Leister TWINMAT Operating Instructions Manual
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Leister TWINMAT Operating Instructions Manual

Leister TWINMAT Operating Instructions Manual

Automatic wedge welding machine
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OPERATING INSTRUCTIONS

GB
LEISTER TWINMAT
Automatic wedge welding machine
Please read operating instructions carefully before use
and keep for further reference.
APPLICATION
The LEISTER TWINMAT is an automatic wedge welding machine for overlap
welding of geomembrane liners for earthwork and civil engineering.
• Thermoplastic lining membranes
Polyvinyl chloride plasticised
Polyethylene high density
Polyethylene low density
Chlorinated polyethylene
Polypropylene
Ethylene copolymer bitumen
Ethylene vinyl acetate
DVS: German Welding Association
BAM: Federal Institute for Materials Research and Testing, Berlin
TWINMAT with printer
LEISTER Process Technologies, Riedstrasse, CH-6060 Sarnen / Switzerland
Tel. + 41- 41 662 74 74 Fax + 41- 41 662 74 16
• Type of seam
PVC-P
Welding seams are
PE-HD
produced in accordance
PE-LD
with DVS 2225 part 1 and
PE-C
BAM.
PP
Other dimensions are
ECB
possible on request.
E/VA
www.leister.com
2
sales@leister.com
®

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Summary of Contents for Leister TWINMAT

  • Page 1: Operating Instructions

    Please read operating instructions carefully before use and keep for further reference. APPLICATION The LEISTER TWINMAT is an automatic wedge welding machine for overlap welding of geomembrane liners for earthwork and civil engineering. • Thermoplastic lining membranes • Type of seam...

  • Page 2: Technical Data

    WARNING Danger to life when opening the tool, as live compo- nents and connections ar exposed. Unplug the tool before opening it. Incorrect use of hot air blowers can cause fire and explosion hazard, especially near combustible materials and explosive gases. Do not touch the element housing and nozzle when they are hot as they can cause burns.
  • Page 3 DESCRIPTION OF TOOL LEISTER TWINMAT 13 14 Detail B Detail A 1. Cord to mains 11. Handle 2. Cord holder 12. Carrying handle 3. Main switch 13. Printer 4. Hot air blower 14. Printer protection cover 5. On/off switch hot air blower 15.
  • Page 4 DESCRIPTION OF TOOL LEISTER TWINMAT Detail A Detail B Positioning of the hot air wedge Drive/pressure roller system 23 22 Heating system cross sectional diagram 28 29 Material plasticising Contact heating Pre-heating and with hot air cleaning of the membranes 22.
  • Page 5 DESCRIPTION OF TOOL LEISTER TWINMAT Display 1. Welding speed m/min. ACTUAL value 2. Welding speed m/min. NOMINAL value 3. Temperature ACTUAL value °C 4. Temperature NOMINAL value °C 5. Welding pressure ACTUAL value 6. Seam thickness reduction ACTUAL value Keyboard Drive motor on/off –...
  • Page 6 DESCRIPTION OF TOOL LEISTER TWINMAT System level START Basic display V – ACTUAL t – ACTUAL Welding pressure V – SET t – SET Seam thickness reduction Thickness Memory-Card of material ↵ ↵ ↵ ↵ – – Seam thickness Alarm...

  • Page 7: Print Out

    DESCRIPTION OF TOOL LEISTER TWINMAT Thickness of material Before welding, the operator must enter the thickness of the geomembrane material. The electronic processor requires this value to calculate the relevant seam thickness reduction. Depending on the material thickness, the range of seam thickness reduction is automatically adjusted on the print-out.
  • Page 8 DESCRIPTION OF TOOL LEISTER TWINMAT If the welding data needs to be stored on a memory Memory card card, before starting the welding process, the operator should set the memory card level to ON. (See special operating instructions for Memory Card).

  • Page 9: Descriptions Of Functions

    DESCRIPTIONS OF FUNCTIONS LEISTER TWINMAT • Heating system ¨ The hot air temperature is electronically steplessly adjusta- ble and electronically controlled for heating up the hot air wedge. Digital display of SET and ACTUAL value. The flexible hot air wedge has three heat zones: Pre-heating, contact heating, material plasticising with hot air.

  • Page 10: Description Of Functions

    The influence of weather such as sun, shade, wind and moisture, which cause a temperature change in the lining membrane during the welding process, can lead to weld faults. The TWINMAT speed control system interprets the data from the continuous measurement of the welding seam geometry. Through automatic adjustment of the welding speed, such weld faults are avoided.

  • Page 11: Welding Tips

    WELDING LEISTER TWINMAT • Check: – Drive/pressure rollers (28) (29) as well as the hot air wedge (20) – must be clean before beginning operation. – Required welding temperature must be achieved. – Cable length/cable guide. – Paper roll for printer.

  • Page 12: Maintenance

    • The automatic welding machine should be checked after about 1000 hours running time by your service centre (see page 9 Print-Out). • Repairs should only be carried out by authorised LEISTER Service Centres. They guarantee a correct and reliable repair service within 24 hours, using original spare parts in accordance with the circuit diagrams and spare parts lists.

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