Pfaff 3339 User manual

296-12-17552
Betriebsanleitungengl.07.96
Instruction Manual
3339

At the time of printing, all information and illustrations contained in this document were
up to date.
Subject to alteration!
The reprinting, copying or translation of PFAFF parts lists whether in whole or in part,
is only permitted with our previous permission and with written reference to the source.
G.M. PFAFF AG
Postfach 3020
D- 67653 Kaiserslautern
Editorial office/Illustration
Verlag Technische Dokumentation
Postfach 1106
D-77901 Lahr

1Safety
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
1.06.01 Take up lever guard ........................................................................................... 1 - 4
1.06.02 Eye guard........................................................................................................... 1 - 4
1.06.03 Finger guard....................................................................................................... 1 - 5
1.06.04 Belt guard .......................................................................................................... 1 - 5
2Proper use ........................................................................................ 2 - 1
3Specifications ...................................................................................3 - 1
4Disposal of machine waste................................................................................ 4 - 1
5Notes on testing in accordance with EN 60204 - 1 ..................................5 - 1
5Transport, packaging and storage
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
7Explanation of the symbols ................................................................ 7 - 1
7Operational controls
7.01 On/Off switch .................................................................................................... 7 - 1
7.02 Pedal.................................................................................................................. 7 - 1
7.03 Adjustment pin for the seam construction size ................................................. 7 - 2
7.04 Adjustment lever for the seam construction size (on machines with quick
adjustment)........................................................................................................ 7 - 3
8Mounting and initial operation
8.01 Mounting ........................................................................................................... 8 - 1
8.01.01 Adjusting the table-top height............................................................................ 8 - 1
8.01.02 Positioning the machine head and mounting the anti tilt device........................ 8 - 2
8.01.03 Connecting the pneumatic lines and cables ...................................................... 8 - 2
8.01.04 Mounting the V-belt ........................................................................................... 8 - 3
8.01.05 Tightening the V-belt.......................................................................................... 8 - 3
8.01.06 Mounting the synchronizer ................................................................................ 8 - 4
8.01.07 Mounting the upper V-belt guard ....................................................................... 8 - 4
8.01.08 Mounting the lower V-belt guard ....................................................................... 8 - 4
Contents

Contents
8.01.09 Mounting the sewing lamp................................................................................ 8 - 5
8.01.10 Mounting the spool holder................................................................................. 8 - 5
8.02 Initial operation .................................................................................................. 8 - 5
8.03 Switching the machine on/off............................................................................ 8 - 5
9Preparation
9.01 Needle and thread ............................................................................................. 9 - 1
9.02 Inserting the needle........................................................................................... 9 - 2
9.03 Winding the bobbin thread, adjusting the primary thread tension ..................... 9 - 2
9.04 Inserting/removing the bobbin case................................................................... 9 - 3
9.05 Threading the bobbin case................................................................................. 9 - 3
9.06 Threading the needle thread.............................................................................. 9 - 4
9.07 Adjusting the needle thread tension .................................................................. 9 - 4
9.08 Adjusting the bobbin thread tension .................................................................. 9 - 5
9.09 Adjusting the thread brake................................................................................. 9 - 5
10 Care and maintenance
10.01 Care and maintenance intervals....................................................................... 10 - 1
10.02 Cleaning........................................................................................................... 10 - 1
10.03 General lubrication ........................................................................................... 10 - 2
10.04 Lubricating the machine head.......................................................................... 10 - 3
10.05 Oiling the hook................................................................................................. 10 - 3
10.06 Air pressure ..................................................................................................... 10 - 4
10.07 Emptying/cleaning the water trap of the maintenance unit ............................. 10 - 4
12 Adjustment
12.01 Tools, gauges and other accessories............................................................... 12 - 1
12.02 Notes on adjusting........................................................................................... 12 - 1
12.03 Abbreviations................................................................................................... 12 - 1
12.04 Clamp release lever ......................................................................................... 12 - 2
12.05 Connecting rod of the knife control segment .................................................. 12 - 3
12.06 Locking switch................................................................................................. 12 - 4
12.07 Centering the needle in the needle hole .......................................................... 12 - 5
12.08 Dismantling work for the following adjustments ............................................. 12 - 6
12.09 Hook-to-needle clearance ................................................................................ 12 - 9
12.10 Driver
12.10.01 Driver shaft in sewing arm direction ...............................................................12 - 10
12.10.02 Driver - needle guard ......................................................................................12 - 11
12.10.03 Driver play.......................................................................................................12 - 12
12.10.04 Driver reversal point and needle bar rise ........................................................12 - 13
12.11 Hook race .......................................................................................................12 - 15
12.12 Needle bar height ...........................................................................................12 - 16
12.13 Bobbin thread puller and knife ........................................................................12 - 17

Contents
12.14 Inserting the control cam................................................................................12 - 18
12.15 Feed stroke.....................................................................................................12 - 19
12.16 Thread catcher
12.16.01 Thread catcher - connecting crank..................................................................12 - 20
12.16.02 Thread catcher - position ................................................................................12 - 21
12.16.03 Thread catcher - movement............................................................................12 - 22
12.17 Counter blade on the needle plate and cutting test ........................................12 - 23
12.18 Presser feet ....................................................................................................12 - 24
12.19 Sewing construction in the presser foot cutouts ............................................12 - 25
12.20 Tension release cam.......................................................................................12 - 26
12.21 Tension release lever......................................................................................12 - 27
12.22 Synchronizer ...................................................................................................12 - 28
12.23 Stop trip for starting the counting stitches for program-end position .............12 - 29
12.24 Lifting lever cylinder........................................................................................12 - 30
12.25 Throttles .........................................................................................................12 - 31
12.26 Bobbin winder.................................................................................................12 - 32
12.27 Thread wiper...................................................................................................12 - 33
12.28 Parameter adjustments ..................................................................................12 - 34
12.28.01 List of parameters ..........................................................................................12 - 35
12.28.02 Hidden parameters .........................................................................................12 - 35
12.29 Speed adjustment...........................................................................................12 - 36

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, observe also all generally accepted, statutory and
other regulations and legal requirements and all valid environmental protection regulations!
The regionally valid regulations of the social insurance society for occupational accidents or
other supervisory organisations 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.
●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, needle plate, feed dog or
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.
●When servicing or carrying out repairs on pneumatic devices, the machine is to be
removed from the compressed air supply. The only exceptions to this are adjustments
and function checks carried out by 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 in accordance with the regulations EN 50110.
●Modifications and alterations to the machine may only be carried out under observance
of all the relevant safety regulations.
●It is forbidden to operate the machine head until such time as is determined that the
entire sewing unit complies with the regulations of the EC Directives.
Safety
1 - 1

●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 construction characteristics of the machine.
We shall not be liable for any damage which may be caused by non-original parts!
1.03 Safety symbols
In this instruction manual safety symbols are used. Their meanings are as follows.
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 operator to only operate the machine in perfect running order.
●It is the obligation of the operator to ensure that none of the safety mechanisms are
removed or deactivated.
●It is the obligation of the operator to ensure that only authorised persons operate and
work on the machine.
Further information can be obtained at your PFAFF agent.
Safety
1 - 2

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 loosely fitting clothing or jewellery such as chains or rings.
●also ensure that only authorised persons have access to the potentially dangerous area
around the machine.
●always immediately report to the person responsible any changes in the machine which
may limit its safety.
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 obliged 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
contained in the regulations EN 50110.
●when servicing or carrying out repairs on pneumatic devices, remove the machine from
the compressed air supply. The only exceptions to this are function checks.
●replace the protective coverings and close the electrical control box after all repairs or
maintenance work.
Safety

Do not operate the machine
without the take up lever guard 1!
Danger of injury due to movement
of the take up lever!
+
+
Safety
1.06 Danger
1.06.01 Take up lever guard
1.06.02 Eye guard
Do not operate the machine
without the eye guard 2!
Danger of injury by pieces of
needle which can be slung away!
2
1
Fig. 1 - 01
Fig. 1 - 02
1 - 4

+
+
Safety
Do not operate the machine
without the belt guard4!
Danger of injury due to the
movement of the belt!
1.06.04 Belt guard
1.06.03 Finger guard
Do not operate the machine
without the finger guard 3!
Danger of injury due to the up and
down movement of the needle!
3
4
Fig. 1 - 03
Fig. 1 - 04
1 - 5

2 Proper use
The PFAFF 3339 is a high speed sewing machine for sewing lockstitch bartacks and short
seams.
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 includes the observance of all operational,
adjustment, maintenance and repair measures required by the manufacturer!
Proper use
2 - 1

3 Specifications
Stitch type:................................................................................................ 301 ( lockstitch )
Model:...................................................................................................................... A; B; C
Needle system:
on models A and B.......................................................................................................... 34
on model C and sub class -381/.. ..............................................................................DPx17
Needle thickness (Nm) in 1/100 mm:
on model A .............................................................................................................. 60 - 70
on model B ............................................................................................................ 80 - 100
on model C .......................................................................................................... 110 - 140
Max. speed.: .......................................................................................................2000 min-1
Max. seam construction size.: ......................................................................... 60 x 60 mm
Motor: ............................................................................................Quick QE 5542-P139SE
Maximum motor rpm:.........................................................................................1400 min-1
Dimensions of machine
Length:...................................................................................................... approx. 650 mm
Width: ....................................................................................................... approx. 360 mm
Height: ...................................................................................................... approx. 400 mm
Gross weight (machine head): ....................................................................... approx. 72 kg
Power supply: ........................................................... 190 - 240 V 50 / 60 Hz, single phase
Power input max.:.................................................................................................... 600 VA
Fuse protection: ............................................................................ 1 x 16 A, delayed action
Working air pressure:.................................................................................................. 6 bar
Air consumption:.................................................................................... ~0,8 l / work cycle
Working noise level:
Emission at workplace at sewing cycle of 2s on 2s off: .............................. L pA ≤79 dB (A)
noise measurement in accordance with DIN 45 635-48-B-1
Specifications
3 - 1

Disposal of the machine
4 Disposal of machine waste
●The proper disposal of machine waste is the responsibility of the customer.
●The materials used on the machines are steel, aluminium, brass and various plastics.
The electrical equipment consists of plastics and copper.
●The machine waste is to be disposed of in accordance with the locally valid
environmental protection regulations. If necessary a specialist is to be commissioned.
Special care is to be taken that parts soiled with lubricants are separately
disposed of in accordance with the locally valid pollution control 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 as follows:
Stand: In crate or cover, dependent on method of transport.
Machine head: In carton with polyurethane high-resistance foam filling.
5.02 Transport within the customers premises
The manufacturer carries no liability for transport within the customer’s premises.
Care is to be taken to transport the machine in an upright position.
5.03 Disposal of the packaging
The packaging of the machine consists of wood, paper, cardboard, VCE fibre and
polyurethane high-resistance foam.
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 against corrosion e.g. by a film of oil.
5 - 1

Explanation of the symbols
6 Explanation of the symbols
In the following section of this Instruction Manual, certain tasks or important pieces of
information are accentuated by symbols.
The symbols used have the following meanings:
Note, information
Cleaning, care
Servicing, repairing, adjustment, maintenance
(only to be carried out by specialist personnel)
Lubrication, greasing
6- 1

Operational controls
7 Operational controls
7.01 On/off switch
7.02 Pedal
When the motor is on
0= motor is running, work clamp is lifted.
+1 = Work clamp is lowered.
+2 = The sewing procedure is triggered off
and completed automatically.
+1
0
●Switch the machine on/off by switching
switch 1up or down. When the machine
is on, the light in the switch is lit.
7 - 1
1
+2
Fig. 7 - 01
Fig. 7 - 02

7 - 2
Operational controls
Switch off the machine!
●Lengthwise movement
Loosen nut 3and move pivot pin 4as
required.
7.03 Adjustment pin for the seam construction size
Switch off the machine!
●Lateral movement
Loosen nut 1and move pivot pin 2as
required.
2
1
4
3
Fig. 7 - 03
Fig. 7 - 04

Operational controls
7.04 Adjustment lever for the seam construction size
on machines with quick adjustment (subclasses -964/03)
●Lateral movement
Press lever 1down and move it as
required.
●Lengthwise movement
Press lever 2down and move it as
required.
7 - 3
1
2
Fig. 7 - 05
Fig. 7 - 06

8.01 Mounting
Due to reasons of packaging, the machine head and the stand are packaged
separately when destined for export. The mounting is described in the
following.
8.01.01 Adjusting the table-top height
Mounting and initial operation
8 Mounting and initial operation
This machine must only be mounted and operated by qualified specialist
personnel! All relevant safety regulations are to be observed!
The machine must be mounted where suitable electricity and compressed air
supplies are available (see specifications).
A horizontal and stable floor and adequate lighting must be present at the place
where the machine is mounted.
●Loosen screws 1and adjust the table-top height as desired.
●Tighten screws 1firmly.
8 - 1
11
Fig. 8 - 01

The plug to the main power
supply must be unplugged!
●Connect the pneumatic hoses from the
valve plate on the stand, with the
cylinder on the back of the machine
(taking care to observe the numbers on
the hoses).
●Screw cable 4(coming from the table
top) to the housing with two hose
clamps.
●Connect plugs5 and6to switch7 (plugs
can be connected in either position).
8.01.02 Positioning the machine head and mounting the anti tilt device
●Insert and attach the machine head into
the table top with its hinged hook.
●Tilt the machine head backwards a little
and have a second person hold it in this
position.
●Insert lever 1into the hole in the casing
and into the connecting link of the anti tilt
device2.
●Secure lever1with screw 3.
Return the machine to its upright position
Hold the machine firmly, lift the
anti tilt device 2and return the
machine to its upright position
with both hands.
Danger of crushing between
machine and table top !
8.01.03 Connecting the pneumatic lines and cables
8 - 2
3
1
2
4
5
6
7
Mounting and initial operation
Fig. 8 - 02
Fig. 8 - 03