Pfaff 8304-020 User manual

INSTRUCTION MANUAL
296-12-18 418/002
Betriebsanleitung engl. 06.09
This instruction manual applies to machines from the
following serial numbers onwards:
# 11 031
8304 -020
Industrial
®

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 points for the user.......................................................................................... 1 - 2
1.05 Operating and technical personnel ................................................................................. 1 - 3
1.05.01 Operatingpersonnel ....................................................................................................... 1 - 3
1.05.02 Technicalpersonnel ....................................................................................................... 1 - 3
1.06 Dangerwarning ............................................................................................................. 1 -4
2Proper use .................................................................................................................... 2 -1
3Specifications .............................................................................................................. 3 - 1
4Disposal of the machine .............................................................................................. 4 - 1
5Transport, packing and storage .................................................................................. 5 - 1
5.01 Transport to the customer’s premises ........................................................................... 5 - 1
5.02 Transport within the customer’s premises ..................................................................... 5 - 1
5.03 Disposal of packing ....................................................................................................... 5 - 1
5.04 Storage .......................................................................................................................... 5 - 1
6Explanation of the symbols ........................................................................................ 6 - 1
7Controls........................................................................................................................7- 1
7.01 Main switch ..................................................................................................................7- 1
7.02 Foot switch ................................................................................................................... 7 - 1
7.03 Locking foot switch (optional) ........................................................................................ 7 - 2
7.04 Temperatureregulator/faultindicator............................................................................ 7 - 2
7.05 Status display of temperature control ............................................................................ 7 - 3
7.06 Regulator for drive roller start delay ............................................................................... 7 - 3
7.07 Regulator for heat-sealing speed.................................................................................... 7 - 4
7.08 Selection switch for operational modes ......................................................................... 7 - 4
7.09 Regulator for hot-air pressure (only on machines with hot-air) ....................................... 7 - 5
7.10 Regulatorfor feed rollerpressure ................................................................................... 7 - 5

Contents
Contents ................................................................................. Chapter - Page
8Installation and commissioning ................................................................................. 8 - 1
8.01 Installation ..................................................................................................................... 8 - 1
8.01.01 Adjusting the table height .............................................................................................. 8 - 1
8.01.02 Connecting the compressed air ..................................................................................... 8 - 2
8.02 Commissioning ............................................................................................................. 8 - 2
8.03 Switching the machine on/off ........................................................................................ 8 - 3
9Setting up ..................................................................................................................... 9- 1
9.01 Inserting the sealing tape............................................................................................... 9 - 1
9.01.01 Adjusting the tape reel bracket to the size of the tape reel ............................................. 9 - 1
9.01.02 Adjusting the tape width and the tape brake .................................................................. 9 - 2
9.02 Adjustingthepenetrationdepth ..................................................................................... 9 - 3
9.03 Feed rollers and hot-air pressure, heat-sealing temperature and speed .......................... 9 - 3
10 Heat sealing ................................................................................................................10 - 1
10.01 Heat-sealingprinciple ...................................................................................................10 - 1
10.02 Heat-sealing process ....................................................................................................10 - 1
11 Care and maintenance ................................................................................................11 - 1
11.01 Cleaning .......................................................................................................................11 - 1
11.01.01 Machines with hot wedge ............................................................................................11 - 1
11.01.02 Machines with hot-air nozzle ........................................................................................11 - 1
11.02 Check the air pressure..................................................................................................11 - 2
11.03 Draining the water bowl of the air filter/regulator/cleaning the filter ...............................11 - 2
11.04 Draining the water bowl of the fine filter/changing the fine filter ....................................11 - 3
11.05 Lubricating the drive chains ..........................................................................................11 - 4

Contents
Contents ................................................................................. Chapter - Page
12 Adjustment ..................................................................................................................12 - 1
12.01 Notesonadjustment ....................................................................................................12 - 1
12.02 Tools, gauges and other equipment ..............................................................................12 - 1
12.03 Hot-airnozzle ................................................................................................................12 - 2
12.03.01 Side and angle alignment of the hot-airnozzle ...............................................................12 - 2
12.03.02 Height adjustment and distance of the hot-air nozzle from the feed rollers ....................12 - 3
12.04 Adjusting the hot wedge ...............................................................................................12 - 4
12.04.01 Hot wedge crosswise to feed direction .........................................................................12 - 4
12.04.02 Height adjustment of the hot wedge .............................................................................12 - 5
12.04.03 Distance of the hot wedge to and its contact pressure on the feed rollers ....................12 - 6
12.04.04 Grindingthe hotwedge .................................................................................................12 - 7
12.05 Changingtheheating cartridge......................................................................................12 - 8
12.06 Changingthetemperatureprobe ...................................................................................12 - 9
12.07 Drive chains .................................................................................................................12 - 6
12.07.01 Tensioning the main drive chains..................................................................................12 - 10
12.07.02 Tensioning drive chain in bottom post and to top feed roller..........................................12 - 11
12.08 Fuses ...........................................................................................................................12 - 12
13 Circuit diagrams .........................................................................................................13 - 1

Safety
1 - 1
1 Safety
1.01 Regulations
This machine was built in accordance with the European regulations listed in the conformity
and manufacturer’s declarations.
In addition to this instruction manual, also observe all generally accepted statutory and other
regulations and legal requirements - including those of the country in which the machine will
be operated and all valid environmental-protection regulations. Regionally applicable
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 the
instruction manual has been completely read and understood !
●The danger and safety instructions on the machine itself are to be followed!
●The machine may only be used for the purpose for which it was intended and must not
be operated without its safety devices. Observe all relevant safety regulations!
●When replacing the feed rollers or the hot wedge, when leaving the workplace
unattended and during servicing or repairs, the machine must be switched off at the
mains switch and the plug pulled!
●Daily servicing work may be carried out only by appropriately trained personnel!
●Repairs and special maintenance work may be carried out only by technicians or persons
with appropriate training!
●Work on the electrical equipment may be carried out only by qualified electricians!
●Work is not permitted on live parts and equipment! Exceptions to this are contained in
the regulations EN 50110.
●Modifications and alterations to the machine may 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 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.

Safety
1 - 2
1.04 Important points for the user
●This instruction manual is a component part of the machine and must be available to
operating personnel at all times.
The instruction manual must be read before commissioning the machine.
●The operating and technical personnel are to be instructed as to the machine’s safety
mechanisms and with regard to safe working methods.
●It is the duty of the owner to operate the machine only when it is in perfect running order.
●The owner is obliged to ensure that none of the safety mechanisms are removed from
the machine or deactivated.
●When processing PVC, PTFE and similar materials, the user must ensure that the
maximum permissible level of toxic fumes is not exceeded.
●The user must make sure there is no high-frequency welding equipment being operated
in direct proximity to the machine that exceeds the EMC limit values according to
EN 60204-31 for the machine.
For further information please refer to the sales agency responsible.
1.03 Safety symbols
Danger!
Special points to observe.
Danger of hands being crushed!
Danger of burns from hot surface!
Danger from electric voltage!
o
o
o
o
Caution
Do not operate without finger guard and safety devices.
Turn off the main switch and let the machine cool
down before any setting up, maintenance or cleaning
work!

Safety
1 - 3
1.05 Operating and technical personnel
1.05.01 Operating personnel
Operating personnel are persons responsible for setting up, operating and cleaning the
machine as well as for eliminating any faults which may occur.
Operating personnel must observe the following:
●Always comply with the notes on safety in the instruction manual!
●Never adopt a working method which could have an adverse effect on the level of safety
in using the machine!
●Never wear loose-fitting clothing or jewelry such as chains or rings!
●Ensure that only authorized persons have access to the danger zone around the machine.
●Always report any changes in the machine, which may limit its safety, to the
immediately!
1.05.02 Technical personnel
Technical personnel are persons with special training in the fields of electrical/electronics
engineering and mechanics. They are responsible for the lubrication, maintenance and
repair of the machine.
Technical personnel must observe the following:
●always comply with the notes on safety in the instruction manual!
●switch the machine off at the main switch before carrying out servicing or repair work!
●never work on live parts and equipment! Exceptions are contained in the regulations EN
50110.
●replace the protective coverings after all repairs or maintenance work.

Safety
1 - 4
Do not operate the machine without the protective cover 1!
Danger of burns if the heating element 2is touched!
Do not put your fingers between protective cover 1and swivel unit 3!
Danger of crushing when swivel unit 3is swung in and out of place!
Fig. 1 - 01
12
3
1.06 Danger warning

Proper use
2 - 1
2 Proper use
The PFAFF 8304-020 is a heat-sealing machine with straight post, available both as the hot-
air or hot wedge model.
The purpose of the machines is to heat-seal flexible thermoplastic materials such as e.g.
protective covers, PVC-clothing, insulating and filter tubes, small tarpaulins and small tents,
motorbike seats etc.
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 inappropriate use of the machine!
Appropriate use of the machine presupposes the observance of all operational,
adjustment, maintenance and repair measures required by the manufacturer!