Duerkopp Adler 171 User manual

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Service Instrucions

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IMPORTANT

READ CAREFULLY BEFORE USE

KEEP FOR FUTURE REFERENCE

Table of Contents

Service Instructions 171/173 - 00.0 - 01/2020 1

1 About these instructions ...........................................................3

1.1 For whom are these instructions intended?..................................3

1.2 Representation conventions – symbols and characters...............3

1.3 Other documents..........................................................................4

1.4 Liability..........................................................................................5

2 Safety...........................................................................................7

2.1 Basic safety instructions...............................................................7

2.2 Signal words and symbols used in warnings................................8

3 Working basis...........................................................................11

3.1 Order of the adjustments............................................................11

3.2 Laying the cables........................................................................11

3.3 Gage set and handwheel positions ............................................12

3.3.1 Gage set.....................................................................................12

3.3.2 Handwheel positions ..................................................................13

4 Adjusting the adjusting disk relative to the arm shaft crank ..15

5 Placing the toothed belt at the bottom...................................16

6 Position of needle and hook....................................................17

6.1 Adjusting the rocker bolt for the hook drive and the lower shaft

bearing on the left.......................................................................17

6.2 Adjusting the hook drive housing................................................19

6.3 Adjusting the needle evasive movement (ellipsis width).............20

6.4 Adjusting the symmetry of the hook ...........................................23

6.5 Adjusting the hook in the hook carrier........................................24

6.6 Adjusting looping stroke and needle bar height..........................25

6.7 Adjusting the needle guard.........................................................27

7 Feed dog....................................................................................28

7.1 Adjusting the thrust movement of the feed dog..........................28

7.2 Adjusting the stroke movement of the feed dog .........................30

7.3 Adjusting the retention spring on the hook .................................31

7.4 Adjusting the thread take-up disk...............................................32

8 Adjusting the thread trimmer ..................................................34

9 Adjusting the sewing foot stroke............................................40

9.1 Adjusting the sewing foot stroke for presser feet........................40

9.2 Adjusting the sewing foot stroke for hinged lever feet................43

10 Stitch lengths............................................................................45

10.1 Adjusting normal stitch lengths...................................................45

10.2 Adjusting stitch condensing for the bottom feed.........................46

10.3 Adjusting stitch condensing for the puller...................................47

11 Puller..........................................................................................48

11.1 Adjusting the synchronization of bottom feed and puller............48

11.2 Adjusting the distance between carrier roller and needle...........49

11.3 Adjusting the lift stroke of the carrier roller .................................50

11.4 Adjusting the carrier roller pressure............................................51

11.5 Fabric deflector...........................................................................52

Table of Contents

2 Service Instructions 171/173 - 00.0 - 01/2020

11.6 Toothed belt tension...................................................................52

11.7 Changing the carrier roller..........................................................53

12 Edge pinker...............................................................................54

12.1 Disassembling the edge pinker ..................................................54

12.2 Changing the knives...................................................................55

12.3 Adjusting the cutting pressure....................................................59

12.4 Adjusting point in time for cutting................................................60

12.5 Checking the seam pattern.........................................................62

12.6 Adjusting the chain cutter...........................................................63

13 Programming ............................................................................65

13.1 Adjusting the electropneumatic switching of the carrier roller.....69

13.2 Adjusting the stitch count before the carrier roller is lowered.....69

13.3 Adjusting subclass 550-121 for machines with an edge pinker.....70

14 Maintenance..............................................................................71

14.1 Cleaning .....................................................................................72

14.2 Lubricating..................................................................................73

14.2.1 Checking the lubrication of the machine head............................74

14.2.2 Checking the hook lubrication ....................................................74

14.3 Servicing the pneumatic system.................................................75

14.3.1 Adjusting the operating pressure................................................75

14.3.2 Draining the water-oil mixture.....................................................76

14.3.3 Cleaning the filter element..........................................................77

14.4 Parts list......................................................................................78

15 Decommissioning.....................................................................79

16 Disposal.....................................................................................81

17 Troubleshooting .......................................................................83

17.1 Customer Service.......................................................................83

17.2 Errors in sewing process ............................................................83

18 Technical data...........................................................................85

18.1 Data and characteristic values ...................................................86

18.2 Requirements for fault-free operation.........................................86

19 Appendix ...................................................................................87

About these instructions

Service Instructions 171/173 - 00.0 - 01/2020 3

1 About these instructions

These instructions have been prepared with utmost care. They contain

information and notes intended to ensure long-term and reliable operation.

Should you notice any discrepancies or if you have improvement requests,

then we would be glad to receive your feedback through Customer

Service ( p. 83).

Consider these instructions as part of the product and keep it easily

accessible.

1.1 For whom are these instructions intended?

These instructions are intended for:

• Specialists:

This group has the appropriate technical training for performing

maintenance or repairing malfunctions.

With regard to minimum qualification and other requirements to be met by

personnel, please also follow the chapter Safety ( p. 7).

1.2 Representation conventions – symbols and characters

Various information in these instructions is represented or highlighted

by the following characters in order to facilitate easy and quick

understanding:

Proper setting

Specifies proper setting.

Disturbances

Specifies the disturbances that can occur from an incorrect adjustment.

Cover

Specifies which covers must be disassembled in order to access the

components to be set.

Steps to be performed when operating the machine (sewing and

equipping)

Steps to be performed for service, maintenance, and installation

Steps to be performed via the software control panel

The individual steps are numbered:

First step

Second step

The steps must always be followed in the specified order.

1.

2.

…

About these instructions

4 Service Instructions 171/173 - 00.0 - 01/2020

Lists are marked by bullet points.

Result of performing an operation

Change to the machine or on the display/control panel.

Important

Special attention must be paid to this point when performing a step.

Information

Additional information, e.g. on alternative operating options.

Order

Specifies the work to be performed before or after an adjustment.

References

 Reference to another section in these instructions.

Safety Important warnings for the user of the machine are specifically marked.

Since safety is of particular importance, hazard symbols, levels of danger

and their signal words are described separately in the chapter Safety

( p. 7).

Location

information

If no other clear location information is used in a figure, indications of right

or left are always from the user's point of view.

1.3 Other documents

The machine includes components from other manufacturers. Each man-

ufacturer has performed a hazard assessment for these purchased parts

and confirmed their design compliance with applicable European and na-

tional regulations. The proper use of the built-in components is described

in the corresponding manufacturer's instructions.

•



About these instructions

Service Instructions 171/173 - 00.0 - 01/2020 5

1.4 Liability

All information and notes in these instructions have been compiled in

accordance with the latest technology and the applicable standards and

regulations.

Dürkopp Adler cannot be held liable for any damage resulting from:

• Breakage and transport damages

• Failure to observe these instructions

• Improper use

• Unauthorized modifications to the machine

• Use of untrained personnel

• Use of unapproved parts

Transport

Dürkopp Adler cannot be held liable for breakage and transport damages.

Inspect the delivery immediately upon receiving it. Report any damage

to the last transport manager. This also applies if the packaging is not

damaged.

Leave machines, equipment and packaging material in the condition in

which they were found when the damage was discovered. This will ensure

any claims against the transport company.

Report all other complaints to Dürkopp Adler immediately after receiving

the product.

About these instructions

6 Service Instructions 171/173 - 00.0 - 01/2020

Safety

Service Instructions 171/173 - 00.0 - 01/2020 7

2 Safety

This chapter contains basic information for your safety. Read the instruc-

tions carefully before setting up or operating the machine. Make sure to

follow the information included in the safety instructions. Failure to do so

can result in serious injury and property damage.

2.1 Basic safety instructions

The machine may only be used as described in these instructions.

These instructions must be available at the machine's location at all times.

Work on live components and equipment is prohibited. Exceptions are

defined in the DIN VDE 0105.

For the following work, switch off the machine at the main switch or

disconnect the power plug:

• Replacing the needle or other sewing tools

• Leaving the workstation

• Performing maintenance work and repairs

• Threading

Missing or faulty parts could impair safety and damage the machine.

Only use original parts from the manufacturer.

Transport Use a lifting carriage or stacker to transport the machine. Raise the machine

max. 20 mm and secure it to prevent it from slipping off.

Setup The connection cable must have a power plug approved in the relevant

country. The power plug may only be assembled to the connection cable

by qualified specialists.

Obligations

of the operator

Follow the country-specific safety and accident prevention regulations and

the legal regulations concerning industrial safety and the protection of the

environment.

All the warnings and safety signs on the machine must always be in legible

condition. Do not remove!

Missing or damaged warnings and safety signs must be replaced

immediately.

Requirements

to be met by

the personnel

Only qualified specialists may:

• Setting up the machine/putting the machine into operation

• Performing maintenance work and repairs

• Performing work on electrical equipment

Only authorized persons may work on the machine and must first have

understood these instructions.

Safety

8 Service Instructions 171/173 - 00.0 - 01/2020

Operation Check the machine during operating for any externally visible damage.

Stop working if you notice any changes to the machine. Report any chang-

es to your supervisor. Do not use a damaged machine any further.

Safety

equipment

Safety equipment should not be disassembled or deactivated. If it is essen-

tial to disassemble or deactivate safety equipment for a repair operation, it

must be assembled and put back into operation immediately afterward.

2.2 Signal words and symbols used in warnings

Warnings in the text are distinguished by color bars. The color scheme is

based on the severity of the danger. Signal words indicate the severity of

the danger.

Signal words Signal words and the hazard they describe:

Symbols The following symbols indicate the type of danger to personnel:

Signal word Meaning

DANGER (with hazard symbol)

If ignored, fatal or serious injury will result

WARNING (with hazard symbol)

If ignored, fatal or serious injury can result

CAUTION (with hazard symbol)

If ignored, moderate or minor injury can result

CAUTION (with hazard symbol)

If ignored, environmental damage can result

NOTICE (without hazard symbol)

If ignored, property damage can result

Symbol Type of danger

General

Electric shock

Safety

Service Instructions 171/173 - 00.0 - 01/2020 9

Examples Examples of the layout of warnings in the text:

 This is what a warning looks like for a hazard that will result in serious

injury or even death if ignored.

 This is what a warning looks like for a hazard that could result in

serious or even fatal injury if ignored.

 This is what a warning looks like for a hazard that could result in

moderate or minor injury if the warning is ignored.

Puncture

Crushing

Environmental damage

Symbol Type of danger

DANGER

Type and source of danger!

Consequences of non-compliance.

Measures for avoiding the danger.

WARNING

Type and source of danger!

Consequences of non-compliance.

Measures for avoiding the danger.

CAUTION

Type and source of danger!

Consequences of non-compliance.

Measures for avoiding the danger.

Safety

10 Service Instructions 171/173 - 00.0 - 01/2020

 This is what a warning looks like for a hazard that could result in envi-

ronmental damage if ignored.

 This is what a warning looks like for a hazard that could result in

property damage if ignored.

CAUTION

Type and source of danger!

Consequences of non-compliance.

Measures for avoiding the danger.

NOTICE

Type and source of danger!

Consequences of non-compliance.

Measures for avoiding the danger.

Working basis

Service Instructions 171/173 - 00.0 - 01/2020 11

3 Working basis

3.1 Order of the adjustments

Order

The adjustment positions for the machine are interdependent.

Always comply with the order of individual adjustment steps as specified.

It is absolutely essential that you follow all notices regarding prerequisites

and subsequent settings that are marked with in the margin.

3.2 Laying the cables

Ensure that all cables are laid in the machine such that the function of

moving parts is not hampered.

To lay the cables:

1. Lay any excess cabling neatly in proper cable snakes.

2. Bind together the cable loops with cable ties.

Important

Tie loops wherever possible to fixed parts.

The cables must be secured firmly.

3. Cut off any overlapping cable ties.

NOTICE

Property damage may occur!

Risk of machine damage from incorrect order.

It is essential to follow the working order specified in these

instructions.

NOTICE

Property damage may occur!

Excess cables can impair the functioning of moving machine parts.

This impairs the sewing function and can result in damage.

Lay excess cable as described above.

Working basis

12 Service Instructions 171/173 - 00.0 - 01/2020

3.3 Gage set and handwheel positions

3.3.1 Gage set

Gage Setting

Position of the rocker bolt in the hook drive housing

Position of the hook drive housing

Locking peg

Dial gage for measuring the needle evasive movement

(Ellipsis width) of the hook drive.

Hook slant of 89° 30’

Even hook movement for symmetry

Working basis

Service Instructions 171/173 - 00.0 - 01/2020 13

3.3.2 Handwheel positions

Some settings require that the machine be set to a specific position.

Height of the thread take-up disk

Pusher eccentric for the feed dog

Expansion screw for replacing the arm shaft crank

Position Setting

A Adjusting disk on the upper toothed belt wheel with its deepest slot A

to the groove in the arm shaft crank

B Symmetry of the hook movement

C • Position of the lower toothed belt wheel

• Looping stroke

• Needle bar height

D Stroke and pusher eccentric of the feed dog on right-hand machines

E • Thread pick-up disk

• Eccentric for the puller

F Stroke and pusher eccentric of the feed dog on left-hand machines

Gage Setting

Working basis

14 Service Instructions 171/173 - 00.0 - 01/2020

Fig. 1: Handwheel positions

To lock the machine in place at a specific position:

1. Turn the handwheel to the desired position.

2. Insert the locking peg (1) into the hole (2).

 The locking peg (1) is seated in the corresponding slot of the adjusting

disk (3).

The machine has been locked in place.

(1) - Locking peg

(2) - Hole

(3) - Adjusting disk

①② ①② ③

Rotational direction of the machine

B

C

A

F

E

D

Adjusting the adjusting disk relative to the arm shaft crank

Service Instructions 171/173 - 00.0 - 01/2020 15

4 Adjusting the adjusting disk relative to the arm

shaft crank

Fig. 2: Adjusting the adjusting disk relative to the arm shaft crank

Proper setting

The deepest slot A of the adjusting disk is in line with the slot in the arm

shaft crank.

To adjust the adjusting disk relative to the arm shaft crank:

1. Loosen the screws of the set collar.

The set collar is on the left next to the upper toothed belt wheel.

2. Insert the locking peg (2) into the slot (1) of the arm shaft crank.

3. Turn the handwheel until the locking peg (3) can be inserted into

the deepest slot A of the adjusting disk ( p. 13).

4. Move the arm shaft crank to the right until it makes contact with the arm

shaft bearing.

5. Tighten the screws of the set collar.

CAUTION

Risk of injury from moving parts!

Crushing possible.

Switch off the machine before you adjust the

adjusting disk.

(1) - Slot

(2) - Locking peg

(3) - Locking peg

①② ③

Placing the toothed belt at the bottom

16 Service Instructions 171/173 - 00.0 - 01/2020

5 Placing the toothed belt at the bottom

Fig. 3: Placing the toothed belt at the bottom

To place the toothed belt at the bottom:

1. Place the toothed belt.

Make sure both screws in slot C assume the position shown above

and can be accessed with a screw driver ( p. 13).

CAUTION

Risk of injury from moving parts!

Crushing possible.

Switch off the machine before you adjust the

adjusting disk.

Position of needle and hook

Service Instructions 171/173 - 00.0 - 01/2020 17

6 Position of needle and hook

6.1 Adjusting the rocker bolt for the hook drive and the lower

shaft bearing on the left

Fig. 4: Adjusting the rocker bolt for the hook drive and the lower shaft bearing on the left

WARNING

Risk of injury from moving parts!

Crushing possible.

Switch off the machine before you check and adjust

the position of the hook and needle.

NOTICE

Property damage may occur!

There is a risk of machine damage, needle breakage or damage

to the thread if the distance between needle groove and hook tip is

incorrect.

Check and, if necessary, reset the distance to the hook tip after

inserting a needle with a new size.

(1) - Gage

(2) - Rocker bolt

(3) - Face

(4) - Screws

(5) - Screws

(6) - Lower shaft bearing

(7) - Thread trimmer

(8) - Hook carrier

(9) - Screw

(10) - Hook drive housing

(11) - Screw

(12) - Gear wheel

(13) - Eccentric

(14) - Set collar

(15) - Oil collection tray

⑤⑥③

①②③④⑦⑧ ⑨⑩⑪⑫⑬⑭⑮

Position of needle and hook

18 Service Instructions 171/173 - 00.0 - 01/2020

Proper setting

The distance between the middle of needle and the lower shaft bearing on

the left is 39.8 mm.

The distance between the middle of the needle and the end of the rocker

bolt is 38.8 mm.

The rocker bolt must be pushed up against the face of the lower shaft.

To adjust the rocker bolt for the hook drive and the lower shaft bearing on

the left:

1. Tilt the machine head.

2. Loosen the screw (9).

3. Drain the oil.

4. Erect the machine head.

5. Disassemble the following components:

• Needle

• Needle guard

• Hook carrier (8) with hook

• Thread trimmer (7)

6. Loosen the screw (11).

7. Carefully pull off the hook drive housing (10).

While doing so, slowly turn the lower shaft (3).

8. Tighten the gage (1).

9. Loosen the screws (5).

10. Move the lower shaft bearing (6) up to the gage (1).

11. Tighten the screws (5).

12. Loosen the screws (4).

13. Check if the rocker bolt (2) is pushed up against the face (3) of the lower

shaft.

14. Disassemble grease cap and oil collection tray (15).

15. Loosen eccentric (13), set collar (14) and gear wheel (12).

16. Move the lower shaft (3) such that there is a distance of 1 mm between

lower shaft bearing (6) and rocker bolt (2).

 The rocker bolt (2) abuts on the gage (1).

17. Push the set collar (14) up against the eccentric (13).

18. Align the gear wheel (12).

19. Tighten the screws.

20. Check the movement of the toothed belt on the lower toothed belt

wheel.

21. If required, align the lower toothed belt wheel.

22. Tighten the screw (9).

23. Assemble the hook drive housing (10).

24. Top off the oil.

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