JUKI PLC-2700 Series Instruction Manual
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JUKI PLC-2700 Series Instruction Manual

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PLC-2700 Series
INSTRUCTION MANUAL

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Summary of Contents for JUKI PLC-2700 Series

  • Page 1 PLC-2700 Series INSTRUCTION MANUAL...

  • Page 2: Table Of Contents

    CONTENTS 1. SPECIFICATIONS ......................1 2. INSTALLATION ......................4 2-1. Installation of the sewing machine ....................4 2-2. Adjusting the belt tension (PLC-2710, 2760, 2760L, 2765) ............6 2-3. Pneumatic components ........................7 2-4. Attaching the belt cover (PLC-2710, 2760, 2760L, 2765) ............. 9 2-5.

  • Page 3: Specifications

    19 Thread trimming method 20 Lubrication Automatic lubrication by oil tank (with oil gauge) 21 Lubricating oil JUKI New Defrix Oil No. 1 (equivalent to ISO standard VG7) or JUKI MACHINE OIL No. 7 22 Bed size 643 mm × 178 mm 23 Space under the arm 347 mm ×...
  • Page 4 Cam-driven scissors type 20 Lubrication Automatic lubrication by oil tank (with oil gauge) 21 Lubricating oil JUKI New Defrix Oil No. 1 (equivalent to ISO standard VG7) or JUKI MACHINE OIL No. 7 22 Bed size 643 mm × 178 mm 23 Space under the arm 347 mm ×...
  • Page 5 19 Thread trimming method 20 Lubrication Automatic lubrication by oil tank (with oil gauge) 21 Lubricating oil JUKI New Defrix Oil No. 1 (equivalent to ISO standard VG7) or JUKI MACHINE OIL No. 7 22 Bed size 643 mm × 178 mm 23 Space under the arm 347 mm ×...

  • Page 6: Installation

    2. INSTALLATION 2-1. Installation of the sewing machine Carry the sewing machine with two persons. ❸ In the case of the sewing machine with a thread trimmer, loosen post cover mounting screws ❶ (three locations) to remove them. Remove post cover ❷.
  • Page 7 Attach a filter ❾ to the oil pan ❼ as shown in the Multi-layered part figure. Install filter ❾ so that its multi-layered part is brought to the right side as observed from you. Top surface ❾ ❼ Install hinge  on the bed with screw . Engage the hinge with the rubber hinge of the table.

  • Page 8: Adjusting The Belt Tension (Plc-2710, 2760, 2760L, 2765)

    Put reflux pipe  in the oil reservoir of oil pan ❼. Secure the pipe in groove . ❼ 10) Fix filter  and filter clamp  with fitting . 11) Mount spacers  supplied with the machine head on the frame. 12) Install bracket  on CP panel  with screws  supplied with the panel.

  • Page 9: Pneumatic Components

    2-3. Pneumatic components WARNING : To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work after turning the power off and ascertaining that the motor is at rest. (1) Installing the regulator ❺...
  • Page 10 (5) Piping of the air (PLC-2710, 2760, 2760L, 2765) (AK type) (AK/BT/DL type) CN152 CN151 CN153 AK (wire mark ⑩ ) AK (wire mark ⑩ ) DL (wire mark ⑥ ) BT (wire mark ⑧ ) Connect the air hose coming from the machine head to the position shown above while matching the number of the air hose and the number of the port.

  • Page 11: Attaching The Belt Cover (Plc-2710, 2760, 2760L, 2765)

    2-4. Attaching the belt cover (PLC-2710, 2760, 2760L, 2765) WARNING : To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work after turning the power off and ascertaining that the motor is at rest. ❹...

  • Page 12: Installing The Thread Stand

    2-5. Installing the thread stand WARNING : To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work after turning the power off and ascertaining that the motor is at rest. PLC-2760, 2760-7, 2760L, 2765 PLC-2710, 2710-7 ❶...

  • Page 13: Preparation Of The Sewing Machine

    3. PREPARATION OF THE SEWING MACHINE 3-1. How to set the model of the machine head • CP-18 Call Function Setting No. 95 in refer- ence to "III-6. Function Setting of SC-922" in the Instruction Manual for the SC-922. ❸ ❹...
  • Page 14 • CP-180 Refer to "18. FUNCTION SETTING SWITCH" in the Instruction Manual for the CP-180, and call the function setting No. 95. The type of machine head can be selected by pressing switch ❶. Select the type of the machine head according to the table given below.

  • Page 15: Adjusting The Machine Head (Plc-2710-7, 2760-7)

    3-2. Adjusting the machine head (PLC-2710-7, 2760-7) • CP-18 Simultaneously pressing switch ❹ and switch ❺, turn ON the power switch. is displayed A in the indicator and the mode is changed over to the adjustment mode. ❸ ❹ ❺ ❻...
  • Page 16 • CP-180 Simultaneously pressing switch ❶ and switch ❷, turn ON the power switch. ❶ ❷ is displayed A in the indicator and the mode is changed over to the adjustment mode. Turn the pulley of the machine head by hand until the main-shaft reference signal is detected.

  • Page 17: Installing The Detector (Plc-2710, 2760, 2760L, 2765; When The Option Kit Is Used)

    3-3. Installing the detector (PLC-2710, 2760, 2760L, 2765; when the option kit is used) Installing the detector mounting base Install detector mounting base ❶ on the main ❶ shaft of the sewing machine. Installing the detector support Remove the belt cover mounting screw. Install detector support shaft ❷.
  • Page 18 ・ Adjusting the upper stopping position Remove the cover of detector ❺. Turn upper position detecting plate  to adjust the upper stopping position of the sewing machine so that the machine stops when thread take-up lever  reaches its upper dead point. After the adjustment, install the cover of detector ❺.

  • Page 19: Opening/Closing The Hook Cover

    1. When you use a new sewing machine or a sewing machine after an extended period of disuse, use the sewing machine after performing break-in at 1,000 sti/min or less. 2. For the oil for hook lubrication, purchase JUKI NEW DEFRIX OIL No. 1 (Part No. : MDFRX1600C0) or JUKI MACHINE OIL No.7 (Part No. : MML007600CA).
  • Page 20 (2) Cleaning the oil filter ❺ ❹ ❶ ❻ ❷ ❸ Loosen fastening plate ❶ on the back-flow side. Remove oil filter joint (asm.) ❷ on the back-flow side. Clean up filters ❸, ❹ and ❺ and oil reservoir ❻ of the oil pan. Be sure to clean up the oil reservoir of the oil pan and the filter case approximately once a month.
  • Page 21 (4) Cleaning the hook lubrication filter (oil wick) Loosen lubrication connecting screw ❶ to remove ❶ Pull out pipe ❸ of lubrication connection joint ❷. Take out filter ❹ from lubrication connection joint ❷. Remove stains from filter ❹ or replace it with a new one.

  • Page 22: Attaching The Needle

    3-6. Attaching the needle WARNING : To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work after turning the power off and ascertaining that the motor is at rest. Switch "OFF" the motor. PLC-2710, 2710-7 Use 135x17 needles.

  • Page 23: Attaching And Removing The Bobbin

    3-7. Attaching and removing the bobbin WARNING : To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work after turning the power off and ascertaining that the motor is at rest. Lift latch ❶...

  • Page 24: Threading The Hook

    3-8. Threading the hook WARNING : To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work after turning the power off and ascertaining that the motor is at rest. [PLC-2710, 2760, 2760L] Pass the thread through thread path ❶...

  • Page 25: Winding A Bobbin

    3-9. Winding a bobbin Pass the thread through sections ❶ to ❹ in the numerical order. Insert the thread from the rear side of looper thread clamp ❺ and trim the thread. (The thread ❶ end is retained under the looper thread clamp.) Load a bobbin on bobbin winder shaft ❻.

  • Page 26: Threading The Machine Head

    3-10. Threading the machine head [PLC-2710, 2710-7] WARNING : To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work after turning the power off and ascertaining that the motor is at rest. ❶...
  • Page 27 [PLC-2760, 2760-7, 2760L] WARNING : To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work after turning the power off and ascertaining that the motor is at rest. ❶ ❶ Left-hand needle thread Right-hand...
  • Page 28 [PLC-2765] WARNING : To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work after turning the power off and ascertaining that the motor is at rest. ❶ ❶ Left-hand needle thread Right-hand needle thread ❷...

  • Page 29: Adjusting The Sewing Machine

    4. ADJUSTING THE SEWING MACHINE 4-1. Adjusting the stitch length Turn standard feed adjusting dial ❶ and 2P feed adjusting dial ❷ to align the desired number with marker dot ❸ on the machine dial. (1) Reverse feed stitching ❷ ❹...

  • Page 30: Thread Tension

    4-2. Thread tension (1) Adjusting the needle thread tension PLC-2710, 2710-7, 2760, 2760-7, 2760L PLC-2765 ❶ ❷ ❷ ❸ ❸ Turn thread tension nut No. 1 ❶ clockwise A to shorten the length of thread remaining on the top of needle after thread trimming.

  • Page 31: Thread Take-Up Spring

    4-3. Thread take-up spring WARNING : To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work after turning the power off and ascertaining that the motor is at rest. (1) When you want to change the stroke of the thread take-up spring PLC-2765 PLC-2710, 2710-7, 2760, 2760-7, 2760L ❷...

  • Page 32: Needle-To-Hook Relation

    4-4. Needle-to-hook relation WARNING : To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work after turning the power off and ascertaining that the motor is at rest. ❻ ❺ ❶...

  • Page 33: Adjusting The Hook Needle Guard

    4-5. Adjusting the hook needle guard WARNING : To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work after turning the power off and ascertaining that the motor is at rest. When a hook has been replaced, be sure to check the position of the hook needle guard.

  • Page 34: Position Of The Counter Knife And Adjustment Of The Knife Pressure

    Tighten setscrew ❺ while pressing down bob- bin case opening lever crank ❻ . Move inner hook guide ❶ up and down to make sure that there is not play in the thrust direction. ❻ In case of 2-needle machine, perform the same adjustment to the right and left hooks.

  • Page 35: Adjusting The Amount Of The Alternating Vertical Movement Of The Walking Foot And The Presser Foot

    4-9. Adjusting the amount of the alternating vertical movement of the walking foot and the presser foot Adjust the amount of the alternating vertical move- ment of the walking foot and the presser foot us- ❶ ing dial ❶ . Turn the dial clockwise to increase the amount of the alternating vertical movement of the walking foot and the presser foot, or counterclock- wise to decrease it.

  • Page 36: Operation Of The Sewing Machine

    5. OPERATION OF THE SEWING MACHINE 5-1. Hand lifter To lift the presser foot manually, pull hand lifter ❶ in the direction of the arrow. This makes the presser foot rise 10 mm and stay at that position. ❶ 5-2. Resetting the safety clutch WARNING : To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work after turning the power off and ascertaining that the motor is at rest.

  • Page 37: Fixing The Feed Adjusting Dial

    5-3. Fixing the feed adjusting dial Loosen feed regulating dial setscrews ❸ (or ❹ ). Push feed regulating dial ❶ (or ❷ ) in direction ❹ ❷ ❸ ❶ Notch ❺ of the dial fits on projecting sections ❻ of the cover to fix the dial so that it will not turn any further.

  • Page 38: Normal-/Reverse-Feed Stitch Needle Entry Points Alignment At The Time Of Automatic Reverse Feed Stitching

    5-4. Normal-/reverse-feed stitch needle entry points alignment at the time of automatic reverse feed stitching When the sewing speed or stitch pitch is changed, the normal- and reverse-feed stitch needle entry points may not be aligned at the time of automatic reverse feed stitching. In such a case, correct the alignment of needle entry points by changing the ON/OFF timing of the automatic reverse feed cylinder.

  • Page 39: Operation Switches (Plc-2710-7, 2760-7)

    5-5. Operation switches (PLC-2710-7, 2760-7) ❶ Alternating vertical movement amount change-over switch If this switch is pressed the amount of the al- ternating vertical movement of the walking foot and the presser foot will be maximized. (Lamp above the switch lights up) Use this switch when a multilayered portion of the sewing product is not smoothly fed.
  • Page 40 ❸ Needle lifting switch If this switch is pressed, the machine will travel from the needle-down stop position to the needle-up stop position. When raising the machine head which has been tilted, do not hold the operation switch to raise ❹...

  • Page 41: Organized Split Needle Bar (Plc-2765)

    5-6. Organized split needle bar (PLC-2765) (1) Stopping the needle bars (right and left) When conversion lever ❶ is moved to the L posi- tion, the left needle bar stops. When the lever is moved to the R position, the right needle bar stops. (2) Returning to the 2-needle operation Press conversion fixing lever ❷...

  • Page 42: Knee Switch (Plc-2710-7, 2760-7)

    5-7. Knee switch (PLC-2710-7, 2760-7) (1) Installation of the knee switch Black (No. 11) White (No. 4) White line ❷ Black line ❶ Cords of knee switch Fix knee switch ❶ supplied with the swing machine as accessories to the position you desire to install at the bottom surface of the machine table with wood screws ❷...
  • Page 43 (3) Function setting of the knee switch ・CP-18 ❶ ❷ ❸ ❹ Enter the function setting mode referring to "III-6. Setting of func- tions of SC-922, 1)" in the Instruction Manual for the SC-922. switch ❶ or switch ❷ to call out function setting Press No.12 (option input/output function selection).
  • Page 44 ・CP-180 ❶ ❸ ❷ Enter the function setting mode referring to "18. FUNC- TION SETTING SWITCH, 1)" in the Instruction Manu- al for the CP-180. Select function number 12 according to the function set- ting method. Select the item of " " by switch ❸ . Select the displayed number "...

  • Page 45: Sewing Speed Table

    6. SEWING SPEED TABLE Operate the sewing machine at a speed equal to or lower than the maximum sewing speed selected from those shown in the table below according to the sewing conditions. For the PLC-2710-7 and -2760-7, the speed setting according to the amount of the alternating vertical move- ment of the walking foot and presser foot is automatically carried out [PLC-2710, 2710-7, 2760, 2760-7, 2765] Amount of alternate vertical...

  • Page 46: Troubles In Sewing And Corrective Measures

    8. TROUBLES IN SEWING AND CORRECTIVE MEASURES Troubles Causes Corrective measures ① Thread path, needle point, hook blade point ○ Remove the sharp edges or burrs on the blade 1. Thread breakage (Thread frays or is or bobbin case resting groove on the throat point of hook using a fine emery paper.

This manual is also suitable for:

Plc-2710Plc-2760Plc-2710-7Plc-2760lPlc-2760-7Plc-2765

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