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JUKI LK-1900AN User Manual

JUKI LK-1900AN
140 pages
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40111443
No. E402-00
ENGINEER’S MANUAL
LK-1900AN Series
Computer-controlled High-speed
Bartacking Machine

Table of Contents

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JUKI LK-1900AN Specifications

General IconGeneral
Stitch TypeLockstitch
Motor Power550 W
TypeLockstitch sewing machine
Stitch LengthMax. 5mm
Needle TypeDPx5
HookFull rotary hook
Presser Foot Lift13 mm

Summary

Safe Use Guidelines and Risk Identification

Explanation of Risk Levels

Defines DANGER, WARNING, CAUTION levels for risk indications.

Pictorial Warning Indications and Labels

Explains various warning labels and pictorial indications used in the manual.

Comprehensive Safety Precautions

General Safety, Device, and Training Precautions

Covers basic precautions, safety devices, application limits, and operator training.

Operational Safety Procedures

Safe Operation During Use

Guidelines for safe practices while the machine is operating.

Maintenance and Environmental Considerations

Precautions for Specific Maintenance Stages

General Safe Operation Guidelines for LK-1900AN Series

Identification of Safety Devices and Warning Labels

3. Standard Adjustment Procedures: Mechanical Components

Main Shaft and Motor Adjustments

Covers main shaft connection, wheel position, motor, and coupling adjustments.

Crank, Shaft, and Oscillator Adjustments

Details adjustments for crank rod, balancer, lower shaft, oscillator, and hook oil.

Trimmer, Sensor, and Knife Adjustments

Covers adjustments for shuttle, needle bar, hook, trimmer, sensors, knives, tension, and AT unit.

Feed, Origin, and Motor/Wiper Adjustments

Adjustments for mechanical origin, sensors, motors, and wiper systems.

Winding, Clamp, and Spring Adjustments

Covers bobbin winder, shuttle spring, felt, hook presser, take-up spring, and needle clamp.

Needle Thread Clamp Device Connection/Disconnection

Procedures for disassembling the needle thread clamp device.

Needle Thread Clamp Sensor Adjustment

Standard adjustment for the needle thread clamp sensor.

Needle Thread Clamp Notch Adjustment

Standard adjustment for needle thread clamp notch R and F positions.

5. Memory Switch Settings

6. Test Mode Operations

Initiating Test Mode

Instructions on how to start and select test modes on the machine.

9. Maintenance Procedures

9. Maintenance Procedures

Grease-Up Procedures for Specified Positions

Details procedures for greasing specific positions, including error code E220/E221.

10. Error List and Corrective Actions

11. Troubles and Corrective Measures: Mechanical Issues

Mechanical Part Troubles and Solutions

Lists mechanical troubles, their causes, and corrective measures.

11. Troubles and Corrective Measures: Sewing Condition Issues

Sewing Condition Troubles and Solutions

Covers issues with sewing conditions, thread breakage, trimming, and stitch quality.

11. Troubles and Corrective Measures: Thread Issues

Thread Breakage Troubles and Solutions

Lists troubles related to thread breakage, causes, and corrective measures.

Defective Thread Trimming and Solutions

Lists troubles related to defective thread trimming, causes, and corrective measures.

11. Troubles and Corrective Measures: Stitch Quality Issues

Poorly Tense Stitches and Solutions

Lists troubles related to poorly tense stitches, causes, and corrective measures.

11. Troubles and Corrective Measures: Synthetic Thread Issues

Synthetic Thread Stitch Defects and Solutions

Lists troubles related to synthetic thread stitches, causes, and corrective measures.

11. Troubles and Corrective Measures: Electrical Issues

Electrical Component Troubles and Solutions

Lists electrical component troubles, causes, and corrective measures.

Electrical Component Troubles and Solutions (cont.)

Continues listing electrical component troubles, causes, and corrective measures.

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