Pfaff 422 User manual

INSTRUCTION MANUAL
296-12-18 397/002
Betriebsanleitung engl. 06.09
This instruction manual applies to machines from the
following serial numbers onwards:
# 540 337
422
1422
Industrial
®

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 authorization and with written reference to the
source.
PFAFF Industriesysteme
und Maschinen AG
Hans-Geiger-Str. 12 - IG Nord
D-67661 Kaiserslautern

Contents
Contents ...............................................................................Chapter - Page
1Safety ........................................................................................................................ 1 -1
1.01 Regulations ................................................................................................................ 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 Notes for 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 422, PFAFF 1422............................................................................................ 3 - 1
3.02 Needle and thread...................................................................................................... 3 - 2
3.03 Possible work aids ..................................................................................................... 3 - 2
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 ............................................................................................................. 7 - 1
7.02 Keys on machine head............................................................................................... 7 - 1
7.03 Pedal .......................................................................................................................... 7 - 2
7.04 Knee lever.................................................................................................................. 7- 2
7.05 Presser bar lifter ........................................................................................................ 7 - 3
7.06 Feed regulator wheel ................................................................................................. 7 - 3
7.07 Reverse-feed control.................................................................................................. 7 - 4
8Installation and commissioning.............................................................................. 8 - 1
8.01 Installation.................................................................................................................. 8 - 1
8.01.01 Adjusting the table height .......................................................................................... 8 - 1
8.01.02 Fitting the tilt lock ...................................................................................................... 8 - 2
8.01.03 Tensioning the v-belt.................................................................................................. 8 - 2
8.01.04 Fitting the top v-belt guard......................................................................................... 8 - 3
8.01.05 Fitting the bottom v-belt guard .................................................................................. 8 - 3
8.01.06 Fitting the synchronizer.............................................................................................. 8 - 4
8.01.07 Fitting the reel stand .................................................................................................. 8 -4
8.02 Commissioning .......................................................................................................... 8 - 5

Contents
Contents ...............................................................................Chapter - Page
8.03 Switching the machine on/off .................................................................................... 8 - 5
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 Removing and inserting the bobbin case ................................................................... 9 - 3
9.04 Threading the bobbin case and adjusting the bobbin thread tension ......................... 9 - 3
9.05 Threading needle threads and regulating tensions..................................................... 9 - 4
10 Care and maintenance........................................................................................... 10 - 1
10.01 Cleaning the hook areas and the hooks ................................................................... 10 - 1
10.02 Oiling the hook......................................................................................................... 10 - 2
10.03 Checking/adjusting the air pressure ......................................................................... 10 - 3
10.04 Cleaning the air filter of the air-filter/lubricator ......................................................... 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 Adjusting the basic machine................................................................................. 11 - 2
11.04.01 Adjusting the synchronizer....................................................................................... 11 - 2
11.04.02 Balance weight ........................................................................................................ 11 - 3
11.04.03 Positioning the feed dog in the needle plate cutout................................................. 11 - 4
11.04.04 Neutral position of the feed dog .............................................................................. 11 - 5
11.04.05 Feeding stroke of feed dog...................................................................................... 11 - 6
11.04.06 Lifting stroke of feed dog......................................................................................... 11 - 7
11.04.07 Feed dog height ....................................................................................................... 11 - 8
11.04.08 Needles in needle-hole centre ................................................................................. 11 - 9
11.04.09 Needle height (preliminary adjustment) ................................................................... 11 -10
11.04.10 Needle rise, hook-to-needle clearance, needle height (final adjustment)
and needle guard ..................................................................................................... 11 - 11
11.04.11 Bobbin case opener stroke ...................................................................................... 11 - 13
11.04.12 Re-engaging the slip-clutch...................................................................................... 11 -14
11.04.13 Clearance between presser foot and needle plate................................................... 11 -15
11.04.14 Knee lever................................................................................................................11-16
11.04.15 Needle thread tension release (on machines without Subclass -900/81)................. 11 -17
11.04.16 Needle thread tension release (on machines with Subclass -900/81) ...................... 11 -18
11.04.17 Bobbin winder.......................................................................................................... 11 -19
11.04.18 Presser foot pressure .............................................................................................. 11 - 20
11.04.19 Thread check spring and thread regulator................................................................ 11 - 21
11.05 Adjusting the thread trimmer 900/81.................................................................... 11 -22
11.05.01 Resting position of roller lever/radial position of control cam................................... 11 - 22
11.05.02 Thread-catcher height .............................................................................................. 11 - 23
11.05.03 Thread catcher position............................................................................................ 11 - 24

Contents
Contents ...............................................................................Chapter - Page
11.05.04 Knife height..............................................................................................................11-25
11.05.05 Knife pressure.......................................................................................................... 11-26
11.05.06 Bobbin-thread retaining spring ................................................................................. 11 - 27
11.05.07 Thread catcher transmission crank ......................................................................... 11 -28
11.05.08 Tansmission linkage................................................................................................. 11 -29
11.05.09 Manual cutting test .................................................................................................. 11 - 30
11.06 Parameter adjustments ......................................................................................... 11 -31

1 - 1
Safety
1 Safety
1.01 Regulations
This machine is constructed in accordance with 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 applicable pol-
lution control regulations!
The valid regulations of the regional social insurance society for occupational accidents or
other supervisory authorities are to be strictly adhered to!
1.02 General notes on safety
●The machine must only be operated by adequately trained operators and only when the
instruction manual has been fully read and understood!
●All notices on safety and the instruction manual of the motor manufacturer are to be
read before the machine is put into operation!
●All notes on the machine concerning danger and safety must be observed!
●The machine must be used for the purpose for which it is intended 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, needle plate, feed dog or bob-
bin), during threading, when the workplace is left unattended and during maintenance
work, the machine must be isolated from the power supply by turning off 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 appropriate training!
●During maintenance or repairs on the pneumatic system the machine must be isolated
from the compressed air supply! The only exception to this is when adjustments or
function checks are carried out by appropriately trained technical staff!
●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!

1 - 2
Safety
●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 characteristics of the machine. We shall not ac-
cept 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 belongs to the equipment of the machine and must be available
to the operating staff at all times.
This 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 mach-
ine 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 work-
ing 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 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,
repairing and adjusting the machine.
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!
Exceptions to this are only permissible for function checks;
●replace all safety covers after carrying out maintenance or repair work!

1 - 4
Safety
1.06 Danger warnings
A working area of 1 m must be kept free both in front of and behind the mach-
ine, so that easy access is possible at all times.
Never put your hands 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 slung out of the mach-
ine!
Do not operate the machine without take-up lever guard 1!
Danger of injury due to movement of the take-up lever!
Do not operate the machine without belt guards 2und 3!
Dange of injury by the rotating v-belt!
Do not operate the macine without finger guard 4!
Danger of injury by the needle!
Do not operate the machine without tilt lock 5!
Danger of crushing between sewing head and table!
Fig. 1 - 01
12
3
4
5

Proper use
2 - 1
2 Proper use
The PFAFF 422 is a special two-needle high-speed lockstitch seamer with compound feed.
The PFAFF 1422 is a special two-needle high-speed lockstitch seamer with compound feed
and large sewing hook.
These machines are intended for sewing lockstitch seams in the textile industry.
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 dam-
age arising out of improper use! Proper use shall also be considered to include
compliance with the operation, adjustment, service and repair measures speci-
fied by the manufacturer!

3 - 1
Specifications
3 Specifications
3.01 PFAFF 422, PFAFF 1422▲
Stitch type:.................................................................................................. 301 (lockstitch)
Effective dia. of balance wheel: ............................................................................... 65 mm
Needle system:
PFAFF 422: ................................................................................................................... 134
PFAFF 1422: ............................................................................................................ 134-35
Fabric clearance:
PFAFF 422: ................................................................................................................ 7 mm
PAFFF 1422: .............................................................................................................. 9 mm
Clear workspace width: ......................................................................................... 252 mm
Clear workspace height: ............................................................................................... 110
Stitch length
PFAFF 422: .................................................................................................... 4.5 mm max.
PFAFF 1422: ..................................................................................................... 6 mm max.
Noise level at workplace
at a speed of 2,800 r.p.m.:....................................................................................80 dB (A)
Noise measurement according to DIN 456365-48-A-1
Net weight of sewing head:........................................................................... approx. 51 kg
Gross weight: ................................................................................................ approx. 59 kg
Maximum sewing speed
The maximum sewing speed depnds on the operation and on the material to be sewn.
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Specifications
3 - 2
3.02 Needle and thread
Selection of the correct needle depends on the machine model, the thread used and the
material
▲ or comparable sizes of other thread types
3.03 Possible work aids
Subclass -900/81..........................................................................................thread trimmer
Subclass -910/04..................................................................................... automatic foot lift
Subclass -911/35...................................................................................automatic backtack
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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 mat-
erials.
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
5.01 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. It must be ensured that the machines are only transported
in an upright position.
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 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
Fig. 7 - 01
7 Controls
7.01 On/off switch
●Switch machine on or off by turning on/-
off switch 1.
Fig. 7 - 02
7.02 Keys on machine head
●The keys on the machine head are pres-
sed to set off certain functions.
Key 1: Reverse sewing or intermediate
backtack within the seam
Key 2: Raise needle
2
1
O
1

Controls
7 - 2
7.03 Pedal
0= Neutral position
1= Sewing
2= Raise presser foot
3= Trim sewing threads
For other pedal functions
please refer to the instruction
manual of the motor
manufacturer.
Fig. 7 - 03
0
1
23
7.04 Knee lever
●The presser foot is raised by pressing
knee lever 1.
Fig. 7 - 04
1

Controls
7 - 3
Fig. 7 - 05
7.05 Presser bar lifter
●The presser foot is raised by turning
presser bar lifter 1.
Fig. 7 - 06
7.06 Feed regulator wheel
●The stitch length is set by turning
regulator wheel 1.
1
1

Controls
7 - 4
7.07 Reverse-feed control
●To sew in reverse, press reverse-feed
control lever 1.
Fig. 7 - 07
1

8 - 1
Installation and commissioning
Fig. 8 - 01
11
2
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
top that can hold 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 elec-
tric current.
It must be ensured that the standing surface of the machine site is firm and horizontal, and
that sufficient lighting is provided for.
For packing and transportation reasons the table top is in the lowered position.
The table height is adjusted as described below.
8.01.01 Adjusting the table height
●Loosen screws 1and 2and set the table height as required.
●Firmly tighten screw 1.
●Set the required pedal position and tighten screw 2.