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JUKI LU-2810 Series User Manual

JUKI LU-2810 Series
84 pages
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40133310
No. E407-00
ENGINEER’S MANUAL
LU-2810
Direct-drive, 1-Needle, Unison-feed Lockstitch Machine with a Vertical-axis Large Hook
LU-2810-7
Direct-drive, 1-Needle, Unison-feed Lockstitch Machine with a Vertical-axis Large Hook
with an Automatic Thread Trimmer
海外講習会用121122LU-2810(-7)EM

Table of Contents

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JUKI LU-2810 Series Specifications

General IconGeneral
Max Stitch Length9 mm
LubricationAutomatic
Max Sewing Speed2, 800 sti/min
Needle TypeDPx5
MotorServo Motor
Machine TypeLockstitch

Summary

PREFACE

TO ENSURE SAFE USE OF YOUR SEWING MACHINE

Explanation of Risk Levels

Details DANGER, WARNING, CAUTION risk levels for machine operation.

Pictorial Warning Indications and Labels

Explains various safety symbols and labels used in the manual and on the machine.

SAFETY PRECAUTIONS

Basic Precautions

General guidelines for safe machine operation and maintenance.

Safety Devices and Warning Labels

Importance of safety devices and keeping warning labels visible.

Application and Modification

Prohibits using the machine for unintended applications or modifications.

Education and Training

Emphasizes the need for trained operators to prevent accidents.

Power Off Requirements

Lists operations requiring the machine to be powered off for safety.

Transportation

Unpacking Procedures

Procedures for safely unpacking the sewing machine.

Installation Guidelines

Guidelines for installing the machine, including table, wiring, and grounding.

Pre-Operation Checks

Checks and precautions before starting the machine.

During Operation Safety

Safety measures to follow while the machine is operating.

Lubrication

Maintenance Procedures

Procedures for safe repair and maintenance of the machine.

Operating Environment

Recommended environmental conditions for machine operation.

PRECAUTIONS TO BE TAKEN IN VARIOUS OPERATION STAGES

Mechanical Components Precautions

Safety precautions for mechanical parts during transport, replacement, and adjustment.

PRECAUTIONS TO BE TAKEN IN VARIOUS OPERATION STAGES

Electrical Components Precautions

Safety precautions for electrical parts during transport, replacement, and adjustment.

Precautions for Safer LU-2800 Series Use

CAUTION BEFORE OPERATION

Critical Warnings Before Operation

Critical warnings and checks before operating the machine for the first time.

1. Specifications

2. Standard Adjustment

Needle Entry Position (Standard Gauge)

Standard adjustment for needle entry position in standard gauge type.

Needle Entry Position (Europe Gauge)

Standard adjustment for needle entry position in Europe gauge type.

Feed Dog Height Adjustment

Adjusting the height of the feed dog for proper feeding.

Hook Height Adjustment

Standard adjustment for the height of the hook.

Inner Hook Guide Adjustment

Procedures for adjusting the clearance and timing of the inner hook guide.

Needle-to-Hook Timing

Standard adjustment for needle-to-hook timing and hook needle guard.

(7) Lift of the Presser Foot

Hand Lifter Adjustment

Standard adjustment for the hand lifter mechanism.

Knee Lifter Adjustment (Without Trimmer)

Standard adjustment for the knee lifter mechanism.

Automatic Presser Foot Lifter (With Trimmer)

Standard adjustment for the automatic presser foot lifter.

(8) Feed Momentum

Alternate Momentum Adjustment

Standard adjustment for alternate momentum of the feed mechanism.

(9) Needle Sway (Bottom Feed Amount)

(10) Feed Cam Timing

Horizontal Feed Cam Timing

Standard adjustment for horizontal feed cam timing.

Vertical Feed Cam Timing

Standard adjustment for vertical feed cam timing.

Top Feed Cam Timing

Standard adjustment for top feed cam timing.

(11) Stitch Length of Forward/Reverse Feed

(12) Reverse Feed Control Lever Position

(13) Safety Clutch

(14) Balancer

(15) Reverse Feed Cylinder

(16) Lubrication

(17) Thread Trimmer Device

Counter Knife and Clamp Spring Position

Standard adjustment for the position of the counter knife and clamp spring.

Counter Knife Base Position

Standard adjustment for the position of the counter knife base.

Moving Knife Vertical Position

Standard adjustment for the vertical position of the moving knife.

Thread Trimmer Cam Timing

Standard adjustment for thread trimmer cam timing.

Thread Trimmer Cam Position

Standard adjustment for the position of the thread trimmer cam.

Knife Pressure Adjustment

Procedures for adjusting the knife pressure.

(18) Detection Switch for Alternate Vertical Movement

3. Portion to Which LOCKTITE is Applied

4. Selective and Consumable Parts

5. Applying Grease

Grease Application Procedure

General guidelines for applying grease periodically.

Greasing Points

Specific points for applying grease to the machine.

Greasing Point Indication Drawing

Diagram showing points where grease is applied at shipment.

6. Engraved Marker Dots on Handwheel

7. Lubrication Route Diagram

8. Machine Head Wiring (with Thread Trimmer)

Connectors from Machine Head to Control Box

Wiring details for connectors from the machine head to the control box.

9. Troubles and Corrective Measures

Troubleshooting: Sewing Issues

Troubleshooting guide for sewing-related issues like thread breakage and wear.

Troubleshooting: Thread Trimming Issues

Troubleshooting guide for thread trimming issues.

10. Drawing of Table

Table Drawing (Without Thread Trimming)

Technical drawing of the table for machines without thread trimming.

Table Drawing (For SC-922)

Technical drawing of the table for SC-922 model.

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