ACE&EASTMAN Rh 981A Service I3080846H User Manual

2016-09-25

• RH-981A SERVICE MANUAL
• SAFETY INSTRUCTIONS
  • 1. Safety indications and their meanings
  • 2. Notes on safety
  • 3. Warning labels
• CONTENTS
• 1. MECHANICAL DESCRIPTIONS
  • 1-1. Upper and lower shaft mechanisms
  • 1-2. Needle bar mechanism
  • 1-3. Thread take-up mechanism
  • 1-4. Zigzag mechanism
  • 1-5. Needle bar rocking mechanism
  • 1-6. Feed mechanism
  • 1-7. Work clamp mechanism
  • 1-8. Cloth opener mechanism
  • 1-9. Cutter mechanism
  • 1-10. Looper mechanism
  • 1-11. Spreader mechanism
  • 1-12. Double chain stitch looper mechanism
• 2. DISASSEMBLY
  • 2-1. Covers and work clamp mechanism
  • 2-2. Feed mechanism
  • 2-3. Lubrication mechanism
  • 2-4. Looper and spreader mechanisms
  • 2-5. Needle bar rotating mechanism
  • 2-6. Looper base mechanism
  • 2-7. Needle bar, thread take-up, and zigzag mechanisms
  • 2-8. Knife pipe assembly
  • 2-9. Lower shaft mechanism
  • 2-10. Synchronizer mechanism
  • 2-11. Upper shaft mechanism
  • 2-12. Cutter mechanism
  • 2-13. Zigzag fork mechanism
• 3. ASSEMBLY
  • 3-1. Zigzag fork mechanism
  • 3-2. Cutter mechanism
  • 3-3. Upper shaft mechanism
  • 3-4. Lower shaft mechanism
    • 3-4-1. Adjusting the timing belt
  • 3-5. Upper thread trimmer mechanism
    • 3-5-1. Adjusting the thread trimmer lever hammer stroke
  • 3-6. Knife pipe and the knife bracket
  • 3-7. Driving gear shaft mechanism
  • 3-8. Needle bar, thread take-up, and zigzag mechanisms
    • 3-8-1. Eliminating end play of the thread take-up on the arm
    • 3-8-2. Applying grease to the ends of the thread take-up spring
    • 3-8-3. Eliminating end play of the needle bar driving lever
    • 3-8-4. Eliminating end play of the driving rod
    • 3-8-5. The strength to tighten the set screw of ball bearing 25/20
    • 3-8-6. Eliminating end play of the zigzag rock shaft
    • 3-8-7. Eliminating end play of the zigzag lever
    • 3-8-8. Attaching the needle bar yoke and the needle bar level feed link
    • 3-8-9. Attaching the needle bar bush U and the needle bar
    • 3-8-10.Eliminating end play of the needle bar block
    • 3-8-11.Adjusting the needle bar in the radial direction
    • 3-8-12.Attaching the needle bar block assembly
    • 3-8-13.Adjusting the height of the needle bar
  • 3-9. Looper base
  • 3-10. Needle bar rocking mechanism
    • 3-10-1. Driving looper shaft
    • 3-10-2. Needle bar rocking mechanism
  • 3-11. Looper and spreader machanisms
  • 3-12. Lubrication mechanism
    • 3-12-1. Machine head
    • 3-12-2. Driving gear shaft
  • 3-13. Feed mechanism
    • 3-13-1. X direction
    • 3-13-2. Y direction
    • 3-13-3. Attaching the X-feed guide shaft
  • 3-14. Synchronizer
  • 3-15. Covers and work clamp mechanism
  • 3-16. Safety switch
• 4. ADJUSTMENT
  • 4-1. Adjusting the work clamp lift height
  • 4-2. Adjusting the position of the work clamp plate
  • 4-3. Adjusting the cloth opening amount
  • 4-4. Adjusting the position of the work clamp
  • 4-5. Adjusting the X-axis home position
  • 4-6. Adjusting the Y-axis home position
  • 4-7. Adjusting 0 position (reference line) of the needle
  • 4-8. Adjusting the home position of the looper base
  • 4-9. Fine adjustment of knife position
  • 4-10. Adjusting the sideways movement of the cutter lever
  • 4-11. Adjusting the height of the throat plate
  • 4-12. Adjusting the height of the spreader and looper
  • 4-13. Adjusting the needle and looper timing
  • 4-14. Adjusting the loop stroke
  • 4-15. Adjusting the height of the needle bar
  • 4-16. Adjusting the clearance between the looper and needle
  • 4-17. Adjusting the needle guard
  • 4-18. Adjusting the spreader mounting positions
  • 4-19. Adjusting the spreader timing
  • 4-20. Adjusting the amount to pull the upper thread and tension release
  • 4-21. Adjusting upper thread trimming
    • 4-21-1. Adjusting the upper movable knife mounting position
    • 4-21-2. Adjusting the position of the thread trimmer lever bracket
  • 4-22. Adjusting the lower thread trimmer (-01 specification)
    • 4-22-1. Adjusting the knife pressure
    • 4-22-2. Adjusting the position of the thread trimmer arm
    • 4-22-3. Adjusting the thread clamp assembly and thread clamp opener
    • 4-22-4. Adjusting the thread handler
    • 4-22-5. Adjusting the thread guide plate
    • 4-22-6. Adjusting the amount to pull the lower thread required for thread trimming
    • 4-22-7. Adjusting the amount to pull the lower thread for safety stitching
    • 4-22-8. Adjusting the amount to pull the gimp
  • 4-23. Adjusting the lower thread trimmer (-02, -52 specifications)
    • 4-23-1. Adjusting the knife engagement
    • 4-23-2. Adjusting the knife pressure
    • 4-23-3. Adjusting the gimp pull force
    • 4-23-4. Adjusting the gimp tension
    • 4-23-5. Using gimp thread work clamp
    • 4-23-6. Adjusting the auxiliary clamp arm
    • 4-23-7. Adjusting the length of the lower thread to be pulled for a safe sewing start
  • 4-24. Adjusting the position of the lower thread presser (-02, -52 specifications)
  • 4-25. Adjusting the rotating centers of the needle bar and the looper base
  • 4-26. Adjusting the needle bar stop position
• 5. POWER SUPPLY EQUIPMENT
  • 5-1. Components inside the control box
  • 5-2. Fuse explanation
    • 5-2-1. Before replacing a fuse
  • 5-3. Connectors
    • 5-3-1. Connector positions
    • 5-3-2. Signal names for connectors and probable symptoms due to poor contact
  • 5-4. Specification harness connections
  • 5-5. Summary of DIP switches
    • 5-5-1. Panel DIP switches
    • 5-5-2. Circuit board DIP switches
  • 5-6. CHANGING FUNCTIONS USING THE MEMORY SWITCHES
    • 5-6-1. Memory switch table
  • 5-7. Sensors positions and funstions
• 6. AIR PRESSURE MECHANISM
  • 6-1. Solenoid valves and air tubes
    • 6-1-1. Adjusting the solenoid valve speed controllers
    • 6-1-2. Air tubes
  • 6-2. Air tube layout
• 7. SOFTWARE
  • 7-1. Motion flowchart
  • 7-2. Input check list
  • 7-3. Output check list
  • 7-4. List of error codes
  • 7-5. Troubleshooting
  • 7-6. Control circuit block diagram (1)
  • 7-7. Control circuit block diagram (2)
• COVER