 mm knurled
0888 220344 Roller presser Æ25 mm smooth
0888 220354 Roller presser Æ25 mm rubberized
0888 220364 Roller presser Æ35 mm knurled (basic)
0888 220374 Roller presser Æ35 mm smooth
0888 220384 Roller presser Æ35 mm rubberized
0888 220394 Roller presser Æ45 mm, width 3.8 mm
0888 220404 Roller presser Æ45 mm, width 2.0 mm
9880 888100 Diode lamp
MG55 400334 Stand set MG 55-3 for the machine driven with a V-belt (contains a frame, pedal,
drawer and a table top 1060 x 500 mm)
MG55 400324 Stand set MG 55-3 for the machine driven with a toothed belt (contains a frame, pedal,
drawer and a table top 1060 x 500 mm)
0700 088802 Stand top plate for the V-belt
0700 088804 Stand top plate for the toothed belt
N800 080030 Tiltable material guide
N800 080004 Tiltable material guide with a roller
0887 320143 Wheel feeder rubberized
N800 015412 Tiltable material guide with a roller on the slide plate
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5. Technical data
Stitch type double lockstitch 301
Needle system 134LR, 134 KKLR, 134, 134 D
Foot lifting with a hand lever 6 mm
Foot lifting with a knee lever or automatically 12 mm
Thread length after trimming max. 15 mm
Machine head clearance height 137 mm
Machine head clearance width 280 mm
Machine base plate plan dimensions 178 x 518 mm
Table top plan dimensions 1060 x 500 mm
Table top minimum height 740 mm
Table top maximum height 900 mm
Machine height max. 1630 mm
Maximum input (short-time) 0,8 kW
Weight of machine head 0887 160020, 0887 160040
Weight of machine head 0887 160122, 0887 160142
Weight of stand 30 kg
Weight of motor FIR 19 kg
Weight of motor EFKA DC 1600 18 kg
Weight of motor EFKA DC 1550 10 kg
8

6. Machine operation
6.1 Threading the needle thread
Caution! Risk of injury!
Turn off the main switch.
The needle thread may only be threaded with the sewing machine
switched off.
–Thread the single needle machine according to Fig. If the machine
is equipped for heavy sewing, wind the thread around the pin (1).
6.2 Winding the hook thread
–Thread the thread according to the picture.
–Insert the thread under the knife (1) and tear off by pulling in the
arrow direction (2).
–Fix the bobbin and press the lever (3) in the direction (4).
–Start the machine up.
–After the thread winding, slide the thread under the knife again (1)
and tear it off.
–Insert another bobbin immediately and press the lever (3).
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6.3 Inserting the bobbin and threading the hook thread
Caution! Risk of injury!
Turn off the main switch.
The hook-thread bobbin may only be changed with the machine
switched off.
–Tilt the shutter (1) up.
–Insert the bobbin (2) with the thread end (3) oriented according to
the picture.
–Thread the thread through the slit (4) and space (5), hook upon the
shutter (1) and fasten it under the spring (6).
–Trim the thread ends according to the picture.
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6.4 Adjusting the thread tension
6.4.1 Adjusting the hook thread tension
Caution! Risk of injury!
Turn off the main switch.
The hook thread tension may only be adjusted with the machine
switched off.
–Adjust the hook thread tension by the screw (1) with a screwdriver.
The tension is increased by tightening the screw.
–Measure the thread tension with a dynamometer. Thread the
thread according to the picture and pull in the arrow direction (3).
This tension is adjusted in the factory in dependence on the
selected sewing equipment according to the below table, and it is
suitable for the usual sewing operations. For sewing thin soft
materials, it is necessary to reduce the tension. If the seam is to be
tightened strongly, it is necessary to increase the tension and
reduce the sewing speed at the same time.
Hook thread tension mean value
Sewing category Needle used
thread Nadelstärke Nm
Tension in
grams
light 70-80 50
medium 90-110 65
heavy 120-160 90
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6.4.2 Adjusting the needle thread tension
Supplementary tensioner adjustment (1)
–Adjust the supplementary tensioner (1) so that it has the lowest
tension possible, but so high that, when taking out the sewn
material after the preceding trimming (when the tensioners (2)
and (3) are switched off), the thread is not pulled out of the
tensioner (1). (Tensioner (1) is not switched off at the foot lifting).
Tensioner (2) and (3) adjustment
The machine can be equipped with a lever (4) for the tensioner (2)
temporary switching off. In this case, two thread tension values can be
pre-selected and a good stitch tightening can be achieved when
sewing over a variable number of layers of the sewn material with one
seam.
–Switch the tensioner off (2) with the lever (4) and sew on a smaller
number of layers.
–Regulate the thread tension with the tensioner (3), till a good
thread loop is achieved (see opposite figure).
–Switch the tensioner on (2) by the lever (4) shifting out and sew on
a greater number of layers.
–Regulate the thread tension with a tensioner (2), till a good thread
loop is achieved (see opposite figure).
–If the machine is not equipped with the lever (4), regulate the
tension by both tensioners (2) and (3) at the same time so that their
nuts are screwed approximately in the same height.
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Correct thread interlacing in the center
of the material
Needle-thread tension too low
or
hook-thread tension too high
Needle-thread tension too high
or
hook-thread tension too low
6.5 Switching the thread tensioner on/off
All machines
–When pulling the hand lever (1) towards the operator, the
tensioners (3) and (4) are switched off.
–Tensioner (2) is never switched off.
Manually controlled machines (without the thread trimming)
–Tensioners (3) and (4) are mechanically switched off when the foot
is lifted with a hand or knee lever.
Machines with the thread trimming
–Tensioners (3) and (4) are switched off with an electric magnet or
pneumatic cylinder at the foot automatic lifting. If the automatic foot
lifting at the machine stop is pre-selected, the tensioners are
switched off, but temporarily only, so that the switching off electric
magnet does not overheat.
–Tensioners (3) and (4) are also switched off temporarily during the
trimming cycle.
–Tensioners (3) and (4) are not switched off at the foot lifting with
the hand or knee lever.
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6.6 Adjusting the thread regulator
The thread regulator (2) controls the quantity of needle thread required
for stitch formation.
The thread regulator must be precisely adjusted for an optimum result.
–Loosen the screw (1), shift the thread regulator (2), and tighten the
screw (1).
–For most of the sewing operations, the regulator optimal setting is
with its right edge corresponding to the No. 2.
–For a thin material layer and a very short stitch only, the setting
corresponding to the No. 3 is suitable.
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6.7 Needle change
Caution! Risk of injury!
Turn off the main switch.
The needle may only be changed with the sewing machine switched
off.
–Draw the lever (1) in your direction to loosen the screw fixing the
needle.
–Remove the needle and insert a new one with the needle scarf (2)
to the right according to the section (3) or (4). The needle may not
be oriented according to the section (5).
–Turn the lever (1) back to tighten the needle fixing screw.
Caution!
A false orientation of the needle turning may cause the hook point
destruction.
When changing to another needle size, the distance between hook
and needle must be readjusted (see service instructions).
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MAX. 3°

6.8 Lifting and folding the roller presser
Lifting the roller presser with a hand lever
–Lift the roller presser by the lever turning (1) in the arrow direction
to the stop (the roller presser remains lifted, the lever (1) remains
tilted).
–Lower the roller presser by putting the lever (1) to the initial
position, or by pressing the knee lever (3) and its subsequent
release.
–After the roller presser lifting with the hand lever, the machine may
be started up (e. g. at the hook thread winding).
Roller presser lifting with the knee lever
–The roller presser is lifted by pressing the lever (3); the roller
presser is lowered at the lever release.
Caution!
At the roller presser lifting higher than 6 mm over the throat plate the
machine may not operate, otherwise the needle bar with the needle
holder hits the roller presser, or the needle guides of the double needle
machines.
Roller presser lifting with a pedal - automatically
–The roller presser lifting in the machines equipped with a
positioning motor (drive) can be controlled by the pedal (4)
treading in the position -1 (see par.6.13.1). The roller presser is
lifted to the upper dead point by means of an integrated electric
magnet or pneumatic cylinder. After the pedal is released, the roller
presser is lowered.
–It is possible to pre-select the automatic roller presser lifting at
each machine stop without the necessity to tread the pedal in the
position to the position -1. In this case, the roller presser is lowered
at the pedal treading in the position +1. After the finishing of the
seam, the roller presser remains lifted permanently.
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Roller presser folding
–Lift the roller presser with the hand lever.
–Lift the roller presser by pressing in the signed direction.
Caution! Risk of injury!
Roller presser folding to be done at main switch off and standing
motor.
6.9 Sewing-foot pressure
–Regulate the roller presser pressure with the setting wheel (1).
–To increase the roller presser pressure = turn the setting wheel (1)
clockwise.
To decrease the roller presser pressure = turn the setting wheel (1)
anti-clockwise.
–The roller pressure is to be as small as possible, but strong enough
that the roller presser is not lifted by the needle friction in the
material during the upward movement and that the feeding is
reliable.
–The maximum roller presser pressure is 100N in the machine
equipped with electric magnets, and in the machine with the
pneumatic cylinders 160N.
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6.10 Reverse sewing (Backtacking)
Backtacking with a hand lever
–Press the lever (1) downwards. As long as the reverse feed
lever (1) is pressed down, the machine sews in reverse.
Backtacking with a key
–Press the key (2) or lever (3). The machine sews in reverse, as
long as the key (2) or lever (3) is pressed down.
Automatic backtacking (bartacking)
In the machines equipped with the positioning motor it is possible to
pre-select the backtacking by a pre-selected backstitches number both
at the beginning and at the seam end. At the seam beginning (after the
preceding thread trimming) after the pedal treading forwards the
machine sews the pre-selected bartack entirely automatically. The
same at the seam end after the pedal treading in the position –2 the
machine sews the pre-selected end bartack and then trims the threads.
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