Minerva Boskovice 1183i-7 User manual

Instruction manual
1183i - 7
Minerva Boskovice, a.s., Sokolská 60, CZ - 680 17 Boskovice
Tel.: [phone], 453433, 494111 Fax: [phone] http://www.minerva-boskovice.com
Edition/Vydáno/Herausgegeben/Edition/Editado: 04/2010 Printed/Tisk/Druck/Imprimé/Impress ã o: Czech Republic S735 000644
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ontents - part A - Instruction manual:
1.Proper use of the machine 1
2.Description of the machine 1
3.Machine sub-classes and sewing categories 2
.1 Sub-class 2
.2 Sewing categories 2
4.Survey of equipment 3
4.1 Basic necessary equipment 3
411 Needles3
412 Wheel feeders3
413 Top roller holder3
414 Top rollers3
415 Throat plate3
416 Throat plate inserts3
41 7 Trimmer knives fixed3
418 Trimmer knives movable3
419 Connecting cables of the head to the drive3
4.2 Optional eqiupment 4
5.Technical data 4
6.Operation of the machine 5
6.1 Threading a thread 5
6.2 Bobbin thread winding 5
6. Inserting the bobbin and threading the lower thread 5
6.4 Regulating the thread tension 6
6.5 Needle replacement 7
6.6 Regulation of pressing the top roller 7
6.7 Lifting the top roller up 7
6.8 Reverse stitching 8
6.9 Stitch length adjustment 8
6.10 Safety clutch 8
6.11 Starting of the material trimming operation 9
6.12 Control of the material guide regardless the engaged trimming 9
6.1 Control of the material guide with regard to the engaged trimming device 9
6.14 Setting of the material guide 10
6.15 Replacement of the trimming knife 10
6.16 Change of the sewing category 10
7.Electronic control of the machine 11
7.1 Control of sewing by means of control elements 11
711 Via treadle11
712 Via control pushbutton panel11
713 Via control panel V810/V 82011
7.2 Adjustment of automatic functions via control panel for stop motor 12
721 By using stop motor Efka with panel V 81012
7211 Adjustment by means of buttons with fixed setting function12
7212 Setting by means of parameters13
722 By using stop motor Efka with panel V 82014
7221 Adjustment by means of buttons with fixed setting function14
7222 Setting by means of parameters15
8.Maintenance 16
Operating instructions for eventual trouble shooting 17
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Foreword
This instruction manual is intended to help the user to become familiar with the machine and take advantage of its application
possibilities in accordance with the recommendations.
The instruction manual contains important information on how to operate the machine securely, properly and economically.
Observation of the instructions eliminates danger, reduces costs for repair and down-times, and increases the reliability and life
of the machine.
The instruction manual is intended to complement existing national accident prevention and environment protection regulations.
The instruction manual must always be available at the machine/sewing unit.
The instruction manual must be read and applied by any person that is authorized to work on the machine/sewing unit. This
means:
- Operation, including equipping, troubleshooting during the work cycle, removing of fabric waste
- Service (maintenance, inspection, repair and/or)
- Transport.
The user also has to assure that only authorized personnel work on the machine.
The user is obliged to check the machine at least once per shift for apparent damages and to immediatly report any changes
(including the performance in service), which impair the safety.
The user company must ensure that the machine is only operated in perfect working order.
Never remove or disable any safety devices.
If safety devices need to be removed for equipping, repairing or maintaining, the safety devices must be remounted directly after
completion of the maintenance and repair work.
Unauthorized modification of the machine rules out liability of the manufacturer for damage resulting from this.
Observe all safety and danger recommendations on the machine/unit! The yellow-and-black striped surfaces designate permanend
danger areas, eg danger of squashing, cutting, shearing or collision.
Besides the recommendations in this instruction manual also observe the general safety and accident prevention regulations!
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General safety instructions
The non-observance of the following safety instructions can cause bodily injuries or damages to the machine.
1. The machine must only be commissioned of the instruction book and operated by persons with appropriate training.
2. Before putting into service also read the safety rules and instructions of the motor supplier.
3. The machine must be used only for the purpose intended. Use of the machine without the safety devices is not permitted. Observe
all the relevant safety regulations.
4. When gauge parts are exchanged (e.g. needle, presser foot, needle plate, feed dog and bobbin) when tread-ing, when the workplace
is left, and during service work, the machine must be disconnected from the mains by switching off the master switch or disconnecting
the mains plug.
5. Daily servicing work must be carried out only by appropriately trained persons.
6. Repairs, conversion and special maintenance work must only be carried out by technicians or persons with appropriate training.
7. For service or repair work on pneumatic systems the machine must be disconnected from the compressed air supply system.
Exceptions to this are only adjustments and functions checks made by appropriately trained technicians.
8. Work on the electrical equipment must be carried out only by electricians or appropriately trained persons.
9. Work on parts and systems under electric current is not permitted, except as specified in regulations DIN VDE 0105.
10. Conversion or changes to the machine must be authorized by us and made only in adherence to all safety regulations.
11. For repairs, only replacement parts approved by us must be used.
12. Commissioning of the sewing head is prohibited until such time as the entire sewing unit is found to comply with EC directives.
It is absolutely necessary to respect the safety instructions marked by these signs.
Danger of bodily injuries !
Please note also the general safety instructions.
IMPORTANT WARNING!
To the feeding network cord, it is necessary to connect the respective network plug which has been approved in the country
of utilizing the machine. This operation should be performed by a worker acquainted with the electric safety rules being in
force in the given country. The supplier is not responsible for any damages caused by defective plug or owing to incorrect
assembly of the plug.
In spite of all safety measures made on the machines, inappropriate actions of the operator may lead to dangerous situations. In
industrial sewing machines, attention should be paid to the following still remaining possible sources of injury:
1. Moving sewing needle
- risk of injury when sewing with raised pressure foot or top roller, because the finger guard is then positioned too high.
2. Moving thread take-up lever
- risk of injury when inadvertently or intentionally inserting the finger(s) between the thread take-up lever and its guard.
3. Moving pressure member
- risk of injury when holding sewn work in immediate vicinity of the pressure member and beginning to insert under the pressure
member a considerably thicker sewn work portion,
- risk of injury when sinking the pressure member.
4. Moving trimming knife
- risk of injury when sewing and trimming with lifted presser element (roller, foot), because the finger guard is high
- risk of injury when inadvertently threading down of the motor threadle.
5. When switched off, the clutch motor slows down by inertia but would be reactivated by an accidental tread-ing down of the
motor treadle. To avoid such risk, it is advised to hold the handwheel by hand and slightly to depress the motor treadle.
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art A - Instruction manual
1. roper use of the machine
The machine is used in the shoemaking industry when sewing uppers of light, medium-heavy and heavy footwear, for sewing on
with simultaneous vertical edge trimming. It is suitable for sewing natural and man made leathers, shoemaking textiles and even
plastic parts of sports shoes. The machine is also used in the fancy goods industry for sewing bags, handbags, rucksacks and
cases from the usual fancy goods materials. When trimming edges, be sure in using always a sharp knife. The knife is driven by
an independent motor. It ensures a high-quality material trimming on inner and on outer curves as well. When trimming soft
materials, in some cases, it is necessary to hold the material trimmed in stretched state in facilitating so the trimming operation.
The machine sews with a double needle stitch. In its standard version, it is provided with lenghtened needles, system 34-35 LR,
suitable for sewing leather. For sewing textile materials, it is necessary to mount also the lenghtened needle, system 34-35. The
machine enables the sewing of both technical and decorative seams which have almost the constant length of the stitch at a
different sewing speed.
Only a dry material, which cannot be thicker than 8 mm when depressed by top roller, can be sewn by these machines, generally.
The material cannot contain any hard subjects, to the contrary case it is possible to work only with applied eye-protective shield.
Such a shield is not available to delivery at this time. Generally threads up to size 500 dtex x x 3 (Labelled number 20) have been
used namely synthetic, cotton or core threads. Whoever should like to use other special threads, that one should consider the
resulting risks and make appropriate safety measures.
The total thickness is determined by sewing with a thicker needle of very strong material. In such case, it is necessary to
considerably reduce the sewing speed below the values indicated in the technical parameters of the machine – par. 5.
These special machines may be installed a operated only in dry and kept up expanses. We, as industrial sewing machines
manufacturers, agree with the fact that our products are operated, at the least, so far learned operators who can carry out all usual
operating functions and suppose their possible risks as perceptible.
Machine noisiness
Machine noisiness has been measured in accordance with the standards ISO 3746, ISO 204 at maximum speed.
Laeq = equivalent machine noise of the self-standing machine on the working place, converted to % machine employment (dB)
- stated in the table
2. opis stroje
It is single needle flat-bed machine. It sews with a double threaded lock-stitch. It has a lower circular feed, needle feed and a top
roller which is driven. There are two possibilities for feeding. At the first step it feeds a lower circular feed, needle and top roller.
Secondly it feeds only the circular feed and the top roller (the needle is above the throat plate). Feeding can be in both directions.
The stitch length can be adjusted with an adjusting dial. Stitch length up to 5 mm at max. sewing speed up to 2500 rpm.
Caution!
Maximum allowed speed must not be exceeded for the given system of sewing. Otherwise it can cause damage to the
feeding mechanism.
The machine is provided with a large-diameter vertical hook, situated to the left from the needle, protected by an safety clutch.
The machine uses a wick lubrication system with central oil supply. The hook is lubricated from an independent oil source.
The simplest sub-class is standardly equipped with a knee operated lever. Specially for the Czech republic and if required with
treadle. Reverse stitching is with a manually operated lever.
Higher sub-classes have always mechanical control like the simplest sub-class, and furthermore there is a possibility of levelling
the needle, thread trimmer, electromagnetic top roller lift and electromagnetic reverse stitching (according to your order).
Each sub-class can be delivered in two sewing categories. Sewing category is determined by the number of the thread label and
the corresponding number of the needle. The machine is adjusted in the factory so that it corresponds to the ordered sewing
category. Changes of adjustment can be carried out only by a skilled and trained mechanic. A stand is in the simplest sub-class
equipped with a lever clutch motor and if required with a stop motor which enables the levelling of the needle.
In higher sub-classes, the stop motor is either situated on the machine table top or as a minimotor integrated on the machine
head. The type of mechanical top roller lift depending on the stand has one or two treadles.
Type of the Noisiness % machine
machine dB employment
83i-7XX-200 79 20
83i-7XX-300 73 20
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3. Machine sub-classes and sewing categories
3.1 Sub-class
Table
* only for Czech republic
3.2 Sewing categories
This code indication includes the equipment assembled on the machine head, both necessary equipment and optional equip-
ment. The standard configuration of the equipment has been preset, according to the table 2a or 2b, in the factory which includes
only necessary equipment. If the buyer demands a different configuration then the factory allocates a new code indication.
All standard sets of sewing equipment contain:
M 083-wheel feeder with pitch of teeth 0,6 mm
M 73-top roller ø35 mm,
M 34-top roller holder
*When the customer has not supplied another specification, then the following standard configuration is delivered for the given
sewing category.
Table 2a - Sewing category 200
Type of Top roller lift Reverse stitching Thread
the machine trimmer
Class-subclass Via knee Treadle Via electro- Via electro- Via hand Via electro-
-sewing lever mag. + mag. + lever mag. +
category knee lever treadle hand lever
83i-7-XXX
83i-72 -XXX*
83i-747-XXX
83i-757-XXX*
••••
•
••
••
•
Class,subclass,
sewingcategory Usefor sewing Setofsewing equipmnetNo. Trimming distance
mm
Throatplate
cpl. Replaceable stationary
knife
Throatplate
insert Holeof throatplate
mm
Needle
(System/No.)
1183i-7XX-200 medium
M
1183E70200* 1,3 M343 - M345
1,5 S548000265
(134-35 LR-100)
1,3 M581 S080 870226 -
1,4 M581 S080 870231 -
1,5 M343 - M357
1,5 M581 S080 870232 -
1,7 M581 S080 870233 -
2,0 M343 - M358
2,0 M581 S080 870224 -
2,2 M581 S080 870228 -
2,5 M581 S080 870230 -
2,8 M581 S080 870229 -
3,0 M582 S080 870226 -
3,1 M582 S080 870231 -
3,2 M582 S080 870232 -
3,4 S080 870233 -
3,7 M582 S080 870224 -
3,9 M582 S080 870228 -
4,2 M582 S080 870230 -
4,5 M582 S080 870229 -
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Table 2b - Sewing category 300
4. Survey of equipment
This survey does not include the equipment assembled on the stand.
4.1 Equipment (at least one of each from the following group of equipment is assembled)
4.1.1Needles
see tab. 2a, 2b
4.1.2Wheel feeders
M 083-wheel feeder with pitch of teeth 0,6 mm
M 082-wheel feeder with pitch of teeth ,2 mm
4.1.3Top roller holder
M 34-top roller holder ø35 mm
4.1.4Top rollers
M 73-top roller ø35 mm
M 75-rubberized top roller ø35 mm
M 3-smooth top roller ø35 mm
4.1.5Throat plate
see tab. 2a, 2b
4.1.6Throat plate inserts
see tab. 2a, 2b
4.1.7Trimmer knives stationary
see tab. 2a, 2b
4.1.8Trimmer knives movable
S080 870240 - trimmer knife „D“ small radius for the material being trimmed
S080 870244 - trimmer knife „F“
4.1.9Connecting cables of the head to the drive
M 38 - connecting cable to the drive EFKA DC 600/DA82GA; EFKA VD 552/6F82FA and EFKA VD 554/6F82FA
M 055 - connecting cable without any specified drive (with free cable end)
Note: For the machine provided with a minimotor, the cable is component part of the drive thereof.
Class,subclass,
sewingcategory Usefor sewing Setofsewing equipmnetNo. Trimming distance
mm
Throatplate
cpl. Replaceable stationary
knife
Throatplate
insert Holeof throatplate
mm
Needle
(System/No.)
1183i-7XX-300 medium heavy
M-H
1,6 M583 S080 870226 -
2,0 S548000270
(134-35 LR/130)
1183E70300* 1,7 M343 - M346
1,7 M583 S080 870231 -
1,8 M583 S080 870232 -
2,0 M343 - M359
2,0 M583 S080 870233 -
2,3 M583 S080 870224 -
2,5 M583 S080 870228 -
2,8 M583 S080 870230 -
3,0 M343 - M360
3,0 M584 S080 870226 -
3,1 M584 S080 870231 -
3,2 M584 S080 870232 -
3,4 M584 S080 870233 -
3,7 M584 S080 870224 -
3,9 M584 S080 870228 -
4,2 M584 S080 870230 -
4,5 M584 S080 870229 -
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Thickness of
one layer
Number of layers
Minimum
Standard Standard
Maximum
Standard
Range
Standard
Range
Standard
Maximum
4.2 Optional equipment
M 0 0 -built-in lighting (including transformer 230/2V)
M 34 - sewn work guide
M 242 - setting gauge
83 700V-high mortality spare parts kit in plastic box for sub-class without thread trimmer
83 74700V-high mortality spare parts kit in plastic box for sub-class with thread trimmer
S794 2220 2 -halogen lighting (2 V, 20 W - contains transformer)
5. Technical data
Table 3
*The splice with the so-called spur is being mounted as a standard with the sewing categorie 200 and is designed for sewing
thin materials. For sewing thicker materials with a maximum stitch length it is possible to use a splice without spur.
**Splice without spur is mounted as a standard with the sewing categorie 300.
Stitch type Double thread lock-stitch
Top roller stroke 6 mm - via hand lever
2.5 mm - via knee lever, treadle, electromagnet
Hook R 820 - vertical large
Needle System 34-35 LR
System 34-35
Driving unit Lever clutch 4 poles change motor min. 0.4 kW, lewer clutch
2 poles change motor min. 0.4 kW
Stopmotor min. 0.4 kW
Weight of the head max. 46 kg (52 kg head with minimotor)
Weitght of the stand max. 6 kg (38 kg for head with minimotor)
Opening space of machine head 267 x 25 mm
Dimension of bed plate 78 x 5 8 mm
Length of trimmed thread ends 8.... mm
Input machine with clutch motor Max. 700 W
Input machine with stop motor Max. 800 W (600 W with minimotor)
Trimmed material max. thickness - 6 mm
Distance between the needle axis and the work trimmer line .3 - 4.5 mm (according to sewing category)
Power output of the work trimmer motor 25 W
Stroke frequency of the work trimmer knife 3500 strokes/min (constant)
Stroke range of the work trimmer knife adjustable to 2.4 mm
Layout dimensions of the machine(including the stand) 060 x 550 mm
Height of the machine (including the stand) 680 mm
Sewing Sewn material Distance Stitch length Labelled Number Sewing Hook
category between the number of of needle speed
needle axis polyester
and the work thread
trimmer line
mm - mm mm mm mm - - 0,0mm 0,0mm SPM SPM
-200
-medium 2 .3 2.5 5 40 50-30 00 80-0 2500 2500 R 820
see tab. *
-300 2a, 2b
medium heavy .5 -2 .6 3.5 5 20 25;20 30 0-40600 2000
**
R 820
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6. Operation of the machine
6.1 Threading a thread
Caution! Risk of injury!
Before threading a thread, turn the main switch
off and wait until the machine stops!
Thread the threads as it is shown in picture.
Caution!
Not following the correct method of threading a
thread may cause serious damage to the function
of the machine.
6.2 Bobbin thread winding
-Insert the bobbin ().
-Spool counter-clockwise manually onto the bobbin, mini-
mum six threads of the lower thread (3).
-Insert the thread ends into the equipment (4) and cut off the
ends.
-Press the lever (2) until it reaches its limit.
-Switch on the machine.
-The winder will automatically switch off after winding.
-Take off the hook bobbin and cut off the end in the equip-
ment (4).
-The nut (5) is instrumental to thread tension control for
winding. Turning clockwise sense the thread tension is in-
creased and the single threads are more firmly fixed on the
bobbin.
-The tension cannot be so extensive as far as slipping of the
winder friction drive has occured.
6.3Inserting the bobbin and threading the lower
thread
Caution! Risk of injury!
Turn the main switch off and wait until the motor
stops!
-Tilt the shutter () up.
-Insert the bobbin (2) with thread end (3) in the direction as
shown in the picture.
-Thread the thread through the notch (4) and the space (5)
and place under the spring (6).
-Cut off the thread end as shown.
1
5
3
6
2
~0
4
1
2
4
3
5
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6.4 Regulating the thread tension
The thread tension must conform to the thickness of the sewn
threads, thickness and hardness of sewn material (thin and
soft material will fold with high tension) and the kind of seam.
An ordinary fitting seam should be formed with stitches knit-
ted in the middle of the sewn material.
A decorative seam is mostly used with rough threads (20) on
thin material and it has tied up threads on the reverse side of
the material for achieving a decorative appearance.
Thread tension adjustment is by standard sewing (par. 5, ta-
ble 3) conditions in accordance with table No. 4.
If achieving of a decorative seam with stitch knitting on the
underside is wished, it is necessary to decrease the upper
thread tension, it is carried out by turning of nuts (), in the
counter-clockwise sense.
Thread tension
Table 4
Sewing Kind of seam Identified Maximum
category value upper tension of
thread tensionlower thread
N N
2 - 4.5 .5
3Fitting 8 2
Decorative 5
If the maximum lower thread tension exceeds the
values given in table No. 4, it may cause problems
in the beginning of sewing after the previous
thread trim.
Measurement of tension is done by dynamometer.
Warning:
The upper thread tensioner has been loosened automatically
after every trimming and top roller lifting. In these cases the
thread tension cannot be measured.
Regulating the thread tension
Caution! Risk of injury!
Before regulating the lower thread tension, turn
the main switch off and wait until the motor stops.
The upper thread tension is adjusted with nuts (). Its clock-
wise turning increases the tension.
The tension of the auxiliary tensioner (3) should be as low as
possible but it should be on a level so that the upper thread
would not pull out of the tensioner when the work is being
removed.
The lower thread tension is adjusted with a screw (2). Its
clockwise turning increases the tension.
Tension correlation rate defines the depth of the seam tied
through. The result of raising the upper tension will be the
decreasing depth of tie through. The opposite will apply with
the lower thread.
1
3
2
Fitting seam
Decorative seam
Stitch knitting
Stitch knitting
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1
1
1
3
2
6.5 Needle replacement
Caution! Risk of injury!
Before remowing and inserting the needle turn
the main switch off and wait until the motor
stops!
- Turn with the hand wheel as far as the top needle () position
has been reached.
-Loosen the screw (2) and take the needle out.
-When inserting a new needle, care is to be taken that groove
(3) above the needle’s eye was in the same direction as the
hook.
-Tighten the screw (2).
The inserted needle must respond to the sewing
category according to paragraph No. 5, table 3.
Otherwise it will cause damage to sewing, or even-
tually the machine could be broken.
6.6 Regulation of pressing the top roller
The pressing of the top roller should be as low as possible but
on a level so that the top roller would not fly over when needle
comes off the material and that the feeding power got over
the thread pull by stitch tightening.
By turning of the screw () clockwise pressing of the top roller
has been increased, by counter-clockwise turning pressing of
the top roller has been decreased.
6.7 Lifting the top roller up
Mechanical lifting of the top roller is enabled by means of the
hand lever (), which contemporarily, after it has been lifted in
the arrow direction, is locking the top roller in its top position
and turning (adjustment) of the machine is possible. The top
roller can be lifted via knee lever or left treadle - depending on
the machine sub-class. Automatical lifting by means of elec-
tromagnet is described in the paragraph No. 7.
When lifting top roller via knee lever or the treadle
or electromagnet, the needle must be in the upper
position and the machine has to come to a full
stop.
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6.8 Reverse stitching
The change of direction of sewn work can be mechanically
controlled via a reverse stitching lever () by its depression in
the arrow direction (down). The sub-class defines whether
the machine has electromagnetic reverse stitching – see para-
graph No. 7.
6.9 Stitch length adjustment
Stitch length adjustment is by dial (2) by its turning. Turning
clockwise stitch length is decreased, turning counter-clock-
wise stitch is length increased.
If it comes to a substantial change of length of
stitch it is necessary to adjust of the throat plate
insert in accordance with the following paragraph,
by the machines with the thread trimmer.
6.10 Safety clutch
The machine is provided with a safety clutch which disen-
gages the driving unit, when the hook is blocked. Reconnec-
tion must be done in the following way:
Caution! Risk of injury!
Before assembly turn the main switch off and wait
until the motor stops!
-Turn the manually operated wheel as far as you can reach the
suitable point for inserting a screwdriver into the space().
-Continue turning the manually operated wheel in direction
of the arrow located on it, until you feelthe drop in of the
safety clutch.
1
2
1
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6.11 Starting of the material trimming operation
The trimming operation can be started at the beginning of the
seam, but also at any moment during the sewing operation.
In such case, the knife pierces the trimmed material and,
starting from this spot, the trimming operation starts running.
-Put the material to be sewn under the presser foot.
-Engage the trimming device in depressing the engaging
lever () downwards. The trimming knife (2) will move
downwards into its working position.
Caution! Risk of injury!
When starting the trimming operation, do not put
your fingers under the trimming knife.
-Sew a seam.
-Disengage the trimming device in pulling the engaging lever
() upwards.
Especially when starting the trimming operation
in the middle of the trimmed material, do not ex-
ceed its maximum permissible thickness = 6 mm.
This may break the trimming knife. When apply-
ing the maximum sewing speed together with the
maximum stitch length, a smooth trimming cut
cannot be ensured. It is necessary to reduce one
or the other in proceeding to a test on the mate-
rial to be trimmed.
6.12Control of the material guide regardless the
engaged trimming device
-Pull the sphere () in the direction of the arrow (A), until its
pin disengages from the engagement with the lever (2).
-In depressing the handrail (3) downwards, lower the guide
(4) into its working position. Using the inverse procedure,
lift the guide upwards.
6.13 Control of the material guide with regard to
the engaged trimming device
-Disengage the trimming device by means of the lever (5) and
lift the guide (4) in its top position
-Depress the sphere () in the direction of the arrow (B), until
its pin fits into the recess in the lever (2).
-Engage the trimming device using the lever (5). The guide
shifts in its working position. When disengaging the
trimming device, the guide lifts too.
1
2
1
5
3
4
2
A
B
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6.14 Setting of the material guide
Caution! Risk of injury!
Proceed to the guide setting only with the ma-
chine switched off!
-Switch off the machine with the main switch.
-Engage the trimming device (lower the knife in its working
position).
-Loosen the screw ()
-Loosen the screw (2) until the guide (3)bears against the
insert.
-In tightening the screw (2), set the guide (3) in such a way,
so that between the guide and the throat plate there is suf-
ficient clearance, when turning the guide in its vertical posi-
tion.
-For coarse adjustment of the distance of the guide (3) from
the trimming knife, shift the guide (3) into its correct position
before tightening the screw ().
-For fine adjustment of the guide (3) loosen the screw (6)
inside the screw (7). Turn the screw (7) in suitable direction,
until setting the required distance between the guide and
the trimming knife. Retighten then the screw (6), in arresting
so the screw (7).
-The height setting of the guide (3) with the screw (2) may be
done even when the main switch is being switched on.
6.15 Replacement of the trimming knife
Caution! Risk of injury!
Replace the trimming knife only with the machine
switched off!
-Switch off the main switch of the machine.
-Put the knife in its top position, loosen the upper screw (),
unscrew the bottom screw () and shift the knife (2)
downward.
-Slide the new knife into its uppermost position, tighten very
slightly the screws () in such a way, so that the knife may
still slide under the gib (3).
-With a slow movement of the lever (5), lower the knife
downwards.
-Using a screw driver, turn the shaft (6) in such a way, so that
the trimming knife is in its lowest position.
-Push the free end of the trimming knife in shifting it downward
in such a way, so that between its point and the bottom
surface of the throat plate insert there is a clearance of
about 0,2 mm and, at the same time, when turning the shaft
(6) into the highest position of the knife, this knife would
not leave the cutting edge on the throat plate insert.
-Tighten the screws ().
-Check the movement of the trimming knife in turning by
hand the shaft (6).
The trimming knife must not strike in its bottom
dead centre against the throat plate insert. In the
top dead centre, the trimming knife must not leave
the cutting edge on the throat plate insert.
6.16 Change of the sewing category
When proceeding to this change, it is necessary to replace the
throat plate insert (it can be additionally purchased). Together
with the insert replacement, the width of the trimmed edge is
changed - the side setting of the knife must be changed. It is
described in the service book.
76
2
1
3
2
1
5
3
6
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7. Electronic control of the machine
(it is valid for sub-classes equipped with stop motor)
7.1 Control of sewing by means of control elements
7.1.1 Via treadle (treadle positions and function
possibilities)
The position of the treadle is read by the reader, which can
recognise 6 levels. Its meaning is shown on the table.
Treadle Treadle Meaning
position
-2 Foot full backwards Command for thread
trimming (seam finishing)
- Foot slightly Commandlifting
the top roller up
0Neutral position Note
Slightly forwards Command releasing
top roller
2Continually Sewing at minimum
forwards speed (. gear)
3Continually Sewing at second
forwards speed level
: : :
3 Fully forwards Sewing at maximum
speed (2. gear)
ote: It is possible to pre-adjust the needle position (up/down)
and foot position (up/down) by stopping in seam (introduc-
ing the treadle in neutral position). Foot position (up/down)
after seam finishing (pressing the treadle by foot fully back-
wards).
7.1.2 Via pushbutton panel
There are four built-in pushbuttons in the panel with fixed
adjustable functions:
T-bar operation (by pressing this pushbutton during se-
wing the sewn work is feed back)
T2-needle up/down (each press of the pushbutton changes
the needle position)
T3-temporary cancelling (recalling) bar (in case) the bar is
pre programmed at the start and end of the seam, by
pressing the pushbutton down will uniformly switch off;
if it is not chosen it will switch on by pressing the push-
button
T4-revolutions limitation (valid for motor Efka DA82GA)
-reduction of pressure of the presser foot for Mini-stop
EFKA DA320 (see The instructions for assembling with
Mini-stop, par. 5.2.4)
7.1.3 Via control panel Efka V 810/V 820
These functions are standardly assigned to the pushbuttons
A, B:
A-cancelling (recalling) the bar (the same function as T3 of
the pushbutton panel)
B-needle up/down(the same function as T2 of the push-
button panel)
ote: function of the A,B pushbuttons can be changed by
different adjustment of parameters 293,294 (see the parame-
ters list of driving unit Efka DA82GA).
T 1 T 2 T 3 T 4
1÷13
0
-1 -2
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2
7.2 Adjustment of automatic functions via control
panel for stop motor
7.2.1 By using stop motor Efka with panel V 810
Functioning pushbuttons engagement:
Pushbutton P Recalling and program mode termination
Pushbutton E Confirmation of program mode changes
Pushbutton + Increase of value displayed in program
mode
Pushbutton - Decreasing value displayed in program
mode
Pushbutton Start bar SINGLE/DOUBLE/OFF
Pushbutton 2 End bar SINGLE/DOUBLE/OFF
Pushbutton 3 Automatic top roller lifting after stopping
at the seam ON/OFF
Automatic top roller lifting after thread
trimming (end of seam) ON/OFF
Automatic presser foot lifting after
thread trimming (end of seam) ON/OFF
Automatic reduction of pressure of the
presser foot ON/OFF (only for DC 550/
DA320; see The instructions for assem-
bling with Mini-stop, par. 5.2.4)
Pushbutton 4 Basic position of needle UP/DOWN
Pushbutton A For cancelling respectively recalling
the bar
Pushbutton B For switch over the needle position
UP/DOWN respective shift pushbutton
in program mode
Symbol C Connection of automatic revolutions
Symbol D Connection of lighting barrier
Symbol E The machine is running
Symbol F The revolutions limitation switch on
Symbol G Connection of lower thread controller,
flashing light indicator symbol when
the threads supply on the bobbin is
running out
The arrows on the display indicate switching the functions
which are displayed by symbols above the pushbuttons on.
7.2.1.1Adjustment by means of buttons with fixed setting
function
ote: It is important to finish the seam in order to reach
effective button pressing (press the treadle fully backwards
down).
Setting start bar:
Drive enables sewing start bar automatically. It is necessary to
choose the type (single, double, off) and number of stitches
which will be sewn forwards and backwards.
The arrow above its symbol shows the type of bar (chosen by
gradually pressing pushbutton ). It will be displayed follow-
ing after pressing pushbutton .
Arv (SAv) XXX - number of stitches of start (fancy) bar for-
wards or
Arr (SAr) XXX - number of stitches of start (fancy) bar back-
wards) for about 3 sec.
At this time you can change the number of stitches by gra-
dually pressing the pushbutton + or -.
Setting end bar:
The same applies to the start bar (setting by the means of
pushbutton 2).
Erv (SEv) XXX - end (fancy) bar number of stitches forwards
Err (SEr) XXX - end (fancy) bar number of stitches backwards
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3
ote: The last section of end bar must have at least 3 stitches.
Foot position adjustment by stopping at the seam (by neutral
position of treadle) and after finishing seam (by neutral posi-
tion of treadle):
Setting is by means of pushbutton 3, arrow indication above
the corresponding symbol.
Needle position adjustment by stopping at the seam:
Setting is by means of pushbutton 4.
7.2.1.2 Setting by means of parameters
Drive memory contains the parameters which enables sewing
system tuning. These parameters have exact meaning and
they are divided into 3 levels. Further parameters which are
available only for operation will be quoted. Each parameter
has its (sequence) number and value.
General procedure by changing parameters of operation level:
-switch the main switch on or finish the seam by pressing the
treadle fully backwards down
-press pushbutton P on the panel V 80
-it will be displayed on the display F 000 (000 it is the number
of parameter)
-by several times pressing + (or -) set the requested number
of parameter
-push pushbutton E down and it will be shown the value of
parameter on the display
-you can change the value by means of pushbutton + or –
-by pushing pushbutton E down you will change the sequence
to the following number of parameter
-by pushing pushbutton P down you will leave the mode of
changing parameters
ote: .For permanent memory storing of changed pa-
rameter, it is necessary to press treadle forwards
down after changing of parameters.
2.Mode of changing parameters is possible only af-
ter finishing of the seam.
Number of stitches in bars:
Number of stitches is stored in parameter’s number.
No. of parameter Value range Description
of parameter of parameters
000(080) 0-254 Number of stitches of
start (fancy) bar forwards
00 (08 ) 0-254 Number of stitches of
start (fancy)bar backwards
002(082) 0-254 Number of stitches of
end (fancy) bar backwards
003(083) 0-254 Number of stitches of
end (fancy)bar forwards
Sewing according to sewing program:
Drive with panel V8 0 automatically enables sewing of seam
with setting number of stitches. It is necessary to set in corre-
sponding number of stitches, and initialisation of sewing pro-
gram.
No. of parameter Value range Description
of parameter of parameters
007 0-254 Number of stitches
0 5 ON/OFF ON/OFF sewing under
sewing program
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4
ON/OFF thread trimmer:
No. of parameter Value range Description
of parameter of parameters
0 3 ON/OFF Thread trimmer
ON/OFF
7.2.2 By using stopmotor Efka with panel V 820
Functioning pushbuttons engagement:
Pushbutton P Call and termination of programming mode
Pushbutton E Confirmation when changing programming
mode
Pushbutton + Increasing the value displayed in program-
mingmode
Pushbutton - Reducing the value displayed in program-
ming mode
Pushbutton Start bar SINGLE/DOUBLE/OFF
Pushbutton 2 Stitch counting FORWARD/BACK/OFF
Pushbutton 3 Light barrier function
LIGHT-DARK/DARK-LIGHT/OFF
Pushbutton 4 End bar
SINGLE/DOUBLE/OFF
Pushbutton 5 Function
TRIMMING/TRIMMING+EJECTOR/OFF
Pushbutton 6 Automatic top roller lifting after having
stopped inside the seam ON/OFF
Automatic top roller lifting after trimming
ON/OFF
Automatic presser foot lifting after thread
trimming (end of seam) ON/OFF
Automatic reduction of pressure of the
presser foot ON/OFF (only for DC 550/
DA320; see The instructions for assem-
bling with Mini-stop, par. 5.2.4)
Pushbutton 7 Basic needle position UP/DOWN
Pushbutton 8 Lower thread waste controlling ON/OFF
Pushbutton 9 Operation pushbutton - programmable
Pushbutton 0 Programming/processing of 40 possible
sewing sections (seams)
Pushbutton A For cancelling or calling the bar
Pushbutton B For switching needle position UP/DOWN,
resp. shifting pushbutton in the program-
ming mode
Symbol C Designating symbol C for code number
Symbol D Designating symbol F for parameter
number
Symbol E Programme number in TEACH IN mode
Symbol F Seam number in TEACH IN mode
Symbol G Run blocking ON
Symbol H Blocked insertion by pushbutton
Symbol I Fault reporting
Symbol J Insertion of stitch number in TEACH IN
mode
Symbol K Connected lower thread controller, flash-
ing symbol when running out thread re-
serve on bobbin
Symbol L Limitation of revolutions ON
Symbol M Right needle disconnected
symbol N Evening stitches for light barriee in the
TEACH IN mode
Symbol O Machine is running
A B
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5
Symbol P Automatic revolutions ON
Symbol Q Left needle disconnected
The arrows on the display indicate switching the functions
which are displayed by symbols above the pushbuttons on.
7.2.2.1Adjustment by means of buttons with fixed setting
function
ote: It is important to finish the seam in order to reach
effective button pressing (press the treadle fully backwards
down).
Setting start bar:
Drive enables sewing start bar automatically. It is necessary to
choose the type (single, double, off) and number of stitches
which will be sewn forwards and backwards.
The arrow above its symbol shows the type of bar (chosen by
gradually pressing pushbutton ). It will be displayed follow-
ing after pressing pushbutton .
Arv (SAv) XXX - number of stitches of start (fancy) bar for-
wards or
Arr (SAr) XXX - number of stitches of start (fancy) bar back-
wards for about 3 sec.
At this time you can change the number of stitches by gra-
dually pressing the pushbutton + or -.
Setting end bar:
The same applies to the start bar (setting by the means of
pushbutton 4).
Erv (SEv) XXX - end (fancy) bar number of stitches forwards
Err (SEr) XXX - end (fancy) bar number of stitches backwards
ote: The last section of end bar must have at least 3 stitches.
Foot position adjustment by stopping at the seam (by neutral
position of treadle) and after finishing seam (by neutral posi-
tion of treadle):
Setting is by means of pushbutton 6, arrow indication above
the corresponding symbol.
Needle position adjustment by stopping at the seam:
Setting is by means of pushbutton 7.
Trimming switched ON/OFF:
To be set using pushbutton 5.
Sewing programme ON:
To be switched on using pushbutton 0.
Switching ON/OFF the function of the pushbutton F:
The pushbutton F on panel can have assigned one of the
following functions:Sst - softstart
SrS - fancy bar
Frd - reverse angle after trimming
7.2.2.2 Setting by means of parameters
Drive memory contains the parameters which enables sewing
system tuning. These parameters have exact meaning and
they are divided into 3 levels. Further parameters which are
available only for operation will be quoted. Each parameter
has its (sequence) number and value.
General procedure by changing parameters of operation level:
-switch the main switch on or finish the seam by pressing the
treadle fully backwards down
-press pushbutton P on the panel V 820
-on the display there is no data shown
-by depressing the pushbutton E several times, set the
required parameter (without having displayed the parameter
number)
-you can change the value using pushbuttons + or -
-by depressing the pushbutton E you will pass in the given
sequence to the following parameter
-by depressing the pushbutton P down you will leave the
mode of changing parameters
A B
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6
ote: .For permanent memory storing of changed pa-
rameter, it is necessary to press treadle forwards
down after changing of parameters.
2.Mode of changing parameters is possible only af-
ter finishing of the seam.
Number of stitches in bars:
Number of stitches is stored in parameter’s number.
No. of parameter Value range Description
of parameter of parameters
000(080) 0-254 Number of stitches of
start (fancy) bar forwards
00 (08 ) 0-254 Number of stitches of
start (fancy) bar backwards
002(082) 0-254 Number of stitches of
end (fancy) bar backwards
003(083) 0-254 Number of stitches of
end (fancy) bar forwards
The drive with the panel V 820 enables sewing automatically
up to 40 seams distributed up into eight programmes with the
given stitch numbers and sewing direction (forwards/rear-
wards). For more detailed information see the original driving
instructions.
8. Maintenance
Caution! Risk of injury!
Maintenance work can only be carried out when
the machine is off and the motor stops.
Maintenance work which must be carried out and the intervals
between them and set out in the following table.
Maintenance work Interval
Removing throat plate and its cleaning.
Cleaning of circular feed dog, hook and space
around feeding wheel of material and thread
residues. To clean it, use brush. It is prohibited
to use compressed air for cleaning without day
protective guards preventing injury of persons
with flying impurities.
Hook lubrication - (one drop of oil).
Checking the oil level in the hook
lubrication oil tank. week
Checking the oil level in the oil tank
of the central distribution. month
Regreasing of the greasing spots
of the trimming system (pins with felt).
For the lubrication of this machine Esso SP-NK 0, DA 0 or
an equivalent quality lubricating oil is recommended (viscossity
at 40° C: 0 mm2/s; flash point: 50°C).
The oil tank () of the central distribution and the tank (2) of
the hook lubrication are to be filled the holes (3) up to the
mark max.
1
3
2
A B
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