Pfaff 480 Series User manual
-900/97
-900/99
296-12-17612
Justieranleitung engl.06.95
Service Manual
for the series
480, 560 and 950
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 Service Manuals, whether in whole or in
part, is only permitted with our previous agreement and with written reference to the
source.
G.M. PFAFF
Aktiengesellschaft
Postfach 3020
D-67653 Kaiserslautern
Königstr. 154
D-67655 Kaiserslautern
Editing / Illustration
HAAS-Publikationen GmbH
D-53840 Troisdorf
Table of Contents
Contents ...............................................................................Chapter - Page
1Safety ..................................................................................................... 1- 1
1.01 General notes on safety ............................................................................................ 1-1
1.02 Safety symbols ......................................................................................................... 1 - 2
1.03 Danger .......................................................................................................................1- 2
2Adjustment ............................................................................................. 2- 1
2.01 Notes on the service manual .................................................................................... 2 - 1
2.02 Tools, gauges and other accessories........................................................................ 2 - 1
2.03 Abbreviations............................................................................................................. 2 - 1
2.04 Work symbols ........................................................................................................... 2 - 1
2.05 Lateral adjustment of the thread catcher ................................................................. 2 - 2
2.06 Front reversal point of the thread catcher ................................................................ 2 - 3
2.06.01 Setting for -900/97 ..................................................................................................... 2 -3
2.06.02 Setting for -900/99 ..................................................................................................... 2 -4
2.07 Knife to needle clearance (only -900/99) ................................................................... 2 - 5
2.08 Manual trimming control........................................................................................... 2 - 6
2.08.01 Control for -900/97..................................................................................................... 2 -6
2.08.02 Control for -900/99..................................................................................................... 2 -7
2.09 Needle thread tension release................................................................................... 2 - 8
2.10 Air blast dosage (only -900/97).................................................................................. 2 - 9
2.11 Positioner...................................................................................................................2-10
2.12 Mounting and dismounting the control unit .............................................................. 2 -11
2.13 Parameter settings.................................................................................................... 2 - 12
2.13.01 Parameter list (only -900/97) ..................................................................................... 2 - 12
Safety
1 Safety
1.01 General notes on safety
●This machine must only be operated by adequately trained operators and only after
having completely read and understood the Instruction Manual!
●All Notes on Safety and Instruction Manuals of the motor manufacturer are to be read
before operating the machine!
●The Danger and Safety Instructions on the machine itself are to be followed!
●The machine must be used only for the purpose for which it is intended and must not
be operated without its safety devices. Observe all relevant safety regulations!
●When exchanging sewing tools (e.g. needle, presser foot, needle plate, feed dog and
bobbin), when threading, when the workplace is left unattended and during servicing,
the machine must be disconnected from the mains by switching off the on/off switch
or by removing the plug from the mains!
●Daily servicing work must be carried out only by appropriately trained persons!
●Repairs and special maintenance work must only be carried out by technicians or
persons with appropriate training!
●For service or repair work on pneumatic systems the machine must be disconnected
from the compressed air supply. The only exceptions to this are adjustments and
function checks made by appropriately trained personnel!
●Work on the electrical equipment must be carried out only by electricians or
appropriately trained personnel!
●Work is not permitted on parts and equipment which are connected to the power
supply! Exceptions to this are contained in the regulations EN 50110!
●Modifications and alterations to the machine must only be carried out under
observance of all the relevant safety regulations!
●Only spare parts which have been approved by us are to be used for repairs! We
expressly point out that any replacement parts or accessories which are not supplied
by us have not been tested and approved by us. The installation and/or use of any such
products can lead to negative changes in the structural characteristics of the machine.
We shall not be liable for any damage which may be caused by non-original parts!
1 - 1
Safety
1.02 Safety symbols
Danger!
Points to be observed.
Danger of injury to operating and specialist personnel!
1.03 Danger
Do not reach into the sewing area while sewing!
Danger of injury caused by needle!
Do not leave any objects on the table or near the needle plate while carrying
out adjusting work. Objects can become jammed or be slung away! Danger
of injury!
In order to adjust this device, the machine must be tilted to the back.
Use both hands when returning the machine to an upright position!
Danger of crushing between sewing head and table top!
1 - 2
Adjustment
2 - 1
2 Adjustment
Please observe the safety instructions of this service manual and the notes
on safety in the instruction manual when carrying out any maintenance or
adjustment work.
On the 480 series no c-clamps may be attached to the needle bar as this
would damage the special coating on the needle bar.
Refer to the motor manufacturer’s instruction manual for the setting of the
cutting torque (180 min-1).
Depending on the machine model, the air pressure ranges between 4 and 6
bar.
2.01 Notes on the service manual
All adjustments in this service manual apply to a fully assembled machine. Machine
covers which have to be removed and replaced for checking and adjusting are not
mentioned in the text.
Screws and nuts mentioned in brackets () are to be loosened before making an adjustment
and tightened again afterwards.
2.02 Tools, gauges and other accessories
●Screw drivers with blade widths from 2 to 10 mm
●Wrenches with jaw widths from 7 to 14 mm
●Allan keys from 1.5 to 6 mm
●Metal rule, part no. 08-880 218-00
●Sewing thread and testing material
2.03 Abbreviations
TDC = top dead centre
BDC = bottom dead centre
2.04 Work symbols
Note, information
Servicing, repair, adjustment, maintenance
Adjustment
99-2-01
3
3
4
Fig. 2 - 01
●Disconnect the thread trimmer from the pneumatic network and dismantle the needle
plate and feed dog.
●Position the needle bar at BDC.
●Push aside catcher stop 1(screws 2).
●Position the tip of thread catcher 1in front of the needle by shifting the thread catcher
carrier.
●Adjust thread catcher 3(screws 4) laterally in accordance with requirement 1,
ensuring that the back of the thread catcher is horizontal.
Needle plate, feed dog and catcher stop 1stay dismantled for the following
adjustments. (Fig.2 -01 shows the hook race of -900/99)
2 - 2
3
1
2
-900/97
-900/99
2.05 Lateral adjustment of the thread catcher
Requirement
1. The tip of the thread catcher 3must point exactly to the centre of the needle.
2. The thread catcher 3should not touch anywhere when in motion.
Adjustment
2.06 Front reversal point of the thread catcher
2.06.01 Setting for -900/97
Requirement
At the front reversal point of the thread catcher 6, the needle should move through the
middle of the hole of thread catcher 6when the handwheel is turned.
2 - 3
97-2-02
●Position needle bar at TDC.
●Position end faces of piston rod 1and nut 2(nut 3) so that they are flush.
●Pull out piston rod 1manually as far as possible.
●Turn connecting rod 4(nuts 5, right-hand and left-hand thread) in accordance with the
requirement.
Fig. 2 - 02
6
5
4
1
3
2
5
Adjustment
99202
2.06.02 Setting for -900/99
Requirement
At the front reversal point of the thread catcher 6, the rear edge of the thread catcher
cutout should be positioned 1 to 1.5 mm in front of the front edge of the bobbin case
position finger 7.
2 - 4
●Position needle bar at TDC.
●Position end faces of piston rod 1and nut 2(nut 3) so that they are flush.
●Pull out piston rod 1manually as far as possible.
●Turn connecting rod 4(nuts 5, right-hand and left-hand thread) in accordance with the
requirement.
6
7
5
4
1
3
2
5
Fig. 2 - 03
1 - 1.5 mm
Adjustment
2-12
2.07 Knife to needle clearance (for -900/99)
21
1
●On needle-feed machines set the stitch length to O.
●Position the needle bar at BDC.
●Align knife 1(screw 2) in accordance with the requirement making sure that the right
edge of the knife does not protrude over the right edge of the thread catcher.
Fig. 2 - 04
Requirement
The distance between the front edge of the knife 1and the needle should be 4 mm.
2 - 5
4 mm
This manual suits for next models
2
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