DURKOPP ADLER 838 Manual de usuario

838

Spezialnähmaschine

Betriebsanleitung

Instruction manual

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.:

10/2008 Rev. index: 00.0 Printed in Federal Republic of Germany 0791 838740

Eigentum der Dürkopp Adler AG und urheberrechtlich geschützt. Jede, auch auszugsweise

Wiederverwendung dieser Inhalte ist ohne vorheriges schriftliches Einverständnis der Dürkopp Adler AG

verboten.

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.

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: Operating instructions - Class 838

(Edition 10/2008)

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

5.1 Class-specifictechnicaldata ....................................... 8

5.2 Subclass-specifictechnicaldata..................................... 8

6. Operations

6.1 Threading the needle thread ....................................... 9

6.2 Winding on the hook thread ........................................ 10

6.3 Changing the hook thread bobbin .................................... 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 tensioners on/off ................................. 13

6.5.1 The functioning of the main thread tension and the supplementary thread tension

inrelationtothesewingfootlift...................................... 14

6.6 Adjusting the thread regulator ...................................... 14

6.7 Changing the needle for single-needle machines ........................... 15

6.8 Changing the needle for double-needle machines .......................... 16

6.9 Liftingandfoldingthetoproller...................................... 17

6.10 Sewingfootpressure............................................ 18

6.11 Sewinginreverse(back-tacking) .................................... 19

6.12 Adjusting the stitch length ......................................... 20

6.13 Engaging the safety clutch for hook blockages............................. 21

6.14 Operatingthemachinewiththepositioningdrive ........................... 23

6.14.1 With the pedal ................................................ 23

6.14.2 With the buttons (key panel) ....................................... 24

7. Positioning drive on the Efka DC 1550/DA321G .......................... 25

8. Sewing on a machine with positioning drive

8.1 Automaticmachinefunctions ....................................... 26

8.2 Example - operating the machine while sewing ............................ 27

Contents Page:

9. Maintenance

9.1 Cleaning and testing ............................................ 28

9.2 Lubrication .................................................. 30

1. Product description

The Dürkopp Adler 838 is a special all-purpose sewing machine.

·It is a post-bed double-lockstitch machine.

·It has a bottom drop (feed) mechanism and a drive-powered top

roller.

·There are two setting wheels (knobs) which allow the selection of

two stitch lengths. There is also a pneumatically-controlled device

with a button for toggling between the two stitch lengths during

sewing.

·Depending on if the subclass is a single-needle or double-needle

sewing machine, the following automatic functions are featured: an

electro-magnetic thread trimmer, pneumatically-controlled

bartacking, a sewing foot lift, and a switchable upper thread

tensioner.

·The machine is equipped with a large double-sectioned vertical

hook.

·The maximum lift for the sewing foot is 12 mm.

·There is a safety clutch to avoid displacing or damaging the hook if

the thread gets jammed in the shuttle track.

·Depending on the width of the needle, swappable throat plate

inserts with corresponding stitching holes can be swapped out at

the throat plate.

·The machine features automatic wick lubrication and a viewing

window in the arm for watching the machine and hook lubrication.

Some of the oil is lost during the hook lubrication. The remaining oil

is redirected by the pump back to the central reservoir.

·Integrated bobbin winder.

2. Designated use

The 838 machines are suitable for use in producing shoes, decorative

ornamental work, and upholstery. The typical sewing material is leather

(either natural or synthetic). The sewing machine can also be used for

sewing shoe textiles.

The setup of the machine depends on the material to be sewed and

whether it is heavy or extra heavy.

Generally only dry material may be sewn with this sewing unit. The

material may be no thicker than 7 mm when compressed by the

lowered top roller.

The sewing material must not contain any hard objects since the

sewing machine is not equipped with any form of eye protection.

This sewing machine may be set up and operated only in dry,

well-maintained premises. If the sewing machine is used in other

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.

3. Subclasses and sewing equipment

3.1 Subclasses

Class and

Subclass

Number of

needles

Stitch length Machine-

control

Hook Trimming and

seam tacking

one needle, hook to

right of needle

two needles

up to 8 mm

autom. foot lift

pneumatic

seam tacking

large two-section

with thread trimming,

autom. seam tacking

0838 170522 X X X X X

0838 270522 X X X X X

3.2 Sewing equipment

0,01

mm 0,01

mm - - mm 1/min 1/min mm mm mm dB

(A)

838-E1 1 heavy 120-160 120 25-10 20 8 2000 1600 35 1,5 -

838-E2 1 extra

heavy 180-230 180 10-8 10 8 1600 1600 35 1,5 -

838-E3/1,6 2 heavy 120-180 180 25-10 10 8 2000 1600 35 1,5 1,6

838-E4/2,0 2 heavy 120-180 180 25-10 10 8 2000 1600 35 1,5 2,0

838-E5/2,4 2 heavy 120-180 180 25-10 10 8 2000 1600 35 1,5 2,4

838-E6/3,2 2 heavy 120-180 180 25-10 10 8 2000 1600 35 1,5 3,2

* You must reduce the sewing speed significantly when sewing through very thick materials.

** Noise level of the special sewing machine at the work place, as measured for the maximum stitch length and

the maximum sewing speed in compliance with DIN 45635-48-A-1-KL2.

Sewing equipment

Class and sub-class

Number of neeles

Sewing type

Range Needle width:

Standard

Range

Label number

Standard polyester thread

max. stitch length

Max.

Sewing

speed

Standard *

Top roller diameter

Gearing gap

for the feed dog

Seam clearance gap

Noise intensity level

of machine **

0838 1705220838 270522

4. Optional equipment

Order No. Optional equipment

0888 220334 Top roller Æ25 mm, knurled

0888 220344 Top roller Æ25 mm, smooth

0888 220354 Top roller Æ25 mm, rubber coating

0888 220364 Top roller Æ35 mm, knurled (thoroughly)

0888 220374 Top roller Æ35 mm, smooth

0888 220384 Top roller Æ35 mm, rubber coating

0888 220394 Top roller Æ45 mm, width: 3.8 mm

0888 220404 Top roller Æ45 mm, width: 2.0 mm

9880 888100 Sewing lamp LED

MG55-3 400324 Stand set for machines powered by drive belts

(contains frame, pedal, drawer and table top 1060 x 50 mm)

0700 088804 Table top for drive belt

N800 080030 Edge-guide, swivelling

N800 080004 Edge-guide with roller, swivelling

9780 000108 Compressed air unit

0797 003031 Complete compressed air hose

9805 791113 USB memory key for transferring data with the Efka DA321G control unit

0867 490010 Holder bracket for the Efka V810 or V820 control panel

0688 130384 Knee level for mechanical foot lift

9880 002001 Knee switch

5. Technical data

5.1 Class-specific technical data

Type of stitch Lockstitch 301

Needle system 134LR, 134 KKLR, 134, 134 D

Foot lift with hand lever 6 mm

Foot lift with knee lever or automatic 12 mm

Remaining thread length after thread trimming max. 15 mm

Clearance height of machine head 300 mm

Clearance width of machine head 280 mm

Dimensions of footprint of the machine bed plate 178 x 518 mm

Dimensions of footprint of table plate 1060 x 500 mm

Min. height of the table plate 740 mm

Max. height of the table plate 900 mm

Height of machine max. 1630 mm

Max. (short-term) power consumption 0.8 kW

Compressed air feed 6 bar

5.2 Subclass-specific technical data

Class and

subclass

Number of needles

Column length

Column heigth in

sewing direction

Column width

perpendicular to

sewing direction

Weight of

machine head

Weight of frame

Weight of

Efka DC1550 motor

mm mm mm kg kg kg

0838 170522 1 170 52 59 55 30 10

0838 270522 2 170 52 59 56 30 10

More detail about the technical data are given in the chapter 3.2.

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