DURKOPP ADLER 610, 630 Service Instructions Manual

610/630

Service Instructions

IMPORTANT
READ CAREFULLY BEFORE USE
KEEP FOR FUTURE REFERENCE

All rights reserved.
Property of Dürkopp Adler AG and protected by copyright. Any reuse of these contents, includ-

ing extracts, is prohibited without the written approval in advance of Dürkopp Adler AG.
Copyright © Dürkopp Adler AG - 2014

Table of contents

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

1.1 Scope of application of the instructions ...................................... 3

1.2 Declaration of conformity ............................................................ 3

1.3 Applicable documentation........................................................... 3

1.4 Damage during transport............................................................ 3

1.5 Limitation of liability..................................................................... 4

2 Safety ......................................................................................... 5

2.1 Basic safety instructions ............................................................. 5

2.2 Signal words and icons used in warnings................................... 6

3 Work fundamentals .................................................................. 9

3.1 Symbols in the text ..................................................................... 9

3.2 Sequence of settings ................................................................ 10

3.3 Cable guidance......................................................................... 10

3.4 Screws in safety covers ............................................................ 10

3.5 Removing covers...................................................................... 11

3.5.1 Access to the underside of the machine................................... 11

3.5.2 Removing and fitting the head cover ........................................ 12

3.5.3 Removing and fitting the arm cover.......................................... 12

3.5.4 Removing and fitting the covers on the base plate................... 13

3.5.5 Removing and inserting the throat plate................................... 14

3.5.6 Removing and inserting the top feed foot and sewing foot....... 15

3.5.7 Removing and installing the feeds............................................ 16

3.5.8 Removing and fitting the oil pan ...............................................17

3.5.9 Removing and fitting the upper belt guard................................ 18

3.5.10 Removing and fitting the lower belt guard ................................ 19

3.6 Removing disruptive components............................................. 19

3.6.1 Removing and installing the thread cutting device ................... 20

3.6.2 Removing and installing the needle protection mounting ......... 21

3.6.3 Removing and installing the looper and looper mounting......... 22

3.7 Flat surfaces on shafts.............................................................. 23

3.8 Locking the sewing machine..................................................... 23

4 Gauge and key set .................................................................. 25

5 Setting the adjusting disk to the arm shaft crank ............... 28

6 Setting the holding position of the machine........................ 30

7 Setting the lower toothed belt wheel .................................... 31

8 Setting the sewing foot .......................................................... 32

8.1 Setting the lifter stroke.............................................................. 32

8.2 Setting the speed of foot lifting ................................................. 33

9 Setting the looper ................................................................... 34

9.1 Setting the rocker bolt and left lower shaft bearing................... 34

9.1.1 Draining and filling the oil in the looper drive housing .............. 35

9.1.2 Removing and fitting the looper drive housing.......................... 36

9.1.3 Setting the left lower shaft bearing ........................................... 37

9.1.4 Setting the rocker bolt............................................................... 38

9.2 Setting the looper drive housing ............................................... 40

9.3 Setting the needle evasive movement (ellipsis width) .............. 42

Service Instructions 610/630 - 00.0 - 10/2014 1

Table of contents

9.3.1 Setting the needle evasive movement...................................... 43

9.3.2 Resetting the needle protection................................................ 44

9.3.3 Setting the lower shaft .............................................................. 45

9.4 Setting the symmetry of the looper motion ............................... 46

9.5 Setting the looper in the looper mounting................................. 47

9.6 Setting the looper and needle bar height.................................. 49

9.6.1 Setting the looping stroke position and looper gauge............... 50

9.6.2 Setting the needle bar height.................................................... 51

9.7 Setting the retention spring on the looper................................. 53

9.8 Setting the stitch length-controlled thread take-up ................... 55

10 Setting the needle protection ................................................ 56

11 Differential top and bottom feed ........................................... 58

11.1 Setting the feed motion of the feeds ......................................... 58

11.2 Setting the stroke motion of the feed........................................ 59

11.3 Setting the angle of incline and the height of the feeds............ 60

11.4 Basic setting of bottom feed guides.......................................... 61

12 Foot top feed ........................................................................... 63

12.1 Setting the stroke height of the top feed................................... 63

12.2 Setting the time of the stroke motion ........................................ 65

12.3 Setting the time of the feed motion........................................... 66

12.4 Setting the position of the top feed foot .................................... 67

12.5 Basic setting of top feed guides................................................ 68

13 Setting the thread take-up disk ............................................. 69

15 Thread guide on the machine arm ........................................ 75

16 Setting the tape feed (610) ..................................................... 76

17 Software settings.................................................................... 79

17.1 Basic settings for new programs............................................... 79

17.2 Basic settings, machine ............................................................ 79

17.3 Language selection................................................................... 81

17.4 User settings............................................................................. 81

17.5 USB settings ............................................................................. 82

17.6 Machine calibration................................................................... 82

17.7 Reset settings........................................................................... 82

17.8 Test input/output ....................................................................... 82

17.9 Calibrating electrical thread tension.......................................... 83

17.10 Synchronizing the feeds ........................................................... 85

17.10.1 Calibrate the main feed............................................................. 85

17.10.2 Calibrate differential bottom feed.............................................. 86

17.10.3 Calibrate differential top feed foot............................................. 86

18 Maintenance ............................................................................ 87

18.1 Lubrication ................................................................................ 87

18.2 Cleaning.................................................................................... 88

2 Service Instructions 610/630 - 00.0 - 10/2014

About these service instructions

1 About these service instructions

1.1 Scope of application of the instructions

These instructions describe setting and maintenance work on the sewing
machines 610 and 630. They apply to all subclasses.

The  Operating Instructions describe the intended use and the set-up.

1.2 Declaration of conformity

The machine complies with the European regulations specified in the dec­laration of conformity or in the installation declaration.

1.3 Applicable documentation

The device contains built-in components from other manufacturers, e.g.
drive motors. The respective manufacturers have carried out hazard as­sessments for these purchased parts and confirmed compliance of the de­sign with the applicable European and national regulations. The intended
use of the built-in components is described in the corresponding manuals
of the manufacturers.

1.4 Damage during transport

Dürkopp Adler cannot be held liable for any damage during transport.
Check the delivered product immediately after receiving it. Report any
damage to the last transport manager. This also applies if the packaging
is not damaged.

Keep the machines, devices and packaging material in the condition they
were at the time when the damage was identified. This secures any claims
towards the transport company.

Report all other complaints to Dürkopp Adler immediately after receiving
the product.

Service Instructions 610/630 - 00.0 - 10/2014 3

About these service instructions

1.5 Limitation of liability

All information and notes in these instructions have been compiled in ac­cordance with the latest technology and the applicable standards and reg­ulations.

The manufacturer accepts no liability for any damage due to:

• Failure to observe these instructions

• Improper use

• Unauthorized modifications to the machine

• The deployment of untrained personnel

• Damage during transport

• Using unapproved spare parts

4 Service Instructions 610/630 - 00.0 - 10/2014

Safety

2 Safety

This section contains basic instructions for your safety. Read the instruc­tions carefully before setting up or operating the machine. Make sure to
follow the information included in the safety instructions. Failure to do this
can result in serious injury and damage to the machine.

2.1 Basic safety instructions

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

The operating 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 specifications in DIN VDE 0105.

For the following work, the machine must be disconnected from the power
supply using the main switch or by disconnecting the power plug:

• Replacing the needle or other sewing tools

• Leaving the workplace

• Performing maintenance work and repairs

• Threading

Missing or faulty spare parts could impair safety and damage the machine.
Therefore only use original spare parts from the manufacturer.

Transportation Use a lifting carriage or forklift to transport the machine. Raise the ma-

chine max. 20 mm and secure it against slipping off.

Set-up The connecting cable must have a power plug approved in the specific

country. The power plug may only be connected to the power cable by a
qualified specialist.

Operator's obliga-

tions

Observe the country-specific safety and accident prevention regulations
and the legal regulations concerning industrial safety and the protection of
the environment.

All warnings and safety signs on the machine must always be in legible
condition and may not be removed. Missing or damaged labels must be
replaced immediately.

Service Instructions 610/630 - 00.0 - 10/2014 5

Safety

Requirements to

be met by the per-

sonnel

The machine may only be set up by qualified specialists.

Maintenance work and repairs may only be carried out by qualified spe­cialists.

Work on electrical equipment may only be carried out by qualified specialists.

Only authorized persons may work on the machine. Every person who works
on the machine must first have understood the operating instructions.

Operation Inspect the machine while in use for any externally visible damage. Inter-

rupt your work if you notice any changes to the machine. Report any
changes to your supervisor. A damaged machine must not be used any
further.

Safety equipment Safety equipment may not be removed or put out of service. If this cannot

be avoided for a repair operation, the safety equipment must be refitted
and put back into service immediately afterwards.

2.2 Signal words and icons used in warnings

Warnings in the text are distinguished by color bars. The color scheme is
oriented towards the severity of the danger. Signal words specify the se­verity of a danger:

Signal words Signal words and the hazard they describe:

Signal word Hazard

DANGER Resulting in death or serious injury.

WARNING Death or serious injury possible.

CAUTION Moderate to minor injuries possible.

NOTE Material damage possible.

ATTENTION Environmental damage possible.

6 Service Instructions 610/630 - 00.0 - 10/2014

Safety

Type and source of the danger!

Consequences in the event of noncompliance.
Measures for avoiding the danger.

DANGER

Type and source of the danger!

Consequences in the event of noncompliance.
Measures for avoiding the danger.

WARNING

Symbols In the case of danger to personnel, the following symbols indicate the type

of hazard:

Symbol Type of danger

General danger

Danger due to electric shock

Danger due to sharp objects

Danger due to crushing

Risk of environmental damage

Examples Examples of the layout of the warnings in the text:

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

injury or even death if the warning is not complied with.

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

ous injury or even death if the warning is not complied with.

Service Instructions 610/630 - 00.0 - 10/2014 7

Safety

Type and source of the danger!

Consequences in the event of noncompliance.
Measures for avoiding the danger.

CAUTION

Type and source of the danger!

Measures for avoiding the danger.

ATTENTION

Type and source of the danger!
Measures for avoiding the danger.

NOTE

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

erate or minor injury if the warning is not complied with.

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

ronmental damage if the warning is not complied with.

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

rial damage if the warning is not complied with.

8 Service Instructions 610/630 - 00.0 - 10/2014

Work fundamentals

1.

2.

3.



3 Work fundamentals

3.1 Symbols in the text

The following symbols in the margin and in the text indicate the type of in­formation contained in the text.

Correct setting

Indicates the correct setting.

Faults

Indicates faults that can occur due to an incorrect setting.

Cover

Indicates which covers must be removed in order to access the compo­nents to be set.

Steps to be performed for servicing, maintenance and installation

Steps to be performed via the software control panel

The individual steps are numbered:

1. First setting step

2. Second setting step

3. Third setting step, etc.
The sequence of setting steps must always be followed.

Result of performing an operation

If, as a result of a setting step, a change occurs in the machine or a new
message appears on the display which is important feedback for you, this
change is marked with an arrow: 

Important

Indicates that special attention must be paid to this point when performing
a step.

Information

Provides additional information.

Sequence

Specifies the work to be performed before or after a setting.

Reference

 A reference is provided to another place in the text.

Service Instructions 610/630 - 00.0 - 10/2014 9

3.2 Sequence of settings

Machine damage possible due to using the incorrect sequence.

It is essential that you comply with the sequence of work steps specified
in these instructions.

NOTE

Machine damage and function disruptions are possible due to in­correctly laid cables.

Excess cables can impair the functioning of moving machine parts. This
impairs the sewing function and can result in damage.

Excess cable should therefore be laid as described above.

NOTE

Work fundamentals

Comply with the

sequence

Always comply with the sequence of individual setting steps as specified.

It is absolutely essential that you comply with all notices regarding prereq­uisites and subsequent settings that are marked with in the margin.

3.3 Cable guidance

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

moving parts is not hampered.

1. Lay cables that are too long in tidy loops.

2. Bind together the cable loops with cable ties.

Tie loops wherever possible to fixed parts. The cables must be secured
firmly.

3. Cut off the extending ends of cable ties.

3.4 Screws in safety covers

Screws in safety covers need not be removed from the screw hole. As
soon as the screws are loosened such that the cover can be detached,
you can remove the cover. The screws remain either in the housing or in
the cover. In the text, such screws are marked with the addition (safety
cover).

10 Service Instructions 610/630 - 00.0 - 10/2014

Work fundamentals

Risk of injury

Risk of crushing from moving parts
Switch off the sewing machine before removing or re-

fitting covers.

WARNING

(1) - Machine upper section
(2) - Support

(3) - Handle

①

②

③

3.5 Removing covers

For many setting operations, you must remove the machine covers in or­der to access the components.

The following is a description of how to remove the individual covers and
fit them again. The text for the relevant setting operations then only men­tions which of the covers must be removed.

3.5.1 Access to the underside of the machine

In order to access the components on the underside of the machine, the
upper part of the machine must be tilted backwards.

Fig. 1: Tilting the upper part of the machine backwards and returning it to its upright position

Tilting the upper part of the machine backwards.

1. Tilt the upper part of the machine (1) back to the support (2) using the
handle (3).

Straightening up the upper part of the machine

2. Carefully tilt the upper part of the machine (1) forward to its upright posi­tion using the handle (3).

Service Instructions 610/630 - 00.0 - 10/2014 11

3.5.2 Removing and fitting the head cover

(1) - Screws (2) - Head cover

②

①

(1) - Arm cover (2) - Screws

①

②

Fig. 2: Removing and fitting the head cover

Removing the head cover

1. Loosen all 3 screws (1).

2. Remove the head cover (2).

Work fundamentals

Fitting the head cover

1. Fit the head cover (2).

2. Tighten all 3 screws (1).

3.5.3 Removing and fitting the arm cover

Fig. 3: Removing and fitting the arm cover

Removing the arm cover

1. Loosen all 3 screws (2).

2. Remove the arm cover (1) carefully. Ensure that you do not pull on the
cables while doing so.

12 Service Instructions 610/630 - 00.0 - 10/2014

Work fundamentals

(1) - Cover, left
(2) - Opening

(3) - Cover, right

①

②

③

Fitting the arm cover

1. Fit the arm cover (1) carefully. Ensure that you do not catch or squeeze
the cables while doing so.

2. Tighten all 3 screws (2).

3.5.4 Removing and fitting the covers on the base plate

Fig. 4: Removing and fitting the covers on the base plate

Removing the cover

1. Raise the left cover (1) using a small screwdriver at the opening (2) and
remove.

2. Raise the right cover (3) with a small screwdriver and remove.

Fitting the covers

1. Insert the cover (1).

2. Insert the cover (3).

Service Instructions 610/630 - 00.0 - 10/2014 13

3.5.5 Removing and inserting the throat plate

(1) - Screws (2) - Throat plate

②

①

Fig. 5: Removing and inserting the throat plate

Work fundamentals

Removing the throat plate

1. Lift and lock the sewing foot.

2. Loosen both screws (1).

3. Remove the throat plate (2) upwards.

Inserting the throat plate

1. Lift and lock the sewing foot.

2. Insert the throat plate (2) from above.

3. Tighten both screws (1).

14 Service Instructions 610/630 - 00.0 - 10/2014

Work fundamentals

(1) - Screw
(2) - Screw

(3) - Top feed foot
(4) - Sewing foot

②

③

①

④

3.5.6 Removing and inserting the top feed foot and sewing foot

Fig. 6: Removing and inserting the top feed foot and sewing foot

Removing the top feed foot

1. Lift and lock the sewing foot.

2. Loosen the screw (2).

3. Remove the top feed foot (3).

Removing the sewing foot

1. Loosen the screw (1).

2. Remove the sewing foot (4).

Inserting the sewing foot

1. Lift and lock the sewing foot.

2. Fit the sewing foot (4).

3. Secure the sewing foot with screw (1).

Inserting the top feed foot

1. Insert the top feed foot (3).

2. Secure the top feed foot with screw (2).

Service Instructions 610/630 - 00.0 - 10/2014 15

3.5.7 Removing and installing the feeds

(1) - Screw
(2) - Screw

(3) - Main feed
(4) - Differential feed

①

③

②

④

Fig. 7: Removing and installing the feeds

Removing the feeds

Work fundamentals

1. Remove the screws (1,2).

2. Remove the main feed (3).

3. Remove the differential feed (4).

Installing the feeds

1. Install the main feed (3).

2. Tighten the screw (2).

3. Install the differential feed (4).

4. Tighten the screw (1).

16 Service Instructions 610/630 - 00.0 - 10/2014

Work fundamentals

(1) - Screws (2) - Oil pan

②

①

3.5.8 Removing and fitting the oil pan

Fig. 8: Removing and fitting the oil pan

Removing the oil pan

1. Loosen all 3 screws (1).

2. Remove the oil pan (2) downwards.

Fitting the oil pan

1. Fit the oil pan (2).

2. Secure the oil pan by tightening all 3 screws (1).

Service Instructions 610/630 - 00.0 - 10/2014 17

3.5.9 Removing and fitting the upper belt guard

(1) - Screws
(2) - Handwheel

(3) - Belt guard
(4) - Screws

②

③

①

④

Fig. 9: Removing and fitting the upper belt guard

Removing the handwheel

1. Loosen all 3 screws (1).

Work fundamentals

2. Remove the handwheel (2).

Removing the belt guard

1. Loosen all 4 screws (4) on the belt guard.

2. Remove the belt guard (3).

Fitting the belt guard

1. Fit the belt guard (3).

2. Secure the belt guard with all 4 screws (4).

Fitting the handwheel

1. Fit the handwheel (2).

2. Secure the handwheel by tightening the 3 screws (1).

18 Service Instructions 610/630 - 00.0 - 10/2014

Work fundamentals

(1) - Screws (2) - Belt guard

②

①

Risk of injury

Risk of crushing from moving parts
Switch off the sewing machine before removing or install-

ing individual components.

WARNING

3.5.10 Removing and fitting the lower belt guard

Fig. 10: Removing and fitting the lower belt guard

Removing the belt guard

1. Loosen both screws (1).

2. Remove the belt guard (2) to the right.

Fitting the belt guard

1. Carefully fit the belt guard (2). Ensure that you do not catch or squeeze
the cables while doing so.

2. Secure the belt guard with both screws (1).

3.6 Removing disruptive components

For some setting operations, you must first remove the thread cutting de­vice, needle protection, looper and looper mounting, in order to access the
components to be set.

The following is a description of how to remove and re-install the thread
cutting device, needle protection, looper and looper mounting.

Service Instructions 610/630 - 00.0 - 10/2014 19

Work fundamentals

(1) - Screw
(2) - Movable blade

(3) - Screws
(4) - Counter blade

③

②

②

④

①

(1) - Screw
(2) - Movable blade
(3) - Screws

(4) - Blade mounting
(5) - Ball lever

③

②

①

⑤

④

3.6.1 Removing and installing the thread cutting device

Fig. 11: Removing the thread cutting device.

Removing the blade

1. Loosen the screw (1).

2. Pull the movable blade (2) to the left out of the counter blade (4).

3. Loosen the screws (3) and remove the thread cutter upwards.

Installing the blade

Fig. 12: Installing the thread cutting device.

20 Service Instructions 610/630 - 00.0 - 10/2014

1. Position the thread cutter such that the blade holder (4) fits over the ball
lever (5).

2. Insert both screws (3) and tighten.

3. Push the movable blade (2) to the right between the counter blade and
the spring plate.

4. Secure the blade to the blade mounting (4) with the screw (1).

Work fundamentals

(1) - Screws
(2) - Support plate

(3) - Cylinder

②

③

①

(1) - Needle protection (2) - Screws

①

②

Fig. 13: Removing and installing the support plate.

Removing the support plate

1. Remove both screws (1).

2. Carefully remove the support plate (2) with mechanics and cylinder (3).

Installing the support plate

1. Carefully fit the support plate (2) with mechanics and cylinder (3).

2. Secure the support plate with both screws (1).

3.6.2 Removing and installing the needle protection mounting

Fig. 14: Removing and installing the needle protection mounting.

Service Instructions 610/630 - 00.0 - 10/2014 21

Removing the needle protection

1. Loosen both screws (2).

2. Carefully remove the needle protection (1) with mounting.

Work fundamentals

(1) - Adjusting screw
(2) - Screw
(3) - Adjusting screw

(4) - Looper mounting
(5) - Looper

⑤

②

①

④

③

Installing the needle protection

1. Carefully fit the needle protection (1) with mounting.

2. Secure the needle protection by tightening both screws (2).

Sequence

After removing the needle protection mounting, perform the following setting:

• Needle protection ( Section 10, pg. 56)

3.6.3 Removing and installing the looper and looper mounting

Fig. 15: Removing and installing the looper and looper mounting.

22 Service Instructions 610/630 - 00.0 - 10/2014

Removing the looper mounting and looper

1. Loosen both adjusting screws (1) and (3) slightly.

2. Loosen the screw (2).

3. Remove the looper mounting (4) with looper (5) from the shaft.

Installing the looper mounting and looper

1. Push the looper mounting (4) with looper (5) onto the shaft.

2. Tighten both adjusting screws (1) and (3) a little.

3. Tighten the screw (2) on the looper mounting completely.

Sequence

After removing the looper and the looper mounting, perform the following
setting:

• Looping stroke and looper gauge ( Section 9.6.1, pg. 50)

• Needle protection ( Section 10, pg. 56)

Work fundamentals

(1) - Flat surface (2) - Shaft

2

1

(1) - Locking pin
(2) - Marking

(3) - Handwheel
(4) - Adjusting disk with tracing grooves

①

③

①

F

E

D

④

C

B

②

A

3.7 Flat surfaces on shafts

Screwing onto

flat surfaces

Fig. 16: Flat surfaces on shafts

Some shafts have flat surfaces at places where components are to be at­tached. These make the connection more stable and setting easier.

Always ensure that the screws are completely flush with the flat surface.

3.8 Locking the sewing machine

For some settings, the machine must be locked. To this end, the locking
pin (1) from the accessory pack is inserted into a groove on the adjusting
disk, in order to block the arm shaft.

Fig. 17: Locking pin and tracing grooves on the adjusting disk

Service Instructions 610/630 - 00.0 - 10/2014 23

There are letters on the handwheel (3) for orientation. If you turn the hand­wheel such that one of the letters is next to the marking (2), this means
that the corresponding groove on the adjusting disk (4) is under the open­ing for the locking pin (1).

There are 6 locking positions for the following settings:

• Position A

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

to the groove in the arm shaft crank

• Position B

• Symmetry of the looper motion, i.e. when turning against the direc-

tion of rotation of the machine, the needle tip must also be in line
with the center of the needle as is the case for slot C.

Work fundamentals

(1) - Locking opening
(2) - Locking pin

(3) - Marking

①

②

③

• Position C

• Setting of the lower toothed belt wheel

• Symmetry of the looper motion

• Looping stroke

• Needle bar height

• Position D

• not used

• Position E

• Thread pick-up disk

• Holding position

• Position F

• 1st screw of the top feed lifting cam in the direction of rotation with

grooves of the pull rod.

• Stroke setting of the top feed foot

Fig. 18: Locking the sewing machine

24 Service Instructions 610/630 - 00.0 - 10/2014

Locking the machine

1. Turn the handwheel until the letter for the desired position is next to the
marking (3).

2. Insert the locking pin (2) through the locking opening (1) into the groove
of the adjusting disk.

The letters on the handwheel serve for general orientation. In order to hit
the groove precisely, you may have to turn the handwheel slightly.

Canceling the lock

1. Pull out the locking pin (2).

Gauge and key set

4 Gauge and key set

The gauges listed below enable precise setting and testing of the classes
610 and 630.

The locking pin listed is included in the accessory pack with every machine
supplied. It can be used to lock handwheel positions A - F that are required
for the machine settings.

Fig. 19: Gauge and key set

Gauge

Order number

0933 000735 Setting the rocker bolt in the looper

0933 000739 K

9301 022608
included in the
accessory
pack

Setting

drive housing

Setting the looper drive housing

Locking pin 5H8x60
For locking the handwheel in one
of the setting positions A - F

0171 000981 To measure the needle evasive

movement (ellipsis width) of the
looper drive.
If you have your own dial gauge,
only the clamping sleeve 171 984
and measuring pin 933 748 are
required.

0171 290010 Slant of the looper of 89° 30’

Service Instructions 610/630 - 00.0 - 10/2014 25

Gauge and key set

Gauge

Order number

0933 080192 Uniform looper movement

0933 000740 Height of the thread take-up disk

0271 000767 Height of the feed

Setting

for symmetry

0178 800024 Calibrating foot

0558 006060 Adjusting needle Synchronizing

the feeds

0178 800033 PTFE strips Synchronizing the feeds

26 Service Instructions 610/630 - 00.0 - 10/2014

Gauge and key set

Gauge

Order number

0178 800010 Gauge bottom feed Synchronizing

0238 010353 Cylinder pin 6H8x70

9210 013397 Knurled screw M5x16

Setting

the feeds

Service Instructions 610/630 - 00.0 - 10/2014 27

Setting the adjusting disk to the arm shaft crank

(1) - Groove in the arm shaft crank
(2) - Hole for locking pin

(3) - Hole for locking pin

②

③

①

Risk of injury
Risk of crushing from moving parts

Switch off the sewing machine before setting the adjusting
disk.

WARNING

5 Setting the adjusting disk to the arm shaft crank

The deepest slot A of the adjusting disk should be in line with the groove
(1) in the arm shaft crank.

(Only when the adjusting disk is in this position are the settings to be made
in the other slots also correct.)

Fig. 20: Adjusting disk to the arm shaft

Check correct setting

Check the factory setting using two locking pins (2, 3) (alternatively twist
drill 5 mm).

Faults due to incorrect setting

• All function sequences are disrupted.

Cover

• Remove the head cover ( Section 3.5.2, pg. 12)

• Remove the arm cover ( Section 3.5.3, pg. 12)

28 Service Instructions 610/630 - 00.0 - 10/2014

Setting the adjusting disk to the arm shaft crank

(1) - Groove in the arm shaft crank
(2) - Top toothed belt wheel

(3) - Toothed belt
(4) - Locking pin
(5) - Locking pin

③

①

②

④

⑤

Fig. 21: Setting the adjusting disk to the arm shaft crank

Setting steps

1. Remove the toothed belt (3).

2. Loosen the screws on the upper toothed belt wheel (2).

3. Insert the locking pin (4) in the groove (1) of the arm shaft crank.

4. Turn the handwheel, until the locking pin (5) can be inserted into the
deepest slot (A) of the adjusting disk.

5. Tighten the screws on the upper toothed belt wheel (2).

6. Fit the toothed belt.

Service Instructions 610/630 - 00.0 - 10/2014 29

Setting the holding position of the machine

(1) - Edge of the take-up disk
(2) - Ring

(3) - Threaded pin

②

③

①

Machine damage and malfunctions possible!
When turning the ring, make sure that the ring does not move axially

onto the arm shaft.
Ensure that there is sufficient clearance on both sides in the slit of

the hybrid light barrier.

NOTE

6 Setting the holding position of the machine

Check correct setting

After the machine is switched on, the needle is in the reference position,
top dead center. In handwheel position E, the machine is in this holding
position.

Cover

• Remove the arm cover ( Section 3.5.3, pg. 12)

Fig. 22: Setting the holding position

Setting steps

1. Setting the handwheel position E.

2. Loosen the threaded pin (3) of the ring (2) and turn the ring (2) accord­ingly.

3. Tighten the threaded pin (3).

30 Service Instructions 610/630 - 00.0 - 10/2014

Setting the lower toothed belt wheel

Risk of injury
Risk of crushing from moving parts

Switch off the sewing machine before adjusting the lower
toothed belt wheel.

WARNING

(1) - Screws
(2) - Lower toothed belt wheel

(3) - Arm shaft crank with tracing grooves

C

②

①

③

7 Setting the lower toothed belt wheel

Check correct setting

When positioning the toothed belt on the lower toothed belt wheel (2) it is
important to ensure that both screws (1) are in slot C in the position shown,
i.e., easily accessible with a hex key.

Faults due to incorrect setting

• Setting the machine is made more difficult.

Fig. 23: Setting the lower toothed belt wheel

Service Instructions 610/630 - 00.0 - 10/2014 31

Setting steps

1. Turn the lower toothed belt wheel (2) into the position shown.

2. Lock machine in position C ( Section 3.8, pg. 23).

3. Place toothed belt on upper toothed belt wheel.

Sequence

After completely repositioning the toothed belt between the upper and low­er shaft, make the following settings:

• Symmetry of the looper motion ( Section 9.4, pg. 46)

• Looping stroke ( Section 9.6.1, pg. 50)

• Needle bar height ( Section 9.6.2, pg. 51)

• Thrust setting of the top feed foot ( Section 12.3, pg. 66)

• Stroke setting of the top feed foot ( Section 12.1, pg. 63)

Setting the sewing foot

(1) - Screw (2) - End stop

②

①

8 Setting the sewing foot

8.1 Setting the lifter stroke

When the pedal is pressed backwards half-way, the sewing feet are lifted
during sewing, e.g. to move the material being sewn.

Correct setting

The distance between the lifted sewing feet and the throat plate is pre-set
to 9 mm on delivery.

Cover

Remove the head cover ( Section 3.5.2, pg. 12)

Fig. 24: Setting the sewing foot lifting height

Setting steps

1. Loosen the screw (1).

2. Move the end stop (2) upwards.

3. Tighten the screw (1).

32 Service Instructions 610/630 - 00.0 - 10/2014

Setting the sewing foot

The tulle foot can be damaged or broken!
If the tulle foot is lowered too quickly, it can be damaged or de-

stroyed. Set the lowering speed appropriately.

NOTE

(1) - Throttle

①

8.2 Setting the speed of foot lifting

Correct setting

1. Close throttle completely (clockwise).

2. Open the throttle by turning it three full revolutions counterclockwise.

Cover

Removing the handwheel cover.

Fig. 25: Setting the speed of foot lifting

Setting steps

1. Faster lowering: Turn the throttle counterclockwise.

2. Slower lowering: Turn the throttle clockwise.

Service Instructions 610/630 - 00.0 - 10/2014 33

Setting the looper

Risk of injury
Risk of crushing from moving parts

Switch off the sewing machine before setting the rocker
bolt and the lower shaft bearing.

WARNING

(1) - Rocker bolt (2) - Left lower shaft bearing

②

①

9 Setting the looper

9.1 Setting the rocker bolt and left lower shaft bearing

Fig. 26: Setting the rocker bolt and left lower shaft bearing

Cover

• Remove the covers on the base plate ( Section 3.5.4, pg. 13)

Sequence

• Remove the needle

• Remove the throat plate ( Section 3.5.5, pg. 14)

• Remove the oil pan ( Section 3.5.8, pg. 17)

• Remove the thread cutting device ( Section 3.6.1, pg. 20)

• Drain the oil in the looper drive housing ( Section 9.1.1, pg. 35)

• Remove the needle protection ( Section 3.6.2, pg. 21)

• Remove the looper mounting ( Section 3.6.3, pg. 22)

• Remove the looper drive housing ( Section 9.1.2, pg. 36)

• Set the lower bearing and rocker bolt ( Section 9.1, pg. 34)

34 Service Instructions 610/630 - 00.0 - 10/2014

Setting the looper

Risk of environmental damage from lubricant

Lubricant is a pollutant and must not enter the sewage system
or the soil.

Collect waste lubricant carefully and dispose of it and greasy
machine parts in accordance with the applicable statutory reg­ulations.

Please observe all safety and environmental protection in­structions issued by the lubricant manufacturer.

ATTENTION

(1) - Looper drive housing
(2) - Oil drain screw

(3) - Oil pan
(4) - Mark

②

①

③

④

9.1.1 Draining and filling the oil in the looper drive housing

Fig. 27: Draining and filling the oil in the looper drive housing

Service Instructions 610/630 - 00.0 - 10/2014 35

Draining the oil

1. Tilt the machine backwards ( Section 3.5.1, pg. 11).

2. Loosen the oil drain screw (2).

3. Place an appropriate collection tray in the oil pan (3).

4. Carefully tilt the machine backward and allow the oil to drain out com­pletely.

Topping up the oil

1. Tilt the machine backwards ( Section 3.5.1, pg. 11).

2. Top up the looper drive housing (1) with the oil, DA 10 up to the upper
mark (4) on the sight glass.

3. Screw in the oil drain screw (2).

9.1.2 Removing and fitting the looper drive housing

Risk of injury
Risk of crushing from moving parts

Switch off the sewing machine before removing or fitting
the looper drive housing.

WARNING

(1) - Looper drive housing
(2) - Clamping screw

(3) - Lower shaft

①

③

②

Fig. 28: Removing and fitting the looper drive housing

Setting the looper

Removing the looper drive housing

1. Tilt the machine backwards ( Section 3.5.1, pg. 11).

2. Loosen the clamping screw (2).

3. Pull the looper drive housing (1) carefully off to the left. While doing so,
slowly turn the lower shaft (3).

Fitting the looper drive housing

1. Push the looper drive housing (1) carefully on to the right. While doing
so, slowly turn the lower shaft (3) until the rocker bolt is engaged in its
mounting.

2. Tighten the clamping screw (2).

Sequence

After installing a completely new looper drive housing, make the following
settings:

• Set the looper drive housing ( Section 9.2, pg. 40)

• Set the needle evasive movement ( Section 9.3, pg. 42)

• Set the symmetry of the looper motion ( Section 9.4, pg. 46)

• Set the looper in the looper mounting ( Section 9.5, pg. 47)

• Set the looper and needle bar height ( Section 9.6, pg. 49)

36 Service Instructions 610/630 - 00.0 - 10/2014

Setting the looper

Risk of injury
Risk of crushing from moving parts

Switch off the sewing machine before adjusting the lower
shaft bearing.

WARNING

(1) - Gauge
(2) - Rocker bolt
(3) - Face of the lower shaft

(4) - Screw
(5) - Clamping screws
(6) - Lower shaft bearing

①

②

③

⑥

⑤

④

9.1.3 Setting the left lower shaft bearing

Fig. 29: Setting the left lower shaft bearing

Check correct setting

The distance from the center of the needle to the start of the left lower
shaft bearing (6) is to be 39.8 mm and from the center of the needle to the
end of the rocker bolt is to be 38.8 mm.

Setting steps

1. Screw the gauge (1), order no. 0933 000735, onto the needle plate
support.

2. Loosen both clamping screws (5).

3. Move the lower shaft bearing (6) to the gauge (1).

4. Tighten both clamping screws (5).

Faults due to incorrect setting

• Damage to the looper

• Damage to the needle

• Damage to the thread cutter

• Missed stitches

• Thread breakage

Service Instructions 610/630 - 00.0 - 10/2014 37

9.1.4 Setting the rocker bolt

Risk of injury
Risk of crushing from moving parts

Switch off the sewing machine before adjusting the rocker
bolt.

WARNING

(1) - Gauge
(2) - Rocker bolt
(3) - Face of the lower shaft

(4) - Grease cap
(5) - Screws

①

②

④

⑤

③

Fig. 30: Setting the rocker bolt

Setting the looper

Check correct setting

The rocker bolt (2) must be pushed up against the face (3) of the lower
shaft.

Setting steps

1. Remove the grease cap (4).
The second fastening screw (5) is accessible from the upper side of the
base plate.

2. Screw the gauge (1), order no. 0933 000735, onto the needle plate
support.

38 Service Instructions 610/630 - 00.0 - 10/2014

Setting the looper

(1) - Gauge
(2) - Rocker bolt
(3) - Screw
(4) - Lower shaft bearing

(5) - Toothed wheel
(6) - Cam
(7) - Set collar
(8) - Lower shaft

①

②

⑥

⑤

⑦

⑧

④

③

Fig. 31: Setting the rocker bolt

3. Loosen the set collar (7), cam (6), toothed wheel (5) and the screw (3).

4. Slide the lower shaft (8) such that there is a distance of 1 mm between
the lower shaft bearing (4) and the rocker bolt (2) or the rocker bolt is
against the gauge (1).

5. Fasten the set collar (7) and cam (6), tighten the screw (3) and align the
toothed wheel (5).

6. Tighten the screws.

7. Check the movement of the toothed belt on the lower toothed belt wheel.
If required, align the lower toothed belt wheel.

8. Fit the looper drive housing ( Section 9.1.2, pg. 36) and fill with DA 10

Faults due to incorrect setting

• Damage to the looper

• Damage to the needle

• Damage to the thread cutter

• Missed stitches

• Thread breakage

oil ( Section 9.1.1, pg. 35).

Service Instructions 610/630 - 00.0 - 10/2014 39

Setting the looper

Risk of injury
Crushing and needle-prick injuries caused by moving

and pointed parts

Switch off the sewing machine before adjusting the looper
drive housing.

WARNING

(1) - Gauge
(2) - Looper shaft
(3) - Looper shaft lower edge

(4) - Clamping screw
(5) - Needle plate support

③

④

②

①

⑤

Sequence

After setting the rocker bolts and left lower shaft, make the following set­tings:

• Fit all parts

• Symmetry of the looper motion ( Section 9.4, pg. 46)

• Looping stroke and looper gauge to the needle ( Section 9.6.1, pg. 50)

• Looper and needle bar height ( Section 9.6, pg. 49)

9.2 Setting the looper drive housing

Fig. 32: Setting the looper drive housing

Check correct setting

The needle point should point to the center of the looper shaft (2) and the looper
shaft lower edge should be parallel to the underside of the needle plate.

This corresponds to a distance of 50.5 mm between the lower edge of the
looper shaft (3) and the needle plate support (5).

40 Service Instructions 610/630 - 00.0 - 10/2014

Faults due to incorrect setting

• Damage to the looper

• Damage to the needle

Setting the looper

(1) - Gauge
(2) - Looper shaft
(3) - Looper shaft lower edge

(4) - Clamping screw
(5) - Needle plate support

③

④

②

⑤

①

• Damage to the thread cutter

• Missed stitches

• Thread breakage

Sequence

• Remove the needle

• Remove the throat plate ( Section 3.5.5, pg. 14)

• Remove the oil pan ( Section 3.5.8, pg. 17)

• Removing the thread cutting device ( Section 3.6.1, pg. 20)

• Remove the needle protection ( Section 3.6.2, pg. 21)

• Remove the looper mounting ( Section 3.6.3, pg. 22)

Fig. 33: Setting the looper drive housing

Service Instructions 610/630 - 00.0 - 10/2014 41

Setting steps

1. Screw the gauge (1), order no. 0933 000739 K, onto the needle plate
support.

2. Loosen the clamping screw (4).

3. Align the looper drive housing such that the looper shaft (2) lies in the
cutout of the gauge (1).

4. Tighten the clamping screw (4).

Sequence

After setting the looper drive housing, make the following settings:

• Symmetry of the looper motion ( Section 9.4, pg. 46)

• Looping stroke and looper gauge to the needle ( Section 9.6.1, pg. 50)

• Looper and needle bar height ( Section 9.6, pg. 49)

Setting the looper

Risk of injury
Risk of crushing from moving parts

Switch off the sewing machine before adjusting the needle
evasive movement.

WARNING

(1) - Point of the needle
(2) - Looper

(b) - Looper thickness
(a) - Needle thickness

①

a

b

②

E = a + b + 0.1 + X

9.3 Setting the needle evasive movement (ellipsis width)

Fig. 34: Setting the needle evasive movement

Check correct setting

The needle evasive movement is correctly set if during the looper move­ment from right to left, the distance to the needle is 0.1 mm and during the
looper movement from left to right the point (1) of the descending needle
is at the back of the looper (2) at the moment when the looper and needle
take up the position shown in the above sketch.

The precise dimension of the evasive movement depends on the needle
system and the needle thickness.

It must therefore be calculated using the following formula:

42 Service Instructions 610/630 - 00.0 - 10/2014

Setting the looper

(1) - Gauge
(2) - Lower shaft

(3) - Looper shaft
(4) - Clamping sleeve

①

④

③

②

Example using a 934 SIN/Nm 110 needle

Needle thickness at "a"= 0.7 mm
Looper thickness at "b"= 1.4 mm
Distance from looper tip to the needle = 0.1 mm
For larger needle thickness 110 Nm "X" *= 0.1 mm
Ellipsis width "E"= 2.3 mm

*X = larger dimension a for larger needle thicknesses.
X for Nm 100 = 0 mm
X for Nm 110 and 120 = 0.1 mm
X for Nm 130 = 0.2 mm
To set, move the lower shaft axially
To the right = ellipsis width is smaller
To the left = ellipsis width is larger

9.3.1 Setting the needle evasive movement

Fig. 35: Setting the needle evasive movement

Setting steps

1. Screw on the clamping sleeve (4) and fit the dial gauge (1), order no.
171 981.

2. Turn the handwheel to position the looper shaft (3) at its lowest point.

3. Set the measured value 0 on the dial gauge (1).

4. Turn the handwheel to position the looper shaft (3) at its highest point.

5. Read the difference off the dial gauge.

Service Instructions 610/630 - 00.0 - 10/2014 43

Setting the looper

(1) - Screws
(2) - Needle protection

②

①

Important

If the dimension does not match the calculated dimension for the ellipsis
width, the lower shaft (2) must be loosened and adjusted ( Section

9.3.3, pg. 45).

When adjusting in the axial direction, the ellipsis width changes in the ratio
of 1:2, i.e., when the lower shaft is moved, e.g. by 0.2 mm, the ellipsis
width changes by 0.1 mm.

Faults due to incorrect setting

• Damage to the looper

• Damage to the needle

• Missed stitches

• Thread breakage

9.3.2 Resetting the needle protection

Fig. 36: Resetting the needle protection

Setting steps

1. Loosen the screws (1) and reset the needle protection (2).

44 Service Instructions 610/630 - 00.0 - 10/2014

Setting the looper

(1) - Toothed wheel
(2) - Cam
(3) - Set collar

(4) - Lower shaft
(5) - Right set collar bearing

①

②

③

④

⑤

9.3.3 Setting the lower shaft

Fig. 37: Setting the lower shaft

Setting steps

1. Remove the throat plate and feed ( Section 3.5.5, pg. 14).

2. Loosen the toothed wheel (1), cam (2), set collar (3) and the right set
collar bearing (5).

3. Push the lower shaft (4) in the appropriate direction until the calculated
dimension is achieved.

4. Set the cam (2) and set collar (3) such that a tight fit is ensured for the
lower shaft (4).

5. Align the toothed wheel (1) to the upper toothed wheel and screw tight.

6. Tighten the screws of the right set collar bearing (5).

Sequence

After setting the rocker bolts and left lower shaft, make the following set­tings:

• Symmetry of the looper motion ( Section 9.4, pg. 46)

• Looping stroke and looper gauge to the needle ( Section 9.6.1, pg. 50)

Service Instructions 610/630 - 00.0 - 10/2014 45

9.4 Setting the symmetry of the looper motion

Risk of injury
Risk of crushing from moving parts

Switch off the sewing machine before setting the symme­try of the looper motion.

WARNING

(1) - Center of the needle (2) - Looper tip

①

①

②

②

Slot C Slot B

Fig. 38: Setting the symmetry of the looper motion

Setting the looper

Check correct setting

Setting the symmetry means that the looper tip is in line with the center of
the needle for machines locked both in slot C and slot B.

The looper tip is to be behind the needle in slot C and in front of it in slot B.

Faults

• Damage to the looper

• Damage to the needle

• Missed stitches

• Thread breakage

46 Service Instructions 610/630 - 00.0 - 10/2014

Setting the looper

(1) - Indicator
(2) - Gauge

(3) - Lower toothed belt wheel

①

②

③

Risk of injury
Crushing and needle-prick injuries caused by moving

and pointed parts

Switch off the sewing machine before setting the looper.

WARNING

Fig. 39: Setting the symmetry of the looper motion

Sequence

Before making adjustments, the following parts must be removed:

• Thread cutting device ( Section 3.6.1, pg. 20)

Setting steps

1. To ensure precise adjustments, secure the gauge (2), order number
933 80192, to the looper drive housing and the indicator (1) to the looper
shaft.

2. Loosen the screws on the lower toothed belt wheel (3).

3. Turn the lower shaft such that the indicator (1) is above the marking on
the gauge (2) both in slot C and B.

4. When you turn the lower shaft, the indicator must swing out to the left.

5. Tighten the screws on the toothed belt wheel (3).

Information

If you do not have a gauge available, perform the adjustment as shown in
the drawings.

9.5 Setting the looper in the looper mounting

Check correct setting

The front of the looper should be positioned at an angle of 89° 30’ to the
edge of the machine plate.

If there are two bloopers, the rear one must be aligned and tightened first,
followed by the front one.

Setting is performed using the gauge, order no. 0171 290010.

Service Instructions 610/630 - 00.0 - 10/2014 47

Setting the looper

(1) - Thread cutter
(2) - Feed

(3) - Gauge

①

②

③

(4) - Screw (5) - Looper

④

⑤

Faults due to incorrect setting

• Damage to the looper

• Damage to the needle

• Missed stitches

• Thread breakage

Cover

• Remove the covers on the base plate ( Section 3.5.4, pg. 13)

• Remove the throat plate ( Section 3.5.5, pg. 14)

• Remove the feed (2) ( Section 3.5.7, pg. 16).

• Remove the thread cutter (1) ( Section 3.6.1, pg. 20).

Fig. 40: Setting the looper in the looper mounting

Setting steps

1. Loosen the screw (4).

Fig. 41: Looper and looper mounting

2. Place the gauge (3), order no. 0171 290010, on the right side of the
base plate cutout.

3. Move the looper (5) to the gauge and tighten the screw (4).

48 Service Instructions 610/630 - 00.0 - 10/2014

Setting the looper

①

②

(1) - Center line of the needle (2) - Looper tip

Slot C Slot B

9.6 Setting the looper and needle bar height

The following three settings must be coordinated:

• Looping stroke position and looping stroke

• Needle bar height

• Looper gauge to the needle

The looping stroke position is the position of the looper, in which the
looper tip points precisely at the center line of the needle.

The looping stroke is the length of the distance from the bottom dead
center of the needle bar to the height reached by the looper in the looping
stroke position. The looping stroke is 3.5 mm.

Looper gauge

The distance between the looper tip and the needle groove is to be

0.1 mm.

Fig. 42: Looping stroke position

Check correct setting

When the needle (1) has risen by 3.5 mm from its bottom dead center as
a result of turning the handwheel in the direction of rotation, the looper tip
(2) must be at the center of the needle. - Slot C of the adjusting disk.

This setting must also be present in the opposite direction of rotation. - Slot
B of the adjusting disk. For more on this, see also ( Section 9.4, pg. 46)
Symmetry of the looper motion.

Faults due to incorrect setting

• Damage to the looper

• Damage to the needle

• Missed stitches

• Thread breakage

Sequence

Prerequisite:

• A straight and undamaged needle must be used. ( Operating Instruc-

tions, Replacing needles)

Service Instructions 610/630 - 00.0 - 10/2014 49

Setting the looper

Risk of injury
Crushing and needle-prick injuries caused by moving

and pointed parts.

Switch off the sewing machine before setting the looping
stroke position and the looper gauge.

WARNING

⑧

(1) - Needle bar
(2) - Needle
(3) - Adjusting screw
(4) - Screw

(5) - Adjusting screw
(6) - Looper mounting
(7) - Looper tip
(8) - Groove of the needle

①

②

④

③

⑤

⑦

⑥

9.6.1 Setting the looping stroke position and looper gauge

Cover

• Remove the covers on the base plate ( Section 3.5.4, pg. 13)

• Remove the throat plate ( Section 3.5.5, pg. 14)

Fig. 43: Setting the looping stroke position and looper gauge

50 Service Instructions 610/630 - 00.0 - 10/2014

Setting steps

1. Turn the needle bar (1) into the looping stroke position.

2. Lock the machine in slot C.

3. Loosen the screw (4).

4. Set the looping stroke position:
Place the looper tip (6) behind the needle (2) on the center line. To do
this, turn the adjusting screws (3) and (5) accordingly.

5. Set the looper gauge:
Set a distance of 0.1 mm by moving the looper mounting (6) axially
between the looper tip and the needle groove (8).

6. Tighten the screw (4).

Sequence

After setting the looping stroke position and looper gauge, make the fol­lowing settings:

• Needle bar height ( Section 9.6.2, pg. 51)

• Check the symmetry of the looper motion (Pos. B and C) ( Section

9.4, pg. 46).

7. After definitively aligning the looping stroke position, looper gauge and
needle bar: cancel the lock ( pg. 24).

Setting the looper

Risk of injury
Crushing and needle-prick injuries caused by moving

and pointed parts.

Switch off the sewing machine before checking and setting
the needle bar height.

WARNING

②

③

④

(1) - Needle bar
(2) - Needle bar fastening screw

(3) - Lower edge of the needle eye
(4) - Looper eye

①

9.6.2 Setting the needle bar height

Cover

• Head cover ( Section 3.5.2, pg. 12)

Fig. 44: Needle bar height

Check correct setting

When the looper eye (4) is in line with the middle of the needle, the lower
edge of the needle eye (3) and the upper edge of the looper eye should
be at the same level.

Faults due to incorrect setting

• Missed stitches

• Thread breakage

Sequence

A straight and undamaged needle must be used.
( Operating Instructions, Replacing needles)

Service Instructions 610/630 - 00.0 - 10/2014 51

Setting the looper

②

③

④

(1) - Needle bar
(2) - Screw

(3) - Lower edge of the needle eye
(4) - Lower edge of the looper eye

①

Fig. 45: Setting the needle bar height

Setting steps

1. Loosen the screw (2).

2. Set the needle bar height such that the lower edge of the needle eye
(3) and the upper edge of the looper eye (4) are at the same level.

Important: Do not turn the needle bar to the side while doing this.

3. Tighten the screw (2).

Sequence

After setting the needle bar height, make the following settings:

• Looping stroke position and looper gauge ( Section 9.6.1, pg. 50).

4. After definitively aligning the looping stroke position, looper gauge and
needle bar: cancel the lock ( pg. 24).

52 Service Instructions 610/630 - 00.0 - 10/2014

Setting the looper

Risk of injury
Risk of crushing from moving parts

Switch off the sewing machine before setting the retention
spring.

WARNING

(1) - Holding point
(2) - Retention spring

(3) - Looper
(4) - Needle thread loop

①

②

③

④

9.7 Setting the retention spring on the looper

Check correct setting

When the looper moves from right to left the needle thread loop (4) must
slide to above the holding point (1) between the retention spring (2) and
the looper (3).

When the looper moves from left to right the needle thread loop should
be held at the holding point (1) until the descending needle has entered
the thread triangle on the left in front of the needle thread loop (4).

As the needle moves to its upper position and the looper moves to the left,
the needle point should pass the retention spring (2) at a distance of ap­prox. 0.5 mm.

Faults due to incorrect setting

• Missed stitches

• Thread breakage

Cover

Remove the covers on the base plate ( Section 3.5.4, pg. 13)
Remove the throat plate ( Section 3.5.5, pg. 14)

Fig. 46: Retention spring on the looper

Service Instructions 610/630 - 00.0 - 10/2014 53

Setting the looper

(1) - Holding point
(2) - Retention spring

(3) - Looper
(5) - Screw

①

②

③

⑤

Fig. 47: Retention spring on the looper

Setting steps

1. Bend the retention spring (2) so that it rests flat against the looper (3).
Make sure that the pressure is greatest in front at the holding point (1).

2. Loosen the screw (5).

3. Set the distance to 0.5 mm by sliding the retention spring (2).

Important:
The force of the pressure of the spring against the looper must be checked

when the machine is completed and threaded.

4. Tilt the upper part of the machine backwards and turn by hand.

5. Check the described stitch formation during the right-to-left and left-to­right looper motion.
If required, if the needle thread loop is not pushed beyond the holding
point (1) reduce the pressure of the retention spring by bending it, or
increase the pressure if the needle thread loop is not held at the holding
point (1) until the needle enters the thread triangle on the left in front
of the needle thread loop.

Sequence

Perform the sewing process and check the stitch formation.

54 Service Instructions 610/630 - 00.0 - 10/2014

Setting the looper

Risk of injury
Risk of crushing from moving parts

Switch off the sewing machine before adjusting the thread
take-up.

WARNING

(1) - Thread down-holder
(2) - Thread down-holder, lower bar
(3) - Looper thread take-up:

Hole for thread guide

(4) - Looper thread take-up edge:

Scale reading point
(5) - Looper thread take-up
(6) - Fastening screws

④

⑥

⑤

①

③

②

9.8 Setting the stitch length-controlled thread take-up

Check correct setting

The stitch length-controlled thread take-up (1) enables an automatic ad­justment of the looper thread quantity to the relevant stitch length.

When adjusting the stitch length, the thread take-up is actuated according­ly via the lower guide shaft.

The setting values are easily reproduced using a scale (2).

Faults due to incorrect setting

• Missed stitches

• Thread breakage

Fig. 48: Adjusting the looper thread take-up

Service Instructions 610/630 - 00.0 - 10/2014 55

Adjusting the looper thread take-up

1. Tilt the upper part of the machine backwards.

2. Loosen the fastening screws (6).

3. Move the looper thread take-up (5):

• Tighter seam:
Move front edge (4) in the direction of 0.

• More elastic seam:
Move front edge (4) in the direction of 5.

Setting the needle protection

Risk of injury
Risk of crushing from moving parts

Switch off the sewing machine before setting the needle
protection.

WARNING

Important:

Ensure that the height of the looper thread take-up (5) is not changed. The
hole (3) must always remain above the bar (2) of the thread down­holder (1).

4. Tighten the fastening screws (6).

5. Straighten up the upper part of the machine.

Important:
For an extreme setting, e.g. shortest possible stitch length and largest

possible thread quantity (flexible seam) it must be ensured that it is possi­ble for the needle to enter into the thread triangle again securely.

Overly large thread quantities can cause missed stitches.
If for the above settings the stitch length must be increased significantly,

then the thread guide must be reset in direction 0.
Otherwise the looper thread could come off in area X of the thread take-

up disk.
The looper thread would not, during the backward motion of the looper, be

pulled back through the take-up disk as required.

10 Setting the needle protection

Check correct setting

If the looper tip (1) moves to the left and reaches the needle, the needle
point should lie on the looper protection.
If one were to press against the needle at this time, it should not be pos­sible to press it into the path of the looper tip.
In the lowest needle position, half of the needle eye (2) must remain clear.

Faults due to incorrect setting

• Damage to the looper

• Damage to the needle

• Missed stitches

• Thread breakage

Sequence

Prerequisite:
A straight and undamaged needle must be used ( Operating Instruc-
tions, Replacing needles)

56 Service Instructions 610/630 - 00.0 - 10/2014

Setting the needle protection

(1) - Looper tip (2) - Needle eye

②

①

(1) - Looper tip
(2) - Needle eye

(3) - Screw
(4) - Screw

③

②

①

④

Cover

• Remove the covers on the base plate ( Section 3.5.4, pg. 13)

• Remove the throat plate ( Section 3.5.5, pg. 14)

Fig. 49: Setting the needle protection

Fig. 50: Setting the needle protection

Setting steps

1. Loosen the screw (3).

2. Adjust the height of the needle protection accordingly.

3. Tighten the screw (3).

4. Loosen screws (4).

5. Move the needle protection to the needle point.

6. Tighten the screws (4).

Important:

The needle must not be pushed aside any more than is required.

Service Instructions 610/630 - 00.0 - 10/2014 57

Differential top and bottom feed

Risk of injury
Risk of crushing from moving parts

Switch off the sewing machine before setting the feed.

WARNING

(1) - Stroke cam (2) - Thrust cam

②

①

11 Differential top and bottom feed

11.1 Setting the feed motion of the feeds

Correct setting

After passing the dead center of the needle bar, the feed should perform
another small thrust motion. The groove of the two cams (1) and (2) on the
lower shaft both point forwards.

Cover

• Tilt the machine ( Section 3.5.1, pg. 11)

• Remove the oil pan ( Section 3.5.8, pg. 17).

Fig. 51: Feed motion of the feeds

Setting steps

1. Lock machine in position D.

2. Loosen both screws on the stroke cam (1).

3. Align the groove forwards (3 o'clock).

4. Tighten both screws on the stroke cam (1).

5. Loosen both screws on the thrust cam (2).

6. Align the groove forwards (3 o'clock).

7. Tighten both screws on the thrust cam (2).

58 Service Instructions 610/630 - 00.0 - 10/2014

Differential top and bottom feed

Risk of injury
Risk of crushing from moving parts

Switch off the sewing machine before checking and setting
the stroke motion.

WARNING

(1) - Screws
(2) - Stroke cam

(3) - Screws
(4) - Grease cap

②

①

④

③

11.2 Setting the stroke motion of the feed

Check correct setting

When the needle eye of the descending needle reaches the hole of the
throat plate, the descending tooth points of the feed should be level with
the throat plate surface. This setting corresponds to slot D of the adjusting
disk.

Faults due to incorrect setting

• Damage to the looper

• Damage to the needle

• Missed stitches

• Thread breakage

Cover

• Tilt the machine ( Section 3.5.1, pg. 11)

• Remove the oil pan ( Section 3.5.8, pg. 17)

Fig. 52: Stroke motion of the feeds

Setting steps

1. Loosen both screws (3) and remove the grease cap (4).
The second screw (3) is accessible from the upper side of the base plate.

1. Loosen both screws of the stroke cam (2).

2. Setting the stroke cam:

•Turn clockwise: earlier stroke

•Turn counterclockwise: later stroke

3. Position the grease cap (4) and secure with both screws (3).

Service Instructions 610/630 - 00.0 - 10/2014 59

Differential top and bottom feed

Risk of injury
Risk of crushing from moving parts

Switch off the sewing machine before setting the angle of
incline and the height of the feeds.

WARNING

(1) - Screw
(2) - Left feed mounting

(3) - Right feed mounting
(4) - Screw

②

①

④

③

11.3 Setting the angle of incline and the height of the feeds

Check correct setting

The main feed (right feed mounting - 3) is in the highest position 1.1 mm
and parallel above the surface of the throat plate.

The differential feed (left feed mounting - 2) is in the highest position

1.5 mm and parallel above the surface of the throat plate.

Faults due to incorrect setting

• Damage to the looper

• Damage to the needle

Fig. 53: Height of the feeds

Setting steps

1. Loosen the screws (1) and (4).

2. Setting the height of the feed mounting:

• Main feed (3): 1.1 mm

• Differential feed (2): 1.5 mm

3. Tighten the screws (1) and (4).

60 Service Instructions 610/630 - 00.0 - 10/2014

Differential top and bottom feed

Risk of injury
Risk of crushing from moving parts

Switch off the sewing machine before setting the feed.

WARNING

(1) - Bottom feed gauge
(2) - 6-pin (0238 0103553)

(3) - Clamping screw

②①③

(4) - Main feed
(5) - Differential top feed

(6) - Differential bottom feed

⑤

④

⑥

11.4 Basic setting of bottom feed guides

Faults due to incorrect setting

• Damage to the throat plate

• Damage to the feeds

•Noise

Cover

• Remove the arm cover ( Section 3.5.3, pg. 12)

• Tilt the machine ( Section 3.5.1, pg. 11)

Fig. 54: Feeds in the longitudinal direction

Fig. 55: Arrangement of feeds

Service Instructions 610/630 - 00.0 - 10/2014 61

Differential top and bottom feed

(7) - Roller (8) - Switching flag

⑧

⑦

Setting steps

1. Secure the bottom feed gauge (0178 800010) with two M5x16 screws
or knurled screw (9210 013397).

2. Turn both switching flags (8) of both upper stepper motors (4,6) such
that the rollers (7) are at the largest diameter of the switching flags.

 The edge of the switching flag lies on the roller.

Fig. 56: Switching flags

3. Loosen the clamping screws (3) for both guides.

4. Insert 6-pin (2) into the left hole of one guide and turn the guides such
that the 6-pin (2) comes to rest against the gauge (1).

5. Insert 6-pin into the right hole of the other guide and turn the guides
such that the 6-pin (2) comes to rest against the gauge (1).

6. Secure the clamping screws (3) for both guides.

7. Remove the bottom feed gauge.

62 Service Instructions 610/630 - 00.0 - 10/2014

Foot top feed

Risk of injury
Risk of crushing from moving parts

Switch off the sewing machine before setting the stroke.

WARNING

(1) - Foot fastening block
(2) - Top feed foot

(3) - Bearing block
(4) - Rocker lever

①

②

③

④

71.5 mm

12 Foot top feed

Correct setting

The top feed is synchronized with the bottom feed. A light stroke is pro­duced; i.e. in the feed phase, the center foot pressure is reduced. The cen­ter foot pressure and top feed foot pressure can be adjusted separately.

12.1 Setting the stroke height of the top feed

Correct setting

The top feed foot (2) has a maximum stroke of 2 mm to the throat plate.
The distance between the foot fastening block (1) and the bearing block

(3) of the rocker lever (4) is 71.5 mm.

Faults due to incorrect setting

• Poor feed behavior

Cover

• Remove the arm cover ( Section 3.5.3, pg. 12)

• Remove the head cover ( Section 3.5.2, pg. 12)

Fig. 57: Stroke of the top feed

Service Instructions 610/630 - 00.0 - 10/2014 63

Fig. 58: Stroke height of the top feed

(1) - Screw
(3) - Bearing block
(5) - Clamping hub

(6) - Screw
(7) - Lifting shaft

①

③

⑥

⑤

⑦

(8) - Throat plate (9) - Top feed foot

⑨

2mm

⑧

Foot top feed

Setting steps

1. Loosen the screw (1).

2. Move the bearing block (3) and set the dimension to 71.5 mm.

3. Tighten the screw (1).

4. Release the rocker lever (4) (swivel to the left).

5. Loosen the screw (6) of the clamping hub (5).

6. Turn the lifting shaft (7).
The top feed foot (9) should have a maximum stroke of 2 mm to the
throat plate (8).
Turn the lifting shaft until the top feed has achieved the required stroke.

Fig. 59: Top feed foot and throat plate

Important:
Set only as much lift as is required. The higher the stroke, the shorter the

64 Service Instructions 610/630 - 00.0 - 10/2014

movement of the top feed on the feed.

7. Tighten the screw (6).

Foot top feed

Risk of injury
Risk of crushing from moving parts

Switch off the sewing machine before setting the stroke
cam.

WARNING

②

③

(1) - Stroke cam
(2) - Screw

(3) - Groove

①

12.2 Setting the time of the stroke motion

Fig. 60: Setting the stroke cam

Check correct setting

In handwheel position F the first screw (2) in the direction of rotation of the
stroke cam (1) is aligned with the groove (3) of the push rod.

Faults due to incorrect setting

• Increased wear of mechanical parts

• Feed behavior not optimal, poss. loud machine noises

Cover

Remove the arm cover ( Section 3.5.3, pg. 12)

Service Instructions 610/630 - 00.0 - 10/2014 65

Setting steps

1. Lock sewing machine in position F.

2. Loosen both screws of the stroke cam (1).

3. Turn stroke cam (1) until the first screw in the direction of rotation is

4. Tighten both screws of the stroke cam (1).

aligned with the groove (3) of the push rod.

12.3 Setting the time of the feed motion

Risk of injury
Risk of crushing from moving parts

Switch off the sewing machine before adjusting the feed
motion.

Warning

(1) - Advance lever
(2) - Top feed foot

①

②

(3) - Thrust cam (4) - Groove

③

④

Fig. 61: Feed motion of the top feed foot

Foot top feed

Check correct setting

If the sewing machine is in position D, the advance lever (1) should be vertical.
If the sewing machine is in position D and a stitch length of 4 mm is set,

the top feed foot (2) should not move when the top feed guide is swung
out.

Faults due to incorrect setting

• Poor synchronization of the top feed to the bottom feed

• Ruffing behavior is poor

Cover

• Remove the head cover ( Section 3.5.2, pg. 12)

• Remove the arm cover ( Section 3.5.3, pg. 12)

Fig. 62: Feed motion of the top feed foot

66 Service Instructions 610/630 - 00.0 - 10/2014

Foot top feed

Risk of injury
Risk of crushing from moving parts

Switch off the sewing machine before setting the position
of the top feed foot.

WARNING

(1) - Feed shaft
(2) - Threaded pins

(3) - Pin

①

③

②

Setting steps

1. Loosen both screws of the thrust cam (3).

2. Turn the thrust cam (3) such that the center of the groove (4) is in pinning
position B vertically upwards (12 o'clock).

3. Tighten both screws of the thrust cam (3).

12.4 Setting the position of the top feed foot

Check correct setting

The top feed foot is set in the factory such that parallel support on the feed
is guaranteed for light to medium-weight sewing material.

The support surface (inclination) can be adjusted to suit the sewing mate­rial.

Faults due to incorrect setting

• Material damage

Fig. 63: Position of the top feed foot

Setting steps

1. Loosen threaded pins (2).

2. Push the pin (3) into or out of the feed shaft (1) as required. This adjusts
the angle of incline of the top feed foot.

3. Tighten the threaded pins (2).

Sequence

After adjusting the angle of incline of the top feed, the lift height must be
checked and corrected if necessary.

Service Instructions 610/630 - 00.0 - 10/2014 67

12.5 Basic setting of top feed guides

Risk of injury
Risk of crushing from moving parts

Switch off the sewing machine before setting the guide.

WARNING

(1) - Clamping screw
(2) - 5-pin

(3) - Edge

②

①

③

Cover

• Remove the arm cover ( Section 3.5.3, pg. 12)

• Tilt the machine ( Section 3.5.1, pg. 11)

Fig. 64: Aligning the guide

Foot top feed

Setting steps

1. Turn the switching flag of the center stepper motor such that the sensing
roller is at the smallest diameter of the switching flag.

 The edge of the switching flag lies on the roller.

Fig. 65: Setting of top feed guide

2. Loosen the clamping screws (1).

3. Align the guide with a 5-pin (1) to the edge.

4. Secure the clamping screws (3) for both guides.

68 Service Instructions 610/630 - 00.0 - 10/2014

Setting the thread take-up disk

Risk of injury
Risk of crushing from moving parts

Switch off the sewing machine before setting the thread
take-up disk.

WARNING

(1) - Thread take-up disk (2) - Carrier plate

(3) - Gauge

①

②

③

13 Setting the thread take-up disk

Check correct setting

The thread take-up disk (1) should be 5 mm above the carrier plate (2) for
a machine locked in slot E (top dead center of needle bar).

Faults due to incorrect setting

• Missed stitches

• Thread breakage

Cover

Remove the covers on the base plate ( Section 3.5.4, pg. 13)

Fig. 66: Setting the thread take-up disk

Setting steps

1. Loosen the screws of the thread take-up disk (1).

2. Insert the locking pin in slot E.

3. Turn the thread take-up disk (1) accordingly.
The measurement can be performed using gauge 3.

4. Set the disk tightly and tighten the screws.

Service Instructions 610/630 - 00.0 - 10/2014 69

Setting the thread take-up disk

Risk of injury
Risk of crushing from moving parts

Switch off the sewing machine before adjusting the thread
cutting device.

WARNING

(1) - Point of the movable blade
(2) - Looper
(3) - Screw

(4) - Movable blade
(5) - Screw

①

②

③

④

⑤

14 Setting the thread cutting device

14.1 Setting the thread cutting device

Check correct setting

The looper thread that is behind the looper and the rear thread of the nee­dle thread loop must be grasped by the point of the movable blade during
the cutting process.

Faults due to incorrect setting

• Thread that is not cut or not cut cleanly

Fig. 67: Removing the blade

Setting steps

1) Remove the blade

1. Loosen screw (3) and remove the movable blade (4).

2. Loosen screws (5).

3. Remove the entire thread cutter.

70 Service Instructions 610/630 - 00.0 - 10/2014

Setting the thread take-up disk

(1) - Blade
(2) - Movable blade
(3) - Pressure screw
(4) - Pressure screw

(5) - Screw
(6) - Point of the movable blade
(7) - Notch

①

③

④

②

⑤

⑥

⑦

①

Fig. 68: Manual cutting test

2) Manual cutting test

1. First loosely secure the movable blade (2) with the screw (5).

2. Align the point (6) of the movable blade with the notch (7) of the stationary
blade (1).
The point should be approx. 0.5 - 1.0 mm away from the notch.

3. Tighten the screw (5).

4. Perform cutting test with thread.

Important

If the cut is not clean, check the blade for sharpness or replace with a new
sharp blade.

5. Set the movable blade (2) in cutting position by gently turning in the
pressure screw (3).

Important

A smooth blade movement must be guaranteed.

6. If required, align the stationary blade (1) to the movable blade (2) using
the pressure screw (4).

Service Instructions 610/630 - 00.0 - 10/2014 71

Setting the thread take-up disk

(1) - Thread clamping plate

①

(1) - Blade mounting
(2) - Ball lever
(3) - Screw

(4) - Blade
(5) - Screw

①

②

④

③

⑤

3) Thread clamping plate

Fig. 69: Thread clamping plate

The thread clamping plate (1) should hold the cut thread ends gently to en­sure a smooth start to sewing.

Important

If the clamping plate is too tight this can case ruffing at the start of sewing.

4) Install the thread cutter

Fig. 70: Installing the thread cutter

1. Loosen screw (3) and remove the movable blade (4).

2. Position the thread cutter such that the blade holder (1) fits over the ball
lever (2).

3. Tighten the screws (5).

4. Insert blade (4) and secure with screw (3).

72 Service Instructions 610/630 - 00.0 - 10/2014

Setting the thread take-up disk

(1) - Counternut
(2) - Piston rod
(3) - End stop
(4) - Nut

(5) - Point of the movable blade
(6) - Stationary blade
(7) - Notch

①

②

⑤

⑦

⑥

③

④

(8) - Edge of the blade mounting (9) - Edge of the table plate

⑧

⑨

5) End positions of the thread cutter

Fig. 71: End position of the thread cutter

1. Disconnect the machine from the compressed air supply.

2. Slide the piston rod (2) into the left end position.

3. Loosen the counternut (1) and turn the piston rod (2) as far as required
until the position depicted in the sketch on the right is achieved.

Important

The point (5) of the movable blade (6) should be approx. 0.5 - 1 mm below
the notch (7) of the stationary blade (6).

Important

The point (5) of the movable blade (6) should be approx. 0.5 - 1 mm behind
the edge of the stationary blade.

Fig. 72: End position of the thread cutter

4. If one moves the piston rod (2) into its right end position, the edge (8)
of the blade mounting and edge (9) of the table plate should be flush
with one another.

5. Loosen the nut (4) and set the end position of the cylinder accordingly
using the end stop (3).

Sequence

Perform cutting test while sewing for both the smallest and largest stitch
length.

Service Instructions 610/630 - 00.0 - 10/2014 73

Setting the thread take-up disk

(1) - Thread puller for the looper thread
(2) - End stop

(3) - Thread puller for the needle thread

②

①

③

6) Thread puller for looper and needle thread

Fig. 73: Thread puller for looper and needle thread

Important:
While cutting the thread, the thread tensioners are opened and the thread

puller (1) for the looper thread and the thread puller for the needle thread
(3) are activated.

The pulled, tension-free thread serves to ensure proper stitch formation
the next time sewing commences.

No more thread than is required should be pulled as this determines the
length of the thread end remaining at the start of the seam.

The thread puller (1) is stepped. By adjusting the end stop (2) more or less
thread can be pulled.

74 Service Instructions 610/630 - 00.0 - 10/2014

Thread guide on the machine arm

(1) - Thread lever
(2) - Thread guide

(3) - Screw

①

②

③

15 Thread guide on the machine arm

Check correct setting

If the looper is in the left end position (thread lever in the top dead center),
the thread forms a horizontal line between the thread guide (2) and the
thread lever (1).

Fig. 74: Thread guide on the machine arm

Setting steps

1. Loosen the screw (3).

2. Setting the thread guide (2).

3. Tighten the screw (3).

Service Instructions 610/630 - 00.0 - 10/2014 75

16 Setting the tape feed (610)

(1) - Tape clamp
(2) - Tape guide

(3) - Tulle foot

①

②

③

Fig. 75: Setting the tape feed

Setting the tape feed (610)

Check correct setting

The air flows and speed of the tape guide are coordinated with one anoth­er:

• The speed of the feed movement is not too fast.

• The air flow of the tape guide (2) transports the tape faster than the

tape clamp (1) supplies the tape.

• The reverse movement of the tape clamp (1) is not too fast. The tape

does not hang between the tape clamp and the tape guide.

• The air flow is not too strong such that the tape flaps before entry

into the tulle foot (3) and possibly passes it by.

The tape is fed into the tulle foot (3) at the center, both when viewed from
the front and from the side.

76 Service Instructions 610/630 - 00.0 - 10/2014

Setting the tape feed (610)

(1) - Air throttle, reverse movement
(2) - Air throttle, tulle foot

(3) - Air throttle, feed movement
(4) - Air throttle, tape clamp

②

③

④

①

(1) - Screws (2) - Screws

②

①

Basic setting of the throttles

Fig. 76: Setting the throttles

• Tulle foot: 4 revolutions opened

• Tape clamp: 3 revolutions opened

• Reverse movement: 1.5 revolutions opened

• Feed movement: 1.5 revolutions opened

Information

• The edge on the base plate above the tape guide may not generate a

braking effect.

Setting the feed into the tulle foot

Fig. 77: Setting the feed into the tulle foot

1. Loosen the screws (1).

2. Move the tape guide to the side.

3. Tighten the screws (1).

Service Instructions 610/630 - 00.0 - 10/2014 77

4. Loosen the screws (2).

5. Move the tape feed upwards.

6. Tighten the screws (2).

Setting the tape feed (610)

78 Service Instructions 610/630 - 00.0 - 10/2014

Software settings

17 Software settings

17.1 Basic settings for new programs

Parameter Meaning

Stitch length Stitch length in mm: 1-4

Thread Tension at Needle Needle thread tension in percent: 1-99

Thread Tension at Hook Looper thread tension in percent: 1-99

Fullness Top/Bottom Fullness setting of top feed/bottom feed:

• 1: Top feed

• 2: Bottom feed

• 3: Top feed and bottom feed

Fullness Fullness factor: 1-16

Additional Fullness Correction of the differential bottom feed to the differential

top feed for fullness

Stitch Condensing at Start Stitch condensing at the start of the seam:

•0: off

•1: on

Seam Gender Symbolic seam representation for work step

• 0: Free sewing

• 1: Sleeve crown

• 2: Front armhole

• 3: Rear armhole

Grading Factor Grading factor in percent, growth from variable to variable

Teach Side (R/L) Specimen part, right/left side

17.2 Basic settings, machine

Stitch Condensing at Start - Stitch condensing at start of seam

Parameter Meaning

Number Stitch Condensing Stitch number of stitch condensing: 1-50 stitches

Stich Condensing Factor Stitch length of condensing in relation to the set stitch

length

Speed Speed during stitch condensing: 50 - 200 rpm

Stitch Condensing at End - Stitch condensing at the end of the seam

Parameter Meaning

Number Stitch Condensing Stitch number of stitch condensing: 1-50 stitches

Stich Condensing Factor Stitch length of condensing in relation to the set stitch

Speed Speed during stitch condensing: 50 - 200 rpm

Service Instructions 610/630 - 00.0 - 10/2014

length

79

Software settings

Thread Trim - Thread cutter

Parameter Meaning

Speed Speed when cutting thread (class 650): 50 - 200 rpm

Thread Tension Needle Needle thread tension when the thread is cut in percent:

1-50

Thread Tension Hook Looper thread tension when the thread is cut in percent:

0-5

Turn Backward after
Trimming

Turn backward after cutting thread (class 650):

•0: off

•1: on

Speed

Parameter Meaning

Maximum Speed Max. permissible speed: 100 - 4000 rpm

Positioning Speed Speed when positioning: 10 - 70 rpm

Softstart Speed Speed on soft start: 10 - 1000 rpm

Number Stitches Softstart Number of softstart stitches: 1-10

Stop Positions

Parameter Meaning

Stop Position after Sewing Stop position after sewing (needle up)

Stop Position Needle Up not used

Stop Position Needle Down Needle down, basic position of the arm shaft: 120 - 204°

80

Foot - Sewing foot

Parameter Meaning

Foot Lift between Seam Lifting foot in the seam

•0: off

•1: on

Foot Lift at Seam End Lifting foot at the seam end

•0: off

•1: on

Duration Thread Tension after Seam End - Duration for needle
thread tension closed at the seam end

Setting range in seconds: 1 - 7

Service Instructions 610/630 - 00.0 - 10/2014

Software settings

Other devices

Parameter Meaning

Tape Feeder Exists Tape feed device

• 0: not present

• 1: present

Tape Length Cutter to
Needle

Tape length after cutting: 0 - 100 mm

17.3 Language selection

Parameter Meaning

German Menu language, German

English Menu language, English

Chinese Menu language, Chinese

17.4 User settings

Parameter Meaning

Signal Sound at Segment
End

Side Switch at Seam End Automatic side change after the end of the seam:

Acoustic signal at the end of the segment:

•0: off

•1: on

•0: off

•1: on

Abort Program at Pedal -2 Program is aborted at pedal position -2:

•0: off

•1: on

Mode Second Pedal Function assignment of the 2nd pedal:

• 1: Fullness correction

• 2: Curve support

• 6: Manual operation, fullness 1-7

• 7: Manual operation, fullness 0-16

Service Instructions 610/630 - 00.0 - 10/2014

81

17.5 USB settings

Parameter Meaning

Software settings

Write Active Sewing
Program to USB

Read Sewing Program to
USB

Write Global Data of Control
Unit to USB

Overwrite Global Data of
Control Unit with USB Data

Copy, save the active program to the USB stick

Load program from USB stick

Save control data on the USB stick

Load control data from USB stick

17.6 Machine calibration

Parameter Meaning

Adjust Flat Sewing Top Correction/fine adjustment of differential top feed

in percent: -50 - +50

Adjust Flat Sewing Bottom Correction/fine adjustment of differential bottom feed

in percent: -50 - +50

Motor Calibrations

Thread Tension Calibrations

Synchronizing the feeds, see

Calibrating electrical thread tension, see

 pg. 85

 pg. 83

17.7 Reset settings

Parameter Meaning

Reset All Reset all factory settings

Reset Sewing Programs Resetting sewing programs

Control Unit Update Updating the control program

17.8 Test input/output

Test of input and output elements

82

Service Instructions 610/630 - 00.0 - 10/2014

Software settings

(1) - Tensioning disks
(2) - Adjusting nut

(3) - Threaded pin

②

③

①

17.9 Calibrating electrical thread tension

Sequence

Prerequisite: A thread scale is present and the calibration takes place with
a thread with yarn strength 120.

Calibration points

The following three calibration points must be set for the needle and looper
threads:

• Point 3 - Maximum tension (300 g)

• Point 2 - Medium tension (150 g)

• Point 1 - Minimum tension (5 g)

Calibration steps, needle thread

1. Set calibration point 3

1. Thread the thread up to the thread lever ( Operating Instructions,
Thread needle thread)

2. Thread the thread after the thread lever into the thread scale.

3. Switch on the machine.

4. Select the menu Service > Service Calibrations > Thread

Tension Calibration > Tension Top 300g.
Result: The left tension element is closed.

5. Measure the tension value. It must be 300 g.

Fig. 78: Calibrate the thread tension

Service Instructions 610/630 - 00.0 - 10/2014

If 300 g is not present, this must be corrected as follows:

6. Loosen threaded pin (3).

7. Open tensioner element. To this end, select any value for Tension Bot-

tom in the opened Calibration menu.

8. Turn the adjusting nut (2) very slightly. Turning clockwise reduces the

value, turning counterclockwise increases the tension value.

83

Software settings

9. Select the menu point Tension Top 300g again and measure the

tension value.

10. When the thread scale shows the value 300 g:

Tighten the thread pin (3), without changing the position of the adjusting
nut (2).

2. Set calibration point 2

1. Select Tension Top 150g.

2. Change the thread tension with +/-1 or +/-10, until the thread scale

reads 150 g.

3. Exit menu point.

3. Set calibration point 3

1. Select Tension Top 5g.

2. Change the thread tension with +/-1 or +/-10, until the thread scale

reads 5 g.

3. Exit menu point.

Calibration steps, looper thread

1. Repeat procedure for the looper thread tension for the calibration steps
3-1 using the service menus Tension Bottom 300g, 150g and 5g.

84

Service Instructions 610/630 - 00.0 - 10/2014

Software settings

17.10 Synchronizing the feeds

17.10.1 Calibrate the main feed

1. Ensure that the mechanical basic setting is performed completely.

2. Set the sewing foot pressure to the base value (26/47 mm)

Fig. 79: Setting the sewing foot pressure

3. Disassemble the top transport foot and the center foot.

4. Assemble the calibrating foot (0178 800024).

5. Lower the differential feed, lower.

6. Set the adjusting needle (0558 006060) such that it creates a stitch on

a cardboard strip.

7. Switch on the machine.

8. Select the menu Service > Service Calibrations > Motor Cal-

ibration > Motor Main 2mm.

9. Lift the sewing feet and insert the strip of cardboard.

10. Press the pedal forwards.



11 stitches are sewn. The distance between the first and the last stitch
should be precisely 20 mm.

11. If required, change the distance with +/-1 or +/-10. If the distance is to

be reduced, a smaller minus figure must be entered. If the distance is
to be increased, a higher minus figure must be entered.

12. Repeat the sewing, until the distance is precisely 20 mm.

13. Repeat steps 8 to 11 for the setting Motor Main 3mm (30 mm) and

Motor Main 4mm (40 mm).

Service Instructions 610/630 - 00.0 - 10/2014

85

Software settings

17.10.2 Calibrate differential bottom feed

1. Lower the main feed such that it remains precisely under the throat plate.

Check manually, that no parts can collide during the movement.

2. Set the differential bottom feed to height 1.5 mm.

3. Select the menu Service > Service Calibrations > Motor Cal-

ibration > Motor Bottom Diff 2mm.

4. Lift the sewing feet and insert the strip of cardboard.

5. Press the pedal forwards.

 11 stitches are sewn. The

distance between the first and the last stitch
should be precisely 20 mm. If required, change the distance with +/-1
or +/-10.
If the distance is to be reduced, enter a smaller minus figure. If the dis­tance is to be increased, enter a higher minus figure.

6. Repeat the sewing, until the distance is precisely 20 mm.

7. Repeat steps 3 to 6 for:

• Motor Bottom Diff 3mm (30 mm)

• Motor Bottom Diff 4mm (40 mm)

• Motor Bottom Diff 6mm (60 mm)

17.10.3 Calibrate differential top feed foot

1. Disassemble the calibrating foot.

2. Disassemble the adjusting needle.

3. Assemble the top feed foot and the center foot. The main feed remains
lowered. The differential bottom feed and differential top feed are in
mesh.

4. Change to manual mode MAN.

5. Set the fullness to 0 and the stitch length to 2 mm.

6. Run through 2 PTFE strips (0178 800033) with the material side facing
outward. The strips should be fed through perfectly aligned.

86

7. Select the menu Service > Service Calibrations > Motor Cal-
ibration > Motor Top Diff 2mm and change the value, if required,
using +/- or +/-10.

8. Repeat the sewing process in manual mode, until both PTFE strips are
fed through perfectly aligned.

9. Repeat steps 4 to 8 for:

• Motor Main 3mm (30 mm)

• Motor Main 4mm (40 mm)

10. Change to manual mode MAN.

11. Set fullness to 16.

12. Repeat steps 6 to 8 for:

• Motor Main 6mm (60 mm)

13. Set the main feed to height 1.1 mm.

Service Instructions 610/630 - 00.0 - 10/2014

Maintenance

Risk of injury!
Skin rashes from lubricant

Oil can cause a rash if it comes into contact with the skin.
Avoid any prolonged skin contact with the oil.
Wash the affected area thoroughly after contact.

WARNING

Risk of environmental damage from grease!

Lubricant is a pollutant and must not enter the sewage system
or the soil.
Collect waste lubricant carefully and dispose of it and greasy
machine parts in accordance with the applicable statutory reg­ulations.

Please observe all safety and environmental protection in­structions issued by the lubricant manufacturer.

ATTENTION

(1) - Oil reservoir

①

18 Maintenance

18.1 Lubrication

Fig. 80: Oil reservoir

Lubrication of the upper part of the machine

• The upper part of the machine is equipped with a central oil wick lubri-

cation. All bearing points are supplied from the oil reservoir (1).

• The oil level must never drop below the "MIN" mark.

• Top up through the holes in the sight glass until the oil level reaches

the "MAX" mark.

Service Instructions 610/630 - 00.0 - 10/2014 87

Maintenance

Possible damage to the paintwork from solvent-based cleaners.

Solvent-based cleaners damage the paintwork of the machine.
Use only solvent-free substances for cleaning the machine.

NOTE

Use only DA-10 lubricant or an equivalent oil conforming to the following
specifications to lubricate the sewing machine:

• Viscosity at 40° C: 10 mm²/s

• Flash point: 150° C

DA-10 can be obtained from DÜRKOPP ADLER AG sales offices under
the following part numbers:

250 ml container: 9047 000011
1 liter container: 9047 000012
2 liter container: 9047 000013
5 liter container: 9047 000014

18.2 Cleaning

Sewing dust and thread remains must be removed every 8 operating
hours using a compressed-air pistol or a brush.

Areas that need to be cleaned particularly thoroughly:

• Looper

• Throat plate

• Motor fan sieve

These cleaning operations are described in the operating instructions
( Operating Instructions, Maintenance).

88 Service Instructions 610/630 - 00.0 - 10/2014

DÜRKOPP ADLER AG
Potsdamer Str. 190
33719 Bielefeld
Germany
Phone: [phone]
E-mail: [e-mail]
www.duerkopp-adler.com

Subject to design changes - Printed in Germany - © Dürkopp Adler AG - Service Instructions - 0791 610640 EN - 00.0 - 10/2014