Leister Twinny T User Manual

LEISTER Twinny T
Combination wedge automatic
hot air welding machine
Please read operating instructions carefully before use and
keep for further reference.
GB
OPERATING INSTRUCTIONS
®
• Overlap max. 125 mm / 5 inch
• Type of seam Welding seams are produced in accordance with
DVS 2225 part I and BAM. Other dimensions are possible
on request
DVS: German Welding Association
BAM: Federal Institute for Materials Research and Testing, Berlin.
The LEISTER Twinny T is a combination wedge automatic hot air welding machine
for overlap welding and manufacturing of films and geomembrane liners in
tunnels as well as in earthwork and civil engineering. The heat transmission
occurs through optimum combination of contact and hot air.
APPLICATION
Type
Heating System
Civil engineering
Tunnel
construction
combination
wedge long
Type of Material Material Thickness
PE-HD, PE-C, PFA, PD, PP
PVC-P, PE-LD, ECB, EVA
0,8 – 2,0 mm
/ 32 – 80 mil
1,0 – 3,0 mm / 40 – 120 mil
tube nozzle
short
PE-HD, PE-C, PFA, PD, PP
PVC-P, PE-LD, ECB, EVA
0,3 – 1,0 mm
/ 12 – 40 mil
0,3 – 2,0 mm / 12 – 80 mil
LEISTER Process Technologies, Riedstrasse, CH-6060 Sarnen/Switzerland
Tel. +41 41 662 74 74 Fax +41 41 662 74 16 www.leister.com sales@leister.com

Leister Twinny T Specifications

General

Brand	Leister
Model	Twinny T
Category	Welding System
Language	English

Summary

Product Overview

Application Areas

Details the machine's use in tunnels, earthwork, and civil engineering.

Safety Warnings and Precautions

Danger Warnings

Highlights dangers like electric shock, fire, explosion, and burns from hot parts.

Cautionary Notes

Advises on voltage matching, RCCB use, supervision, and protection from moisture.

Technical Specifications and Approvals

Approval Marks

Lists relevant certification marks for the product.

Key Technical Data

Provides key technical specifications like voltage, power, frequency, and dimensions.

Machine Functionality

Heating System Operation

Explains stepless temperature adjustment and three heating zones.

Welding Pressure Mechanism

Describes pressure transmission via toggle lever and swivel head for equalisation.

Drive System Details

Details the double drive system, stepless adjustment, and constant speed.

Tool Components

Frontal View Identification

Illustrates and labels components visible from the front.

Back View Identification

Illustrates and labels components visible from the rear.

Welding Settings

Adjusting Welding Pressure

Details how to engage, position, and adjust welding pressure using levers and screws.

Welding Parameters and Preparation

Setting Welding Temperature

Explains how to set and adjust welding temperature using keys and display.

Setting Welding Speed

Describes how to set welding speed based on material and weather conditions.

Pre-Weld Preparation and Supply

Covers overlap cleaning, mains supply requirements, and cable specifications.

Welding Process Control and Monitoring

Operating Modes

Differentiates between Main-Level and Control-Level operation modes.

Fault Diagnosis

Explains overload indications and reasons for heating or drive faults.

Welding Procedure Steps

Initiating the Weld

Outlines checks, parameter adjustments, and engaging the machine.

Concluding the Weld

Details releasing the lever, disengaging the wedge, and switching off the machine.

Heating System Configuration

Long Combination Wedge

Describes application, material thickness, and heating zones for the long wedge.

Short Combination Wedge

Details application, material thickness, and capabilities of the short wedge.

Wedge Changeover Process

Steps for loosening, installing, aligning, and tightening the combination wedge.

Upper Drive Roller Assembly

Upper Roller Components

Lists and illustrates parts for changing the upper drive/pressure roller.

Lower Drive Roller Assembly

Lower Roller Components

Lists and illustrates parts for changing the lower drive/pressure roller.

Post-Purchase Support

Training and Accessories

Information on available welding courses and recommended accessories.

Maintenance and Service

Guidelines for cleaning parts, checking the cable, and authorized service.

Warranty Terms

Details the warranty period, exclusions, and conditions for claims.