Pfaff Industrial 1244 User manual

INSTRUCTION MANUAL
296-12-18 243/002
Betriebsanleitung engl. 07.14
This instruction manual applies to machines from the
following serial numbers onwards:
# 7 250 050
1243
1244
Industrial
®

This Instruction Manual is valid for all models and subclasses listed in the
chapter "Specifications
The adjustment manual for the machines can be downloaded free of charge
www.pfaff-industrial.com/pfaff/de/service/downloads
As an alternative to the internet download the adjustment manual can also be
ordered in book form under part no. 296-12-19 244/002
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.
PFAFF Industriesysteme
und Maschinen AG
Hans-Geiger-Str. 12 - IG Nord
D-67661 Kaiserslautern
".
from the internet address.

Index
Contents.................................................................................... Chapter - Page
1Safety......................................................................................................................... 1 - 1
1.01Directives..................................................................................................................... 1 - 1
1.02General notes on safety ........................................................................................... 1 - 1
1.03 Safety symbols .......................................................................................................... 1 - 2
1.04 Important points for the user .................................................................................... 1 - 2
1.05Operating and specialist personnel ............................................................................ 1 - 3
1.05.01 Operating personnel......................................................................... .......................... 1 - 3
1.05.02 Specialist personnel..................................................................................................... 1 - 3
1.06Danger warnings......................................................................................................... 1 - 4
2Proper use................................................................................................................. 2 - 1
3Specification.............................................................................................................. 3 - 1
3.01PFAFF 1243; PFAFF 1244 .......................................................................................... 3 - 1
3.02 Models and Subclasses.................. ........................................................................... 3 - 2
3.03 Max. number of stitches/min-1 for the PFAFF 1243................................................... 3 - 2
3.04 Max. number of stitches/min-1 for the PFAFF 1244.............................. .................... 3 - 2
4Disposal of Machine................................................................................................. 4 - 1
5Transportation, packing and storage ....................................................................... 5 - 1
5.01 Transportation to customer‘s premises ...................................................................... 5 - 1
5.02 Transportation to customer‘s premises ...................................................................... 5 - 1
5.03Disposal of packing materials ..................................................................................... 5 - 1
5.04Storage ....................................................................................................................... 5 - 1
6Explanation of symbols .......................................................................................... 6 - 1
7Controls..................................................................................................................... 7 - 1
7.01 On/off switch............................................................................................................. 7 - 1
7.02 Pedal (on machines without subclass -911/97)........................................................... 7 - 1
7.03 Pedal (on machines with subclass -911/97)................................................................ 7 - 2
7.04 Knee lever (on machines without subclass -911/97 ).................................................. 7 - 2
7.05 Key on machine head (on machines with subclass -911/97)....................................... 7 - 3
7.06 Lever for lifting the roller presser ............................................................................... 7 - 3
7.07 Feed regulator / reverse sewing.................................................................................. 7 - 4
7.08 Feed regulator (on machines with subclass -911/97).................................................. 7 - 4
8Installation and commissioning............................................................................... 8 - 1
8.01Installation................................................................................................................. 8 - 1
8.01.01 Adjusting the table-top height.................................................................................... 8 - 1
8.01.02 Assembling the motor (only on machines with motor) ............................................... 8 - 2
7.09 Control panel ( on machines with attached motor ) .................................................... 7 - 5
8.01.03 Tightening the V-belt ................................................................................................... 8 - 2
8.01.04 Mounting the bottom V-belt guard.............................................................................. 8 - 3

Index
Contents ................................................................................... Chapter - Page
8.01.05 Mounting the upper V-belt guard .............................................................................. 8 - 4
8.01.07Fitting the tilt look ...................................................................................................... 8 - 5
8.01.06Fitting the synchronizer............................................................. ................................. 8 - 4
8.01.08Fitting the reel stand .................................................................................................. 8 - 5
8.03Commissioning ........................................................................................................... 8 - 7
8.04 Switching the machine on/off ..................................................................................... 8 - 7
9Setting up ................................................................................................................. 9 - 1
9.01 Inserting the needle on the PFAFF 1243..................................................................... 9 - 1
9.02 Inserting the needle on the PFAFF 1244.................................................................... 9 - 2
9.03 Winding the bobbin thread, regulating the winder tension ......................................... 9 - 3
9.04 Changing the bobbin................................................................................................... 9 - 4
9.05Threading the bobbin thread and regulating the bobbin thread tension.......................... 9 - 4
9.06 Threading needle thread/adjusting needle thread tension ( on the PFAFF 1243 ) .............. 9 - 5
9.07 Threading needle thread/adjusting needle thread tension ( on the PFAFF 1244 ) .............. 9 - 6
9.08 Adjusting the stitch counter for the bobbin thread control......................................... 9 - 7
10 Care and maintenance............................................................................................ 10 - 1
10.01Servicing and maintenance intervals......................................................................... 10 - 1
10.02 Cleaning the hook compartment and the hook ........................................................ 10 - 1
10.03 General oiling............................................................................................................ 10 - 2
10.04 Oiling the sewing hook ............................................................................................ 10 - 3
10.05 Oiling the needle-head parts .................................................................................... 10 - 4
10.06Checking/regulating the air pressure ...................................................................... 10 - 4
10.07 Emptying/cleaning the water bowl of the air filter/regulator .................................... 10 - 5
10.08 Parameter settings ...... ........................................................................................... 10 - 6
10.08.01 Parameter. list .......................................................................................................... 10 - 6
11 Mounting the table top and Circuit diagrams.... .................................................... 11 - 1
11.01 Table top cutout ....................................................................................................... 11 - 1
11.02 Mounting the table top ............................................................................................. 11 - 2
11.03 Circuit diagrams. ....................................................................................................... 11 - 3
12 Wearing parts ........................................................................................................ 12 - 1
8.02 Connecting the plug-in connections and earth cables .............................................. 8 - 6
8.05 Basic position of the machine drive unit ..................................................................... 8 - 8

Safety
1 - 1
1 Safety
1.01Regulations
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
1.02General 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
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!
Conversion or modification of the machine must only be carried out under observation of
all relevant safety regulations!
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.
accidents, or other supervisory authorities, must be strictly adhered to!
adjustment and function checks by appropriately trained personnel!
Work on parts or equipment connected to the power supply is not permitted! The only
exceptions to this are specified in regulations EN 50110.

1 - 2
Safety
Caution
Do not operate without finger guard and safety devices.
Before threading, changing bobbin and needle, cleaning
etc. switch off main switch.
1.03Safety symbols
Danger!
Special points to observe
Danger of injury to operating or technical staff!
1.04Important 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.
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
The instruction manual must be read before the machine is operated for the first time.

Safety
1 - 3
1.05Notes for operating and technical staff
1.05.01 Operating staff
Operating staff are the persons responsible for setting up, operating and cleaning the mach-
ine and for removing any disturbances in the sewing area.
The operating staff are obliged to observe the following points, and must:
always observe the notes on safety in this instruction manual!
avoid using any working methods which adversely effect the safety of the machine!
avoid wearing loose-fitting clothing or jewelry such as necklaces or rings!
also ensure that only authorized 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,
The technical staff are obliged to observe the following points, and must:
always observe the notes on safety in this instruction manual!
switch off the on/off switch before carrying out adjustment and repair work and ensure it
cannot be switched on again unintentionally!
never work on parts or equipment still connected to the power supply! Exceptions to this
are only permissible according to regulations EN 50110;
isolate the machine from the compressed air supply when carrying out maintenance or
repair work on pneumatic equipment!
replace all safety covers after carrying out maintenance or repair work!
repairing and adjusting the machine.
Exceptions to this are only permissible for function checks;

1 - 4
Safety
Fig. 1 - 01
1.06 Danger warnings
A working area of
1
2
3
0
4
13
2
5
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, alwys 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 operate machines with a presser foot without the finger guard 2!
Danger of injury by the moving needle!
Do not operate the machine without belt guards 3and 4!
Danger of injury by the revolving drive belt!
Do not operate the machine without tilt-back safeguard 5!
Danger of fingers being crushed if the machine closes accidentally!

Proper use
2 - 1
2Proper use
The machines are used for producing lockstitch seams in the textile and leather industries.
Any use of these machines which is not approved by the manufacturer shall be
considered as improper use! The manufacturer shall not be 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!
ThePFAFF 1244 is a two-needle lockstitch sewing machine with roller presser and large
ThePFAFF 1243 is a single-needle lockstitch sewing machine with roller presser and large
vertical sewing hook.
vertical sewing hook.

Specifications
3 - 1
3 Specifications
3.01PFAFF 1243, PFAFF 1244
Stitch type:................................................................................................ 301 ( lockstitch )
Needle system.................................................................................................................134
Needle size in 1/100 mm: ......................................................................................110 - 140
Max. thread size ( synthetic
*
): .....................................................................................15/3
Max. stitch length:
Version CN8 : .....................................................................................................8,0 mm
Effective dia. of balance wheel: ................................................................................90 mm
Dimensions of the machine:
Length:........................................................................................................approx. 530 mm
Breadth:........................................................................................................approx. 177 mm
Height (above table):....................................................................................approx. 265 mm
Clearance width: ..................................................................................................270 mm
Clearance height: ...................................................................................................115 mm
Fabric clearance under roller presser.............................................................................. 5 mm
Net weight (machine head):................................................................................. approx.42 kg
Motor data:........................................................................... see motor specification plate
Working pressure:.......................................................................................................... 6 bar
Air consumption:..................................................................................~0,8 l litres/work cycle
Noise data:
Emission sound level at the workplace at appropriate speed
( Noise measurement in accordance with DIN 45 635-48-A-1,ISO 11204, ISO 3744, ISO 4871 )
PFAFF 1243 at a speed of 1500 spm.:
-:....... ........................................................ LpA =79 dB(A)
PFAFF 1244 at a speed of 1400 spm.:......................................................... LpA =79 dB(A)
Subject to technical alterations
* Or comparable sizes of other thread types
KpA = 2,5 dB

3 - 2
Specifications
3.03 Max. speeds of the PFAFF 1243
Max.speed (r.p.m.)
PFAFF 1243 2100
Type of machine
3.04Max. speeds of the PFAFF 1244
3.02 Models and subclasses
Model CN8 : ..........................................................For processing medium-heavy materials
Additional equipment:
Subclass -900/56 .........................................................................................Thread trimmer
Subclass -911/97 .....................Automatic presser-foot lifter with backtacking mechanism
Model
CN8
Subclass -4/01.................................................................................................Roller presser
Max.speed (r.p.m.)
PFAFF 1244 2000
Type of machine Model
CN8

Disposal of Machine
4 - 1
4 Disposal of Machine
Proper disposal of the machine is the responsibility of the customer.
The materials used for the machine are steel, aluminium, brass and various plastic
materials.
The electrical equipment comprises plastic materials and copper.
The machine is to be disposed of according to the locally valid pollution control regula-
tions; if necessary, a specialist ist to be commissioned.
Care must be taken that parts soiled with lubricants are dispoed of separately
according to the locally valid pollution control regulations!

Transportation, packing and storage
5 - 1
5 Transportation, packing and storage
5.01Transportation to customer's premises
The machines are delivered completely packed.
5.02Transportation inside the customer's premises
The manufacturer cannot be made liable for transportation inside the customer's premises
nor to other operating locations. It must be ensured that the machines are only transported
in an upright position.
5.03Disposal 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.
5.04Storage
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 symbols
6 - 1
6 Explanation of symbols
In this instruction manual, work to be carried out or important information is accentuated by
symbols. These symbols have the following meanings:
Note, information
Cleaning, care
Lubrication
Maintenance, repairs, adjustment, service work
(only to be carried out by technical staff)

Controls
7 - 1
7.02Pedal ( on machines without subclass -911/97)
0= Neutral position
+1 =Sewing
-1 = Thread trimming (on machines with
thread trimmer)
Fig. 7 - 02
0
+1
-1
Fig. 7 - 01
7Controls
7.01 On/off switch
The power supply to the machine is
The illustrated on/off switch is
fitted to machines with motors.
If other motors are sed, a
different switch may be fitted.
1
switched on or off by turning switch 1.

Controls
7 - 2
7. 04 Knee lever (on machines without subclass -911/97)
The presesr foot is raised by pressing
Fig. 7 - 04
7 .03 Pedal (on machines with subclass -911/97
0= Neutral position
+1 = Sewing
-1 = Raise presser foot
-2 = Thread trimming (on machines with
thread trimmer)
Fig. 7 - 03
0
+1
-1 -2
1
knee lever 1.

Controls
7 - 3
Fig. 11 - 17
7.06 Lever for lifting the roller presser
7.05 Key on machine head (on machines with subclass -911/97)
1
Fig. 7 - 06
1
If key 1is pressed during sewing, the
machine will switch to reverse sewing.
The roller presser is lifted by
raising lever 1.

Controls
7 - 4
1
2
3
0
7.08 Feed regulator (on machines with subclass -911/97)
Fig. 7 - 08
Fig. 7 - 07
7.07Feed regulator/reverse sewing
2
1
1
The stitch length is adjusted by turning
the knurled nut on lever 1.
●To reverse the sewing direction press
lever 1fully upwards.
Turn knurled screw 1to adjust the stitch
length for sewing forwards.
●Turn knurled screw 2to adjust the stitch
length for sewing backwards.
Reverse stitches can be set as
long as required, independently
of forward stitches.

Controls
7 - 5
7.09 Control panel (only on machines with attached motor)
The description can be found in the separate instruction manual for the control panel.

8 - 1
Installation and commissioning
8 Installation and commissioning
The machine must only be mounted and commissioned by qualified personnel!
All relevant safety regulations are to be observed!
If the machine is delivered without a table, it must be ensured that the frame
and the table top which you intend to use can hold the weight of the machine
and the motor. It must be ensured that the supporting structure is sufficiently
sturdy, including during all sewing operations.
8.01Installation
The site where the machine is installed must be provided with suitable connections for the
electric current, see Chapter 3 Specifications.
It must also be ensured that the standing surface of the machine site is firm and horizontal,
and that sufficient lighting is provided.
The method of packaging used requires that the table top be lowered for
transport. The following is a description of how to adjust the height of the table
8.01.01 Adjusting the table-top height
Fig. 8 - 01
1
1
2
top.
Loosen screws 1and 2and set the desired table-top height
Tighten screws 1well.
Adjust the position of the pedal so that you can operate it comfortably and tighten
screw 2.