Adler 69 Operating Instruction

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Preface and general safety instructions

Part 1: class 69 operating instructions

1. Product description

2. Designated use

3. Subclasses

3.1 Opt ional extras . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

4. Technical data

5. Operation

5.1 Folding down left-hand half of table plate (MG 56-2 frame only) . . . . 9

5.2 Threading the needle thread . . . . . . . . . . . . . . . . . . . . . . . . 10

5.2. 1 Subclass 69-373 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

5.2. 2 Subclass 69-FA-373 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

5.3 Adjusting t he n eedle-t hread tensi on . . . . . . . . . . . . . . . . . . . 13

5.4 Opening the nee dle-thread ten sioner . . . . . . . . . . . . . . . . . . . 13

5.5 Winding on the loop er thread . . . . . . . . . . . . . . . . . . . . . . . 15

5.6 Fitting the looper-th read bob bin . . . . . . . . . . . . . . . . . . . . . . 15

5.7 Adjusting the looper-thr ead t ension . . . . . . . . . . . . . . . . . . . . 17

5.8 Fitting and cha nging the needl e . . . . . . . . . . . . . . . . . . . . . . 17

5.9 Lifting the sew ing feet . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5.1 0 Loc king the sewing feet in the raised position . . . . . . . . . . . . . . 19

5.11 Adjusting the sewing-foot str oke . . . . . . . . . . . . . . . . . . . . . 19

5.12 Adjusti ng th e sewing-foot pressure . . . . . . . . . . . . . . . . . . . . 20

5.1 3 Adjusting t he stitch le ngth . . . . . . . . . . . . . . . . . . . . . . . . . 20

5.1 4 Welting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

5.1 5 Ribbon binder (class 69-373) . . . . . . . . . . . . . . . . . . . . . . . 22

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

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

6. Control unit and operating panel

6.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3

6.2 Efka VD5 54KV/6F82AV sewing drive . . . . . . . . . . . . . . . . . . . 24

6.2 .1 Control-b ox buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

6.2 .2 Altering parameter values . . . . . . . . . . . . . . . . . . . . . . . . . 26

6.3 Qui ck QD554/A51 K01 sewi ng drive . . . . . . . . . . . . . . . . . . . . 28

6.3 .1 Operat ing-panel b utt ons . . . . . . . . . . . . . . . . . . . . . . . . . . 28

6.3 .2 Altering parameter values . . . . . . . . . . . . . . . . . . . . . . . . . 30

Contents Page:

7. Sewing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

8. Maintenance

8.1 Cleaning and test ing . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

8.2 Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

9. Optional extra s

9.1 HP 11-1 pne umatic r apid str oke adjuster . . . . . . . . . . . . . . . . 38

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

1. Product description

The

DÜRKOPP ADLER 69

Double-lockstitch free-arm machine with underfeed, needle feed and alternating

•

foot overfeed.
Depending on the subclass, a single-needle machine wi t h or without thread clippe r

•

beneath the needle plate.
Slim free arm wi th large pass age space and large sewing-foot stroke.

•

Maximum passage space beneath raised sewing feet: 12 mm (with
sewing-foot-raising knee lever).

Small horizont al shuttle.

•

The sewing machine can be supplied with a closed, cut-out or fold-down left-hand

•

table-plate half. The fold-down version permits the unobstructed manipulation of
large items round the free arm.

Smooth, draw-f ree edging and precision sewing of i nner and outer arcs by an

•

integral follow binder mechanism.
Knee-operat ed pneumatic rapid stroke-a djustment mechanism to swit ch the foot

•

overfeed to maximum sewing-foot stroke (optional extra).

is an all-purpose special sewing machine.

2. Designated use

The 69 is a special sewing machine d esigned to be u sed to sew light to medium-h eavy
materials. As a rule such material consists of textile or synthetic fibres, but it also
includes leather.
These materials are used in the clothing, footwear and leatherwear industries, as well
as in domestic and automobile upholstery.

This special sewing machine can also be used t o execute so-c al l ed technical seams.
However, the operator must carry out an assessment of the possi ble dangers (with
which

DÜRKOPP ADLER AG

comparatively unusual and they are potentially of enormous diversity. Depending on the
outcome of this assessment it may be necessary to take special safety precautions.

Generally speaking material processed with this special sewing machine must be dry,
its thickness when compressed by the lowered sewing fee t must not exceed 7 mm and
it must contain no hard objects, since otherwise the operator of the machine would have
to wear protective goggles (which cannot at present be supplied).

The seam is generally executed with textile-fibre sewing threads up to 30/3 NeB (cotton
yarns), 40/3 Nm (synthetic yarns) or 30/3 Nm (covering yarns) in size. The use of any
other threads must also be subject to an assessment of the risks involved and the
taking of any necessary safety precautions.

The premises in which this special sewing machine is set up and operated must be dry
and well-maintained. If it i s t o be used in premises which are no t dry and
well-maintained, special precautions may be necessary: these must be the subject of
an agreement (see EN 60204-3-1:1990).

As manufactu rers of industrial sewing machines we work on the assumpt i on that
personnel working on our machines will be at least semi-skilled, so that they can be
presumed to be familiar with all normal operations and with the dangers inherent in
them.

would be hap p y to assist), as such applicat i ons are

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3. Subclasses

class 69-373

class 69-FA-373:

: single-needle double-lockstitch free-arm sewing machine with

underfeed, needle feed and alternating-f oot overfeed
as class 69-373, but with electromagneti c thread clipper beneath

the needle plate

3.1 Optional extras

order no. optional extra
FLP 14-2 ele ct ro-pneuma tic sewing-foot-raising mechanism

RAP 14-1 electro-pneumatic bar-tack and sewing-foot-raising mechanism

HP 11-1 Pneumatic rapid stroke-adjustment mechanism for the overfeed

WE-6 Maintenance unit

0797 003031 Pneumatic connection pack

9822 510001 Halogen lamp

0798 500088 Lamp transformer

0707 487519 Lamp-attachment set

pedal-operated.

pedal-operated.

knee-operated.

For pneumatic optional extras .

For the pneumat i c connection of frames with th e m aintenance uni t
and pneumatic optional extras.
Consisting of connecting hose (length 5 m, diameter 9 mm),
connectors, bands, coupler plug and socket.

WALDMANN, with 12V/20W bulb, attached to the upper part of the
machine.

For 230V, with mains connector, without switch,
for 9822 5101 25 and 9822 510001 lamps.

For 9822 510001 lamp.

4. T e chnical dat a

Lc noise-level
indicator:

6

workplace-related emission valuein accordance with
DIN 45635-48 -A-1-KL2

Lc = 81 dB (A)

class: 69-373, 69-FA-373
stitch length: 4 mm
sewing-foo t stroke: 3.2 mm
stitch rate: 1700 [min
material: double Skai 1.6 mm 900 g/m

-1

]

2

DIN 53352

Needle system: 134

Needle thickne ss (depending on E no.) [Nm] 110 - 130

Maximum sewing-thread thicknesses:

- cotton [NeB] 30/3

- synthetic endless [Nm] 40/3

- covering yarn [Nm] 30/3

stitch rate:

- maximum [min

- ex works [min

-1

]2000

-1

]1700

maximum stitch length:

- forwards [mm] 5

- backwards [mm] 5

maximum sewing-foot stroke: [mm] 7

maximum passage space beneath raised sewing feet:

- sewing foot raised by lifting lever [mm] 7

- sewing foot raised by knee lever [mm] 12

operating pre ssure: [bar] 6

rated voltage: 3 x 220-240 V, 50/60 Hz

3 x 380-415 V, 50/60 Hz

dimensions:

- MG 53-3 frame (H x W x D) [mm] 1540 x 1060 x 550

- MG 56-2 frame (H x W x D) [mm] 1560 x 1200 x 600

working height: ...

- MG 53-3 frame [mm] 760 - 850

- MG 56-2 frame [mm] 780

weight (upper part only): ca. [kg] 33

7

3

1 2 3 4

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5. Operation

5.1 Folding down left-hand half of tab le plate (MG 56-2 f rame only)

When the special sewing machine is fitted with the
consists of two parts. The left-hand half 3 can be folded down to permit the
unobstructed manipulation o f large items ro und the free arm.

MG 56-2

frame the table plate

5

3

7

6

8

Folding down the left-hand half of the table plate

–

Turn fasteners 7 and 8 beneath the table plate anticlockwise to unlock the
left-hand half 3 of the table plate.

–

Fold the left- hand half 3 of the table plate down and to the l eft.

–

Hook shackle 1 onto the pin 2 of the left- hand frame upright.

Folding the left-hand half of the table plate back into place

–

Unhook shackle 1 from pin 2.

–

Lift the left-hand half 3 of the table plate, swivel it to the right and lower it onto
support plates 5 and 6.
The pins 4 in the right-hand half of the table plate must fi t i nto the holes i n the
left-hand half 3.

–

Turn fasteners 7 and 8 beneath the table plate clockwise to lock the left-hand
half 3 of the t able plate.

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5.2 Threading the needle thread

5.2.1 Subclass 69-373

Caution: danger of injury

Turn off the main switch
The needle thread may only be threaded with the sewing
machine turned off.

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5.2.2 Subclass 69-F A-373

Caution: danger of injury

Turn off the main switch
The needle thread may only b e t hreaded with the sewing
machine turn ed off.

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1

2
3

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Fig. a: correct thread loop in the centre

Fig. b: needle-thread tension too weak or

Fig. c: needle-thread tension too strong

of the material

looper-thre ad tension too s t rong

looper-thread tension too weak

or

5.3 Adjusting the needle-thread tension

Pre-tensioning mechanism (subclass 69-FA-373)

On subclass
thread cutter to function reliably when the main tensioner 2 is open.
This residual tension is created by the pre-tensioning mechanism 1.
The pre-tensioning mechanism 1 also determines the length of the needle-thread end
after the thread has been clipped.

The pre-tension 1 should be set lower than the main tension 2.

–

Adjust pre-ten si oning mechani sm 1 by turning th e knurled nut.

–

After major changes to prel i minary tensi on 1 the main tension 2 should also be
adjusted accordingly.

Main tension

The main tension 2 should be set as low as possible.
The looping of the threads must be in the centre of the material (see fig. a).
With thin material excessive th read tension can cause unwanted gathering and thread
breakage.

–

Adjust the main tensioner 2 so that the stitches are uniform.

69-FA-373

the needle thread needs to be under residual tension for the

5.4 Opening the needle-thread tensioner

Automatic

The main tensioner 2 is opened automatically:

–

when the thread is severed (subclass

–

when the foo t is raised (pedal 1 position backwards)

69-FA-373

).

Manual

The main tensioner 2 is opened manually:

–

when the rele ase lever 3 is pr essed towards the arm.
The main tension er 2 remains open f or as long as pressur e is maintained on the
release lever 3.

–

when the sewing feet are raised mechanically with the knee lever (see chapter 5.9).

–

when the sewing feet are locked in the raised position (see chapter 5.10).

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