Duerkopp Adler 271 User Manual

Contents Page:
Preface and General Safety Notes
Part 1: Operating Instructions Cl. 271 to 274
1. Product Description
1.1 Short Description and Proper Use . . . . . . . . . . . . . . . . . . . . . 5
1.2 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3 Optional Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2. Machine Elements and their Functions
2.1 Elements on the Machine Head . . . . . . . . . . . . . . . . . . . . . . . 8
2.2 Elements on the Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3. Operating
3.1 Needles, Threads and Thread Tension . . . . . . . . . . . . . . . . . . . 14
3.2 Spooling the Bobbin Thread . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.3 Replacing the Bobbin and Setting the Looper Thread Tension . . . . . . 15
3.4 Threading the Needle Thread . . . . . . . . . . . . . . . . . . . . . . . . 16
3.5 Regulating the Needle Thread Tension . . . . . . . . . . . . . . . . . . . 17
3.6 Thread Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4. Maintenance
4.1 Cleaning and Checking . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.2 Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Duerkopp Adler 271 Specifications

General

Type	Industrial Sewing Machine
Stitch Type	Lockstitch
Max Stitch Length	6 mm
Machine Type	Flatbed
Needle System	134
Motor	Servo motor
Feed System	Drop Feed

Summary

Product Description

Short Description and Proper Use

Describes the 271 to 274 sewing machines, their applications, and key features like lubrication and electro-magnetic operations.

Technical Data

Details technical specifications, stitch lengths, thread trimming, bartack functions, edge cutters, needle systems, and pressure requirements.

Optional Equipment

Lists various optional equipment for the sewing machines, such as thread wipers, edge cutters, and pneumatic devices.

Machine Elements and Functions

Machine Head Elements

Identifies and describes key elements on the machine head, including screws, levers, tension controls, and needles.

Frame Elements and Maintenance Unit

Details main switch, pedal functions, and maintenance unit components like air filter, water separator, and oil mister.

Sewing Machine Operation

Needles, Threads, and Thread Tension

Guidance on selecting needles, threads, and setting needle and looper thread tensions for optimal sewing results.

Bobbin Replacement and Looper Tension Setting

Explains bobbin removal/insertion and setting looper thread tension using brake and tension springs.

Needle Threading Procedure

Details the process of threading the needle thread, emphasizing tension-free unwinding and proper routing.

Needle Thread Tension Regulation

Describes adjustment of pre-tensioning and main tension for the needle thread to achieve correct sewing results.

Thread Regulator Adjustment

Explains thread regulator function and setting for controlling needle thread quantity based on stitch length and material.

Machine Maintenance

Cleaning and Checking Procedures

Outlines regular cleaning and checking, including dust removal from under needle plate, transporter web, and ventilation sieve.

Lubrication Guide

Details required lubricating oil and procedure for maintaining oil levels in reservoirs and maintenance unit.