Adler N291 Operating Instruction

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Foreword and general safety instructions

Part 1: Operation manual Cl. N291

1. Product specifications

1.1 Use for t he intended purpose . . . . . . . . . . . . . . . . . . . . . . . . 5

1.2 Technical da ta . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2. Elements and their function

2.1 Element s at the machine he ad . . . . . . . . . . . . . . . . . . . . . . . . 6

2.2 Element s at the machine stand . . . . . . . . . . . . . . . . . . . . . . . 10

3. Operation of the sewing machine

3.1 Threading the needle thr ead . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.2 Winding the b obbin thread . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.3 Changing the bobbin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.4 Setting the bobb in thread tension . . . . . . . . . . . . . . . . . . . . . . 12

4. Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Contents: Page:

Part 2: Installation manual Cl. N291

1. General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2. Assembling the machine stand . . . . . . . . . . . . . . . . . . . . . 6

3. Completing and screwing on the table top . . . . . . . . . . . . . . . 6

4. Connecting the sewing machine motor to the table top . . . . . . . 6

5. Mounting the machine head, positioning the V-belt and

fastening the pedal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

6. Fastening the handwheel and synchronizer . . . . . . . . . . . . . . 8

7. Connecting the maintenance unit . . . . . . . . . . . . . . . . . . . . 8

8. Laying and connecting the electrical cables . . . . . . . . . . . . . . 8

9. Filling in the oil and readying the machine for service . . . . . . . . 8

10. Making a sewing test and checking the oil supply of the

mist lubricator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

The following patents and registered designs apply:

Status September 1992
DE 84 33 111

DE 26 16 738
DE 28 03 971
DE 28 15 297
DE 30 43 141
DE 32 15 408

ES 428 674
ES 458 540
ES 477 288

GB 1 530 873
IT 209 23 8

IT 1 017 437
IT 1 077 155
IT 1 077 924
IT 1 109 783
IT 1 140 081
IT 1 160 800
IT 1 194 222

JP 61-61041
JP 1 803 181
JP 1 174 491
JP 1 250 838
JP 1 256 078
JP 1 258 920
JP 1 339 944

KR 24 686
SU 664 575
TW 19 105

TW 31 498
TW 33 691
TW 20 190
TW 23 626

US 4 116 145
US 4 137 858
US 4 364 319
US 4 446 803
US 4 457 244
US 4 534 304
US 4 646 668

1. Product specifications

1.1 Use for the intended purpose

The sewing unit must only be used for sewing t extile fibres and leather.

1.2 T echnical data

Needle system:

depending on sewing equipmen t: 2134-35 DUKK

Maximum number of stitches:

depending on sewing foot stroke
and stitch le ngth: 2000, 3000, 4000 1/min

Maximum stitch length
forward (v), reverse (r)

N291-164 062: 6 (v); 6 (r) mm
N291 185 082: 10 (v), 8 (r) mm

Maximum sewing foot stroke: 7 mm

134 KK

Operating pressure: 6

Line pressure: 7-10 bar

Air consumpti on per work cycle: 0.15 NL

Maximum clearance under the
sewing feet :

When sewing: 10 mm
When feet are l i f ted in needle
up position: 17 mm

Maximum bobbin capacity:

with a thread size of Nm 80/2: 95 m

Maximum thread size:

Cotton: 11/3 NeB
Synth. continuous: 11/3 Nm
Corespun th read (poly- cott on): 11/4 Nm

+

/-0.5 bar

5

2. Elements and their function

2.1 Elements at the machine head

Element function

Screw 1

Thread guide 2 – Depending on the material thickness, sewing thread

Turning knob 3 – Setting the add i tional tension engageable wit h l ever

Lever 4 – Op ening the needle t hread main tension and needle

Lever 5 – Activating and deactivating the additional tension.

Dial 6

Dial 7
Sight glass 8 wi th

inlet opening

Turning knob 9 – Setting the reverse stitch length.
Turning knob 10 – Setting the forward stitch len g t h.
Hand lever 11 – C hanging the stitch length inf initely betwee n the

Turning knob 12 – Setting the nee dl e thread main t ension at the

Lever 13 – Determining whether the needle thread main tension

Needle 14

Locking button 15 – Locking the sewing foot in its lifted position.

– This screw for the sewing foot pressure is turned in

completely at the factory.
Therefore, do not change its adjustment!

and stitch length, the position of the thread guide
must be adjus t ed such that co nt rolled guiding of the
needle thread around the hook i s assured.
When it is set at "0" the large st amount of thre ad is
released, as is required for very long stitches and
very thick material.

5 at the desired value.

thread additional tension.

To do this, unlock the lever by pulling it to the right,
and then chan ge over.

– Set the "higher" foot stroke that has been activated

with the corresponding key or knee switch.
– Set the "smaller" foot stroke.
– Indicating the oil level in the reservoir. The oil level

must not drop below "MIN". If necessary, fill the oil

ESSO "SP NK 10" into the oil reservoir up to the

mark "MAX".

adjusted for ward and reverse stitch length.

desired va l u e.

is opened or closed while the foot is lifted.

Lever up: Tension opened

Lever down: Tension closed
– When changing the needle, always turn off

the main switch.

Otherwise there is danger of injury!

6