Duerkopp Adler 745-26, 745-28 Installation Instructions Manual

Contents page:

Part 2: Installing instructions Kl. 745-26/ -28

1. Items supplied

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2. Setting up the sewing machine

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.1 Removing the carriage safety device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.2 Movement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.3 Adjusting working height . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.4 Checking V-belt tension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3. Attaching fitments removed for despatch

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3.1 Pedal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3.2 Thread pillar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.3 Trays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.4 Folder (working method A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.5 Folder and

gripper-folder (working methods B, C) . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.6 Table wideners (accessories) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.7 Stacker (accessory) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.8 Suction device (accessory) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4. Electrical connection

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4.1 Connecting the DAC operating panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4.2 Checking rated voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.3 Checking positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5. Pneumatic connection

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

6. Lubrication

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

7. Starting up

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

1. Items supplied

–

frame with DC mo to r fo r th e u pp er m ac h ine as se mb l y

–

stepping motors for handling material and for the longitudinal
adjustment of th e trimming devi c e

–

class 935-246-00 twin-needle double-lockstitch machine
745-26: with component se t 0 93 5 7 45 30 4 f or j o i nt ne ed l e-bar
switching
745-28:with component set 0935 745307 for separate needle-bar
switching

–

DAC control device

–

reflex light barrier for flap sensing

–

two guide lamps for fabric placement

–

sewing lamp

–

compressed- a ir ma i nt en an c e u ni t wi t h c o mp r ess e d- a i r pi s t ol

–

thread pillar

–

trays for it em s to be s ew n o n o pe r at or’s right a nd l ef t

–

tools and hard wa re s e t

2. Setting up the sewing machine

Attention!

The sewing machine may only be set up by specialist trained
personnel.

2.1 Removing the carriage safety device

The carriage safety device 1 locks the carriage in its rearmost position.
It must be remo v ed be fo re the sewing mac hi n e i s s e t u p.

–

Remove the carriage safety device 1 after undoing the nuts.

1

3

2.2 Movement

The sewing-machine chassis is fitted with four castors for movement
around the plant.

Attention!

Prior to commissioning the sewing machine the sound absorbers 3 (in
the tools and hardware set) must be fitted to the four chassis supports.
Reverse the castors so that the machine is motionless and stable.

–

To move the machine extend the four castors by turning the
adjusting screws 2 to the left.
The chassis s u pp or t s mu s t h av e en ou gh free floor space t o a l l ow
for movement .

–

After moving the sewing mac hi n e, l ow er i t by t urn i ng th e
adjustment screws 2 to the right.
All four chassis supports must be firmly on the floor.

2.3 Adjusting working height

Working height can be adjusted between 87 and 110 cm (measured to
the top of the t ab l e p l at e).

It is set to the minimum of 87 cm prior to despatch.
–

Undo locking screws 1 on all four spars of the chassis.

–

Adjust the base plate to the required working height.
To prevent the base p l at e f r om ti lting, pull it ou t (o r pu s h i t i n) b y
the same amount on both sides.

–

Tighten locking sc rews 1.

3

1

2

4

2.4 Checking V -belt tension

When the machine has been moved the V-belt tension (which is
pre-set prior to despatch) must be checked.

When the tension is correct it should be possible to depress the middle
of the V-belt 1 by about 10 mm by pressing on it with a finger.

Correcting V-belt tension:

–

undo screw 2

–

swivel sewing drive 3 until the required V-belt tension is produced

–

tighten scre w 2

1

2

3

5

3. Attaching fitments removed for despatch

3.1 Pedal

Depending on th e ve r si on , t he s ew i ng ma chi n e i s e qu i pp ed ei t he r wi t h
a single peda l or w i th two (right and le ft).

The pedal 4 is attached to the lowe r cr oss - m embe r 5:
–

Fix the pedal 4 to the lower cross-member 5 with the bracket 3.
The oblong sl ot s i n t he br a c ket 3 enable the hei g ht to be slightly
adjusted.
Adjust the h ei g ht of br a c ket 3 s o th at the pedal 4 can be ea s i l y
operated.

–

The second bracket 1 (supplied) acts as a support.
Attach bracket 1 as shown in the illustrations,
placing the fo ur s e pa r at or ri n gs 2 be tw ee n brackets 1 and 3 .

–

Fit pedal linkage 6.

–

Slightly loosen locking screw 7.

–

Adjust the he i gh t o f t he pedal linkage 6 s o th at the pedal 4 is
horizontal when fully depressed.

–

Tighten locking sc rew 7.

1 2 3 4

5

6

3 5

6

7

6

3.2 Thread pillar

–

Insert thread pillar 1 into the hole in the table plate and secure it
with nuts 2 and washers.

–

Fit and align thread discs and unwinder arms as shown in the
illustration.

3.3 Trays

–

Insert trays

with rod 5 into locking piece 4 and align.

–

Tighten locking lever 3.

1

2

3
4
5

7

3.4 Folder (working method A)

–

Place Folder

6 with span be ar ing 5 on the mount ing bolt of lock ing
piece 1 as far as it will go.
The pin 3 must e nt er o bl o ng s l ot 4.

–

Tighten locking sc rew 2.
The resulting setting will be as pre-set prior to despatch.

3.5 Folder and gripper-folder (working method B, C)

Fixing the Folder

–

swivel folding unit away to the side

–

place Folder

3 on mounting 2

–

tighten locking screw 1.
Mounting 2 in c orporates a cent eri n g h ol e .
Tightening the loc k i ng sc r ew 1 a ut om atically bring s ab ou t the
correct setting.

3
4

5

6

1
2

1

2

3

8

Fixing the gripper-folder

–

swivel folding unit inwards

–

push gripper-folder with mounting 5 onto rod 7 as far as it will go
The pin 4 must enter oblong slot 3.

–

tighten loc k ing s c rew 8
The resulting setting will be as pre-set prior to despatch.

–

Insert compressed-air connection 6 for needle spreading.

–

With working method C insert compressed-air connections 1 and 2
for braiding c u tt er s.

6

7

8

1
2

3
4
5

9

3.6 Table wideners (accessories)

Table widener for trouser seats

(order no. 0794 00 21 51 )

–

Attach table widener 1 with screws 2 and the strap located behind
the frame member 3.

–

Slightly loosen the screws on the upper side of the table.
Push table widener 1 to create a gap between it and the table plate.
This gap is n ee de d s o th at th e p oc k e t c a n p as s f r ee l y th rou gh
once it has been placed in position.

Table widener for jacket fronts

(order no. 0794 002101)

–

Attach table widener 4 to support table with screws 5.

1 2

3

4
5

10

3.7 Stacker (accessory)

The throw-over stacker (Order no. Z112 427514) is attached to the
frame of the sewing unit with holder pipe 1.

At delivery of th e s e wi n g u ni t th e h ol d er p ipe 1 is already p remounted
on the frame br ace 3.

If the throw-o ver s t ac ke r i s de li v er e d se parately packe d, th e h ol d er
pipe 1 must fi rs t b e a ttached to the fr am e b r ace 3 of the sewing un i t.

–

Mount guard pl a te 12 on th e housing 11 of the throw-over s t ac k e r
with screws, washers and spring washers.

–

Fasten holder pipe 1 on the frame brace 3 of the sewing unit with
screws, washers and brackets 6.

–

Fasten spar 4 on th e b r ac e 5 o f t he s ta c ker s t an d w i th s c rews,
washers and bracket 7.

–

Insert the ri bb ed pl u g 8 i n s p ar 4 .

–

Push the thr ow - ove r s ta c ker t ow ar d th e f r am e o f t he s ew i ng un i t s o
that spar 4 catc h es i n th e h ol d er p ipe 1.
The height of spar 4 is adapted to the holder pipe 1 via the slots in
brace 5 of the stacker stand.

–

Insert the c ou pl in g plug of the comp r ess e d a i r fe ed i nt o h os e
coupling 10.

–

Insert the c ou pl in g plug of the cont r ol le ad into hose cou pl in g 9.

–

Attach one en d o f the potential c a bl e 13 to th e s t op pe r pl a te 14 of
the throw-over s t ack e r wi t h t he en c l ose d w i ng nu t.
Attach the other end to the frame of the sewing unit with the
existing win g nut .
The potential cable 13 serves to conduct static charge s to ground.

–

After startin g t he s ew i ng un it with the throw-o ver stacker open, set
the clearance to the sewing unit.
The sewing pieces must secu r ely e nt er t he op en i ng be tween the
smoother and the stacked-goods support.

–

Tighten clam ping lever 2.

1 2 3 4 5

6 7 8

9

10

15
13

11

12

13

14

11

3.8 Suction devic e (acces sory)

The suction device (order no. 0722 004282) facilitates the exact
positioning of materials on the working tab l e.

Attention!

Do not reverse ho s es 2 an d 5 .
Hose 2 must always be connected to pipe socket 6.
The pneumatically-operated air valve is fitted to pipe socket 6.

–

Lay hose 2 from the settling container 7 to the vacuum-connection
socket 1 of the sewing-machine table.

–

Connect compre ss ed -ai r h os e 3 f r om cy l ind er 4 of th e a ir val v e to
the Y41 solenoid valve.

–

Connect hose 5 to pi p e s o ck et 8 o f se ttling containe r 7.
Connect other end of hose to on-site vacuum equipment or to the
centrifuga l bl o w e r.

Note:

If there is no on-site vacuum equipment a centrifugal blower must
also be ordered.

Attention!

It is essential for filter bag 9 to be fitted beneath hose 5.
Filter bag 9 pr o te c ts the vacuum gene rator from being penetrated by
dust and parti cl e s of di r t .

Hoses 2 and 5 mu s t t he r ef ore on no account be sw ap pe d.

1

2

2 3 4 5

6 7 8

5

9

12

4. Electrical connection

Attention!

All work on th e e l ec t ri c al e qu i pm en t o f t he s ewing machine m ust be
carried out by specialist electricians or other appropriately-trained
persons.
The mains plug mu s t b e r e mo v ed .

4.1 Connecting the DAC operating panel

The DAC operating panel 1 is mounted on the right-hand side of the
machine, see n f rom the operator’s viewpoi nt .

–

Fit operating panel 1 with clamps 4 and 6 to attachment bracket 5
and adjust angle.

–

Firmly tighten clamping screws on clamps 4 and 6.
Attach potent i al c a bl e 3 t o c lamp 4.
The function of the potential cable is to discharge static charges to
earth.

–

Slightly un do lock nut 7 on a tt ac h me nt br a ck et 5.

–

Rotate operating panel 1 until the operator has the best possible
view of the di s pl a y.

–

Firmly tighten lock nut 7.

–

Carefully insert plug 2 into the back of the operating panel.

–

Tighten screws of plug 2.

1

2 3 4 5 6

7

13

4.2 Checking rated voltage

The rated volt ag e s p ec i f i ed on th e i d en ti f i cation plate mus t c o i nci d e
with the mains voltage.

The sewing ma chi n e c a n b e a da pted to the local m ai n s vol t ag e b y
means of terminals 1 to 5 on the transformer (see sketch).

The wiring for connection to 3-phase mains supplies is shown in the
terminal conn ec t i on di a gr a m.
If several DC d ri v es a re c o nn ec t ed th es e s ho ul d be un i fo r mly
distributed o v er a l l ph as e s .

3 - 2 : 190V
3 - 1 : 200V
4 - 2 : 210V
4 - 1 : 220V
5 - 2 : 230V
5 - 1 : 240V

230V

5 4 3 2 1

14

4.3 Checking positioning

Before the machine is started the positioning set prior to delivery
should be checked.

Once the main sw it c h i s t ur n ed on th e se wi n g m ac h ine ad op ts t he
thread-lever-up position.

Caution - danger of injury

Turn off the main switc h.
Positioning should only be checked or adjusted with the main switch
turned off.

Checking positioning

–

Turn off the main switch.

–

Turn thread lever with handwheel to top dead centre position.
The thread lever must be just commencing its downward
movement.

–

In this position notch 2 on the positioning ring 1 must be in line
with notch 3 on the position indicator 5.

–

Adjust positioning if necessary.

Adjusting positioning

–

Undo clamping screws 4 on positioning ring 1.

–

Rotate positioning ring until notch 2 on it is in line with notch 3 on
position indi c a to r 5.

–

Firmly tighten clamping screws 4.

1 2 3

4 5

15

5. Pneumatic connection

The sewing machine must have a supply of water-free compressed air
to operate its pneumatic components.

Attention!

For the pneuma tic c o nt r ol p roc e s ses t o function proper l y t he
compressed- air s u pp l y mu s t b e c o nf i gu r ed as f ol lows:

Even when air c o ns u mp ti o n i s a t i t s peak the operati n g p res s u re must
not fall below

5 bar

.

If pressure fall-off is excessive:
–

increase compressor power

–

increase diameter of compressed-air lines.

Connecting compressed-air maintenance unit

–

Connect connection hose 1 (order no. 797 3031) to the
compressed-air supply with a R 1/4" hose connection.

Adjusting operating pressure

–

Operating pressure is

6 bar

.

It can be read off pr e ss ur e ga ug e 3 .

–

To adjust operating pressure lift and turn knob 2.
To increase pressure: turn clockwise
To decrease pressure: turn anti-clockwise

Attention!

No compressed ai r c o nt ai n i ng oi l m us t be ad mi t te d f r om th e a i r sup pl y.
Clean compressed air is taken from behind the filter to clean machine

components and material by air-blasting.
Any oil droplets in the compressed air cause malfunctions and leave
marks on the material.

2

3

1

16

6. Lubrication

NB

Before starti n g t he ma c hi n e i t s up pe r ass e mb l y mu s t b e supplied with
oil.

The oil-supply container must be filled only with

ESSO SP-NK 10

lubricating oil.
SP-NK 10 can be obtained from

DÜRKOPP ADL ER AG

sales outlets.

Oil-supply container 1 for upper-assembly lubrication

–

Fill oil-supply container 1 with oil through the holes in the sight
glass.
The oil level must be between the "Min." and "Max." marks.

Oil-supply container 3 for gripper lubrication

–

Move upper ass e mb l y of ma c hi n e t o o ne s i de .

–

Fill oil-supply container 3 with oil through nipple 2 up to the "Max."
mark.

1

2 3

2

3

17

7. Starting up

–

Turn on main switch .
Control is initialised.
The DÜRKOPP-ADLER logo briefly appears in the operating-panel
display.

–

The control unit checks whether the carriage is in its rearmost
position.
If not, "

<====REF

" (reference travel) appears in the display.

–

Depress left-h an d p ed al.
Reference tr a vel c o mm en c es .
The carriage moves to its rearmost position.
Reference travel is necessary to ensure that the carriage is always
in its defi ne d starting positi o n.

–

The display ch an ge s to th e s e wi n g-m ac h ine ma i n s cr e en .

–

By operating the appropriate pedals the vari ou s pl a cem ent stages
are activated i n s eq ue nce an d s e wi n g is co mm en c ed .
The individ ua l s ta ge s de pe nd on th e w or k i n g m et ho d a nd on th e
configurat ion of the machine .

Attention!

At the commencement of sewing the material must be beneath the
feeding clam ps.
Moving the ca rr i ag e w i th ou t m at er i a l da ma ge s th e co v er i n g o f t he
feeding clam ps.

–

For the choice of sewing program and further control-unit
adjustment see part 4 ("DAC 745-26/-28: brief description").

–

Placement an d o pe r at i on are de s c ri be d i n pa r t 1 ( "745-26/-28:
operating instructions").

<==== REF

18