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Unicorn LT5-H7600-D-N Series Operation Manual

Single / twin needle direct drive roller feed post bed lockstitch sewing machine with thread trimmer
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Summary of Contents for Unicorn LT5-H7600-D-N Series

  • Page 2: Table Of Contents

    Contents Operation declaration 1. Specifications ..........................2 2. Installation ............................3 3. Controls ............................8 4. Preparation ............................ 12 5. Care and maintenance ........................ 17 Parts list .............................. 21 1. Housing sections ........................... 22 2. Needle head parts ........................23 3.

  • Page 3: Operation Declaration

    OPERATION DECLARATION...

  • Page 4: Specifications

    1. Specification Stitch type ........................301(Lockstitch) Clearance under roller presser....................7mm Clearance width ........................245mm Clearance height ........................115mm Post height ..........................180mm Sewing head dimensions Length .......................... approx..615mm Width ..........................approx..240mm Height(above table) ....................approx..500mm Bedplate dimensions ....................518 X 177mm Type Single needle and double needle Model A ...................

  • Page 5: Installation

    2. Installation The site where the machine is installed must be provided with suitable connections for electric current. It must be ensured that the standing surface of the machine site is firm and horizontal, and that sufficient lighting is provided for. 2.
  • Page 6 2. 02 Fitting the tilt lock Switch off the machine; Screw on the tilt lock 1, provided in the accessories, using screw 2. Note : Do not operate the machine without tilt lock 1! Danger of crushing between sewing head and table top! 2.
  • Page 7 2. 04 Mounting the flange motor Attach bearing plate 1 to motor 2 with screws 3 as shown in Fig.; Remove the wedge from motor shaft 4; Attach angle bracket 5 with screws 6; Fit toothed belt wheel 7 to the motor shaft 4, so that the point of the screw is located in the groove of the motor shaft;...
  • Page 8 2. 06 Mounting the toothed belt and adjusting the tension In this position fit toothed belt 1; Swing the bearing plate 2 of the motor, so that the toothed belt is tensioned; In this position tighten screws 3. 2. 07 Mounting the belt guard of the flange motor Attach belt guard 1 with screws 2 and 3.
  • Page 9 2. 08 Connecting the safety switch Connect plug 1 of safety switch in Fig. 2. 09 Fitting the reel stand Fit the reel stand as shown in Fig.; Afterwards insert the stand in the hole of the table top and secure it with the nuts provided.

  • Page 10: Controls

    3. Controls 3. 01 Keys on the machine head As long as key 1 is pressed during sewing, the machine sews in reverse; Keys 2 can be used for parameter settings, Instruction Manual of Electronic Control. 3. 02 Bobbin thread monitoring with stitch counting About 100 stitches before reaching the preset number of stitches, diode 1 flashes;...
  • Page 11 3. 03 Pedal 0 = Neutral position +1 = Sewing -1 = Raise roller presser -2 = Trim sewing threads 3. 04 Lever for lifting roller presser The roller presser can be raised by turning lever 1.
  • Page 12 3. 05 Knee lever The roller presser can be raised by pressing the knee lever 1 in the direction of the arrow. 3. 06 Key for setting stitch length The stitch length is set by pressing key 1 and turning the balance wheel.
  • Page 13 3. 07 Swing out roller presser When the roller presser is raised, it can be swung out by pulling it lightly down-wards.

  • Page 14: Preparation

    4. Preparation All instructions and regulations in this instruction manual must be observed, special attention must be paid to all safety regulations; All setting-up work must only be carried out by personnel with the appropriate training ; For all setting-up work the machine must be disconnected from its power supply by turning off the on/off switch, or removing the plug from the electric power socket.
  • Page 15 4. 02 Winding the bobbin thread, adjusting the thread tension. Place an empty bobbin 1 onto bobbin shaft 2; Thread the bobbin in accordance with Fig. And wind it anti-clockwise around bobbin 1 a few times; Switch on the bobbin winder while at the same time pressing bobbin winder spindle 2 and lever 3.
  • Page 16 4. 03 Removing/Inserting the bobbin case Removing the bobbin case: Open the post cap; Raise latch 1 and remove bobbin case 2. Inserting the bobbin case: Insert bobbin case 2; Close the latch 1 and close the post cap. 4. 04 Threading the bobbin case/Adjusting the bobbin thread tension Insert the bobbin into the bobbin case;...
  • Page 17 4. 05 Threading the needle thread and regulating its tension on the single needle machine on model single needle. Tilt up the eye guard 1; Thread the needle thread as shown in Fig.; On model left hook the needle is threaded from the right to the left, and on model right hook from the left to the right;...
  • Page 18 4. 06 Threading the needle thread and regulating its tension on the single needle machine on model double needle. Tilt up the eye guard 1; Thread the needle thread as shown in Fig.; The left needle is threaded from the right to the left, and the right needle from the left to the right;...

  • Page 19: Care And Maintenance

    4. 07 Setting the stitch length Press key 1 and at the same time turn the balance wheel until the stitch setter clicks into position; Hold down key 1 and turn the balance wheel to and fro until the stitch length required is shown on the scale 2 opposite the bottom edge 3 of the belt guard recess.
  • Page 20 5. 01 Cleaning Clean the hook, hook compartment and toothed wheel 3 every day, several times if in continuous use. Bring the needle bar to its highest position; Open the post cap and remove the bobbin case cap and the bobbin; Unscrew hook gib 1;...
  • Page 21 5. 03 Oil bowl for hook lubrication Check the oil level before each use, there must always be oil in reservoir 1. If required refill oil through hole. Use only oil with a mean viscosity of 22.0mm at 40℃ and a density of 0.865g/cm at 15 ℃.
  • Page 22 5.05 Lubricating the bevel gears Switch the machine off ! All bevel gears must be supplied with new grease once a year. Tilt the sewing head back onto the support. Fig. shows the bevel gears of the double needle machine. Apply grease to all the tooth flanks and the rack (see arrows).

  • Page 23: Parts List

    PARTS LIST...

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