Strobel VEB100-3 User manual

For the professional user
Für den professionellen Anwender
Betriebsanleitung
Class:
Klasse:
Model:
Ausführung:
Dated:
Stand:
VEB100-3
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 Class VEB100-3
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 ......................................................................................................9
3.3 Sense of rotation ..........................................................................................11
3.4 Motor drive via V-belts..................................................................................11
3.4.1 Tensioning the V-belt.......................................................................11
3.4.2 Positions of the machine..................................................................12
3.5 Motor drive via Toothed belt.........................................................................14
3.5.1 Tensioning the Toothed belt (Fig. 5)................................................14
3.5.2 Positions of the machine..................................................................15
4Instructions for use..................................................................................................16
4.1 Needles and threads ....................................................................................16
4.2 Inserting the needle......................................................................................16
4.3 Threading and thread course .......................................................................18
4.4 Thread tension..............................................................................................19
4.5 Thread take-up lever ....................................................................................19
4.6 Stitch depth control.......................................................................................19
4.6.1 Setting the stitch depth ....................................................................19
4.7 Cloth retainer (Fig. 8)....................................................................................20
4.7.1 Setting the plunger limit stop for sewing over cross seams (Fig. 8).21
4.7.2 Setting the automatic plunger ..........................................................21
4.8 Material feed.................................................................................................22
4.8.1 Setting the stitch length....................................................................22
4.8.2 Setting the top feed..........................................................................22
4.8.3 Tighten feeding Belts.......................................................................22
4.9 Motor ............................................................................................................23
4.10 Seam lock (version RF)................................................................................24
4.10.1 General............................................................................................24
4.10.2 Switching on the seam lock..............................................................24
4.10.3 Seam lock........................................................................................24
4.10.4 Thread tension at seam lock............................................................25
4.10.5 Feed dog at seam lock.....................................................................25
4.10.6 Plunger lowering at seam lock.........................................................25
4.10.7 Switching off the seam lock..............................................................25

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5Operating the machine............................................................................................26
5.1 Switching on.................................................................................................26
5.2 Placing and removing the fabric - sewing process........................................26
5.3 Sewing..........................................................................................................27
5.3.1 Blind stitch hemming........................................................................28
5.3.2 Attaching the trouser waistband lining (Fig. 12)...............................30
5.3.3 Attaching facings..............................................................................30
5.4 Problems during sewing and possible solutions...........................................31
6Machine maintenance.............................................................................................34
7Variable sewing tools ..............................................................................................34
8Optional extras........................................................................................................36
8.1 Thread trimmer.............................................................................................36
8.2 Digital display 392.0637 ...............................................................................36
8.3 Pneumatic lifting...........................................................................................36
8.4 Seam lock.....................................................................................................36
8.5 Compact drive ..............................................................................................36
8.6 Stand set ......................................................................................................36
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. Please open the
illustrations at the beginning of these operating instructions, so you can follow
the illustrations step by step while reading the instructions.
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 rear side of the housing.
Class identification, serial number and orientation of the
machine
2.3 Class VEB100-3 is suitable for attaching waistbands linings on trousers, also
for waistbands with belt loops attached.
Range of applications
Exchanging the variable sewing tools, i.e., can extend the range of applications
of the different machines that other fabric qualities than the above mentioned
ones could be sewn as well.
Variable sewing tools please see point 7.

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2.4
Recommended rated speed: 2200 min-1
Technical data
Machine pulley diameter dw 80 mm
Min. motor power 550 W
V-belt profile 10 x 6 mm
Toothed belt pulley/machine Z=38
Toothed belt profile HTD 5M-9
Stitch length-upper feed 5 - 8 mm
(depend on fabric)
Kind of stitch: single thread chain stitch blind stitch
Stitch type 103
Needle system GROZ-BECKERT 1669 EEO
Needle size 90
Thread polyester continuous filament
Thread size 120/2
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 = 2200 min-1: LpAm 71 dB (A)
Noise test according to DIN 45635-48-1 KL3

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3
3.1
Installation and putting into service
Strobel machines are supplied either as complete units with head, stand and
motor, or head with motor only, or the head only.
Unpacking the machine
Reel stand, rods and other accessories are packed into the packing.
Make sure that all accessories have been unpacked before throwing away any
packing material.
3.2
Installation
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 motor.
If the machine head is supplied without stand and motor first make the borings
into the table top as shown in the drawing. Mount rods and treadles and electric
connections according to the connecting diagram.
Mount the motor. Electric connection as per connecting diagram shown in the
motor's operating instructions.
The upper component must be fastened to the provided rubber plate on the
table top. The belt guard must be installed after inserting the V-belt.
Mount the V-belt and tense it according to “3.4.1 Tensioning the V-belt“.
Mount the belt guard.
Mount the lifting and motor operating rods.
Using a compact motor means to assemble the control box and speed
controller under the table. Also the operating rod between speed controller and
pedal has to be connected.
After assembling the single parts of the reel stand mount it to the right hand
side of the tabletop.
Make sure that all screws on the stand are tight and retighten them, if
necessary.
Mount the synchronizer and set it as described under “3.4.2 Positions of the
machine“.

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ATTENTION!
Before putting the machine into service make sure that the
electric connecting data on the motor's name plate, mainly
voltage and frequency, correspond to your electric network.
All rust protection agents, such as Vaseline and similar agents have to be
wiped off carefully from the sewing tools before putting the machine into
service.

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3.3 The correct sense of rotation of the hand wheel is clockwise in line of vision on
the hand wheel.
Sense of rotation
3.4
3.4.1
Motor drive via V-belts
Tensioning the V-belt
Caution! Danger of injury!
When checking the belt tension, switch off the machine at
the mains. Do not operate the machine without the belt
guard. Otherwise there is a DANGER of crushing
fingers, of injuries to the body and of pulling in parts of
clothing.
The tensioning of the V-belt is carried out by swivelling the motor underneath
the table plate after releasing the retaining nut with SW 24, (1) in Fig. 1.
The V-belt must not be tensioned too much, especially with the stop motor. You
should be able to compress it with light thumb pressure by about 2 cm.
Too little V-belt tensioning can impair the positioning of the machine and
therefore impair the function sequence.
Fig. 1

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3.4.2 Positions of the machine
Caution! Danger of injury!
Danger of crushing fingers and needle through stitching as
well as pulling in of parts of clothing.
Keep fingers and hands away from moving parts when
setting the position generator and checking the positions
with switched-on machine.
General:
Stop motors require a position generator, which takes the mechanical setting of
the machine from the main screw and transmits this to the control of the motor.
With this, for instance, the thread cutter can always be electrically approached
in exactly the same needle looper position. (Fig. 2)
The correct position of the position generator to the flange is marked with a
spot of paint.
To adjust or to remove, release the two clamping screws (1), Fig. 2. tighten
these firmly prior to commissioning.
Fig. 2
With positioning with plunger reset, the motor reverses after thread cutting for a
certain value, to facilitate the insertion of the sewing matter. This does not
affect the setting of the position generator.

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Machine with or without thread cutter:
The machine requires a needle position and, depending on the sewing drive,
possibly also a reference position.
Reference position (Fig. 3):
The reference position must be set in such a way, that the point of the
needle in the direction of the insertion stitch closes with the right (inner)
edge of the needle slide plate.
Fig. 3
Needle position (with stop in and outside the seam (Fig. 4)):
The needle position must be set in such a way, that with the machine
stopped,the hook of the thread knife catches the thread loop lying over
the looper securely without touching the looper.
Afterwards check by manually activating the thread cutter.
Fig. 4
Notes for sewing drives which have two needle positions:
The above mentioned needle position is position 2 at the sewing drive.
It is essential that position 1 is set with consultation of the operating
instructions of the sewing drive.

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3.5
3.5.1
Motor drive via Toothed belt
Tensioning the Toothed belt (Fig. 5)
CAUTION! Danger of injury!
Switch off the machine at the mains when checking the belt
tension. Do not operate the machine without belt guard.
Otherwise DANGER of crushing fingers, of injuries to the
body or of pulling in of part of clothing.
The toothed belt should not be tensioned too much. You should be able to
compress it with light thumb pressure by about 5 mm.
Too little or too tight toothed belt tensioning can impair the positioning of the
machine and therefore impair the function sequence.
Tensioning the toothed belt (Fig. 5):
-Release the upper and the bottom retaining screw (1), (2) at the upper
part of the machine.
-Pull out the motor slightly and tighten the bottom retaining screw (2)
slightly.
-Tension the toothed belt by swivelling the motor.
-Tighten the upper and the bottom retaining screw (1), (2) again.
Fig. 5

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3.5.2 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 thread cutter:
The machine requires a needle position and depending on the sewing drive,
possibly also a reference position.
Reference position (Fig. 3):
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 right (inner) edge
of the needle slide plate.
Needle position (with stop in and outside the seam (Fig. 4)):
The needle position must be set in such a way, that when the machine is
stopped, the hook of the thread knife catches the thread loop lying over
the looper securely without touching the looper.
Notes for sewing drives which have two needle positions:
The above mentioned needle position is position 2 at the sewing drive.
It is essential that position 1is set with consultation of the operating instructions
of the sewing drive

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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.
Needles and threads
The machine is supplied with size 90 needles. There are also size 90 available.
Notice: A perfect needle is of great importance for a good sewing result.
Damages of the needlepoint, 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 120/2 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 motor 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 (4) (Fig. 6)of the needle
clamping plate is tightened well.