Barudan BENS Series Embroidery Machine Maintenance Guide

1. Needles high likelihood

How to tell

Frequent thread breaks, skipped stitches, dull or bent needle points, poor stitch quality, or unusual noise during stitching.

Fix

1. Visually inspect the needle point for dullness, burrs, or bends.
2. Ensure the needle is inserted correctly and securely.
3. Replace the needle with a new, appropriate size and type for your material and thread. Always change needles after a certain number of hours or if any issues arise, even if they don't look visibly damaged.

Parts involved: Needles & needle bars →

2. Thread Path Components (Tension Discs, Thread Guides, Thread Support Clamps) high likelihood

How to tell

Thread fraying, inconsistent thread tension, frequent thread breaks, lint buildup, or visible grooves/burrs on guides or discs. Specifically, for Thread Support Clamps, thread slipping or incorrect tension application.

Fix

1. Inspect all thread guides, tension discs, and the thread support clamp for burrs, nicks, or excessive wear. Pay close attention to areas where the thread makes contact.
2. Clean any lint or debris from the tension discs and thread path.
3. If burrs are found, they can sometimes be polished with very fine sandpaper or a Dremel tool, but replacement is often the best solution for optimal performance.
4. Replace worn components. For Thread Support Clamps, use parts like ONLOYOY HT270022 Thread Support Clamp for BENSH YN/YS Barudan Embroidery Machines or HT270021 Thread Support Clamp 10pcs for Barudan YS Embroidery Machine if applicable to your BENS model.

Ensure to select the correct Thread Support Clamp model for your specific BENS machine variant.

Parts involved: Thread path & tension → Screws, springs & small parts →

3. Rotary Hook and Bobbin Case high likelihood

How to tell

Frequent thread breaks (especially bobbin thread), bird's nesting, poor stitch formation, loud noise from the hook area, or visible nicks/burrs on the hook point or bobbin case.

Fix

1. Remove the bobbin case and clean out any lint or thread buildup from the hook area.
2. Inspect the rotary hook point for damage, nicks, or dullness. Check the bobbin case for burrs or wear.
3. If damaged, replace the rotary hook and/or bobbin case. Ensure proper timing after replacement if the hook position is disturbed.
4. Lubricate the hook race as per your machine's manual.

Parts involved: Rotary hooks & bobbin cases →

4. Thread Trimmer Blades (Fixed and Moving) medium likelihood

How to tell

Inconsistent thread trimming, threads left too long or too short, frayed thread ends after trimming, or audible 'chewing' sound during trimming.

Fix

1. Carefully inspect both the fixed and moving trimmer blades for dullness, nicks, or damage.
2. Clean any lint or thread residue from the trimmer mechanism.
3. If blades are dull or damaged, replace them as a set (fixed and moving).
4. Ensure the trimmer mechanism is properly aligned and lubricated according to your machine's manual.

Parts involved: Cutters & trimmers →

5. Belts (Main Drive, X/Y Axis) medium likelihood

How to tell

Skipped stitches, inaccurate registration, unusual noises (squealing, grinding), visible cracks, fraying, or stretching on the belts. Loose belts can cause play in movement.

Fix

1. Visually inspect all drive belts for signs of wear, cracking, fraying, or excessive slack.
2. Check belt tension (refer to your machine's manual for proper tensioning).
3. If belts are worn or damaged, replace them. Ensure correct tensioning after replacement to prevent premature wear or operational issues.

Parts involved: Belts, pulleys & gears →

6. Floppy Drive / USB Floppy Emulator medium likelihood

How to tell

Machine failing to read designs from floppy disks or USB, 'disk read error' messages, slow data transfer, or intermittent recognition of media. For older floppy drives, mechanical noise or failure to eject/insert disks.

Fix

1. First, try a known good floppy disk or USB drive to rule out media issues.
2. Check connections to the floppy drive or emulator.
3. If using an emulator, ensure the USB drive is formatted correctly and contains compatible design files.
4. If the original floppy drive is failing, consider upgrading to a USB floppy emulator for improved reliability and convenience. Compatible options include Unbranded SFR1M44-DU26 USB Floppy Emulator 1.44MB, SFRM72-DU26 720KB USB Floppy Emulator (both low density and thin half-size variants), Richpeace SFDR-III U-B1.44 BENSH-YN USB Floppy Emulator, Gotek SFRM72-FU SFRM72-FU-EG Floppy Drive Emulator, or Barudan SFRM72-DU26 Gotek USB Floppy Drive Emulator.
5. Follow installation instructions carefully for any replacement or upgrade.

Many BENS machines use 720KB floppy drives, so ensure you select a compatible 720KB emulator if upgrading. Some models may use 1.44MB drives. Always verify your machine's specific requirements.

Parts involved: Floppy, USB & memory →

7. Display Driver Board / Control Panel low likelihood

How to tell

Flickering or blank display, unresponsive touch screen (if applicable), garbled characters on screen, or machine not booting up correctly. For the control panel, unresponsive buttons or complete failure of the interface.

Fix

1. Check all cable connections to the display and control panel.
2. Power cycle the machine.
3. If the display issues persist, the Display Driver Board may be faulty. The E831 Display Driver Board is a common replacement for Barudan BENS machines.
4. If the entire control interface is unresponsive, the control panel itself might need replacement. The Barudan BENYHE-ZQ-B04 NYHE-ZQ-B04 Automat Control Panel Box is available for N-Series BENS machines.
5. Replacement of these components often requires careful handling of electronics and may be best performed by an experienced technician.

Always ensure the replacement board or panel is compatible with your specific BENS model and series.

Parts involved: Circuit boards & electronics → Control panels & displays →