Strobel 3200D series User manual

For the professional user
Für den professionellen Anwender
Betriebsanleitung
Class:
Klasse:
Model:
Ausführung:
Machine number:
Maschinen-Nr.:
Dated:
Stand:
3200D
1
Operating Instructions
Spezialmaschinen GmbH

Im Zeichen der Qualität
ou nd the Strobel trademark on every Strobel
machine leaving our works. And with good reason.
This symbol is a guaranteen of the high quality of
our products. Quality which creates trust – trust
in our technology, our service and, not least of all,
in our good name.
ie nden die Strobel-Schutzmarke auf jeder
Strobel-Maschine, die unser Werk verlässt.
Und das aus gutem Grund. Denn dieses Zeichen
garantiert Ihnen die hohe Qualität unserer
Produkte. Qualität, die Vertrauen schafft – in unsere
Technik, unseren Service und nicht zuletzt in unseren
guten Namen.
S
Y
The sign of quality

trobel clients know that they can expect a particu-
larly high standard of performance from our company
and our machines. Now you have settled for one of
our products. For us this is a source of encouragement
and of obligation to Justify your trust.
If you wish to prot from the performance and
efciency of your Strobel machine as long as possible,
exact handling and thorough care is necessary. For this
reason we kindly request that you read the operating
instructions closely. It provides all the information you
need for trouble free operation.
And if you do happen to need a spare part the enclosed
spare parts list gives a complete overview. It is clearly
classied according to components so that you can nd
the required part quickly and easily. In order to avoid
errors we request you to quote machine class, machine
number and part number completely on your spare part
order.
We wish you lots of success in your work with your
new Strobel machine.
S
A decision with future
Spezialmaschinen GmbH

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Operating Instructions
STROBEL Class 3200D
Contents
1General notes on safety............................................................................................5
2General .....................................................................................................................7
2.1 Operating instructions.....................................................................................7
2.2 Class description, machine number and reference position left/right.............7
2.3 Machine applications......................................................................................7
2.4 Technical data................................................................................................8
3Set-up and commissioning........................................................................................9
3.1 Unpacking of the machine..............................................................................9
3.2 Setting up the machine (Fig. 1)......................................................................9
3.3 Sense of rotation (Fig. 3)..............................................................................12
3.3.1 Tension of the toothed belt (Fig. 4)..................................................12
3.3.2 Positions of the machine..................................................................13
3.4 Intermediate venting (Fig. 5).........................................................................14
4Notes on usage.......................................................................................................15
4.1 Needles and threads ....................................................................................15
4.2 Inserting the needle (Fig. 6)..........................................................................15
4.3 Threading and thread run (Fig. 7).................................................................16
4.3.1 Threading the reel thread (Fig. 8)....................................................17
4.4 Thread tensioning (Fig. 6)............................................................................18
4.4.1 Thread tightening spring – needle thread (Fig. 9)............................18
4.4.2 Thread tensioning – reel thread (Fig. 10).........................................18
4.5 Winding up the thread (Fig. 11)....................................................................19
4.6 Adjusting the stitch length (Fig. 11 and Fig. 12)...........................................20
4.6.1 Adjusting the upper feed path (Fig. 6)..............................................20
4.7 Stitch depth...................................................................................................21
4.7.1 Adjusting the stitch depth (Fig. 2 and Fig. 6)....................................21
4.7.2 Digital stitch depth display (Fig. 13).................................................21
4.7.3 Changing the battery (fig. 13)...........................................................22
4.8 Plunger stop .................................................................................................23
4.8.1 Adjusting the plunger stop (Fig. 14).................................................23
4.9 Interval gear..................................................................................................24
4.10 Sewing drive.................................................................................................24

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5Operating the sewing machine................................................................................25
5.1 Switch-on......................................................................................................25
5.2 Inserting and removing the sewing material – work sequence.....................26
5.3 Sewing..........................................................................................................27
5.3.1 Hemming with blind stitch ................................................................28
5.4 Problems during sewing and troubleshooting...............................................29
5.5 Incorrect stitches (Fig. 17)............................................................................32
6Machine maintenance.............................................................................................33
6.1 Lubricants.....................................................................................................33
Subject to change without prior notice

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1
The non-compliance with the following notes on safety can lead to bodily
injuries or to damages of the machine.
General notes on safety
1. The machine must only be operated by persons familiar with the relevant
operating instructions and who have been instructed accordingly.
2. Before commissioning also read the notes on safety and the operating
instructions of the sewing drive manufacturer.
3. The machine must only be operated according to its designation and not
without the appropriate guards; all explicit safety regulations must also be
observed.
4. For threading, for changing the reels, for exchanging sewing tools such as
needles, hooks, stitch plate, transport devices, if necessary cutter and
cutting block, for cleaning, when leaving the workplace and for
maintenance work, switch off main switch or pull mains plug. With a
mechanically operated coupling motor without activation lock, wait until the
motor has stopped.
5. General maintenance work must only be carried out by appropriately
instructed persons in accordance with the operating instructions.
6. Repair, modification and maintenance work must only be carried out by
qualified staff or by appropriately instructed persons.
7. During maintenance and repair work at pneumatic devices, the machine
must be disconnected from the pneumatic supply network. Exceptions are
only admissible during adjusting work and function test by appropriately
instructed qualified staff.
8. Work at the electrical equipment must only be carried out by qualified
staff.
9. Work at parts and devices under voltage is not allowed. Exceptions are
regulated by the regulation EN50110 (DIN VDE0105).
10. Modification or alteration at the machine must only be undertaken under
consideration of all explicit safety regulations.
11. Only spare parts released by us for use are to be used during repairs.
12. The commissioning of the upper part is prohibited until it has been
determined that the entire sewing unit complies with the regulations of the
EC guidelines.

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13. Warning notes in the operating instructions of the machine, which point
out special points of danger, are marked at the appropriate positions with
the safety symbol.
Warning notes in the operating instructions of the machine which point out
special dangers of injury for operating or qualified staff, are marked at the
appropriate positions with the symbol
It is essential that you observe and follow these notes as well as the
generally valid safety regulations.

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2
2.1
General
Any person involved in the installation, operation, maintenance and repair of
the machine must have read and understood the operating instructions and
mainly the safety instructions before starting the machine.
Operating instructions
2.2
For side-referenced descriptions (right, left), the operating side of the machine
is the starting base.
The class identification (type) is in front, the machine and model number (after
the dash) is on the upper right under the cover on the housing.
These data are also noted on the machine number on the front of the cover
page of the operating instructions.
Class description, machine number and reference position
left/right
2.3
Kl. 3200D
Machine applications
Two thread blind stitch double lock stitch machine provides a high-quality
processing of edges in the field of women's clothing. The special procedure
using the world's unique machine class 3200D the edge may be piping, without
showing a visible seam. This is located 2 mm below the edge piping. Between
the fabric and tape.
The 2-thread lockstitch blind stitched seam guarantees both. The safety as well
as the required elasticity.
Two spring loaded plungers enable passing the cross seams without any
markings on the outside.
The machine has been designed specifically for fine and finest fabrics of
women's clothing.

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2.4 Speed: Technical data
Max. mechanically admissible 1200 min-1
Recommanded rated speed 1200 min-1
Min. motor power 0.37 KW
Compact drive:
Toothed belt pulley/machine z = 38
Toothed belt profile HTD 5M-9
Stitch length-upper feed 2 - 6 mm
Kind of stitch: two thread blind stitch lock stitch
Stitch type 313
Needle system STROBEL 1828 E
Needle size 70, 80, 90
Recommended thread twisted polyester filament
Recommended thread size 120/2, 200/2
Air pressure 6 bar
Average air consumption 0.31 l per work stroke
Foot print 0.6 m x 1.1 m
Noise:
Average noise level at a speed of
n = 1200 min-1: LpAm 74.9 dB(A)
Noise test according to DIN 45635-48-1 KL3

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3
3.1
Set-up and commissioning
Strobel machines are supplied either complete as upper part with motor or as
upper part only.
Unpacking of the machine
With complete delivery the machines are subdivided in smaller packing units
due to the great weight and to prevent transport damages.
The upper part is unscrewed form the frame. The cotton stands, rod system, oil
and further machine accessories are located in the frame packing.
Prior to disposing of the packing material it must be carefully checked whether
all accessories parts have been unpacked.
3.2 Setting up the machine (Fig. 1)
CAUTION! Danger of injury!
Due to pulling in of parts of clothing or hair as well as
danger of crushing of fingers!
The machine must not be operated without a guard for the
belt for the upper part and for the motor.
Screw the upper part to the table plate. (Fig. 2)
The bolts 135.0187 and the pressure spring 161.0176 are enclosed with the
machine accessories and must be fitted as shown in Fig. 2.
The pedal rod system must be suspended according to Fig. 1
.
Push on the knee lever and secure with knurled screw. (not necessary with
pneumatic venting, see also point “3.5 Intermediate venting (Fig. 5)”)
The cotton stand is mounted at the back on the right on the table plate after
assembly of the individual parts.
Check all screws at the frame for tight fit and retighten if necessary.
ATTENTION!
Prior to commissioning the machine it must be checked
whether the electric connection data on the type plate of the
motor, especially the network voltage and the frequency,
are according to the data of your current network.
All rust prevention agents, such as Vaseline or similar, must be carefully
removed from the sewing tools prior to commissioning the machine.

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Fig. 1
Class 3200D

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Fig. 2

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3.3 The correct sense of rotation of the hand wheel is clockwise when looking at it
from the front.
Sense of rotation (Fig. 3)
Fig. 3
3.3.1 Tension of the toothed belt (Fig. 4)
CAUTION! Danger of injury!
To check the tension of the toothed belt, switch off the
machine electrically, pull the mains plug and ensure the
machine has actually stopped by pressing the motor pedal.
The machine must not be operated without a belt guard for
the motor.
The tension of the toothed belt should not be too great. Slight thumb pressure
should be able to push the belt through by approx. 10 mm.
A too little or too great toothed belt tension can deteriorate the positioning of the
machine and therefore impair the function sequence.
Tensioning the toothed belt (Fig. 4):
- Release upper and lower retaining screw (1), (2) at the machine upper
part.
- Pull out the motor slightly and tighten the lower retaining screw (2) slightly.
- Tension the toothed belt by swivelling the motor.
- Retighten the upper and lower retaining screw (1), (2).

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Fig. 4
3.3.2 Positions of the machine
CAUTION! Danger of injury!
Danger of pulling in parts of clothing and of hair and danger
of crushing fingers and stitching fingers with needles!
When checking positions with switched-on machine keep
fingers and hands away from moving parts.
Machine with or without pneumatic:
The machine requires a needle position and depending on the sewing drive,
possibly also a reference position.
Reference position (if necessary, i.e. sewing drive DC1500-ST220A):
The reference position must be set in such a way, that the point of the
needle in direction of the insertion stitch closes with the (inner) edge of the
needle slide plate.
Needle position (with stop in and outside the seam:
The needle position needs to be set in such a way that when the machine
is at standstill and the lifting is open the tip of the needle points in the
direction of the stitch and the plunger, transporter, and presser plate are at
one level (the position is located at about 8 mm after the upper needle
turning point).
Notes for sewing drives which have two needle positions:
The needle position mentioned above is position 2 at the sewing drive.
The position 1 at the sewing drive should be set in such a way that when
the machine is at standstill the tip of the needle stands about 3 mm in the
direction of the stitch after the lower needle turning point.

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3.4 If an intermediate venting with the knee lever should become necessary with
attached pneumatic venting, it can be mounted on the screw 130.0041 in its
usual position.
Intermediate venting (Fig. 5)
Fig. 5

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4
4.1
Notes on usage
By selecting the most suitable needles and threads for the relevant sewing
material one can influence the sewing quality decisively.
Only tested STROBEL needle system 1828 E should be used.
The machine is supplied with needles of thickness 90.
Needle thicknesses 70 and 80 are also available.
Needles and threads
Note: An intact needle is of decisive importance for a good initial stitch.
Bent needle points, which can in part only be visible under a
magnifying glass, impair the sewing result.
Therefore, exchange your needles in good time!
We recommend endless twined polyester threads with a thickness of 120/2 or
200/2. They are to be preferred to a spun thread, due to their high strength and
good sliding ability at low thread volume.
Guaranteed remark!
This machine has been set and sewn off with genuine
Strobel needles.
No guarantee can be granted if the settings are modified
for using different needle types.
4.2 Inserting the needle (Fig. 6)
CAUTION! Danger of injury!
Switch off the machine before changing the needle and
ensure the machine is off by pressing the pedal for
switching the motor. Otherwise there is a danger of injury
through crushing and needle stitches.
Due to the bent shape of the needle the position in the needle lever is given.
Care must only be taken that the needle piston is pushed in the slot of the
needle lever up to the stop and that the needle clamping plate 485.0009 is
tightened with the screw 170.0438.

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Fig. 6
4.3 Threading and thread run (Fig. 7)
CAUTION! Danger of injury!
Switch off the machine prior to threading and ensure the
machine is off by pressing the pedal for switching the
motor.
Fig. 7 shows the correct threading by using the thread sensor.