Unicorn LT5-H7600-D-N Series User manual

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. Arm parts ....................................................................................................................................... 28
4. Bedplate parts ............................................................................................................................... 32
5. Hook post, left ............................................................................................................................... 37
6. Hook post, right............................................................................................................................. 39
7. Feed wheel post, left.................................................................................................................... 41
8. Feed wheel mounting plate ......................................................................................................... 42
9. Thread trimmer .............................................................................................................................. 43
10. Automatic presser foot lifter ......................................................................................................... 45
11. Backtacking mechanism .............................................................................................................. 46
12. Cable tree to sewing head .......................................................................................................... 50
13. Kit for sewing drive ....................................................................................................................... 51
14. Parts for table top ......................................................................................................................... 52

1
OPERATION DECLARATION

2
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 ........................................................................................... For sewing lightweight materials
Model B ..................................................................................For sewing medium-weight materials
Model C ...................................................................................For sewing medium-heavy materials
Thread thickness Nm(max.synthetic)
Model A .......................................................................................................................................... 60/3
Model B .......................................................................................................................................... 40/3
Model C .......................................................................................................................................... 15/3
Needle model
Model A ..................................................................................................................................... 70/134
Model B ..................................................................................................................................... 90/134
Model B ...............................................................................................................................90/134-35
Model C ................................................................................................................................... 120/134
Model C ............................................................................................................................ 120/134-35
Max. speed
A、B ................................................................................................................................... 3,000/spm
C............................................................................................................................................. 2,000spm

3
2. Installation
2. 01 Adjust the table height
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.
Loosen screws 1 and 2, and set the table height as required;
Firmly tighten screw 1;
Set the required pedal position and tighten screw 2.

4
2. 02 Fitting the tilt lock
2. 03 Fitting the machine cover
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!
Slide the slots of the lower section of the
cover 1 behind the heads of screws 2 and
attach with screws 3, then tighten screws 2
through the holes;
Attach right and left cover sections with
screws 4.

5
2. 04 Mounting the flange motor
2. 05 Mounting the flange motor to the machine
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;
Screw threaded stud 8 into the bearing plate 1.
Attach bearing plate 1 of motor 2 to the machine
case with screws 3 (only tighten screws 3
slightly)

6
2. 06 Mounting the toothed belt and adjusting the tension
2. 07 Mounting the belt guard of the flange motor
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.
Attach belt guard 1 with screws 2 and 3.

7
2. 08 Connecting the safety switch
2. 09 Fitting the reel stand
Connect plug 1 of safety switch in Fig.
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.

8
3. Controls
3. 01 Keys on the machine head
3. 02 Bobbin thread monitoring with stitch counting
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.
About 100 stitches before reaching the preset
number of stitches, diode 1 flashes;
After the thread has been trimmed and the
bobbin changed, the stitch counting begins
anew.