Pfaff 3574-2/02 User manual

296-12-17 977
Betriebsanleitung engl. 11.96
3574-2/02
Instruction Manual

The reprinting, copying or translation of PFAFF Instruction Manuals, whether in whole or in
part, is only permitted with our previous authorization and with written reference to the
source.
G.M. PFAFF
Aktiengesellschaft
Postfach 3020
D-67653 Kaiserslautern
Königstr. 154
D-67655 Kaiserslautern
Editing / Illustrations
HAAS-Publikationen GmbH
D-53840 Troisdorf

Indice
Contents ...............................................................................Chapter - Page
1Safety ........................................................................................................................ 1 -1
1.01 Directives...................................................................................................................1- 1
1.02 General notes on safety............................................................................................. 1 - 1
1.03 Safety symbols .......................................................................................................... 1 - 2
1.04 Important points for the user ..................................................................................... 1 - 2
1.05 Operating and specialist personnel ............................................................................ 1 - 3
1.05.01 Operating personnel .................................................................................................. 1 - 3
1.05.02 Specialist personnel ................................................................................................... 1 - 3
1.06 Danger .......................................................................................................................1- 4
2Proper use ................................................................................................................ 2 - 1
3Specifications ........................................................................................................... 3 - 1
4Disposal of the machine .......................................................................................... 4 - 1
5Transport packaging and storage ........................................................................... 5 - 1
5.01 Transport to the customer’s premises....................................................................... 5 - 1
5.02 Transport within the customer’s premises ................................................................ 5 - 1
5.03 Disposal of the packaging .......................................................................................... 5 - 1
5.04 Storage ......................................................................................................................5- 1
6Explanation of the symbols..................................................................................... 6 - 1
7Controls .................................................................................................................... 7 - 1
7.01 On/off switch ............................................................................................................. 7 - 1
7.02 Foot switch ................................................................................................................ 7 -1
7.03 Control panel.............................................................................................................. 7 -2
7.03.01 Display ....................................................................................................................... 7 - 2
7.03.02 Control panel operation modes .................................................................................. 7 - 3
7.03.03 Functions in the SEWING mode ................................................................................ 7 - 3
7.03.04 Functions in the INPUT mode .................................................................................... 7 - 4
8Mounting and commissioning the machine .......................................................... 8 - 1
8.01 Mounting ................................................................................................................... 8 -1
8.01.01 Aligning the machine ................................................................................................. 8 - 1
8.01.02 Connecting the foot switch........................................................................................ 8 - 2
8.01.03 Connecting disk drive and/or programming panel ...................................................... 8 - 2
8.01.04 Mounting the reel stand............................................................................................. 8 - 3
8.02 Commissioning the machine...................................................................................... 8 - 3
8.03 Turning the machine on/off........................................................................................ 8 - 3
8.04 Checking/setting zero point ....................................................................................... 8 - 4
9Preparation ............................................................................................................... 9 - 1
9.01 Inserting the needle ................................................................................................... 9 - 1
9.02 Winding the bobbin thread, adjusting the bobbin thread tension............................... 9 - 2
9.03 Inserting/removing the bobbin case........................................................................... 9 - 3
9.04 Threading the bobbin case / Adjusting the bobbin thread tension ............................. 9 - 3
9.05 Threading the needle thread / Adjusting the needle thread tension........................... 9 - 4

Indice
Contents ...............................................................................Chapter - Page
9.06 Selecting the program number .................................................................................. 9 - 5
9.07 Inserting sewing jig.................................................................................................... 9 - 6
10 Sewing .................................................................................................................... 10 - 1
11 Programming ......................................................................................................... 11 - 1
11.01 Summary of the functions in INPUT mode .............................................................. 11 - 1
11.01.01 Direct functions........................................................................................................ 11- 1
11.01.02 Menu functions........................................................................................................ 11 - 1
11.01.03 Summary of the menu functions ............................................................................. 11 - 2
11.02 Examples for selecting functions ............................................................................. 11 - 3
11.02.01 Selecting a direct function ....................................................................................... 11 - 3
11.02.02 Selecting a menu function ....................................................................................... 11 - 3
11.03 Explanation of the menu functions .......................................................................... 11 - 4
11.04 Programming panel.................................................................................................. 11 - 9
11.04.01 Operation modes of the programming panel ........................................................... 11 - 9
11.04.02 Direct functions........................................................................................................ 11-10
11.04.03 Dialog keys .............................................................................................................. 11 - 10
11.04.04 Functions for block and pattern manipulation .......................................................... 11 - 11
11.04.05 Functions in INSERT mode ...................................................................................... 11 -11
11.04.06 Seam pattern programming ..................................................................................... 11 -13
11.04.07 Correcting sewing program ..................................................................................... 11 -20
12 Care and maintenance........................................................................................... 12 - 1
12.01 Cleaning the machine .............................................................................................. 12 - 1
12.02 Filling the oil reservoir .............................................................................................. 12 - 2
12.03 Cleaning the blower air filter .................................................................................... 12 - 2
12.04 Checking/adjusting air compression......................................................................... 12 - 3
12.05 Cleaning the air filter of the air filter / lubricator ....................................................... 12 - 3
12.06 Emptying the water trap .......................................................................................... 12 - 4
13 Adjustment ............................................................................................................. 13 - 1
13.01 Notes on adjustment ............................................................................................... 13 - 1
13.02 Tools, gauges and other accessories ....................................................................... 13 - 1
13.03 Abbreviations ........................................................................................................... 13 - 1
13.04 Pulling out/inserting the sewing head ...................................................................... 13 - 2
13.05 Checking and adjustment aids ................................................................................. 13 - 3
13.06 Adjustment of the sewing head ............................................................................ 13 - 4
13.06.01 Adjusting the synchronizer....................................................................................... 13 - 4
13.06.02 Preadjusting needle height ...................................................................................... 13 - 5
13.06.03 Counter presser lifting stroke .................................................................................. 13 - 6
13.06.04 Needle in the needle hole center ............................................................................. 13 - 7
13.06.05 Hook shaft bearing and hook-to-needle clearance ................................................... 13 - 8
13.06.06 Needle rise, needle height and bobbin case position stop....................................... 13 - 9
13.06.07 Bobbin opener height............................................................................................... 13 -10
13.06.08 Bobbin opener position ............................................................................................ 13 - 11
13.06.09 Bobbin opener movement ....................................................................................... 13 -12

Indice
Contents ...............................................................................Chapter - Page
13.06.10 Thread check spring and slack thread regulator....................................................... 13 -13
13.06.11 Thread puller ............................................................................................................ 13 -14
13.06.12 Bobbin winder.......................................................................................................... 13 -15
13.06.13 Presser foot lifting movement ................................................................................. 13 - 16
13.06.14 Presser foot depression time................................................................................... 13 - 17
13.06.15 Adjusting the presser bar......................................................................................... 13 -18
13.06.16 Bottom point of reversal of the presser foot and lift................................................ 13 -19
13.06.17 Adjusting the presser foot to fabric thickness ......................................................... 13 - 20
13.07 Thread trimmer adjustment .................................................................................. 13 -21
13.07.01 Dismantling/assembling the control unit.................................................................. 13 -21
13.07.02 Preadjusting the control cam ................................................................................... 13 - 22
13.07.03 Roller lever............................................................................................................... 13 -23
13.07.04 Latch ........................................................................................................................ 13 -24
13.07.05 Engaging solenoid.................................................................................................... 13 -25
13.07.06 Actuating lever ......................................................................................................... 13-26
13.07.07 Engaging lever ......................................................................................................... 13 -27
13.07.08 Lateral alignment of the thread catcher ................................................................... 13 -28
13.07.09 Front point of reversal of the thread catcher............................................................ 13 -29
13.07.10 Readjusting the control cam .................................................................................... 13 - 30
13.07.11 Catch spring............................................................................................................. 13 - 31
13.07.12 Distance of knife to needle ...................................................................................... 13 -32
13.07.13 Manual cutting function test .................................................................................... 13 -33
13.07.14 Needle thread tension release ................................................................................. 13 -34

Safety
1 - 1
1 Safety
1.01 Directives
This machine is constructed in accordance with the European regulations contained in the
conformity and manufacturer’s declarations.
In addition to this Instruction Manual, also observe all generally accepted, statutory and
other regulations and legal requirements - also those of the country in which the machine
will be operated - and all valid environmental protection regulations!
The regionally valid regulations of the social insurance society for occupational accidents or
other supervisory organizations are to be strictly adhered to!
1.02 General notes on safety
●This machine may only be operated by adequately trained operators and only after having
completely read and understood the Instruction Manual!
●All Notes on Safety and Instruction Manuals of the motor manufacturer are to be read
before operating the machine!
●The danger and safety instructions on the machine itself are to be followed!
●This machine may only be used for the purpose for which it is intended and may not be
operated without its safety devices. All safety regulations relevant to its operation are to
be adhered to.
●When exchanging sewing tools (e.g. needle, presser foot and bobbin), when threading
the machine, when leaving the machine unattended and during maintenance work, the
machine is to be separated from the power supply by switching off the On/Off switch or
by removing the plug from the mains!
●Everyday maintenance work is only to be carried out by appropriately trained personnel!
●Repairs and special maintenance work may only be carried out by qualified service staff
or appropriately trained personnel!
●Work on electrical equipment may only be carried out by appropriately trained personnel!
●Work is not permitted on parts and equipment which are connected to the power supply!
Exceptions to this are only to be found in the regulations EN 50110.
●Modifications and alterations to the machine may only be carried out under observance
of all the relevant safety regulations!

1 - 2
Safety
●Only spare parts which have been approved by us are to be used for repairs!
We expressly point out that any replacement parts or accessories which are not supplied
by us have not been tested and approved by us.
The installation and/or use of any such products can lead to negative changes in the
structural characteristics of the machine.
We shall not be liable for any damage which may be caused by non-original parts.
1.03 Safety symbols
Danger!
Points to be observed.
Danger of injury for operating and specialist personnel!
1.04 Important points for the user
●This Instruction Manual is a component part of the machine and must be available to the
operating personnel at all times.
The Instruction Manual must be read before operating the machine for the first time.
●The operating and specialist personnel is to be instructed as to the safety equipment of
the machine and regarding safe work methods.
●It is the duty of the user to only operate the machine in perfect running order.
●It is the obligation of the user to ensure that none of the safety mechanisms are
removed or deactivated.
●It is the obligation of the user to ensure that only authorized persons operate and work
on the machine.
Further information can be obtained from your PFAFF dealer.

Safety
1 - 3
1.05 Operating and specialist personnel
1.05.01 Operating personnel
Operating personnel are persons responsible for the equipping, operating and cleaning of
the machine as well as taking care of faults arising in the sewing area.
The operating personnel is obliged to observe the following points and must:
●always observe the Notes on Safety in the Instruction Manual!
●never use any working methods which could limit the level of safety in using the
machine!
●not wear loose-fitting clothing or jewelery such as chains or rings!
●also ensure that only authorized persons have access to the potentially dangerous area
around the machine!
●also ensure that only authorized persons have access to the potentially dangerous area
around the machine!
1.05.02 Specialist personnel
Specialist personnel are persons with a specialist education in the fields of electrics,
electronics and mechanics. They are responsible for the lubrication, maintenance, repair and
adjustment of the machine.
The specialist personnel is obligated to observe the following points and must:
●always observe the Notes on Safety in the Instruction Manual!
●switch off the On/Off switch before carrying out adjustments or repairs, and ensure that
it cannot be switched on again unintentionally!
●never work on parts which are still connected to the power supply! Exceptions are
explained in the regulations EN 50110.
●replace the protective coverings and close the electrical control box after all repairs or
maintenance work!

1 - 4
Safety
1.06 Danger
A working area of 1 meter is to be kept free both in front of and behind the
machine while it is in operation so that it is always easily accessible.
Never reach into the sewing area while sewing!
Danger of injury by the needle!
Never leave objects on the table while adjusting the machine settings!
Objects can become trapped or be slung away!
Danger of injury!
Only operate the machine when the cover 1is closed!
Danger of injury due to the action of the jig control!
Do not operate the machine without the take-up-lever guard 2!
Danger of injury due to the motion of the take-up lever!
Do not operate the machine without the eye guard 3!
The eye guard 3protects the operator from flying particles of material.
Do not operate the machine without the belt guard 4!
Danger of injury due to the rotating V-belt!
1
3
2
4
Fig. 01 - 01

Proper use
2 Proper use
2 - 1
The PFAFF 3574-2/02 is used for the industrial manufacture of freely programmable
lockstitch seams within a seam type area of 180 x 220 mm, e.g. for decorative patterns,
emblems, ornaments, decorative and assembly seams, bartack seams as well as assembly
and closing seams on three-dimensional workpieces.
Any and all uses of this machine which have not been approved of by the
manufacturer are considered to be inappropriate! The manufacturer cannot be
held liable for any damage caused by the inappropriate use of the machine! The
appropriate use of the machine means that all operational, adjustment,
maintenance and repair measures required by the manufacturer are to be
observed!
Fig. 2 - 01

Specifications
3 Specifications ▲
Sewing head: ............................................................................................483 with -900/51
Sewing speed: .......................................................................................... max. 2600 spm-1
Stitch length:..................................................................................................... max. 6 mm
Stitch type:.................................................................................................. 301 (lockstitch)
Needle system:........................................................................................................ 134-35
Needle size: .....................................................................................................80 - 120 Nm
Clearance under presser foot:.................................................................................. 10 mm
Sewable material thickness: ............................................................................. max. 5 mm
Sewing area size: ......................................................................................... 180 x 220 mm
Seam depth: ................................................................................................... min. 0.8 mm
Dimensions of the machine:
Length:...............................................................................................................~1300 mm
Width: ..................................................................................................................~800 mm
Height (without reel stand): ...............................................................................~1280 mm
Sewing motor: ............................................................................ brushless DC servomotor
Motor speed: .............................................................................................max. 4500 rpm-1
Connection voltage: .................................................................................... 220 V 50/60 Hz
Power requirement: .................................................................................................850 VA
Fuse protection: ............................................................................ 1 x 16 A, delayed action
Working air pressure:.......................................................................................... min. 6 bar
Air consumption:................................................................................. approx. 15 l / cycle ◆
Working noise level:
Emission at workplace at n = 2000 spm-1: ................................................... LpA < 83 dB(A)
(noise measurement according to DIN 45 635-48-2-KL 2)
Net weight: ..................................................................................................approx. 297 kg
Gross weight: ..............................................................................................approx. 322 kg
▲Subject to alternation
◆Varies according to program length
3 - 1

Disposal of the machine
4 Disposal of the machine
●The proper disposal of the machine is the responsibility of the customer.
●The materials used are steel, aluminium, brass and various plastics.
The electrical equipment consists of plastics and copper.
●The machine must be disposed of in accordance with applicable local environmental
protection regulations. If necessary, a specialist is to be commissioned.
Special care is to be taken that parts soiled by lubricants are separately
disposed of in accordance with the applicable local environmental protection
regulations!
4 - 1

Transport, packaging and storage
5 Transport, packaging and storage
5.01 Transport to the customer’s premises
Within Germany, the machine is delivered without packaging.
Machines for export are packaged.
5.02 Transport within the customer’s premises
The manufacturer bears no liability for transport within the customer’s premises or to the
individual locations of use.
Always ensure that the machine is only transported upright.
5.03 Disposal of the packaging
The packaging of these machines consists of paper, cardboard and VCE fiber.
The proper disposal of the packaging is the responsibility of the customer.
5.04 Storage
The machine can be stored for up to 6 months if not in use. During this time it should be
protected from dust and moisture.
For longer storage the individual parts of the machine, especially the moving parts, should
be protected agains corrosion, e.g. by a film of oil.
5 - 1

Explanation of the symbols
6 Explanation of the symbols
In this Instruction Manual, tasks to be carried out and important information are drawn to
your attention by symbols. The symbols have the following meanings:
Note, information
Cleaning,care
Lubrication
Servicing, repairing, adjustment, maintenance
(only to be carried out by specialist personnel)
6 - 1

Controls
7 - 1
Fig. 7 - 01
7 Controls
7.01 On/off switch
●By turning main switch 1, the machine is
switched on or off.
Fig. 7 - 02
7.02 Foot switch
●When the foot switch 1is actuated, the
following functions are called:
Level 1: retain sewing jig
Level 2: start sewing program
1
1

Controls
7 - 2
7.03 Control panel
The control panel consists of the display and two key panels.
7.03.01 Display
The display is divided into 2 lines:
●In the top line, the current values appear beneath the corresponding symbols.
Program number (from 0 - 99)
Stitch length (in mm)
Nominal speed (in min-1)
Actual speed (in min-1)
Quantity
●In the bottom line of the display, various texts are shown (e.g. input requests, error
messages, etc.). The text number of the text displayed follows the symbol "#".
The text number serves to uniquely assign the text in the various foreign languages.
Fig. 7 - 03

Controls
7 - 3
7.03.02 Control panel operation modes
You can select the operation modes by pressing the following keys. The selected mode can
be seen by the light emitting diode in the respective key.
SEWING mode
INPUT mode
Within both of the operation modes, only certain keys are assigned functions
(see chapter 7.03.03 Functions in the SEWING mode and chapter 7.03.04
Functions in the INPUT mode).
7.03.03 Functions in the SEWING mode
The following functions can be selected by pressing the corresponding red key.
Program stop
Interrupt sewing program.
Program start
Start sewing program or continue program following interruption.
Seam type forwards
Carry out seam type forwards step by step.
Combined with the program start key, the seam type sequence is carried out automatically.
Seam type backwards
Carry out seam type backwards step by step.
Combined with the program start key, the seam type sequence is carried out automatically.
Home position
Brings the feed carriage of the sewing jig to start position.
Presser foot up/down
The presser foot is raised/lowered and simultaneously, the feeding clamp of the sewing jig
is opened or closed.
Reset key
For acknowledging an error correction. (The key’s diode is lit when there is an error
message.)
Increase allowed speed
The specified speed is increased.
Decrease allowed speed
The specified speed is decreased.
003
202
077

Controls
7 - 4
7.03.04 Functions in the INPUT mode
The following functions can be selected by pressing the corresponding green key.
Program station A
When the function is activated (diode lit), a previously stored program is called.
Program station B
When the function is activated (diode lit), a previously stored program is called.
Program selection
When the function is activated (diode lit), a previously stored program can be selected via
the number keys or the plus/minus keys.
Stitch length change
When the function is activated (diode lit), the value for the stitch length can be changed via
the number keys or the plus/minus keys. The value entered must be confirmed with the
Enter key.
Reset unit counter
The unit counter is reset to "0".
Enter key
For confirming input values and dialogs (entry into functions).
Clear key
For resetting input values.
Esc key
For interrupting functions without assuming input values which may have been changed
(return to previous menu level).
Plus key
This key is used for
- increasing the input values in increments
- answering dialog questions with "yes" and
- for paging up in the menu mode.
Minus key
This key is used for
- for decreasing the input values in increments
- answering dialog questions with "no" and
- for paging down in the menu mode.
Number keys
This key is used for
- entering number values and
- direct selection of menu functions.
279
070

Mounting and commissioning the machine
8 - 1
8 Mounting and commissioning the machine
After unpacking the machine, check it for any transport damage. In case of damage, inform
the shipping company and the responsible PFAFF dealer.
The machine must only be mounted and commissioned by qualified personnel!
All relevant safety regulations are to be observed!
8.01 Mounting
The location where the machine is set up must have a flat, sturdy surface. Suitable
connections for supplying electricity and compressed air must also be provided (refer to
chapter 3 Specifications).
8.01.01 Aligning the machine
●Lift the machine with a forklift from the shipping pallet.
●Screw the enclosed rubber springs onto the legs.
●Set down the machine on the ground and make sure it is standing horizontally by
adjusting the legs.
Fig. 8 - 01

Mounting and commissioning the machine
8 - 2
8.01.02 Connecting the foot switch
●Connect plug 1in the socket and secure
with the circlip.
Fig. 8 - 03
Fig. 8 - 02
8.01.03 Connecting disk drive and/or programming panel
●For disk drive and/or programming panel,
connect the transmission cable plug to
socket 1.
●The power plug of the disk drive can be
plugged into connection 2.
1
2
1