S-7100A

S-7100A
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S-7100A

Product catalog summary
Introduction
This manual provides essential instructions for the safe and effective use of the Brother S-7100A sewing machine. It emphasizes the importance of thoroughly reading the manual and keeping it accessible for reference.
Safety Instructions
  • Indications and Symbols: Terms like 'DANGER', 'WARNING', and 'CAUTION' indicate hazard severity. Symbols denote actions to be taken or avoided.
  • General Safety: Wait five minutes after power-off before opening the control box to avoid high voltage injuries. Keep liquids away from the machine to prevent fire or electric shocks.
  • Environmental Requirements: Use the machine in environments free from strong electrical noise, with stable power supply voltage, and within specified temperature and humidity ranges.
  • Installation: Qualified technicians should perform installation. The machine weighs approximately 32 kg and requires two or more people for installation. Proper grounding is essential to prevent electric shocks.
  • Sewing and Maintenance: Only trained operators should use the machine. Protective goggles are recommended. Regular maintenance should be conducted by qualified personnel using genuine Brother parts.
Machine Specifications
The S-7100A is designed for light to heavy-weight materials with a maximum sewing speed of 5,000 stitches per minute. It features a quick reverse function, thread wiper, and adjustable presser foot height.
Installation and Setup
  • Installation: Detailed instructions are provided for setting up the machine, including table processing and lubrication.
  • Connecting Cords: Proper connection of power and other cords is crucial for safe operation.
Operation Panel
  • Basic Operations: Instructions on using the operation panel for starting and ending backtack stitches.
  • Advanced Operations: Includes setting sewing speed, counters, and adjusting needle positions.
Maintenance
Regular cleaning and replacement of parts like the fixed and movable knives are necessary to ensure optimal performance.
Troubleshooting
The manual provides a troubleshooting section for common sewing issues and error code displays.
Conclusion
Adherence to safety instructions and regular maintenance is essential for the safe and efficient use of the Brother S-7100A.
Safety Precautions
Ensure the table is secure to prevent movement when tilting the machine head. Use both hands to handle the machine head to avoid slipping. Avoid setting up the sewing machine near electronic devices to prevent interference. Plug the machine directly into an AC outlet.
Machine Setup and Installation
The table should be 40 mm thick and sturdy. Follow the provided diagram for drilling holes. Install the control box, oil pan, and connecting rod using specified bolts, nuts, and washers. Secure rubber cushions and head rests.
Lubrication
Lubricate the machine before first use and after long inactivity. Use protective gear when handling lubricating oil. Fill the oil tank to the upper reference line and be cautious of potential oil leaks.
Electrical Connections
Contact a qualified electrician for electrical work. Ensure all cords are connected before plugging in the power cord. Secure cords properly to avoid fire or electric shock risks. Ground connections must be secure.
Operation Panel - Basic Operations
The operation panel includes keys for setting stitch numbers and functions. Start and end backtack stitches can be set and adjusted using the panel keys.
Advanced Operations
Technicians can switch the 4-column display to show stitch numbers, sewing speed, or counter data using the SEL key.
Display Modes and Indicators
Various display modes and indicators include stitch number display, sewing speed display, and counter displays for lower thread, thread trimming, and needle replacement.
Setting Sewing Speed
The maximum sewing speed can be set by pressing the SEL key and adjusting the value using the A or B keys. The range is from 220 to 4000 stitches per minute.
Counter Settings
Instructions for setting and operating various counters: lower thread counter, thread trimming counter, and needle replacement counter.
Basic Function Settings
Instructions for setting basic functions such as needle stop position, correction sewing, and thread wiping.
Adjusting Needle Up Stop Position
The needle up stop position can be adjusted by entering a setting mode and using the C and D keys.
Resetting to Default Settings
If the machine malfunctions, settings can be reset to defaults by entering initialization mode.
Cleaning and Maintenance
Daily cleaning is recommended, including checking oil levels, replacing needles, and ensuring correct threading.
Replacing Knives
Replacement of fixed and movable knives should be performed by a qualified technician.
Specifications and Safety Precautions
Before replacing any parts, ensure the power cord is disconnected. Use only genuine Brother parts. Maintenance should be performed by qualified technicians.
Procedures for Knife Replacement
Fixed Knife: Tilt back the machine head, remove screws to detach the rotary hook stopper and fixed knife.
Movable Knife: Remove the needle and presser foot, then remove screws to detach the needle plate and movable knife.
Sharpening and Adjustments
Sharpen the fixed knife using a whetstone if cutting performance deteriorates. Adjust the arm thread guide, presser foot height, feed dog height, and angle.
Lubrication and Maintenance
Check and adjust the lubrication amount for the rotary hook. Regularly inspect and adjust the machine.
Troubleshooting
Common issues include thread tension problems, skipped stitches, and material slippage. Solutions involve adjusting thread tension, presser foot pressure, and ensuring correct needle and feed timing.
Troubleshooting Guide for S-7100A Sewing Machine
Thread Trimming Issues
  • Ensure the bobbin spins in the opposite direction to the rotary hook.
  • Do not exceed 80% thread winding on the bobbin.
  • Attach the anti-spin spring if not already attached.
  • Replace the bobbin if it does not turn smoothly.
  • Use only Brother-specified light-alloy bobbins.
Thread Breakage
  • Replace bent or broken needles.
  • Ensure the needle is installed correctly.
  • Check and correct the threading of the machine.
  • Adjust thread tension if too weak or strong.
  • Adjust the thread take-up spring if the upper thread is loose.
  • Repair or replace damaged parts like the rotary hook or feed dog.
Incorrect Thread Trimming
  • Replace damaged or worn fixed or movable knives.
  • Ensure the needle is installed correctly.
Machine Operation Issues
  • Ensure power supply connectors are securely connected.
  • Adjust sewing speed settings if the machine does not operate at high speed.
  • Check operation panel connections if the display is blank.
Error Code Displays
  • Follow specific instructions for each error code.
  • For errors not listed, contact the place of purchase.
General Recommendations
  • Regularly check and maintain machine components.
  • Follow safety precautions to avoid injury or damage.
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Catalog excerpts

S-7100A-1

INSTRUCTION MANUAL Please read this manual before using the machine. Please keep this manual within easy reach for quick reference. SINGLE NEEDLE DIRECT DRIVE STRAIGHT LOCK STITCHER WITH THREAD TRIMMER

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S-7100A-2

Thank you very much for buying a BROTHER sewing machine. Before using your new machine, please read the safety instructions and the explanations given in the instruction manual. With industrial sewing machines, it is normal to carry out work while positioned directly in front of moving parts such as the needle and thread take-up, and consequently there is always a danger of injury that can be caused by these parts. Follow the instructions from training personnel and instructors regarding safe and correct operation before operating the machine so that you will know how to use it correctly.

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S-7100A-4

SAFETY INSTRUCTIONS [1] Safety indications and their meanings This instruction manual and the indications and symbols that are used on the machine itself are provided in order to ensure safe operation of this machine and to prevent accidents and injury to yourself or other people. The meanings of these indications and symbols are given below. The instructions which follow this term indicate situations where failure to follow the instructions will result in death or serious injury. The instructions which follow this term indicate situations where failure to follow the instructions could result...

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S-7100A-5

AWait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before opening the cover of the control box. Touching areas where high voltages are present can result in severe injury. Do not allow any liquids to get onto this sewing machine, otherwise fire, electric shocks or operating problems may occur. If any liquid gets inside the sewing machine (machine head or control box), immediately turn off the power and disconnect the power plug from the electrical outlet, and then contact the place of purchase or a qualified technician. OUse the sewing...

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S-7100A-6

This sewing machine should only be used by operators who have received the necessary training in safe use beforehand. The sewing machine should not be used for any applications other than sewing. Be sure to wear protective goggles when using the machine. If goggles are not worn, there is the danger that if a needle breaks, parts of the broken needle may enter your eyes and injury may result. Attach all safety devices before using the sewing machine. If the machine is used without these devices attached, injury may result. A Do not touch any of the moving parts or press any objects against the...

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S-7100A-7

The following warning labels appear on the sewing machine. Please follow the instructions on the labels at all times when using the machine. If the difficult to read, please contact your nearest Brother dealer. labels have been removed or are Touching areas where high voltages are present can result in severe injury. Turn off the power before opening the cover. ^ CAUTION Be careful not to get your hands caught when returning the machine head to its original position after it has been tilted. Be careful to avoid injury from the moving thread take-up. Be sure to connect the ground. If the ground...

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S-7100A-8

Transformer box (100 V/400 V system only)

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S-7100A-12

2. INSTALLATION CAUTION Machine installation should only be carried out by a qualified technician. Contact your Brother dealer or a qualified electrician for any electrical work that may need to be done. The sewing machine weighs approximately 32 kg (70lb). The installation should be carried out by two or more people. Do not connect the power cord until installation is complete. The machine may operate if the treadle is depressed by mistake, which could result in injury. Secure the table so that it will not move when tilting back the machine head. If the table moves, it may crush your feet or...

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S-7100A-13

2-1. Table processing diagram ・ The top of the table should be 40 mm in thickness and should be strong enough to hold the weight and with-stand the vibration of the sewing machine. ・ Drill holes as indicated in the illustration below. Head rest hole Cotton stand hole Cord hole Control box mounting hole Control box Bolts [4 pcs] Nuts [4 pcs] Spring washers [4 pcs] Washers [4 pcs]

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S-7100A-14

Rubber cushions [2 pcs] Nails [4 pcs] Head cushions (left) [2 pcs] Head cushions (right) [2 pcs] 4. Machine head (1) Hinges [2 pcs] (2) Machine head (3) Head rest NOTE: ・ Bind the cords together and pass them through the cord hole ・ Tap the head rest (3) securely into the table hole. If the head rest (3) is not pushed in as far as it will go, the machine head will not be sufficiently stable when it is tilted back.

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S-7100A-15

5. Knee lifter plate 1. Turn the machine pulley so that the feed dog is below the top of the needle plate. 2. Lower the presser foot (1) by using the lifting lever (2). 3. Loosen the nut (3). 4. Turn the screw (5) to adjust so that the amount of play in the knee lifter is approximately 2 mm when the knee lifter plate (4) is gently pressed. 5. Securely tighten the nut (3). 6. Loosen the nut (6). 7. Turn the adjusting screw (8) to adjust so that the presser foot (7) is at the desired position within a distance of 13 mm of the needle plate when the knee liter plate is fully pressed. 8. After adjustment...

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S-7100A-16

CAUTION Do not connect the power cord until lubrication has been completed, otherwise the machine may operate if the treadle is depressed by mistake, which could result in injury. Be sure to wear protective goggles and gloves when handling the lubricating oil, so that it does not get into your eyes or onto your skin. If care is not taken, inflammation can result. Furthermore, do not drink the lubricating oil. Diarrhea or vomiting may result. Keep the oil out of the reach of children. When cutting the nozzle of the oil tank, hold the base of the nozzle securely. If you hold the end of the nozzle,...

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S-7100A-17

CAUTION Contact your Brother dealer or a qualified electrician for any electrical work that may need to be done. Do not connect the power cord until all cords have been connected. The machine may operate if the treadle is depressed by mistake, which could result in injury. When securing the cords, do not bend the cords excessively or fasten them too hard with staples, otherwise there is the danger that fire or electric shocks could occur. Be sure to connect the ground. If the ground connection is not secure, you run a high risk of receiving a serious electric shock, and problems with correct...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.