Adler 745-34 Instruction Manual

Manual, complete

745 - 34 Speedpocket

Sewing unit for runstitching

of rectangular piped pockets

Operating Instructions

Installation Instructions

Service Instructions

Instructions for programming DAC

1

2

3

4

Postfach 17 03 51, D-33703 Bielefeld • Potsdamer Straße 190, D-33719 Bielefeld
Telefon + 49 (0) 5 21 / 9 25-00 • Telefax + 49 (0) 5 21 / 9 25 24 35 • www.duerkopp-adler.com

Ausgabe / Edition: 08/2005 Printed in Federal Republic of Germany Teile-Nr./Part.-No.: 0791 745171

745 - 34 Speedpocket

Manual, complete

Summary

Operating Instructions

Installation Instructions

Service Instructions

Instructions for programming DAC

Interconnection diagram

9870 745131 B

9890 745001 B

Pneumatic circuit plan

9770 745002

Index Page:

Preface and general safety instructions

Part 1: Operating Instructions 745-34 Speedpocket

1. Description of product ........................................ 3

1.1 Description of proper use ........................................ 3

1.2 Briefdescription............................................. 3

1.3 Technicaldata .............................................. 4

1.4 Optional equipment ........................................... 5

2. Operation ................................................. 7

2.1 Swingingthefoldingstationaside................................... 7

2.2 Pushing the covering hood back and removing the fabric sliding sheet ............ 8

2.3 Tilting the machine head up ...................................... 11

2.4 Needles and threads .......................................... 12

2.5 Threading in the needle thread .................................... 15

2.6 Winding up the hook thread ...................................... 16

2.7 Changing the bobbins .......................................... 17

2.8 Threadtension.............................................. 19

2.9 Stackingcontrol ............................................. 20

2.10 Cornerknifestation........................................... 21

2.10.1 Swingingthecornerknifestationout/in .............................. 22

2.10.2 Adjustingthecornerknives ...................................... 23

2.11 Referenceposition-Startingthesewingcycle-Quickstop................... 24

2.12 Flapandpipingprojection ....................................... 25

2.13 Piping strip length ............................................ 26

2.14 Workingmethod ............................................. 27

2.14.1 Working method (production of trousers) .............................. 28

2.14.2 Sewingwithflap ............................................. 31

2.14.2.1 Sewing without light-barrier ...................................... 31

2.14.2.2 Sewingwithlight-barrier ........................................ 33

3. Maintenance ............................................... 34

3.1 Cleaning .................................................. 34

3.2 Weeklylubrication............................................ 36

1. Description of product

1.1 Description of proper use

The 745-34 Speedpocket is a sewing unit determined to sew light to
medium-weight material, i.e. fabrics made of textile fibres or leather.
These materials are used in the clothing industry.

Generally only dry material should be processed with this machine. It
should not contain any hard objects.

In general, the seam is made with core thread, Polyester fibre or cotton
threads.
The dimensions for needle and hook threads can be taken from the
table in chapter 2.4.

Before using any other threads it is necessary to estimate the
consequent risks and to take corresponding safety measures, if
required.

This sewing unit must be installed and operated in dry and well-kept
rooms only. If it is operated in other rooms, which are not dry and
well-kept, further measures, which are to be agreed upon, can become
necessary (see EN 60204-31:1999).

We, as a manufacturer of industrial sewing machines, take it for
granted that at least semi-skilled operators will be working on our
products so that we can assume that all usual operations and, where
applicable, their risks are known to them.

1.2 Brief description

The Dürkopp-Adler 745-34S is a sewing unit for runstitching
of rectangular piped pockets.

The piping strips and additional parts are fed manually. Pocket length
20-200 mm (with flap 180 mm max.).

Machine head

–

Twin needle lockstitch execution

–

Large vertical hooks

–

Externally driven center knife

–

Thread trimming device for needle and hook threads

–

Thread monitor for the needle threads

–

DC direct sewing drive

Step motors for the material feed

New generation of control “DAC III” (DÜRKOPP ADLER Control)

The comprehensive testing and monitoring system MULTITEST is
integrated in the DAC III.
A microcomputer assumes the control tasks, monitors the sewing cycle
and indicates faulty operation and malfunctions on the display.

5

1.3 Technical data

Optional equipment

See chapter 1.4 (Optional equipment of class 745-34S).

Sewing equipment and folders

Information about sewing equipment and folders for the various fields
of application can be taken from the Equipment Sheets of
class 745-34.
Please address your enquiries to the DÜRKOPP ADLER-sales offices.

Machine head: Class 0246 992003

Needle system: 2134-85

Needle distance: 10, 12 mm

Needle size: Nm 80 to Nm 110

Threads: see table chapter 2.4

Stitch type: Twin needle lockstitch

Speed: min. 2000 r/ min

max. 3000 r/ min

Stitch length: min. 2.0 to 3.0 mm

Number of stitches
condensed stitches: 1 - 10 stitches

Number of stitches
bartack stitch: 0 - 5 stitches

Number of stitches condensed
stitches / bartack: 0.5 - 3.0 mm

Pocket length: max. 200 mm

Operating pressure: 6 bar

Air consumption: approx. 6 NL per work cycle

Rated voltage: 1 x 230 V (50/60 Hz)

Dimensions: 1540 x 1120 x 1200 mm (L x W x H)

Working height: 790...980 mm

(upper edge of table top)

Weight: 240 kg

Rated noise level: LC = 81 dB (A)

Workstation-specific emission value
Accordung to DIN 45635-48-B-1

Stitch length: 2,5 mm
Seam length: 180 mm
Speed: 2750 rpm
Material: double fabric

240g/m

2

Measuring point according to
DIN 4895 Part 1
X = 600 mm Y = 0 mm Z = 300 mm

6

1.4 Optional equipment

Order No. Optional equipment

0792 011161 Mounting kit K

Flap clamp,left, for jackets

0792 011162 Mounting kit K

Flap clamp, right, for trousers

0745 427514 Pincer stacker

Universal stacking device (pincer stacker)
for stacking to the side

0797 003031 Pressure line

Connection hose to the pneumatic supply line
with corresponding couplings

7

1

2

8

2. Operation

2.1 Swinging the folding station aside

For work at the sewing point (threading in the needle threads, needle
change etc.) the whole folding station with folder and light-barriers can
be swung out to the right side.

–

Swingthecompletefoldingstation1withfolder

to the right.

Hint:

With the sewing unit turned on, a safety message appears on the
screen of the control panel.

E r r 9002

Folding station sw ung out

–

The sewing point is freely accessible.

Swinging the folding station back

–

Swing the folding station back.

ATTENTION !

After the folding station has been swung back, it must lock in catch 2.

9

2.2 Pushing the covering hood back and removing the fabric sliding sheet

Caution: Danger of injury!

Switchthemainswitchoff.
Push the covering hood back and remove the fabric sliding sheets only
with the sewing unit switched off.

–

Switchthemainswitchoff.

21

Pushing the covering hood back

–

Loosen screw 1 of c overing hood 2.

–

Push the covering hood 2 to the left.

ATTENTION!

Push the covering hood 2 to the left only so far that the cable 3 of the
light-barrier is not damaged.

–

Push the covering hood 2 back to the right again.

–

Secure the covering hood 2 against displacement with the screw 1.

Note!

With the covering hood pushed back, a safety message appears on the
screen of the control panel.

3

3

10

E r r 9004

Covering hood not pushed back.

65 4

Removing the fabric sliding sheet

For changing the hook thread bobbins:
–

Swing the folding station 4 out by 90°.

–

Lift the fabric sliding sheet 6 in the area of pin 5 and swivel it away
to the left.

For complete removal (for maintenance and setting work):
–

Remove the fabric sliding sheet.

11

1

1

2

43

5

12

2.3 Tilting the machine head up

For maintenance work the machine head can be tilted up.
For this purpose the transport carriage must be in its rear position.

Caution: Danger of injury!

Switchthemainswitchoff.
Tilt the machine head up only with the main switch turned off.

Tilting the machine head up

–

–

–

–

–

Remove the covering hood 1.
For this purpose lift the covering hood at the front so that the
locking is released. Lift the covering hood off carefully.

Swing the folding station 2 out by 90°.

Swivel the locking lever 4 up.

Lift the fabric sliding sheet 3 at the front and swivel it to the left.

Lift the machine head in the area of the head cover and tilt it up
carefully until catch 5 locks. The latch snaps in additionally.
The space under the machine table is accessible for cleaning work.

Swinging the machine head back

–

Lift catch 5.

–

Swing the machine head back carefully.

Caution: Danger of injury!

Hold the machine head tight until it is completely at rest when lowered.

Danger of squashing your fingers between machine head and table
top.

–

Insert the fabric sliding s heet.

–

Swivel the locking lever 4 down.

–

Tilt the folding station 2 back and insert it.

–

Put the covering hood 1 on again.

13

2.4 Needles and Threads

Needle system: 2134-85

Recommended
needle size: Nm 90 for thin material

Nm 100 for medium-weight material

Nm 110 for heavy-weight material

High sewing security and good sewability are achieved with the
following core threads:

–

Two-ply Polyester Continuous Polyester core-spun
(e.g. Epic Poly-Poly, Rasant x, Saba C, ...)

–

Two-ply Polyester Continuous Cotton core-spun
(e.g. Frikka, Koban, Rasant, ...)

In case these threads are not available, the Polyester fibre or cotton
threads listed in the table can also be sewn.

Often two-ply core threads are offered by the thread manufacturers
with the same designation as three-ply Polyester fibre threads
(3cyl.-spun). This causes uncertainty with regard to twisting and thread
thickness.

When in doubt unravel the thread and check if it is twisted 2- or 3-ply.
The label no. 120 on the thread reel of a core thread corresponds
e.g. to the thread size Nm 80/2 (see table values in brackets).

In case of monofilament threads it is possible to use needle threads
and hook threads of the same size. The best results are achieved with
soft and elastic threads (software) of the thread size 130 Denier.

Recommended thread sizes:

Needle size Core thread Core thread

Nm

Needle thread Hook thread Needle thread Hook thread

Polyester Polyester Polyester Cotton

continuous core-spun continuous core-spun

Label No. Label No. Label No. Label No.

90 120 (Nm 80/2) 120 (Nm 80/2) 120 (Nm 80/2) 120 (Nm 80/2)

100 100 (Nm 65/2) 100 (Nm 65/2) 100 (Nm 65/2) 100 (Nm 65/2)

110 75 (Nm 50/2) 75 (Nm 50/2) 75 (Nm 50/2) 75 (Nm 50/2)

Needle size Polyester fibre thre-ad Cotton thread

Nm (3cyl.-spun)

Needle thread Hook thread Needle thread Hook thread

90 Nm 80/3-120/3 Nm 80/3-120/3 Ne

100 Nm 70/3-100/3 Nm 70/3-100/3 Ne

110 Nm 50/3-80/3 Nm 50/3-80/3 N e

14

50/3-70/3 NeB50/3-70/3

B

40/3-60/3 NeB40/3-60/3

B

40/4-60/4 NeB40/4-60/4

B

Changing the needles

1

4

5

2

3

Caution: Danger of injury!

Switchthemainswitchoff.
Change the needles only with the main switch turned off.

Danger of cutting your fingers!

Do not reach into the area of the center knife 3 when changing the
needles.

–

Swing the folding station aside (see chapter 2.1)
The needles are freely accessible.

–

Loosen screw 2 and remove the needle from the needle holder 1.

–

Insert the new needle in the drill-hole of needle holder 1 as far as it
will go.

ATTENTION!

Seen from the operator ’s side, the hollow groove 4 of the left
needle must point to the left and the hollow groove 5 of the right
needle to the right (see sketch).

–

Tighten screw 2.

ATTENTION!

After changing over to another needle s ize the needle protection on the
hook has to be readjusted (see Service Instructions).

Hint:

The standard needle size of class 745-34 is Nm 100 .

15

1

2

17

16

15

14

13

3

4

5

6

7

8

9

16

12 11 10

2.5 Threading in the needle thread

Caution: Danger of injury!

Switchthemainswitchoff.
Thread needle threads in only with the sewing unit switched off.

The threading-in of the needle threads is done in ascending numerical
order, as shown in the illustrations opposite:

–

Swing the folding station aside

Left needle

–

Put the thread reel on the thread reel holder.

–

Thread the thread from the thread reel through the drill-hole 1 of
the thread reel holder.

–

Guide the thread through the guide 2.

–

Guide the thread through the drill-hole in support p late 3.

–

Guide the thread through the guide 5.

–

Guide the thread through the tensions discs of needle thread
tension 6.

–

Guide the thread through the thread controller spring 8 .

–

Guide the thread through the drill-hole in support p late 10.

–

Thread the thread through the drill-hole in thread lever 17.

–

Guide the thread downward through the thread puller 16.

–

Thread the thread through the guide 15, through the needle thread
monitor 14 and through the thread guide 13 (not visible).

–

Thread the thread through the guide 12 (not visible), through the
drill-hole in the needle holder and through the eye of the needle.

Right needle

–

Put the thread reel on the thread reel holder

–

Thread the thread from the thread reel through the drill-hole 1 of
the thread reel holder.

–

Guide the thread through the guide 2.

–

Guide the thread through the drill-hole in the support plate 3.

–

Thread the thread through the tension disc of the needle thread
tension 4.

–

Thread the thread through the guides 5 and 7.

–

Guide the thread through the thread controller spring 9 .

–

Guide the thread through the drill-hole in support p late 10.

–

Thread the thread through the drill-hole in the thread lever 17.

–

Thread the thread downward through the thread puller 16, through
the guide 15, through the needle thread monitor 11 and through the
thread guide 13.

–

Thread the thread through the guide 12 (not visible), through the
drill-hole in the needle holder and through the eye of the needle.

–

Clamp the threads in the needle thread catcher and cut them off.

17

2.6 Winding up the hook thread

1

The external bobbin winder allows to wind up the hook threads
independent of sewing.

–

Remove remaining thread from the winder hubs before winding-up.

–

Put the thread reel on the thread reel holder.

–

Thread the thread through the drill-hole 1 of the unwinding arm
(see picture on the left).

–

Guide the thread through the guide 4.

–

Guide the thread through the bobbin thread tension 2.

–

Prewind the thread to the right in the front and hind reserve
grooves of the bobbin hub.
The full r eserve grooves guarantee a secure winding even with
monofilament threads.

–

Press the bobbin retainer 3 against the bobbin hub.
The winder starts.
After reaching the set bobbin filling quantity the winder stops
automatically.
See the Service Instructions for setting the bobbin filling quantity.

43 2

18

2.7 Changing the bobbins

21

ATTENTION!

Switch the main switch off before changing the bobbins.

After a certain number of seams the hook thread stock on the bobbin is
used up.

With the remaining thread monitor switched on the message Err 9602
appears on the screen.

After the corner incision the workpiece is moved out or stacked
respectively.

The sewing unit can only be r estarted after the bobbin change. (See
chapter “Setting the number of stitches”).

Removing the empty bobbin

–

Switchthemainswitchoff.

–

If the transport carriage is in front position, push it to the rear by
hand.

–

Swing the folding station aside.

–

Lift the fabric sliding sheet and swivel it to the left
(see chapter 2.2).

–

Lift the upper part of the bobbin case in the area 2.
The bobbin case retainer 1 is lifted simultaneously.

–

Remove the upper part of the bobbin case together with the empty
bobbin.

–

Remove the empty bobbin from the upper part of the bobbin case.

19

21

Inserting a full bobbin

–

Insert a full bobbin in the upper part of the bobbin case 2.

–

Pull the thread through slit 5 under tension spring 6.

–

Pull a thread length of approx. 4 cm out of the upper part of the
bobbin case.
When the thread is being pulled off, the bobbin must turn in the
direction of the arrow ( in the opposite direction to the hook
rotation).

–

Insert the upper part of the bobbin case 2 with the full bobbin in the
lower part of the bobbin case.

–

Close the bobbin case retainer 1.

–

65

Put the fabric sliding s heet on again.

–

Switchthemainswitchon.

–

Start a new sewing cycle.
The stitch counting has been reset to the old value. (see
Programming Instructions “Adjusting programs)

20

2.8 Thread tension

The interlacing of the threads must lie in the middle of the workpiece.

Thick and hard material requires a tighter thread tension than thin and
soft material.
In case of thin material a too high thread tension can lead to undesired
ruffling and thread breakage.

3

4

1

2

5

6

Setting the brake spring 4:

In case of a positioned stop of the machine head the brake spring 4
avoids an after-run of the hook thread bobbin.

–

Set the brake spring 4 by alignment.
The brake power is adjusted correctly when the brake spring 4
projects approx. 1 mm above surface 3.

–

When setting the tension s pring 6 the brake power is to be taken
into account.

Setting the tension spring 6:

–

First set only a minimum tension of leaf spring 6 at the adjusting
screw 5.
Increase the hook thread tension: Turn to the right
Reduce the hook thread tension: Turn to the left

–

With the bobbin inserted and the hook thread threaded through the
throat plate a uniform and easy pull-off must be assured.

Setting the needle thread tension:

–

Adjust the needle thread tension until a uniform stitch pattern is
achieved.

–

Adjust the tension of the needle threads at knurled nut 1 (right
needle thread)
and knurled nut 2 (left needle thread).
Increase the needle thread tension: Turn to the right
Reduce the needle thread tension: Turn to the left

21

2.9 Stacking control

The reflected light-barrier 1 monitors the stacking of the sewn
workpiece.
The transport carriage does not run back before the workpiece has
been moved out correctly.

321

If the workpiece is not moved out correctly, the light beam between the
reflected light-barrier 3 and the reflector 1 remains interrupted. A
renewed starting is not possible. After stepping on the pedal an error
message appears.

If the Teflon foil 2 is worn, it has to be replaced.
The Teflon foil has the following functions:

Better withdrawal of material

·

Light beam interruption when the cover is open

·

Caution: Danger of injury!

Do not reach into the run area of the transport carriage when removing
the workpiece.

In case of sewing programs with automatic carriage return the
transport carriage moves to the front after release of the light beam.

–

Remove the workpiece out of the light beam.
A new sewing cycle can be started.

22

ATTENTION !

For a secure function of the stacking control clean the lens of the
reflected light-barrier with asoft cloth once a day.

2.10 Corner knife station

The 745-34S is equipped with a manual corner knife station.

The setting of the corner knives with regard to the pocket length is
done by adjusting the k nife block.

The distance of the corner knives to the seam is manually adjustable.

The whole knife block can be tilted out in order to make adjusting and
service work possible.

23

2.10.1 Swinging the corner knife station out / in

1

Caution: Danger of injury!

Switchthemainswitchoff.
Swing the corner knife station out only with the sewing unit switched
off.

Swinging the corner knife station out

–

Swing the corner knife station 1 out to the left.
The knives are accessible for adjusting and service work.

Swinging the corner knife station in

–

Swing the corner knife station 1 back under the sewing unit and let
it catch.

ATTENTION!

The corner knife station must audibly lock when being pushed in.

24

Hinweis:

If the corner knife station is swung out with the sewing unit switched
on, the following message appears:

Err 9001

2.10.2 Adjusting the corner knives

4321

Caution: Danger of injury!

Switchthemainswitchoff.
Adjust the corner knives only with the sewing unit switched off.

–

Swing the corner knife station out (see chapter 2.10.1)

Setting the angle of the corner knives

The angle of the corner knife is adjusted by turning the knife blocks 2
and 4.

–

Loosen screws 1 and 3.

–

Turn the knife blocks 2 and 4 equally.

–

Tighten screws 1 and 3.

–

Adjust the angle of the other pair of knives correspondingly.

Height of the corner knives

The corner knives are not height-adjustable.
The knives always cut through completely.

65

–

Swing the corner knife station in (see chapter 2.10.1).

Seam beginning Seam end

Position of the adjustable knife block

The position of the adjustable knife block corresponds to the seam
length L1.

–

Loosen clamping lever 5 and set seam length L1 on scale 6.

–

Tighten clamping lever 5.

Straight pocket corners

Right and left corner knife
incisions lie parallel

25

2.11 Reference position - Starting the sewing cycle - Quick stop

Reference position

The reference position is necessary in order to get a defined initial
position.

–

Switchthemainswitchon.
The control is initialized.

–

The display shows briefly

bF4 (Program version)745(Program number)

–

The control checks whether the transport carriage is in its rear end
position.
If not, the message “Reference run” is shown on the screen.

rEF

–

Step back on the pedal.
The reference run starts.
The transport carriage runs in its rear end position.

–

The display changes over to the seam program set before (e.g. L1

-180 mm).

Starting the sewing cycle

–

Step forward on the pedal.
By repeated stepping on the left pedal the various steps of the
positioning sequence are started sequentially.

–

For positioning corrections:
Step back on the pedal.
The last s tep of the positioning sequence is undone.
A new positioning can be made.

–

Step forward on the pedal.
The sewing cycle is started.

Quick stop

The safety system of the 745-34S offers two possibilities for an
immediate shut-down of the sewing unit in case of faulty operation,
needle breakage, thread breakage etc.:

–

Step back on the pedal.
The current step of the positioning sequence or the sewing cycle
respectively is stopped immediately.
The following message appears:

Err 9601

–

Step back on the pedal again.
The carriage runs out of the feeding area.

–

Press key “RST” on the control panel.
The current sewing cycle is stopped.

26

2.12 Flap and piping projection

For the unhindered passage of the workpieces at the folder the
maximum projections of piping, flap and material thickness (see
sketch) must not be exceeded.
Please take the maximum allowable piping strip widths for the
respective sewing equipment (E-No.) from the Equipment Sheets of the
745-34.

a

1

b

4

5

2

3

6

3

NA

Setting the sewing depth of flap 1

Stop guide 3 determines the sewing depth and thus the flap projection.
–

Loosen screws 2 and 4.

–

Adjust stop guide 3

–

Tighten screws 2 and 4.

1: Folder
2: Piping projection,

max. 40 mm

3:Flap
4: Guide plate on the folder
5: Flap projection,

max. 20 mm

6: Piping strip

NA: Seam distance
a, b: Material passage

on the folder

1

2

3

4

27

2.13 Piping strip length

The length of the piping strip must be dimensioned in such a way that it
projects approx. 20 mm beyond the seam beginning and seam end.
Thus the piping strip length is as follows:

Piping strip length = Sewing length + 2 x 20 mm

28

2.14 Working method

Working method Remarks

A Piped pockets,

manual positioning of piping strips,
flaps and other additional parts

On the following pages the working method is described.
The description is divided into the following items:

Positioning points

This item indicates which positioning points are used for the various
workpieces (e.g. left and right pieces).

Aligning the positioning aids

This section describes the adjustment and alignment of the positioning
aids (e.g. positioning marks, marking lamps, stop guides etc.).

Positioning and starting the sew ing cycle

Under this item the individual positioning steps are listed with
common positioning examples.

Caution: Danger of injury!

Do not reach under the downholder, the feeding clamp and the folder
during the positioning process.

29

2.14.1 Working method (Production of trousers)

Possible processing variants

–

Front trousers pockets with pocket bag positioned below

–

Hind trousers pockets with or without flap, with pocket bag
positioned below

Positioning method

Example: Hind trousers without flap, with pocket bag positioned below

1st step:
–

Select the pocket program on the control panel

–

Push the pocket bag under pocket bag clamp 1 and position it at
the marks 2.
As marks you can use e.g. adhesive tape attached to the fabric
sliding sheet.

2nd step:
–

Position hind trousers at the “rear positioning point” 4 and at
mark 3.

–

Touch the pedal.
The hind trousers is firmly clamped in its position by the fabric
downholder 5.

–

Smooth out the clamped hind trousers in the area of the dart.

3rd step:
–

Touch the pedal.
The feeding clamps run forward and lower onto the workpiece. A
separate lowering of the clamp halves can be programmed.
For example: the right clamp lowers and the fullness from the
trousers is manually smoothed out to the left. Then lower the left
clamp.

–

Position the piping strip 7 on the feeding clamps flush at the front
edges 8.
The alignment of the various piping types on the feeding clamps is
described more precisely in the following.
See“Positioningthepipingstrip”.

–

Touch the pedal.
The folder 6 lowers.

–

Touch the pedal once again.
Thesewingcyclestarts.

30

1st step:

2nd step:

2

1

3rd step:

5

3

4

6

7

8

31

12

Positioning the piping strip

Double piping:

–

Position the piping strip centered on the feeding clamps and flush
at the front edges.

Left single piping with separately positioned right facing:

–

Position the piping strip on the left feeding clamp flush with the
cutting line.

–

Position the facing on the right feeding clamp.
This positioning method requires the flap clamp “right” (Order
No.0792 011162) available as optional equipment.

–

The edges 1 and 2 have to be sufficiently caught by the needle, but
must not be cut by the center knife.

Left single piping with grown-on facing

–

Positionthepipingstripatthestopguide3ontheleftfolding
sheet.

ATTENTION!

In case of grown-on facings the right folding s heet
must not close.
Pull off the hose coupling from the right feeding clamp

.

32

3

2.14.2 Sewing with flap

2.14.2.1 Sewing without light-barrier

For the simultaneous sewing-in of flaps or other additional parts the
following optional equipment is required according to the field of
application:

Production of trousers: Right flap clamp (Order No. 0792 011162)

Or Left flap clamp (Order No. 0792 011161)

21

Form stop for the flap

The unmachined part 1 is delivered with the flap clamp 2.
It has to be machined as a form stop corresponding to the flap used.

ATTENTION!

The flap length must correspond to the desired length of the pocket
opening.

33

Sewing w ith the flap at the right (production of trousers)

–

For the production of trousers always position the flap at the “Rear
positioning point” (light spot 5).
The “Rear positioning point” applies as a fixed point also for other
sewing units (further flap lengths).

–

Attach the positioning mark 4 for the hind trousers to the fabric
sliding sheet.

–

The sketch shows the positioning of a right hind trousers part 3
with flap.

–

Position the left hind trousers parts in reflected image.
The position of the flap remains unchanged.

3

5

4

4

34

2.14.2.2 Sewing with light-barrier

21

When attaching flaps, seam beginning and seam end are recognized
by a light-barrier.

Positioning the flap

The positioning marks 1 and 2 on the folder limit the sewing area for
the attaching of flaps.

–

Always position the flaps within the marked area.

If the flap is not positioned correctly, the error message
Err 9721 or Err 9722 appears.

Correction of seam beginning and seam end

The correction of the seam beginning (NA) and seam end (NE) when
sewing with light-barrier is done in the pocket correction program (see
Programming Instructions).

35

3. Maintenance

3.1 Cleaning

Caution: Danger of injury!

Switchthemainswitchoff.
Maintenance work must only be done with the sewing unit s witched off.

A clean sewing unit protects from malfunctions!

Clean and check daily:

–

Clean the area around the hooks 1 and 2 with the compressed air
pistol.

36

21

Clean and check daily:

–

Check the water level in the pressure regulator.
The water level must not reach the filter element.
After screwing in the drain screw 1 blow the water out of the water
separator 2 under pressure.
The filter element 1 s eparates dirt and condensed water. After a
certain operating time wash the dirty filter tray and the filter
element with benzine and blow clean with the compressed air
pistol.

ATTENTION!

Do not use any solvents for washing out the filter tray and the filter
element!
They destroy the filter tray.

12

37

3.2 Weekly lubrication

For lubricating the sewing unit use exclusively the lubricating
oil DA-10.

DA-10 can be obtained from the sales offices of
DÜRKOPP ADLER AG.

Check the oil level in the oil reservoir 3 for lubrication of the
machine head

–

Tilt the machine head up (see chapter 2.3).

–

The oil level in the oil reservoir 3 must not drop below the “Min”
marking.

–

If necessary, fill some oil up to the “Max” marking through the
drill-hole in the inspection glass.

Check the oil level in the oil reservoir 5 for lubrication of the hook

–

Tilt the machine head up (see chapter 2.3).

–

Fill the oil reservoir 5 with oil up to the “Max” marking through the
nipple 4 (see sketch).

3

38

45

4

5