The DDL-8700-7 is a high-speed, direct-drive, 1-needle lockstitch machine with an automatic thread trimmer․ This guide will provide you with instructions on setting up your machine, including unpacking and placement, connecting the power, attaching the pedal sensor, threading the machine, and basic adjustments․
Introduction
The JUKI DDL-8700-7 is a robust, high-speed, direct-drive lockstitch sewing machine designed for industrial applications․ This machine features an automatic thread trimmer, a new model control box, and a compact servomotor, ensuring efficient and high-quality sewing․ The DDL-8700-7 is suitable for a wide range of fabrics, from light to heavy-weight materials․ This setup guide provides detailed instructions to help you set up and operate your new machine, ensuring optimal performance and longevity․
Machine Overview
The DDL-8700-7 is a direct-drive, high-speed, 1-needle, lockstitch machine with an automatic thread trimmer․ It is designed to sew graceful, high-quality seams on many kinds of fabric․ The machine includes a throat plate with marker grooves for seam allowance guidance․ It also features a control box and operation panel for ease of use․ The DDL-8700-7 is a standard model of JUKI 1-needle lockstitch machines with an automatic thread trimmer․ It is available in two types, S-type and H-type, suitable for light- to medium-weight materials and heavy-weight materials, respectively․
Installation
Before setting up your DDL-8700-7 sewing machine, ensure you have two people to assist in safely handling the machine․ Carefully unpack the machine and its components, ensuring all parts are accounted for․ Choose a stable, level workspace free of any obstructions․ Connect the power cord to the designated outlet, ensuring the voltage matches the machine’s requirements․ Refer to the manual for specific instructions on installing the pedal sensor, which may involve mounting it on the table․
Unpacking and Placement
Begin by carefully unpacking your DDL-8700-7 sewing machine and its accompanying components․ Ensure all parts are present and accounted for, referring to the packing list if necessary․ Select a stable, level workspace that is free of any obstructions․ The workspace should be large enough to accommodate the machine and allow for comfortable operation․ Avoid placing the machine in direct sunlight or areas with extreme temperature fluctuations․
Connecting the Power
Before connecting the power, ensure the power switch is in the OFF position․ Locate the power cord and plug it into a grounded electrical outlet that meets the machine’s voltage and frequency requirements․ Refer to the machine’s specifications for detailed information․ Once plugged in, turn the power switch ON․ You should see the backlight of the operation panel illuminate․ If it doesn’t, immediately turn the power OFF and check the voltage․ Never operate the machine with a damaged power cord or if the electrical outlet is faulty․
Attaching the Pedal Sensor
The pedal sensor, included with your DDL-8700-7, controls the sewing machine’s speed․ It is typically installed on the table, and attaching it is a straightforward process․ Locate the mounting bolt assembly supplied with the machine․ Securely attach the pedal sensor to the table using the provided bolt assembly․ Next, route the pedal sensor cable through the designated cable draw-out hole on the table, ensuring it reaches the underside of the sewing machine table․ This step is crucial for proper operation and prevents the cable from becoming tangled or damaged․
Thread Setup
Threading the DDL-8700-7 involves two essential steps⁚ winding the bobbin and threading the machine․ Begin by winding the bobbin thread․ Insert the bobbin onto the bobbin winder spindle and pull the thread from the spool following the diagram provided․ Ensure the bobbin is securely in place before starting the winding process․ Once the bobbin is wound, thread the machine using the illustrated path․ Pay close attention to the thread guides and tension settings․ Proper threading is crucial for consistent sewing and prevents thread breakage and jams․
Winding the Bobbin
To wind the bobbin, first insert it deep into the bobbin winder spindle until it stops․ Next, pull the bobbin thread from the spool placed on the right side of the thread stand, following the indicated path․ Ensure the thread is properly guided through the tension spring, and the bobbin rotates in the direction of the arrow when pulling the thread․ Winding a bobbin is a crucial part of the thread setup process, as it provides the lower thread for your sewing․
Threading the Machine
Threading the DDL-8700-7 involves passing the thread through a series of guides and tensioners․ Start by threading the needle with the upper thread, ensuring it is correctly positioned in the needle clamp․ Then, guide the thread through the thread take-up lever, the thread guides, and the tension discs․ Next, move to the bobbin case, threading the bobbin thread through the slot, ensuring it passes under the tension spring․ Finally, pull the bobbin thread up through the needle hole․ A well-threaded machine ensures smooth and consistent stitching․
Basic Adjustments
After setting up your DDL-8700-7, it’s important to make a few basic adjustments to ensure optimal performance․ Start by adjusting the presser foot height using the presser foot adjustment screw․ This determines how much pressure the foot applies to the fabric during sewing․ Next, check the needle-to-hook relationship, which is crucial for consistent stitch formation․ Use the needle-to-hook timing adjustment screw to ensure the needle and hook engage at the correct moment․ These adjustments might require a bit of experimentation to find the ideal settings for your specific sewing needs․
Presser Foot Height
The presser foot height on your DDL-8700-7 sewing machine plays a crucial role in the quality of your stitches and the ease of sewing․ The presser foot applies downward pressure onto the fabric, ensuring it stays securely in place during the stitching process․ To adjust the presser foot height, locate the presser foot adjustment screw on the machine․ Turning this screw clockwise will increase the pressure, while turning it counterclockwise will decrease the pressure․ Experiment with different settings to find the ideal pressure for your fabric type and sewing project․
Needle-to-Hook Relationship
The needle-to-hook relationship is critical for the proper formation of stitches on your DDL-8700-7 sewing machine․ The hook is responsible for catching the needle thread and forming the loop that creates the stitch․ To adjust this relationship, locate the needle timing adjustment screw․ Turning this screw clockwise will advance the needle timing, while turning it counterclockwise will retard the timing․ A proper needle-to-hook relationship ensures smooth stitching and prevents skipped stitches or thread breakage․ Refer to your machine’s manual for specific instructions on adjusting the timing․
Operation
The DDL-8700-7 is designed for ease of use and efficient sewing․ To begin, press the ON button on the power switch to turn on the machine․ The operation panel will illuminate, allowing you to access various sewing functions․ You can adjust the sewing speed, stitch length, and select different stitch patterns using the built-in control panel․ The machine also features a reverse stitch function, which is useful for securing the beginning and end of seams․ For additional sewing functions, consult the instruction manual for your specific operation panel․
Starting the Machine
Before starting the DDL-8700-7, ensure that the power switch is turned off and the machine is properly set up․ To start the machine, press the ON button on the power switch․ The operation panel will illuminate, indicating that the machine is ready to sew․ The sewing speed will vary depending on the sewing conditions, but the preset sewing speed is 4,000 sti/min․ When operating the machine, avoid holding the handwheel as this can be dangerous․
Sewing Functions
The DDL-8700-7 features a variety of sewing functions that enhance its versatility․ These functions include reverse feed stitching, which can be programmed for both the beginning and end of a seam, and overlapped stitching, which allows for a more secure stitch pattern․ The machine’s built-in panel allows you to adjust the settings for these functions, providing greater control over your sewing․ The DDL-8700-7 also has a built-in thread trimmer, which automatically cuts the thread after sewing, making it easy to finish seams․
Troubleshooting
While the DDL-8700-7 is a reliable machine, there may be times when you encounter minor issues․ Common problems include thread breakage, skipped stitches, and uneven stitching․ Consult your instruction manual for troubleshooting steps, which may involve adjusting the thread tension, needle-to-hook relationship, or presser foot pressure․ If the problem persists, check the needle for damage or the bobbin case for proper threading․ Ensure the machine is properly lubricated and clean․ For more complex issues, contact a qualified sewing machine technician․
Maintenance
Regular maintenance is essential for keeping your DDL-8700-7 sewing machine in optimal condition․ Lubricate the machine with JUKI MACHINE OIL 7, focusing on the hook, needle bar crank, and other moving parts․ Follow the lubrication instructions provided in your manual․ Clean the machine regularly, removing any thread clippings or dust buildup․ Pay special attention to the feed dog mechanism, bobbin case, and needle plate․ Periodically inspect the needle and replace it as needed to ensure smooth sewing and prevent fabric damage․ Proper maintenance will extend the lifespan of your machine and ensure reliable performance․
Lubrication
Regular lubrication is crucial for maintaining smooth operation and extending the life of your DDL-8700-7 sewing machine․ Use JUKI MACHINE OIL 7 for lubrication, specifically designed for JUKI machines․ Apply oil to the hook, needle bar crank, and other moving parts as indicated in your user manual․ Ensure you apply the correct amount of oil to avoid excessive build-up, which can hinder operation․ Lubricate the machine after each 2,000 stitches or less, especially if you are working with heavy-duty materials․ Proper lubrication will prevent wear and tear, ensure smooth stitching, and minimize noise levels․
Cleaning
Regular cleaning is essential for maintaining the optimal performance of your DDL-8700-7 sewing machine․ Remove any lint, thread scraps, and dust build-up from the machine’s components․ Use a soft brush or a vacuum cleaner with a brush attachment for cleaning delicate parts․ Pay particular attention to the hook area, feed dog mechanism, and bobbin case․ Avoid using any harsh chemicals or solvents that could damage the machine’s parts․ Clean the machine after every sewing session or at least once a week, depending on the frequency of use․ Regular cleaning will ensure smooth operation, prevent malfunctions, and prolong the life of your machine․