Strobel VEB 200-1 User manual

For the professional user
Für den professionellen Anwender
Betriebsanleitung
Class:
Klasse:
Dated:
Stand:
VEB200-1 Ausf. 2
VEB200-2 Ausf. 2
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 guarantee 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 particularly
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 Classes VEB200-1 and VEB200-2
Contents
1General notes on safety..............................................................................................5
2General .......................................................................................................................7
2.1 Operating instructions.....................................................................................7
2.2 Class identification, serial number and orientation of the machine.................7
2.3 Range of applications.....................................................................................7
2.4 Technical data................................................................................................8
3Installation and putting into service.............................................................................9
3.1 Unpacking the machine..................................................................................9
3.2 Installation (Fig. 1 and Fig. 2).........................................................................9
3.3 Sense of rotation ..........................................................................................10
4Instructions for use....................................................................................................11
4.1 Needles and threads ....................................................................................11
4.2 Inserting the needle......................................................................................11
4.3 Threading and thread course (Fig. 3)...........................................................13
4.4 Thread tension (Fig. 2).................................................................................14
4.5 Thread take-up lever (Fig. 2)........................................................................14
4.6 Stitch depth control.......................................................................................14
4.6.1 Setting the stitch depth (Fig. 2)...............................................................14
4.7 Cloth retainer................................................................................................15
4.7.1 Presser stopper.......................................................................................17
4.7.2 Setting the presser stopper for sewing across cross-seams
(Fig. 4, Fig. 7 and Fig. 8)................................................................17
4.7.3 Setting the automatic plunger.................................................................17
4.8 Setting the material guide.............................................................................17
4.9 Material feed.................................................................................................18
4.9.1 Setting the stitch length (Fig. 2)..............................................................18
4.9.2 Setting the feed dog................................................................................18
4.10 Sewing drive.................................................................................................18
4.11 Seam lock.....................................................................................................19
4.11.1 General information ................................................................................19
4.11.2 Switching on the seam lock....................................................................19
4.11.3 Seam lock................................................................................................19
4.11.4 Thread tension at seam lock ..................................................................20
4.11.5 Feed dog at seam lock............................................................................20
4.11.6 Plunger lowering at seam lock................................................................20
4.11.7 Switching off the seam lock....................................................................20

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5Operating the machine..............................................................................................21
5.1 Switching on .................................................................................................21
5.2 Placing and removing the fabric - sewing process........................................22
5.3 Sewing..........................................................................................................23
5.3.1 Bluff edge blindstitch hemming (Fig. 6)..................................................23
5.4 Problems during sewing and possible solutions...........................................27
6Machine maintenance...............................................................................................30
7Variable sewing tools ................................................................................................30
8Optional extras..........................................................................................................32
8.1 Thread trimmer.............................................................................................32
8.2 Digital display 392.0637................................................................................32
8.3 Pneumatic lifting...........................................................................................32
8.4 Seam lock.....................................................................................................32
Subject to change without prior notice

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1 Every person in charge of setting up, operating, servicing and repairing the
machine must first read and understand the operating instructions and
particularly the safety instructions before starting up the machine.
General notes on safety
Failure to comply with the following safety instructions can lead to bodily
injury or damage to the machine.
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. Only use the machine in the intended manner and never without the
provided guards. Always observe the pertinent safety regulations.
4. Switch off the main switch or pull the power plug for threading, changing
the reels, exchanging sewing tools such as needle, gripper, needle plate,
transport devices, possibly cutter and cutting block, for cleaning and when
leaving the workplace as well as for maintenance.
5. General maintenance tasks may be carried out only by properly trained
persons in accordance with the operating instructions.
6. Repair work, retrofitting and maintenance may be carried out only by
technicians or specially trained personnel.
7. When servicing or repairing pneumatic equipment, the machine must be
disconnected from the pneumatic supply. Exceptions are only allowed for
adjustment work and tests of functionality performed by specially trained
technicians.
8. Only specially qualified technicians may work on the electrical equipment.
9. It is forbidden to work on electrically live components! Exemptions are
covered by the EN50110 (DIN VDE0105) regulations.
10. Any retrofitting or alterations to the machine may only be performed under
strict compliance with all pertinent safety regulations.
11. Only use our approved spare parts when servicing and/or repairing the
machine.
12. It is forbidden to operate the sewing head until it is determined that the
entire sewing unit complies with EU provisions.
13. It is essential that you observe and follow these instructions as well as the
generally valid safety regulations.

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14. Warning instructions given in the operating instructions that pertain to
especially dangerous parts of the machine must be indicated at these
positions using a safety symbol.
Warning instructions given in the operating instructions that pertain to
special injury hazards for operating personnel or technicians must be
indicated at these positions using a safety symbol.

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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
The operating side of the machine is the basis for descriptions referring to
sides. The class identification (type) as well as serial and model number (after
the dash) is located on the right hand side of the housing.
Class identification, serial number and orientation of the
machine
2.3 Classes VEB200-1 and VEB200-2 are suitable for bluff edging thin fabrics up to
approx. 400 grammes.
Range of applications
The Kl.VEB200-1 has a fixed plunger on the left and a spring-loaded plunger
on the right as well as two spring-loaded cloth retainers on a 9.5 mm needle
plate.
The right cloth retainer is combined with a regulating screw which limits the
cloth retainer lift-off upwards.
The Kl.VEB200-2 has a spring-loaded plunger on the left and right. It is also
delivered with a 9.5 mm needle plate. Both cloth retainers are spring-loaded
here and combined with a knurled screw which limits the cloth retainer lift-off
upwards.
The range of applications of the different machines can be extended by
exchanging the variable sewing tools, i.e. those other fabric qualities than the
above mentioned ones can be sewn as well.
Variable sewing tools please see point 7.

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2.4
Recommended rated speed 1800 min-1
Technical data
Machine pulley diameter dw 71 mm
Min. sewing drive power 550 W
Toothed belt pulley/machine Z = 20
Toothed belt profile HTD 5M-15
Stitch length-upper feed 4 - 7 mm
(depend on fabric)
Kind of stitch single thread chain stitch bluff edge blind stitch
Stitch type 105
Needle system GROZ-BECKERT 1669 EEO
Needle size 80
Thread polyester continuous filament
Thread size 200/2
Pneumatic connection 6 bar
Average air consumption depending on the equipement
Required space 0.5 m x 1.1 m
Noise:
Average noise level at a speed of
n = 1800 min-1: LpAm 70 dB (A)
Noise test according to DIN 45635-48-1 KL3

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3
3.1
Installation and putting into service
The VEB200 is delivered either complete or as sewing head with Direct Drive.
The reel stand, gear rods, oil and other machine accessories can also be found
in the frame packaging.
Unpacking the machine
Make sure that all accessories have been unpacked before throwing away any
packing material.
3.2 Installation (Fig. 1 and Fig. 2)
ATTENTION!
DANGER of bodily injuries or finger bruises through
pulling in of garments or hairs! The machine may not be
operated without belt guards for head and sewing drive.
If the machine head is supplied without stand and sewing drive first make the
borings into the table top as shown in the table top drawing. Mount rods and
treadles and electric connections according to the connecting diagram.
Mount the sewing drive. Electric connection as per connecting diagram shown
in the mechanic’s instructions.
Mount the head to the table top according to Fig. 1 using 4 screws (3) and 4
washers (2).
Mount the lifting and sewing drive operating rods as shown in Fig. 1.
When the top part is delivered with the direct drive attached underneath, then
the control box and the set-point adjuster need to be mounted under the table
top. Additionally the control bars between set-point adjuster and pedal need to
be hooked in.
Make sure that all screws on the stand are tight and retighten them, if
necessary.
ATTENTION!
Before putting the machine into service make sure that the
electric connecting data on the sewing drive's name plate,
mainly voltage and frequency, correspond to your electric
network.

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Fig. 1
3.3 The correct sense of rotation of the hand wheel is clockwise. Sense of rotation
The positions are properly set in the factory.

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4
4.1
Instructions for use
The sewing quality can be influenced to a considerable extent by choosing the
most suitable needles and threads for the material to be sewn. It is
recommended to use controlled GROZ-BECKERT needles system 1669 EEO
only.
The machine is supplied with size 80 needles.
Needles and threads
Notice: A perfect needle is of great importance for a good sewing result.
Damages of the needle point which often can be made visible under
a magnifier only may deteriorate the sewing result. Replace the
needle in time!
We recommend twisted polyester filament threads of size 200/2 respectively.
Because of their high strength and ability to slide, combined with a low volume
they are to be preferred over a spun thread.
Guaranteed remark!
This machine has been set and sewn off with genuine
GROZ-BECKERT needles.
No guarantee can be granted if the settings are modified
for using other needle types.
4.2 Inserting the needle
ATTENTION!
Switch off machine electrically and confirm that the
machine is really in standstill position by operating the
treadle for the sewing drive control before changing the
needle.
Otherwise DANGER of finger bruises and needle through
stitches.
The curved needle shape determines its position in the needle lever. Attention
should be paid only to ensure that the needle piston is pushed to the stop in the
channel of the needle lever and that the screw (1) Fig. 2 of the needle clamping
plate is tightened well.

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Fig. 2

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4.3 Threading and thread course (Fig. 3)
ATTENTION!
DANGER of bodily injuries! Switch off machine electrically
and confirm that the machine is really in standstill position
by operating the treadle for the sewing drive control before
threading.
Fig. 3 shows the correct threading by using the thread take-up.
Fig. 3

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4.4 Depending on thread and fabric quality, nature and thickness the thread tension
is set by tension nut (2).
Thread tension (Fig. 2)
4.5 The thread take-up lever (3) avoids thread twist and turning over of the loop,
thus enabling a secure taking up of the loop by looper and needle. There is a
uniform stitch formation and the hem edge is free of pucker.
Thread take-up lever (Fig. 2)
The function of the thread take-up lever is influenced by the thread course
(choice of the eyelet).
4.6 By means of the stitch depth control you can adjust the distance between the
upper edge of the plunger and the needle radius, i.e. the distance the plunger is
lifted or lowered depending on the material thickness. This determines the
depth the needle penetrates the fabric layers hold between plunger and cloth
retainer. This value is called stitch depth.
Stitch depth control
A low stitch depth can result in skip stitches, if the stitch depth is too deep the
needle can stitch through the material.
4.6.1 The left hand stitch depth (outer fabric) is set by means of the adjusting knob
(4) at the front side of the machine.
Setting the stitch depth (Fig. 2)
- turning the knob to the left (+) results in a deeper needle penetration.
- turning the knob to the right (-) means a lower needle penetration.
Per notch the stitch depth is altered by 0.01 mm.
The right hand stitch depth (folded hem) is set by means of the knurled nut
below the right hand plunger (5). This adjustment alters the stitch depth on the
right side in relation to the left plunger. When you sew different materials with
only slightly different thicknesses only the stitch depth into the outer fabric (left)
should be adjusted, since in this case the right plunger is adjusted
automatically.

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4.7 Cloth retainer
ATTENTION!
DANGER of finger bruises through unintended actuation
of the treadle during setting works in the needle plate area.
The needle plate is equipped with two slotted cloth retainers which hold the
material alternately on the corresponding plunger during the time of needle
penetration.
Cl. VEB200-1
The pressure of the cloth retainers left (1) and right (2) on the outer material or
the layers of material can be varied by respectively turning the socket left (3)
and right (4); the threaded pin (7) needs to be loosened respectively for
that.The pressure should be as low as possible to avoid any twist or marks
through the pressure between plunger and cloth retainer, mainly when sewing
delicate fabrics such as e.g. velvet.
However, the pressure should be high enough to make sure that the fabric
cannot move during the time of needle penetration. The setting of the cloth
retainer is of great importance with regard to the sewing quality.
Cl. VEB200-2
This class is equipped with two feathered plungers. This makes it possible to
limit both cloth retainers to the top in order to attain sewing without marking on
the outer cloth.
The limit to the top is set by the two knurled screws left (5) and right (6).
Adjusting the pressure, see VEB200-1.
See also Point “4.7.1 Presser stopper”.

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Fig. 4