Dürkopp Adler 967 Service Instructions Manual
967
Service Instructions
All rights reserved.
Property of Dürkopp Adler AG and protected by copyright. All forms of reproduction, even as
extracts, are prohibited unless prior written permission has been given by Dürkopp Adler AG.
Copyright © Dürkopp Adler AG - 2014
Table of contents
1 About these service instructions..............................................3
1.1 Scope of these service instructions..............................................3
1.2 Representation conventions – symbols and characters...............3
1.3 Other documents..........................................................................4
1.4 Liability..........................................................................................4
2 Safety........................................................................................... 5
2.1 Basic safety instructions...............................................................5
2.2 Signal words and symbols used in warnings................................6
3 Working basis............................................................................. 9
3.1 Sequence of the settings..............................................................9
3.2 Cable routing ................................................................................9
3.3 Removing the covers..................................................................10
3.3.1 Access to the machine bottom section.......................................10
3.3.2 Removing and fitting the arm cover............................................11
3.3.3 Removing and fitting the head cover..........................................12
3.3.4 Removing and fitting the cover plate ..........................................12
3.3.5 Removing and installing the handwheel and drive belt cover.....13
3.3.6 Removing and installing the thread tension plate.......................13
3.3.7 Removing and installing the hook compartment cover...............14
3.3.8 Removing and installing the throat plate.....................................15
3.3.9 Removing and installing the feed dog.........................................16
3.4 Flats on shafts ............................................................................17
3.5 Axial play for shafts running in plain bearings ............................18
3.6 Locking the sewing machine in place.........................................19
3.7 Putting the handwheel into position............................................20
4 Positioning the arm shaft.........................................................21
5 Setting the handwheel scale....................................................23
6 Setting the drive........................................................................25
6.1 Setting the drive ratio..................................................................25
6.1.1 Removing the drive belt..............................................................25
6.1.2 Adjusting the drive pulley............................................................26
6.1.3 Adjusting the belt tension............................................................27
6.2 Adjusting the positioning of the machine....................................28
6.2.1 Determining the drive ratio in the control program......................28
6.2.2 Adjusting the reference position of the handwheel.....................29
7 Setting the stitch length adjusting wheels.............................31
7.1 Setting the upper stitch length adjusting wheel ..........................31
7.2 Setting the lower stitch length adjusting wheel...........................33
7.3 Setting the stitch length limit.......................................................35
7.4 Setting the eccentric for the forward and backward stitches ......37
8 Setting the feed dog................................................................. 39
8.1 Setting the feed dog position......................................................39
8.1.1 Moving the feed dog...................................................................40
8.1.2 Moving the feed dog carrier........................................................40
8.2 Adjusting the feed dog movement..............................................42
8.2.1 Adjusting the forwards movement ..............................................42
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Table of contents
8.2.2 Setting the feed dog height at top dead center...........................43
8.2.3 Adjusting the stroke movement ..................................................44
9 Aligning the needle bar linkage...............................................47
9.1 Moving the needle bar linkage laterally ......................................47
9.2 Aligning the needle bar linkage in the sewing direction..............49
10 Position of the hook and needle .............................................51
10.1 Tensioning the hook drive belt....................................................51
10.2 Adjusting the dead point of the reciprocating movement of the drive
52
10.3 Setting the loop stroke position...................................................53
10.4 Setting the hook clearance.........................................................54
10.5 Adjusting the loop former............................................................55
10.6 Setting the needle bar height......................................................56
11 Adjusting the sewing foot feed ...............................................59
11.1 Adjusting the zero stroke of the feet, tension force of the torsion
spring 59
11.2 Adjusting the drive dog for the presser foot bar..........................61
11.3 Aligning the feed stroke of the feet.............................................62
11.4 Setting the stroke movement for the feeding foot.......................63
12 Adjusting the foot stroke......................................................... 65
12.1 Adjusting the foot stroke generated by the hand lever ...............65
12.2 Adjusting the foot stroke generated by the pneumatic cylinder..66
13 Adjusting the thread system ...................................................67
13.1 Setting the thread tensioning spring...........................................67
13.2 Setting the winder.......................................................................68
13.3 Adjusting the hook-thread guide.................................................72
14 Adjusting the thread cut-off.....................................................75
14.1 Adjusting the thread cut-off point................................................75
14.2 Basic setting of the thread cutter................................................76
14.3 Adjust the position of the movable knife.....................................78
14.4 Adjusting the lateral position of the movable knife......................79
14.5 Adjusting the cutting pressure of the knife..................................80
14.6 Adjusting the hook thread clamp ................................................81
15 Soft start.................................................................................... 83
16 Maintenance.............................................................................. 85
16.1 Cleaning the filter element..........................................................85
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Service instructions 967 - 00.0 - 12/2014
About these service instructions
1 About these service instructions
This manual for sewing machine 967 was compiled with the utmost care.
It contains information and notes to enable the machine to give many
years of reliable service.
1.1 Scope of these service instructions
These instructions describe the setting and maintenance work on the 967
sewing machine. It applies to all sub-classes.
The intended use and set-up is described in the Operating instructions.
1.2 Representation conventions – symbols and characters
Various information in this manual is represented or highlighted by the following characters in order to facilitate easy and quick understanding:
Correct setting
Indicates proper setting.
Malfunctions
Specifies the faults that can occur due to an incorrect setting.
Steps to be performed when operating the machine (sewing and setting up)
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 step
1.
2. Second step
2.
The sequence of the steps must always be followed.
...
•
Lists are identified by bullet points.
Result of performing an operation
Change to the machine or in the display.
Important
Special attention must be paid to this point when performing a step.
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About these service instructions
Information
Additional information, e.g. on alternative operating facilities.
Sequence
Specifies the work to be performed before or after a setting.
References
Reference to another section in the manual.
Safety Important warnings for the machine operator are specially designated.
Since safety is of particular importance, hazard symbols, levels of danger
and their signal words are described separately in 2 Safety.
Orientation If the figure is unclear, indications of right or left are always from the oper-
ator's point of view.
1.3 Other documents
This equipment includes components from other manufacturers. Each
manufacturer has performed a hazard assessment for these purchased
parts and confirmed their design compliance with applicable European
and national regulations. The proper use of these components is
described in each manufacturer's manual.
1.4 Liability
All information in this service instructions was compiled with consideration
to the state of the art, and applicable standards and regulations.
The manufacturer cannot be held liable for damages resulting from:
• Breakage and transport damages
• Failure to observe operating manual
• Improper use
• Unauthorized modifications to the machine
• Use of untrained personnel
• Use of unapproved replacement parts
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Service instructions 967 - 00.0 - 12/2014
Safety
2 Safety
This section contains basic information for your safety.
Read the information carefully before setting up, programming, maintaining, or operating the machine.
Make sure to follow the information included in this section. Failure to do
so can result in serious injury and damage to the machine.
2.1 Basic safety instructions
Only authorized personnel should use the machine. Anyone working on
the machine should read the operating manual first.
The machine should only be set up in accordance with the manual.
The operating manual should be available at the machine's location at all
times.
Observe the generally applicable safety and accident prevention regula-
tions and the legal regulations concerning industrial safety and environmental protection.
If you use parts from suppliers, observe the safety information and operating manual provided by the manufacturer.
All warnings on the machine must always be in legible condition and may
not be removed. Missing or damaged labels should be replaced immediately.
In the following situations, the machine must be disconnected from the
power supply using the main switch or by disconnecting the power plug:
• Threading
• Replacing the needle or other sewing tools
• Leaving the workplace
• Performing service, maintenance work and repairs
Inspect the machine while in use for any externally visible damage. Stop
working as soon as you notice any changes to the machine. Report any
changes to your supervisor. A damaged machine may no longer be used.
Machines or machine parts that have reached the end of their service life
must not continue to be used. They have to be disposed of correctly and
in accordance with the applicable statutory provisions.
Only qualified specialists may set up the machine. Anyone setting up the
machine should read the operating manual first.
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Safety
Only qualified specialists may perform maintenance work and repairs.
Anyone maintaining or setting up the machine must read the service instructions first.
Safety equipment should not be removed or deactivated. If this cannot be
avoided for a repair operation or service setting, the safety equipment
must be refitted and put back into service immediately afterwards.
Only qualified electrical specialists may perform work on electrical equipment.
The power cable must have a plug authorized for the country in which the
machine is being used. The power plug may only be connected to the
power cable by a qualified specialist.
Work on live components and equipment is prohibited. Exceptions are defined in the specifications in DIN VDE 0105.
Only use original spare parts from the manufacturer. Missing or faulty
spare parts could impair safety and damage the machine.
2.2 Signal words and symbols 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 indicate the degree of risk:
Signal words Signal words and the hazard that they describe:
Signal word Hazard
DANGER Will result in serious injury or death.
WARNING Can result in serious injury or death.
CAUTION Can result in minor or moderate injury.
ATTENTION Can result in damage to property.
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Safety
Symbols The following symbols indicate the type of risk to personnel:
Symbol Type of danger
General risk
Risk of electric shock
Risk of puncturing
Risk of crushing
Examples Examples of the layout of the warnings in the text:
DANGER
Type and source of risk
Consequences of non-observance
Measures for avoiding the risk
This is what a warning looks like for a hazard that
will result in serious injury or even death if ignored.
WARNING
Type and source of risk
Consequences of non-observance
Measures for avoiding the risk
This is what a warning looks like for a hazard that
could result in serious injury or even death if
ignored.
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Safety
CAUTION
Type and source of risk
Consequences of non-observance
Measures for avoiding the risk
This is what a warning looks like for a hazard that
could result in moderate or minor injury if the warning is ignored.
CAUTION
Type and source of risk
Measures for avoiding the risk
This is a warning note for a hazard that could result
in environmental damage if ignored.
ATTENTION
Type and source of risk
Consequences of non-observance
Measures for avoiding the risk
This is what a hazard note looks like for a hazard that can result in property damage if the note is not observed.
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Working basis
3 Working basis
3.1 Sequence of the settings
The setting positions for the sewing machine are interdependent.
Always adhere to the specified sequence for the individual setting steps.
Always observe all information on requirements and following settings
marked at the side with .
ATTENTION
Machine damage possible due to incorrect sequence.
Always adhere to the working sequence specified in this manual.
3.2 Cable routing
Ensure that all cables in the machine are laid such that moving parts are
not impaired in their ability to function correctly.
1. Lay any excess cabling neatly in proper cable loops.
2. Tie the loops together using a cable tie.
If possible, bind the loops to fixed parts.
The cables must be fixed firmly in place.
3. Cut off any protruding part of the cable tie.
ATTENTION
Machine damage and malfunctions can be caused by laying the
cables incorrectly.
Excess cabling may obstruct moving machine parts in their ability to
function correctly. This will affect the sewing function and may cause
damage.
Lay excess cabling as described above.
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Working basis
3.3 Removing the covers
WARNING
Risk of injury
Crushing by moving parts
Switch the sewing machine off before you remove the covers
or refit them.
In many types of setting work, you will have to remove the machine covers
first in order to access the components.
Described here is how to remove the individual covers and how to refit
them. Just the cover that needs to be removed is then specified in the text
for that particular type of setting work.
3.3.1 Access to the machine bottom section
In order to access the components at the machine bottom section, you
must first tilt the machine upper section.
Figure 1: Tilting and erecting the machine upper section
10
Tilting the upper machine section
1. Tilt the machine upper section as far as it will go.
Erecting the machine upper section
1. Erecting the machine upper section
Service instructions 967 - 00.0 - 12/2014
Working basis
3.3.2 Removing and fitting the arm cover
Each of the two upper covers can be removed separately as required.
Figure 2: Removing and fitting the arm cover
ྲྀ
ཱ
ཱུ
ི
ུ
ཱི
(1) - Right hand adjusting wheel
(2) - Left hand adjusting wheel
(3) - Screws
(4) - Upper left cover
Removing the left arm cover
1. Turn the left hand adjusting wheel from position (2) to position (0).
2. Turn the right hand adjusting wheel from position (1) to position (8).
The covers can be removed only when the adjusting wheels are in the
correct position.
3. Loosen the screws (3).
(5) - Upper right cover
(6) - Screws
(7) - Lever
4. Raise the upper left cover (4) in the direction arrowed.
Removing the right arm cover
1. Turn the lever (7) clockwise as far as the stop.
2. Loosen the screws (6).
3. Lift up the cover and release the power supply plug that is attached to
the underside of the cover and which supplies the fan.
4. Raise the upper right cover (5) in the direction arrowed.
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3.3.3 Removing and fitting the head cover
Figure 3: Removing the head cover
(1) - Head cover (2) - Screws
Working basis
ཱ
Removing the head cover
1. Loosen the screws (2).
2. Remove the head cover (1).
3.3.4 Removing and fitting the cover plate
Figure 4: Removing the cover plate
ཱ
12
(1) - Cover plate (2) - Screws
Removing the cover plate
1. Loosen the screws (2).
2. Remove the cover plate (1).
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Working basis
3.3.5 Removing and installing the handwheel and drive belt cover
Figure 5: Removing the drive belt cover
ཱ
(1) - Handwheel securing screws
(2) - Handwheel
(3) - Drive belt cover
Removing the drive belt cover
1. Loosen the screws on the handwheel (1).
2. Remove the handwheel (2).
3. Loosen the screws on the drive belt cover (4).
(4) - Drive belt cover securing screws
ཱི
ི
4. Remove the drive belt cover (3).
3.3.6 Removing and installing the thread tension plate
Figure 6: Removing the thread tension plate
ཱ
ི
(1) -Upper right cover
(2) - Thread tension plate securing screws
(3) - Thread tension plate
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Working basis
Removing the thread tension plate
1. First remove the upper right cover (1).
The thread tension plate is connected to cables and hoses which are
attached under the upper right cover. This cover therefore must be
removed.
2. Loosen the screws (2).
3. Remove the thread tension plate (3).
3.3.7 Removing and installing the hook compartment cover
Figure 7: Removing the hook compartment cover
ཱ
ུ
ི
ཱི
(1) - Cover
(2) - Opening
(3) - Cover
Removing the hook compartment cover
1. Insert a finger into the opening (2).
2. Push the cover (1) up.
3. Applying moderate force, pull the cover (3) off upwards the
(the cover is secured with a permanent magnet).
4. Loosen the screws (4).
5. Remove the plate (5).
(4) - Screws
(5) - Plate
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Working basis
3.3.8 Removing and installing the throat plate
WARNING
Risk of injury
Risk of crushing injuries and stab wounds from moving and
sharp parts.
Switch the sewing machine off before you remove or install the
throat plate.
Figure 8: Removing and installing the throat plate
ཱ
(1) - Throat plate (2) - Screws
Removing the throat plate
1. Remove the hook compartment cover ( page 14).
2. Use the hand lever to raise the foot.
3. Loosen the screws (2).
4. Remove the throat plate (1).
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3.3.9 Removing and installing the feed dog
WARNING
Risk of injury
Risk of crushing injuries and stab wounds from moving and
sharp parts.
Switch the sewing machine off before you remove or refit the
feed dog.
Figure 9: Removing and installing the feed dog
Working basis
ི
ཱ
(1) - Feed dog carrier
(2) - Screws
Removing the feed dog
1. Remove the throat plate ( page 15).
2. Loosen the screws (2).
3. Take the feed dog (3) off the feed dog carrier (1).
Installing the feed dog
1. Place the feed dog (3) on the feed dog carrier (1) and lightly tighten the
screws (2).
2. Installing the throat plate ( page 15)
3. Install the feed dog (3) so that the clearance from the throat plate is the
same on both sides.
(3) - Feed dog
16
4. Tighten the screws (2).
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Working basis
3.4 Flats on shafts
Figure 10: Flats on shafts
ཱ
(1) - Shaft (2) - Surface
Some shafts have flat surfaces at those points where the components are
screwed on. This stabilizes the connection and makes adjustment easier.
Always ensure that the screw faces are completely flush with the surface.
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3.5 Axial play for shafts running in plain bearings
Figure 11: Axial play for shafts running in plain bearings
Working basis
(1) - Plain bearing shell
(2) - Shaft
(3) - Lever
(4) - Adjusting ring
ཱི
Shafts (2) running in plain bearing shells (1) are axially adjusted when the
lever (3) and the adjusting ring (4) touch the front face of the bearing shells
(1).
When adjusting components mounted on shafts running in plain bearings,
always ensure that the axial play of these shafts is as small as possible or
even 0.
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Working basis
3.6 Locking the sewing machine in place
For some settings, the machine has to be locked in place. To do this, the
locking peg from the accessory pack is inserted into a groove on the arm
shaft crank to block the arm shaft.
There are 2 securing positions:
• Position 1: Loop stroke position
• 5 mm end in the large groove
• Setting the loop stroke and needle bar height
• Position 2: Handwheel zero setting
• 3 mm end in the small groove
• Setting the handwheel position and checking the bottom dead
center for the needle bar
Figure 12: Locking the sewing machine in place
ཱ
ི
(1) - Groove
(2) - Locking peg
Locking the machine in place
1. Turn the handwheel until the appropriate groove (1) is in front of the
locking opening (3):
• Small groove at handwheel position 180°
• Large groove at handwheel position 200 - 205°
2. Insert the locking peg (2) with the appropriate end in the groove (1).
Removing the lock
(3) - Locking opening
1. Pull the locking peg (2) out of the groove (1).
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Working basis
3.7 Putting the handwheel into position
With some settings, the graduated scale on the handwheel must be put
into a certain position.
Figure 13: Putting the handwheel into position
ཱ
(1) - Graduated scale (2) - Marking
Setting steps
1. Turn the handwheel until the specified number on the graduated
scale (1) is next to the marking (2).
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Positioning the arm shaft
4 Positioning the arm shaft
Correct setting
The 3 setscrews (1) must be seated flush on the flat. The arm shaft crank
must be flush with the machine casting.
Cover
• Upper left cover, ( page 11).
Figure 14: Setting the arm shaft crank
WARNING
Risk of injury!
Crushing injuries from moving parts.
Switch the sewing machine off before you check and set the
position of the arm shaft crank.
(1) - Setscrews
Setting steps
1. Release all the setscrews (1) on the arm shaft crank.
2. Turn the arm shaft crank so that the setscrews (1) are seated flush on
the flat of the arm shaft.
3. Push the arm shaft to the right as far as it will go and flush with the
machine casting.
4. Tighten all the setscrews (1) on the arm shaft crank.
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Positioning the arm shaft
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Setting the handwheel scale
5 Setting the handwheel scale
Correct setting
Lock the machine in place at position 2 ( page 19).
The handwheel must be at position 180°.
Cover
• Removing and refitting the handwheel and drive belt cover
( page 13).
Figure 15: Setting the handwheel scale
WARNING
Risk of injury
Crushing injuries from moving parts.
Switch the sewing machine off before you check and set the
position of the handwheel on the arm shaft.
ི
ཱ
(1) - Screws
(2) - Handwheel
Setting steps
1. Removing the drive belt cover and handwheel ( page 13), removing
the ridged drive belt ( page 25).
2. Loosen the screws (1).
3. Fitting the drive belt cover and handwheel.
4. Lock the machine in place at position 2 ( page 19).
5. Set the handwheel (2) to 180° ( page 20).
6. Insert the hexagon wrench through the opening (3) into the set screw,
and tighten it.
7. Removing the drive belt cover and handwheel ( page 13).
(3) - Opening for the wrench
8. Tighten the screws (1).
9. Fit the ridged drive belt, drive belt cover and handwheel.
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Setting the handwheel scale
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Setting the drive
6 Setting the drive
6.1 Setting the drive ratio
WARNING
Risk of injury
Crushing injuries from moving parts.
Switch off the sewing machine before checking and setting the
drive ratio.
The machine is equipped with a 2-step pulley, by which the drive ratio between the drive motor and the machine can be changed, and the penetration force of the needle can be increased.
To change the ratio, the drive belt must be removed and the pulley
changed to the opposite position. The drive belt is then refitted and tensioned.
Cover
• Drive belt cover ( page 13).
6.1.1 Removing the drive belt
Figure 16: Removing the drive belt
(1) - Ridged drive belt
(2) - Tensioning roller
ཱ
ི
ཱི
(3) - Belt tensioner
(4) - Belt tensioner clamping screws
Setting steps
1. Undo the belt tensioner (3) clamping screws (4).
2. Rotate the tensioning roller (2) and belt tensioner (3).
3. Remove the ridged drive belt (1).
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