1. Introduction
This manual provides detailed instructions for the assembly, operation, and maintenance of your VEVOR DDL8700 Industrial Lockstitch Sewing Machine. Please read this manual thoroughly before initial use to ensure safe and efficient operation. This machine is designed for industrial use, suitable for medium-thick materials up to 5 mm, and features a servo motor for precise control.
Figure 1: VEVOR Industrial Sewing Machine in various application settings, highlighting its versatility in tailor shops, boutiques, bridal shops, and home use.
2. Safety Instructions
- Always disconnect the machine from the power supply before cleaning, servicing, or when not in use.
- Keep fingers away from the needle, presser foot, and handwheel during operation.
- Do not operate the machine with damaged cords or if it has been dropped or damaged.
- Ensure proper lighting in your work area.
- Keep children and pets away from the machine during operation.
- Use only recommended accessories and attachments.
3. Package Contents
Your VEVOR DDL8700 Industrial Lockstitch Sewing Machine package includes the following components:
- Sewing Machine Head
- Table Stand
- Servo Motor (550W)
- LED Lamp
- Thread Stand
- Belt
- Bobbin Winder Assembly
- Needles (DB x 1 11#, 14#, 16#)
- Various screws and small parts for assembly
4. Setup and Assembly
The VEVOR DDL8700 requires assembly of the table stand, motor, and machine head. Follow these steps carefully.
4.1. Table Stand Assembly
Assemble the table stand according to the diagrams provided with your packaging. Ensure all bolts are securely tightened for stability.
4.2. Machine Head Installation
Carefully place the sewing machine head into the designated opening on the table. Secure it using the provided screws and mounting hardware.
4.3. Servo Motor and Belt Installation
Install the servo motor beneath the table. The motor is connected to the machine head via a belt. Use the adjuster to ensure the belt is taut but not overly tight, allowing for smooth operation.
Video 1: This video demonstrates the installation of the servo motor and the drive belt, including how to adjust the belt tension for optimal machine performance. It also shows the bobbin winder installation and initial testing of the machine's basic functions.
4.4. Bobbin Winder Installation
Attach the bobbin winder assembly to the machine table. Ensure it is positioned correctly to engage with the machine's handwheel for efficient bobbin winding.
Figure 2: The automatic winding stand, designed for easy installation with pre-drilled holes, supports efficient thread management.
4.5. Threading the Machine
Follow the threading path indicated on the machine. This typically involves guiding the thread through the thread stand, tension discs, take-up lever, and finally through the needle. Ensure the bobbin is correctly inserted into the bobbin case.
Figure 3: Overview of the VEVOR 1-Needle Lockstitch Machine, emphasizing its design for fast threading, stitch adjustment, and foot pedal operation.
5. Operation
5.1. Basic Sewing
With the machine threaded and powered on, place your fabric under the presser foot. Lower the presser foot using the knee lifter (standard 10 mm lift, maximum 13 mm). Gently press the foot pedal to begin sewing. The servo motor provides precise speed control.
Figure 4: Detail of the presser foot lift mechanism, indicating standard 10mm and maximum 13mm lift for professional straight sewing.
5.2. Stitch Length Adjustment
The machine allows for stitch length adjustment up to a maximum of 5 mm. Use the stitch dial on the machine head to select your desired stitch length. Refer to the product structure diagram for the location of the tension device and handwheel.
Figure 5: The stitch adjustment button, allowing for precise control of stitch length from 0 to 5 mm.
5.3. Bobbin Winding
To wind a bobbin, place an empty bobbin onto the bobbin winder spindle. Guide the thread from the spool through the tension disc of the winder. Engage the winder with the handwheel and operate the machine at a moderate speed until the bobbin is full.
6. Maintenance
Regular maintenance ensures the longevity and optimal performance of your sewing machine.
6.1. Cleaning
Periodically clean lint and thread debris from the bobbin area, feed dogs, and tension discs. Use a soft brush or lint remover. Disconnect power before cleaning.
6.2. Lubrication
The machine requires regular lubrication. Refer to the oil sight window on the machine head to monitor oil levels. Use #10 White Oil as specified. Consult a professional for detailed lubrication points if unsure.
Figure 6: Product structure diagram, indicating the location of the oil sight window, tension device, handwheel, automatic winding device, stitch dial, presser foot, and servo motor.
7. Troubleshooting
If you encounter issues with your machine, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Skipped Stitches | Incorrect needle, bent needle, improper threading, incorrect tension. | Replace needle with correct type/size, re-thread machine, adjust tension. |
| Thread Breakage | High tension, poor quality thread, burrs on needle plate, incorrect needle. | Reduce tension, use quality thread, check for burrs, replace needle. |
| Uneven Stitches | Incorrect tension, worn feed dogs, improper presser foot pressure. | Adjust tension, clean feed dogs, adjust presser foot pressure. |
| Machine Not Starting | Power supply issue, motor connection, safety switch engaged. | Check power cord, ensure motor is connected, disengage safety switch. |
For complex issues or repairs, it is recommended to contact a qualified technician or VEVOR customer support.
8. Specifications
| Feature | Detail |
|---|---|
| Type | Industrial Sewing Machine |
| Model Number | DDL8700 |
| Power | 550W |
| Max Stitch Length | 5 mm |
| Needle Type | DB x 1 11#, 14#, 16# |
| Sewing Speed | 0-3500 s.p.m (stitches per minute) |
| Presser Foot Lift (Standard) | 10 mm |
| Presser Foot Lift (Maximum) | 13 mm |
| Lubricating Oil | #10 White Oil |
| Material Thickness | Medium Material |
| Product Dimensions | 32 x 20 x 54 inches (81.28 x 50.8 x 137.16 cm) |
| Item Weight | 166 pounds (75.3 kg) |
| Power Source | AC/DC |
Figure 7: Detailed dimensions of the VEVOR Industrial Sewing Machine, including length, width, and height.
9. Warranty and Support
For warranty information, technical support, or to inquire about replacement parts, please contact VEVOR customer service directly. Refer to the official VEVOR website or your purchase documentation for contact details.
