Pfaff 333-712/02 User manual

Instruction manual
296-12-18 360/002
Betriebsanleitung engl. 10.02
333-712/02
-712/03
This instruction manual applies to machines from the
following serial numbers onwards:
# 2561095

This Instruction manual is valid for all models and subclasses listed in the
chapter „Specifications“.
The reprinting, copying or translation of PFAFF Instruction Manuals, whether in whole or in
part, is only permitted with our previous permission and with written reference to the
source.
PFAFF Industrie Maschinen AG
Postfach 3020
D-67653 Kaiserslautern
Königstr. 154
D-67655 Kaiserslautern
Redaktion / Illustration
HAAS-Publikationen GmbH
D-53840 Troisdorf

Contents
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 notes for the user ....................................................................................... 1 - 2
1.05 Operating and technical staff ...................................................................................... 1 - 3
1.05.01 Operating staff ............................................................................................................ 1 - 3
1.05.02 Technical staff ............................................................................................................ 1 - 3
1.06 Danger warnings ........................................................................................................ 1 - 4
2Proper use ................................................................................................................. 2 - 1
3Specifications ........................................................................................................... 3 - 1
3.01 PFAFF 333 .................................................................................................................. 3 -1
3.02 Models and subclasses .............................................................................................. 3 - 1
4Machine disposal ..................................................................................................... 4 - 1
5Transportation, packing and storage ...................................................................... 5 - 1
5.01 Transportation to customer’s premises ...................................................................... 5 - 1
5.02 Transportation inside customer’s premises ................................................................ 5 - 1
5.03 Disposal of packing materials ..................................................................................... 5 - 1
5.04 Storage ....................................................................................................................... 5 - 1
6Explanation of symbols............................................................................................ 6 - 1
7Controls..................................................................................................................... 7 - 1
7.01 On/off switch (PFAFF 333-712/03) .............................................................................. 7 - 1
7.02 On/off switch (PFAFF 333-712/02) .............................................................................. 7 - 1
7.03 Pedal (on versions with one pedal) ............................................................................. 7 - 2
7.04 Pedals (on version with two pedals) ........................................................................... 7 - 2
7.05 Top feed stroke adjustment ........................................................................................ 7 - 3
8Installation and commissioning .............................................................................. 8 - 1
8.01 Installation .................................................................................................................. 8 - 1
8.01.01 Adjusting the table height ........................................................................................... 8 - 1
8.01.02 Tensioning the v-belt (PFAFF 333-712/03) ................................................................... 8 - 2
8.01.03 Fitting the upper belt guard (PFAFF 333-712/03) .......................................................... 8 - 2
8.01.04 Fitting the lower belt guard (PFAFF 333-712/03) .......................................................... 8 - 3
8.02 Mounting the flange motor (PFAFF 333-712/02) .......................................................... 8 - 3
8.02.01 Mounting the flange motor to the bearing plate ........................................................... 8 - 3
8.02.02 Mounting the flange motor to the machine ................................................................. 8 - 4
8.02.03 Mounting the belt guard of the flange motor ............................................................... 8 - 4

Contents
Contents ............................................................................... Chapter - Page
8.02.04 Connecting the plug connections and earth cable ....................................................... 8 - 5
8.03 Mounting the thread retainers ..................................................................................... 8 - 5
8.04 Assembling the reel stand .......................................................................................... 8 - 6
8.05 Fitting the sewing lampts ........................................................................................... 8 - 6
8.06 Commissioning .......................................................................................................... 8 - 6
8.07 Switching the machine on/off ..................................................................................... 8 - 6
9Setting up .................................................................................................................. 9 - 1
9.01 Inserting the needle .................................................................................................... 9 - 1
9.02 Winding the bobbin thread, regulating the winder tension ........................................... 9 - 2
9.03 Changing the bobbin ................................................................................................... 9 - 3
9.04 Threading the bobbin thread and regulating the bobbin thread tension ......................... 9 - 3
9.05 Threading needle thread/adjusting needle thread tension
(on the Pfaff 333-712/02) ............................................................................................ 9 - 4
9.06 Threading needle thread/adjusting needle thread tension
(on the PFAFF 333-712/03) ......................................................................................... 9 - 5
9.07 Threading the gimp thread .......................................................................................... 9 - 6
10 Care and maintenance ............................................................................................ 10 - 1
10.01 Care and maintenance intervals ............................................................................... 10 - 1
10.02 Cleaning ................................................................................................................... 10 - 1
10.03 General oiling ............................................................................................................ 10 -2
10.04 Oiling the sewing hook ............................................................................................. 10 - 3
10.05 Oiling the needle head parts ..................................................................................... 10 - 3
11 Adjustment ............................................................................................................... 11 - 1
11.01 Notes on adjustment ................................................................................................ 11 - 1
11.02 Tools, gauges and other equipment .......................................................................... 11 - 1
11.03 Abbreviations ............................................................................................................ 11 - 1
11.04. Adjustment of the basic machine ............................................................................. 11 - 2
11.04.01 Needle position in needle hole .................................................................................. 11 - 2
11.04.02 Needle height (preliminary adjustment ...................................................................... 11 - 3
11.04.03 Hook clearance, needle rise and needle height ......................................................... 11 - 4
11.04.04 Top feed lifting motion .............................................................................................. 11 - 5
11.04.05 Top feed stroke ......................................................................................................... 11 - 6
11.04.06 Needle-thread tension release (on the PFAFF 333-712/02) ........................................ 11 - 7
11.04.07 Needle-thread tension release (on the PFAFF 333-712/03) ........................................ 11 - 8
11.04.08 Thread check spring ................................................................................................. 11 - 9
11.04.09 Bobbin winder .......................................................................................................... 11 - 10
11.04.10 Pressure of the lifting presser ................................................................................... 11 - 11
11.05 Adjusting the thread trimmer –900/51 ................................................................... 11 - 12
11.05.01 Control cam (preliminary adjustment) ....................................................................... 11 - 12

Contents
Contents ............................................................................... Chapter - Page
11.05.02 Control lever height ................................................................................................... 11 - 13
11.05.03 Control pin ................................................................................................................ 11 - 14
11.05.04 Engaging solenoid ..................................................................................................... 11 - 15
11.05.05 Control pin height ...................................................................................................... 11 - 16
11.05.06 Front position of thread catcher ................................................................................ 11 - 17
11.05.07 Lateral position of thread catcher .............................................................................. 11 - 18
11.05.08 Control cam (final adjustment) .................................................................................. 11 - 19
11.05.09 Knife ......................................................................................................................... 11 - 20
11.05.10 Cutting test ............................................................................................................... 11 - 21
11.05.11 Adjusting the synchronizer (PFAFF 333-712/03) ........................................................ 11 - 22
11.05.12 Setting the parameters for machine positions (PFAFF 333-712/02) ........................... 11 - 22
12 Wearing parts ......................................................................................................... 12 - 1

1 - 1
Safety
1 Safety
1.01 Regulations
This machine has been made according to the European regulations indicated in the
conformity and manufacturer’s declarations.
In addition to this instruction manual, please also observe all generally accepted statutory
and other legal requirements, including those of the user’s country, and the valid pollution
control regulations!
The locally valid regulations of the social insurance institution responsible for occupational
accidents, or other supervisory authorities, must be strictly adhered to!
1.02 General notes on safety
●The machine must only be operated when the instruction manual has been fully read and
understood, and only by operators who have had the necessary training!
●All notes on safety and the instruction manual of the motor manufacturer must be read
before the machine is put into operation!
●All notices on the machine referring to danger and safety must be observed!
●The machine must be used for the purpose it is intended for and must not be operated
without its safety devices; all regulations relevant to safety must be adhered to.
●When part sets are changed (e.g. needle, presser foot and needle plate), during
threading, when the workplace is left unattended and during maintenance work, the
machine must be isolated from the power supply by pressing the on/off switch or
removing the plug from the mains!
●Daily maintenance work must only be carried out by appropriately trained persons!
●Repairs and special maintenance work must only be carried out by qualified technical
staff or persons with the appropriate training! Exceptions to this are only allowed for
adjustment and function checks by appropriately trained personnel!
●Repair work and special maintenance work must only be carried out by technical
personnel or by persons with the appropriate training!
●Work on the electrical equipment must only be carried out by technical staff who are
qualified to do so!
●Work on parts or equipment connected to the power supply is not permitted! The only
exceptions to this are specified in regulations EN 50110.
●Conversion or modification of the machine must only be carried out under observation of
all relevant safety regulations!

Safety
1 - 2
●Only spare parts which have been approved by us are to be used for repairs! We draw
special attention to the fact that spare parts and accessories not supplied by us have not
been subjected to testing nor approval by us. Fitting and/or use of any such parts may
cause negative changes to the design properties of the machine. We shall not accept
any liability for damage caused by the use of non-original parts.
1.03 Safety symbols
Danger!
Special points to observe.
Danger of injury to operating or technical staff!
!
1.04 Important notes for the user
●This instruction manual is part of the equipment of the machine and must be available to
the operating staff at all times.
●The instruction manual must be read before the machine is operated for the first time.
●Both operating and technical staff must be instructed on the safety devices of the
machine and on safe working methods.
●It is the duty of the user to operate the machine in perfect running order only.
●The user must ensure that none of the safety devices are removed nor put out of
working order.
●The user must ensure that only authorized persons operate and work on the machine.
For further information please refer to your PFAFF agency.
I
Caution
Do not operate without finger guard and safety devices.
Before threading, changing bobbin and needle, cleaning
etc. switch off main switch.

1 - 3
Safety
1.05 Notes for operating and technical staff
1.05.01 Operating staff
Operating staff are the persons responsible for setting up, operating and cleaning the
machine and for removing any disturbances in the sewing area.
The operating staff must be sure to observe the following items:
●always observe the notes on safety in this instruction manual in their work!
●refrain from any working methods which adversely effect the safety of the machine!
●avoid wearing loose clothing or jewelry such as necklaces or rings!
●also make sure that only authorised persons are allowed near the danger area of the
machine
●immediately report to the user any changes to the machine that may affect its safety!
1.05.02 Technical staff
Technical staff are persons who have been trained in electrical engineering, electronics,
pneumatics and mechanical engineering. They are responsible for lubricating, servicing,
repairing and adjusting the machine.
The technical staff must be sure to observe the following items:
●always observe the notes on safety in this instruction manual in their work!
●press the on/off switch before carrying out adjustment and repair work, and ensure it
cannot be switched on again unintentionally, or isolate the machine from the power
supply by removing the mains plug!
●never work on parts or equipment still connected to the power supply! Exceptions to this
are only permissible according to regulations EN 50110;
●replace all safety covers after carrying out maintenance or repair work and, if applicable,
close the electrical control box again!

Safety
1 - 4
1.06 Danger warnings
A working area of 1 m must be kept free both in front of and behind the
machine, so that easy access is possible at all times.
Never put your hands or fingers in the sewing area during sewing!
Danger of injury by the needle!
While setting or adjusting the machine do not leave any objects on the table nor
in the needle plate area! Objects may be trapped or flung out of the machine!
When a mechanically operated clutch motor without actuation lock is switched
off, always wait until the motor has stopped! Danger of injury!
Do not run the machine without take-up lever guard 1!
Danger of injury by moving take-up lever!
Do not run the machine without belt guards 2 and 3!
Danger of injury by rotating v-belt!
Do not run the machine without finger guard 4!
Danger of injury by up and down movement of needle!
Do not run the machine without cylinder-bed cap 5!
Danger of injury by rotating hook!
Fig. 1 - 01
12
5
43

Proper use
2 - 1
2 Proper use
The PFAFF 333 is a single-needle lockstitch cylinder bed sewing machine for industrial
lockstitch darning operations.
Any use of this machine which is not approved by the manufacturer shall be
considered as improper use! The manufacturer shall not be held liable for any
damage arising out of improper use! Proper use shall also be considered to
include compliance with the operation, adjustment, service and repair
measures specified by the manufacturer!

3 - 1
Specifications
3 Specifications
3.01 PFAFF 333◆
Stitch type: .................................................................................................. 301 (lockstitch)
Machine model: ................................................................................................................ B
Needle system .............................................................................................................. 190
Needle size in 1/100 mm: ..................................................................................... 80 to 100
Max. thread size (synthetic▲): ...................................................................................... 40/3
Max. sewing speed.*:
PFAFF 333-712/02 ............................................................................................ 1,000 s.p.m.
PFAFF 333-712/03 ............................................................................................ 1,500 s.p.m.
Effective dia. of balance wheel ................................................................................ 90 mm
Dimensions of the machine:
Cylinder-bed end dia.: ............................................................................................... 51 mm
Cylinder-bed circumference:: .................................................................... approx. 165 mm
Length: ...................................................................................................... approx. 770 mm
Breadth: .................................................................................................... approx. 380 mm
Height (above table) .................................................................................. approx. 630 mm
Clear workspace length: ......................................................................................... 265 mm
Clear workspace height: ......................................................................................... 115 mm
Max. fabric clearance:
PFAFF 333-712/02 .................................................................................................... 20 mm
PFAFF 333-712/03 .................................................................................................... 11 mm
Net weight (sewing head): ............................................................................. approx. 38 kg
Mains voltage: ................................................................... see instruction manual of motor
Max. power input: ............................................................. see instruction manual of motor
Power supply fuse: ........................................................... see instruction manual of motor
Ambient noise level:
Workplace noise level, PFAFF 333-712/02, at a speed of 800 r.p.m. ..................... 78 dB(A)
Workplace noise level, PFAFF 333-712/03, at a speed of 1,200 r.p.m. ................... 80 dB(A)
Noise measurement according to DIN 45636-48-A-1
◆Subject to technical alterations
▲ Or comparable sizes of other thread types
* Depending on material and operation
3.02 Possible versions and subclasses
Version B: ............................................................................. For sewing medium materials
Work aids:
Subclass –900/51 ........................................................................................ Thread trimmer

Disposal of the machine
4 - 1
4 Disposal of the machine
●The proper disposal of the machine is the responsibility of the user.
●The materials used for the machine 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 pollution control
regulations. If necessary, a specialist is to be consulted.
Special care is to be taken that parts soiled by lubricants are separately
disposed of in accordance with the applicable local environmental pollution
control regulations!

5 - 1
Transportation, packing and storage
5 Transportation, packing and storage
5.01 Transportation to customer's premises
Within the Federal Republic of Germany, complete machines (with table and motor) are
delivered without packing.
Machines without table (only sewing heads) and machines intended for exports are packed.
5.02 Transportation inside the customer's premises
The manufacturer cannot be made liable for transportation inside the customer's premises
nor to other operating locations.
5.03 Disposal of packing materials
The packing materials of this machine comprise paper, cardboard and VCE fibre. Proper dis-
posal of the packing material is the responsibility of the customer.
5.04 Storage
If the machine is not in use, it can be stored as it is for a period of up to six months, but It
should be protected against dust and moisture.
If the machine is stored for longer periods, the individual parts, especially the surfaces of
moving parts, must be protected against corrosion, e.g. by a film of oil.

Explanation of the symbols
6 - 1
6 Explanation of the symbols
In this Instruction Manual, work 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)

Controls
7 - 1
Fig. 7 - 01
7 Controls
7.01 On/off switch (PFAFF 333-712/03)
●Switch the machine on or off by turning
on/off switch 1.
The illustrated on/off switch is
fitted to machines with Quick
motors. If other motors are
used, a different switch may be
fitted.
O
1
7.02 On/off switch (PFAFF 333-712/02)
●Turn the machine on/off by pressing the
On/Off switch 1.
Fig. 7 - 02
1

Controls
7 - 2
7.03 Pedal (on versions with one pedal)
0= Neutral position
1= Sewing
2= Thread trimming (on machines with
thread trimmer –900/51) and presser
foot lifting.
For further pedal functions
please refer to the instruction
manual of the motor
manufacturer.
Fig. 7 - 03
0
1
2
7.04 Pedals (on version with two pedals)
0= Neutral position
1= Sewing
2= Thread trimming (on machines with
thread trimmer –900/51).
3= Raise presser foot
For further pedal functions
please refer to the instruction
manual of the motor
manufacturer.
Fig. 7 - 04
0
1
3
2

Controls
7 - 3
1
3
2
+
-
7.05 Top feed stroke adjustment
Switch off the machine!
Danger of injury due to
unintentional starting of the
machine!
●The top feed stroke is adjusted by re-
positioning lever 1. To do this, remove
cover 2 at the rear side of the machine
and loosen screw 3.
●After adjustment, tighten screw 3and
close cover 2.
Fig. 7 - 05

8 - 1
Installation and commissioning
8 Installation and commissioning
The machine must only be installed and commissioned by qualified personnel!
All relevant safety regulations must be strictly adhered to!
If the machine is delivered without a table, be sure to use a stand and table that
will reliably support the weight of the machine with its motor.
It is very important to ensure that the stand of the machine is firm and steady,
also during sewing.
8.01 Installation
The site where the machine is installed must be provided with suitable connections for
electric current and compressed air. It must be ensured that the standing surface of the
machine site is firm and horizontal and that sufficient lighting is available.
For packing and transportation reasons the table top is in the lowered position.
The table height is adjuted as described below.
8.01.01 Adjusting the table height
●Loosen screws 1and 2and set the table at the required height.
●Fully tighten screw 1.
●Set the required pedal position and tighten tighten screw 2.
Fig. 8 - 01
1
1
2

Installation and commissioning
8 - 2
8.01.02 Tensioning the v-belt (PFAFF 333-712/03)
●Loosen nuts 1.
●Tension v-belt by adjusting bracket 2.
●Tighten nuts 1.
Fig. 8-02 shows a Quick motor.
If a different motor is used,
please refer to the instruction
manual of the motor
manufacturer.
8.01.03 Fitting the upper belt guard (PFAFF 333-712/03)
If a large balance wheel is in
use, break off corner 1of belt
guard part 3.
●Screw stop piece 2onto belt guard part 3.
●Screw on belt guard part 3onto the
housing.
●Screw on belt guard part 4onto the
housing.
●Secure belt guard parts 5and 6onto the
table top.
Fig. 8 - 02
Fig. 8 - 03
2 cm
12
4
1
5
3
6
2

8 - 3
Installation and commissioning
8.01.04 Fitting the lower belt guard (PFAFF 333-712/03)
●Position belt guard 1so that motor pulley
and v-belt can run freely.
Fig. 8-04 shows a Quick motor.
If a different motor is used,
please refer to the instruction
manual of the motor
manufacturer.
Fig. 8 - 04
1
8.02 Mounting the flange motor (PFAFF 333-712/02)
8.02.01 Mounting the flange motor to the bearing plate
●Attach bearing plate 1to motor 2with
screws 3as shown in Fig. 8 - 05.
Fig. 8 - 05
1
2
3
3