DURKOPP ADLER M-Type Premium Series Manuale operativo
M-Type PREMIUM
Additional Instructions
Adjusting the thread
tensioning plate
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including extracts, is prohibited without the prior written approval of Dürkopp Adler AG.
Copyright © Dürkopp Adler AG 2018
IMPORTANT
READ CAREFULLY BEFORE USE
KEEP FOR FUTURE REFERENCE
Table of Contents
Additional Instructions M-Type PREMIUM - 00.0 - 04/2018 1
1 General information ................................................................... 3
2 Adjusting the thread tensioning plate ...................................... 4
2.1 Setting the machine...................................................................... 4
2.2 Adjusting the tensioning plate....................................................... 5
2.2.1 Adjusting the tensioning plate using the Schmidt MST-2000 ....... 5
2.2.2 Adjusting the tensioning plate using a mechanical thread scale .....7
2.3 Checking the adjusted thread tension .......................................... 8
2.3.1 Checking the adjusted thread tension using
the Schmidt MST-2000................................................................. 8
2.3.2 Checking the adjusted thread tension using a mechanical
thread scale ................................................................................ 10
Table of Contents
2 Additional Instructions M-Type PREMIUM - 00.0 - 04/2018
General information
Additional Instructions M-Type PREMIUM - 00.0 - 04/2018 3
1 General information
These additional instructions describe how to set up the thread tensioning
plate for the following classes:
The setup process is described for 1-needle machines and must be com-
pleted in the same way for 2-needle machines.
Required tools/materials/software
The adjustment of the thread tensioning plate requires the use of the
following components:
• Thread: Serafil 30 black
• Thread scale (preferably, Schmidt MST-2000)
• Sealing wax
• Locking peg
• Flat-head screwdriver
• 10 mm wrench
• Metal plate (for Schmidt MST-2000)
• Screw clamp (for Schmidt MST-2000)
• Software version 4.27 or later
Information
To attain the most accurate measuring result, we recommend that you use
the Schmidt MST-2000 thread scale.
Class Subclass
667 • 667-180912
• 667-180932
669 • 669-180912
867 • 867-190922-M
• 867-190929-M
• 867-190942-M
• 867-190945-M
• 867-290942-M
• 867-290945-M
868 • 868-190922-M
• 868-290922-M
869 • 869-180922-M
• 869-280922-M
878 • 878-160722-M
• 878-260722-M
Adjusting the thread tensioning plate
4 Additional Instructions M-Type PREMIUM - 00.0 - 04/2018
2 Adjusting the thread tensioning plate
Preparing the adjustment using the Schmidt MST-2000
Use screw clamps to attach a plain sheet of metal (e.g. 6 mm aluminum)
to the tabletop on the left-hand side of the machine.
Set up the thread scale with its suction cup base on the metal plate in such
a way that the sewing thread - coming from the thread lever - lines up with
thread guides both horizontally and vertically.
Important
Use a Serafil 30 black thread to set the thread tensioning plate.
cw = turn clockwise
ccw = turn counterclockwise
2.1 Setting the machine
Fig. 1: Setting the machine
To set the machine:
1. Switch on the machine.
2. Call up the service routine Service > Settings > Thr.Tens.Top
(Service Instructions).
The software is used to define the necessary presettings on the
machine.
(1) - Lock screw
(2) - Thread tension spring
(3) - Stop screw
(4) - Lock screw
(5) - Stop screw
(6) - Pre-tensioner
③④ ⑤
⑥
①
②
Adjusting the thread tensioning plate
Additional Instructions M-Type PREMIUM - 00.0 - 04/2018 5
3. Set thread tension level 2 (50%).
4. Lock the machine in place at position 1 (handwheel position 0°).
5. Remove the thread tension spring from the operating range (cw).
6. Loosen lock screws (1) and (4).
7. Loosen stop screws (3) and (5) (ccw).
8. Set the pre-tensioner (6) to a tension force of 20 cN.
Pretensioning must not significantly impair the thread tension.
2.2 Adjusting the tensioning plate
2.2.1 Adjusting the tensioning plate using the Schmidt MST-2000
Fig. 2: Adjusting the tensioning plate (1)
To adjust the tensioning plate:
1. Insert the needle thread as shown above.
(1) - Lock screw
(2) - Stop screw (3) - Stop screw
(4) - Lock screw
①
②
③④
Adjusting the thread tensioning plate
6 Additional Instructions M-Type PREMIUM - 00.0 - 04/2018
Fig. 3: Adjusting the tensioning plate (2)
2. Feed the needle thread through the thread lever (9) and the thread
guides of the thread scale and clamp it at the winder (5).
3. Press POWER (8) to activate the thread scale.
4. Press Motor ON/OFF (6) to start the winder (5).
5. Screw in (cw) the stop screw (2) until the tension increases, peaks and
decreases again.
The tension value is indicated on the display (7).
6. When the tension drops while you are screwing in (cw) the stop
screw (2), set the tension to 450±10 cN (average value).
7. Secure the stop screw (2) using the lock screw (1).
Important
To prevent it from turning while it is being secured, use a 10 mm wrench
to hold the stop screw (2) in place.
8. Check the thread tension and readjust it if necessary.
9. Screw in (cw) the stop screw (3) until the tension increases, peaks and
decreases again.
The tension value is indicated on the display (7).
10. When the tension drops while you are screwing in (cw) the stop
screw (3), set the tension to 720±50 cN (average value).
11. Secure the stop screw (3) using the lock screw (4).
Important
To prevent it from turning while it is being secured, use a 10 mm wrench
to hold the stop screw (3) in place.
12. Check the thread tension and readjust it if necessary.
(5) - Winder
(6) - Motor ON/OFF
(7) - Display
(8) - POWER
(9) - Thread lever
⑨
⑤
⑦⑧⑥
Adjusting the thread tensioning plate
Additional Instructions M-Type PREMIUM - 00.0 - 04/2018 7
2.2.2 Adjusting the tensioning plate using a mechanical thread
scale
Fig. 4: Adjusting the tensioning plate (1)
To adjust the tensioning plate:
1. Insert the needle thread as shown above.
2. Feed the needle thread through the thread lever and the thread scale.
3. Pull the thread to the left at a consistent rate of speed.
Important
The thread must be pulled off horizontally.
4. Screw in (cw) the stop screw (2) until the tension increases, peaks and
decreases again.
5. When the tension drops while you are screwing in (cw) the stop
screw (2), set the tension to 450±10 cN.
6. Secure the stop screw (2) using the lock screw (1).
Important
To prevent it from turning while it is being secured, use a 10 mm wrench
to hold the stop screw (2) in place.
7. Check the thread tension and readjust it if necessary.
8. Screw in (cw) the stop screw (3) until the tension increases, peaks and
decreases again.
9. When the tension drops while you are screwing in (cw) the stop
screw (3), set the tension to 720±50 cN.
10. Secure the stop screw (3) using the lock screw (4).
(1) - Lock screw
(2) - Stop screw (3) - Stop screw
(4) - Lock screw
①
②
③④
Adjusting the thread tensioning plate
8 Additional Instructions M-Type PREMIUM - 00.0 - 04/2018
Important
To prevent it from turning while it is being secured, use a 10 mm wrench
to hold the stop screw (3) in place.
11. Check the thread tension and readjust it if necessary.
2.3 Checking the adjusted thread tension
2.3.1 Checking the adjusted thread tension using
the Schmidt MST-2000
Fig. 5: Checking the adjusted thread tension (1)
To check the adjusted thread tension:
1. Insert the needle thread as shown above.
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