BAK Thermoplastic Welding Technology LARON Version 2 User manual

Operating instructions
Automatic welding machine Laron
BAK Thermoplastic Welding Technology
1
Machine type : LARON Version 2
Date : 09.05.2008
Serial no. :
echnical Data :
Voltage VAC 230 400
Frequency Hz 50/60 50/60
Power consumption heating up
controlled operation
W
W
4600
1750
5700
2200
Drive m/min 0,5 – 7 stepless 0,5 – 7 stepless
Welding temperature °C 30 – 620 stepless 30 – 620 steplesss
Air flow % 60 – 100 60 – 100
Size LxWxH mm 610 x 410 x 320 610 x 410 x 320
Weight kg 35 35
We retain all copyrights of all descriptions, drawings and schedules contained in
these operating instructions which may not be reproduced nor be made accessible by
third parties or by competitors, neither in whole nor in part, unless we have expressly
consented thereto.
Before start-up these operating instructions must be examined carefully because we
will not assume any liability for any failures resulting from improper use. No warranty
claims will be accepted if the automatic welding machine has been modified unless
this has been done in consultation with the manufacturer / supplier.

Operating instructions
Automatic welding machine Laron
BAK Thermoplastic Welding Technology
2
The tool can be used for the applications mentioned in the
present operating instructions only !
These operating instructions should always be accessible
by the operator.
For after sales service and orders please contact:
BAK hermoplastic Welding echnology AG
Birkenweg 3
CH-6056 Kägiswil/Switzerland
elefon: (0041) 041 6612250
elefax: (0041) 041 6612251
Safety:
Pursuant to sec. 55 of VDE 0 100 (Regulations of the Association of German
Electrotechnical Engineers), the automatic welding machine must be operated using
a protective switch or an isolation transformer.
Protect the tool from wet and humidity!!!!
Operating the automatic welding machine is subject to applicable national
regulations.
Observe applicable regulations for the prevention of accidents as well as technical
rules for safe and professional operation.
Directive 92/ 57/ EWG dated June 24, 1992, shall be applicable by analogy.

Operating instructions
Automatic welding machine Laron
BAK Thermoplastic Welding Technology
3
Utilisation:
he Laron is an automatic welding machine for overlap welding to weld
geomembranes (geomembranes width 20mm or 40mm). he machine must only be
used to weld geomembranes (PE, PVC, PO, ECB, EPDM, CSPE and bitumen) at
the edge and uneven surfaces.
Automatic welding machines are manufactured according to the latest technology
and in compliance with safety requirements.
Any improper use may result in dangers for the operator or third parties or may
adversely affect machines and assets.
Only use the automatic welding machine if in technically perfect condition and for the
purposes for which they are intended while observing the operating instructions.
For the neglect or for damages resulting from it the manufacturer / supplier will not
accept any liability .
Any utilisation of the automatic welding machine, for other purposes than those for
which it is intended, is subject to the consent of the manufacturer / supplier.
Work on electrical parts of welding machine may only be performed by an electrical
engineer in compliance with electro-technical rules.
Indication of special risks:
All automatic welding machines may only be held and operated using the handles
provided for this purpose.
A risk of burning exists on all uncovered metal parts. Avoid contact with these parts
as they may achieve temperatures of up to 650°C.
Attention: Heat can reach combustible materials which are hidden.

Operating instructions
Automatic welding machine Laron
BAK Thermoplastic Welding Technology
4
Safety area:
he hot air stream of the automatic welding machine may not be directed to
temperature-sensitive objects or living things. Ensure that a safety distance of 2 m is
observed in all directions . Do not point the hot air stream onto the same position for
a long time.
Security:
Before connecting the tool to the mains, check the rated voltage.
he mains voltage must correspond to the rated voltage shown on the tool plate.
Pursuant to sec. 55 of VDE 0 100 the automatic welding machine must be operated
using a protective switch or an isolation transformer.
Do not use the automatic welding machine if the connecting line or the plug is
damaged, repairs have to be done by the manufacturer or authorised service
personnel.
Extension cords:
When using extension cords the minimum diameter of cables must be observed.
Extension cords must be approved and marked for their place of utilisation.

Operating instructions
Automatic welding machine Laron
BAK Thermoplastic Welding Technology
5
Stop operating the automatic welding machine if:
- connecting line or plug have been damaged
- safety installations have been damaged
- changes occur in the operating state
o separate the automatic welding machine from the electric system, change the
main switch to “OFF” und unplug the mains plug.
Never spray water on automatic welding machine
(risk of short circuit)
Never use the automatic welding machine in hazardous or
inflammable areas.
Do not leave the tool unobserved !!!
Attention: Let the automatic welding machine cool down
before packing.

Operating instructions
Automatic welding machine Laron
BAK Thermoplastic Welding Technology
6
Before operating the machine examine the tool adjustment.
Basic adjustement:
Proceed with adjustments only in cold condition (burn danger!).
Nozzle adjustment:
- Changes of the nozzle adjustments can be done if screws are loosen
- For recommended settings use the following sketch
2,5
42-45

Operating instructions
Automatic welding machine Laron
BAK Thermoplastic Welding Technology
7
Guide roller adjustment:
- Bring the automatic welding machine into the welding position.
- Push the transport roller to the right in welding position
take care that the spring sheet engages.
- push the guide roller downward and fix it with the hexagon nut on the
threaded bar.
Outside edge of the overlap, outside edge of pressure roll and
outside edge of guide roller must form a line.
(see following sketch).

Operating instructions
Automatic welding machine Laron
BAK Thermoplastic Welding Technology
8
Start up of the automatic welding machine
Observe the section concerning safety of these operating instructions.
Before connecting the tool to the mains supply please check that:
- he main switch is on Pos. 0 OFF
- Drive switch is on Pos. 0
- Heating switch is on Pos. 0
- Potentiometer of the air flow is on Pos. 0 (100%)
- he hot air blower is on Pos. stand by (lifted up)
- Put the plug is into the socket and put the main switch on pos. 01
Switch the heating switch on.
he tool now heats up to the last selected set temperature.
o change the set temperature check the section of the controller adjustment.
Controller adjustment:
Actual temperature
Upward button Downward button
Temperature unit
Set temperature

Operating instructions
Automatic welding machine Laron
BAK Thermoplastic Welding Technology
9
Select on the potentiometer the desired welding speed.
On switching position ON the drive starts immediately and is constantly running.
On switching position AU O the drive starts only after sliding the nozzle
into the welding seam and stops immediately after taking out the nozzle.

Operating instructions
Automatic welding machine Laron
BAK Thermoplastic Welding Technology
10
DV 070
DV 089
DV 085
DV 086
DV 084
DV 159
DV 088