Duerkopp Adler 271 Bedienungsanleitung

Contents Page:

Preface and General Safety Notes

Part 1: Operating Instructions Cl. 271 to 274

1. Product Description

1.1 Short Description and Proper Use . . . . . . . . . . . . . . . . . . . . . 5

1.2 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.3 Optional Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2. Machine Elements and their Functions

2.1 Elements on the Machine Head . . . . . . . . . . . . . . . . . . . . . . . 8

2.2 Elements on the Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3. Operating

3.1 Needles, Threads and Thread Tension . . . . . . . . . . . . . . . . . . . 14

3.2 Spooling the Bobbin Thread . . . . . . . . . . . . . . . . . . . . . . . . . 14

3.3 Replacing the Bobbin and Setting the Looper Thread Tension . . . . . . 15

3.4 Threading the Needle Thread . . . . . . . . . . . . . . . . . . . . . . . . 16

3.5 Regulating the Needle Thread Tension . . . . . . . . . . . . . . . . . . . 17

3.6 Thread Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

4. Maintenance

4.1 Cleaning and Checking . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4.2 Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Following Patents and Registered Utility Models apply:

Status March 1994

DE - 41 15 520 DE - 87 05 550

DE - 41 05 563 JP - 1 933 346

JP - HEI - 4 - 32044 DE - 41 38 402

DE - 40 04 892 JP - HEI - 4 - 312432

1. Product Description

1.1 Short Description and Proper Use

The 271 to 274 are flat single needle-double saddle stitch

sewing machines with thread trimming devices for

straight seams to stitch type 301.

Properly employed the machine may only be used for

sewing materials of textile fibre and garment leather.

271 with skipping bottom feed.

The machine has an automatic central oil wick lubrication

with oil reservoir as well as a seperate automatic hook

lubrication, also with oil reservoir. The oil levels are

visible through inspection glasses.

Through equipping with thread regulators the same

sub-classes, with appropriate choice of sewing device

and needle, can be used for sewing thick as well as thin

material.

The operation of the tension activation, the thread

trimming, the automatic bartack and the pressure foot lift

occur electro-magnetically. No compressed air is required

with the exception of classes 273, 274 and 272-740142.

For further technical characteristics and equipment for

each sub-class see under 1.2 Technical Data.

272 as 271, but with additional needle transport.

273 as 271, but with additional intermittent roller top feed.

The transport distance of the roller top feed is a max.

7mm. With an adjustment wheel at the front of the

machine arm it can be given a setting differing from the

bottom feed.

It has stable rpm up to a maximum number of stitches of

5500 stitches/min. This means constant stitch lengths as

well as smooth and unshifted seams even with quick rpm

changes.

Automatic lifting of the carrier roller by change over to

transport to the rear(bartack).

274 as 273, but with additional needle transport.

1.2 Technische Data

Sub-classes Stitches/min 1 2 3 4 5 6 7

max. from

factory

271-140041 5500 4800 4mm x

271-140042 5500 4800 4mm x x x

271-240042 5500 4800 4mm x x x x

272-140041 5000 4800 4mm x

272-140042 5000 4800 4mm x x x

272-160062* 5000 4000 6mm x x x

272-640141 5000 4800 4mm x x

272-640142 5000 4800 4mm x x x x

272-740142 5000 4800 4mm x x x x

273-140042 5500 4800 4mm x x x

274-140042 5000 4800 4mm x x x

* Extra-large shuttle = 70% greater capacity of the underthread spool than with the

standard hook

To 1: Max. stitch length for each sub-class

To 2: Thread trimming for needle and bobbin thread

To 3: Electro-magnetic automatic bartack. It is switched via the pedal and executes

the following functions: lowering the pressure foot, seam beginning and seam

end bartack, needle and bobbin thread trimming, raising the pressure foot.

To 4: Keys on the arm head:

- Needle high - low

- Bartack on - Bartack function switched off at the control panel

- Bartack suppressed - Bartack function switched on at the control panel

- Bartack within the seam

To 5: Edge cutter right, next to the needle. Switched on and off with the hHand lever

or, as optional equipment, electro-pneumatically via key. Depending on the

sewing unit (E-no.), the cutting interval is 3.5 ; 5.0 ; 8.0 or 10mm. Special

sewing devices are required for graduated cutting. The knife stroke is 5.5mm.

To 6: Edge cutter, but with seperate electric drive. Two cutting rpms can be switched

in.

To 7: Edge cutter, which cuts into the material edge crosswise during sewing, e.g. for

tension-free turning over of round neck openings, collars, arm holes, etc. The

cut occurs after every 6 stitches. On request after 4 stitches. The cut depth has

a max. of 15mm. It is adjustable up to about 1mm to the seam.

Needle system: 134, 797 or Sy 1955-01

clearance under the pressure foot

When raised: 8.0mm by 271 and 273

9.5mm by 272 and 274

When sewing: 8.0mm

Operating pressure: 6 bar

Air consumption: 0.02 Nl per work cycle by 273 and 274

0.1 Nl per work cycle by 272-740142

Noise Level Lc: Work station specific emmission value to DIN

45635-48-A-1-KL2 by stitch length 3.2mm

271-140041 and 140042 with stitches 4800/min. = 80

dB(A)

272-140041 and 140042 with stitches 4800/min. =

82dB(A)

272-140041 and 140042 with stitches 4500/min. =

80dB(A)

1.3 Optional Equipment

App. 301 Covering hood for the machine head

Z 120 1801 Electro-magnetic thread wiper for 271 and 272

sub-classes -140000 and -160000

Z 120 1851 Electro-magnetic thread wiper for 273 and 274

Z 133 371 Reflected light barrier for automatic sewing stop at

the material end with follow-up functions. For motors

with external control panel V730 or DB5.

Z 116 6741 Electro-pneumatic device for alternating sewing with

two differently set stitch lengths and two differently

set needle thread tensions. Normal seam and seam

with thread drawing (basting stitches). Partial

strengthened tension (Seam thickening) and

ornamental seams.

Z 124 401 Electro-pneumatic operation for on/off switching of

the edge cutters via key for 272-640142.

Z 145 1 Graduated edge cutting (finger version for lightest

materials). In conjunction with the sewing unit 272/E

111 for widths of cut of 4.5 and 7mm.

Z 145-101 Graduated edge cutting (2 knife version for medium

heavy material). In conjunction with sewing unit

272/E 112 for widths of cut of 3.5 and 6,5mm.

722 2041 Container for cutting waste for connection to the

in-house vacuum system. If this is not available then

the appropriate centrifugal blower is to be used.

999 260029 for 3-phase current 380-400V+N, 50Hz

999 260030 for 3-phase current 220-230V, 60Hz

999 260031 for 3-phase current 415-440V, 50Hz

933 5736 Toothed steel roller, 9mm wide for 273 and 274 roller

transport

273 1041 u. 274 1141 Height setting for the pressure foot with hard to

transport material, e.g. velvet.

570 1833 Filter regulator for the compressed air connection

271 661 Parts set, knee lever for pressure foot lift by

machines with automatic bartacker.

271 1671 Parts set, hand lever for seam bartacking for

machines with automatic bartacker.

2. Machine Elements and their Functions

2.1 Elements on the Machine Head

Element Function

1Screw – Regulating of the pressure foot pressure. The

Setting of the screw is to be fixed.

2Hand lever – Turning the edge cutter 10 on and off. The position

of the hand lever is variablly adjustable.

3Spooling device – See under Section 3.2 Spooling of the Bobbin

Thread.

4Control panel – See the motor manufacturer’s instructions.

5Oil reservoir – The oil level should not be allowed to drop below

"MIN". When necessary fill with ESSO SP-NK10 oil

to "MAX".

6Adjustment wheel – Setting the stitch length for reverse sewing (with

sub-classes -....41 via hand lever).

7Adjustment wheel – Setting the stitch length for forwardsewing (with

sub-classes -....41 via hand lever).

8Rest – For tilting the machine head to the back (not on

classes 273 and 274).

9Needle thread tension – Turn in direction + = higher needle thread tension

Turn in direction - = looser needle thread tension

10Edge cutter – Function see following page.

11Needle – System 134, 797 or Sy 1955-01

- Risk of Injury! -

Before replacing the needle it is essential to turn the main

switch off.

12Locking button – Lock the pressure foot in the raised position

13Hand lever – Setting the carrier roller up. It is swung out of the

work area. Sewing only with bottom feed

14Adjustment wheel – Transport length for the top feed roller

15Roller top feed – Function see following page

101112 9 8 7 5 4

12 3

272-640142

13 14 274-140042

Element Function

16Separate drive

for edge cutter – Two cutting rpms switchable (only 272-740142)

- Risk of Injury! -

Caution in the area of the edge cutter.

17LED – The blinking of the diode shows that the edge cutter

is operationally ready. To switch on and off the

following variants are available:

* Manual via key

* Via the sewing pedal through the run signal of the

sewing drive

* Automatic "On" or "Off" after a selected number of

stitches

* Automatic "Off" after thread trimming (See

Installation Instructions Section 13.)

18Switch for

edge cutting – I = Normal rpm

D = Drive "Off". Knife outside the sewing area

II = Increased rpm for greater stitch lengths and thick

materials

19LED – Indicator for main switch "On" (only 272-740142)

20Key – Beginning or end bartack on - Bartack off at the

control panel

Beginning or end bartack off - Bartack on at the

control panel

21Key – Single stitches

22Key – With sewing machine at rest: Needle up-down.

With sewing operation: Bartack (reverse sewing) at

desired position in the seam

23Key – Switching the edge cutter on and off. By sub-class

272-640000 the pneumatic operation Z124-401

(optional equipment) must have been installed.

Otherwise the key has no function.

24Key – Raise and lower the top feed roller manually.

Automatic lowering after a number of stitches see

Installation Instructions Section 12.

25Knee lever

(only sub-classes -....41) – Before tilting the machine head to the back turn the

main switch off and remove the knee lever. To slip it

out conduct movements 1 and 2 and to hang it back

in movements 3 and 4.

26Hook lubrication – The oil reservoir for the hook lubrication should not

drop below the "Min" mark.

By normal operation the oil level should be checked

weekly. Through the fill opening fill Esso SP-NK 10

oil up to the "Max" mark.

The oil flow for the hook lubrication can be regulated

at screw 5.

16 1918

272-740142

526

OIL SP-NK 10

2.2. Elements on the Frame

Elements Function

1Main Switch – Turn the sewing drive on and off.

The sewing machine head is operational.

Attention!

For threading, replacement of sewing tools (such as

needle, pressure foot, needle plate, material feed etc.),

cleaning, when leaving the work place as well as during

maintenance work it is essential to turn the main switch

off.

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