Global LP 8971-I-NP-AUT User manual

LP 8971-I-NP-
AUT
INSTRUCTION MANUAL
www.globalsew.com
[email protected]

CONTENT
1.Safety ……………………………………………………………………………………1
2.Specifications ……………………………………………………………………4
3.Controls …………………………………………………………………………………5
4.Installation and commissioning ……………………………………7
5.Preparation …………………………………………………………………………11
6.Care and Maintenance ………………………………………………………16
7.Adjustment ……………………………………………………………………………20

Safety
1 Safety
1.01 Safety symbols
Danger!
Points to be observed
Danger of injury for operating
and specialist personnel !
Caution
1.02 Important points for the user
1.
Do not operate without finger
guard and safety devices.
Before threading,changing
bobbin and needle, cleaning
etc switch off main switch.
This Instruction Manual is a component of the machine and must be
available to the operating personnel at all times.
The Instruction Manual must be read before operating the machine
for the first time.
The operating and specialist personnel must to be instructed in the
safeguards of the machine and safe work methods.
It is the duty of the user to operate the machine in perfect running
order.
It is the obligation of the user to ensure that none of the safety
mechanisms are removed or deactivated.
It is the obligation of the user to ensure that only authorized persons
operate and work on the machine.
1

Safety
1.03 Danger
A working area of 1meter is to be kept free both in front
of and behind the machine in operation so that the
machine is always easily accessible.
Never reach into the sewing area while sewing! Danger
of injury by the needle!
Never leave objects on the table while adjusting the
machine settings! Objects can become trapped or be
slung away! Danger of injury!
Do not operate the machine without support 1! Danger
due to top- heavy sewing head! Machine can tip over
backwards when tilted!
2
3
1
4
2

Safety
Switch the machine off before tilting it backwards!
Danger of injury if the machine is started accidentally!
Do not operate the machine without its take-up-lever guard 2!
Danger of injury due to the motion of the take-up lever!
On machines with thread lubricator, only operate the machine
with the eye guard 3 lowered! The eye guard 3protects the eyes
from oil particles from the thread lubrication!
Do not operate the machine without tilt lock 4!
Danger of crushing between sewing head and table top!
3

Specifications
2 Specifications
Stitch type (lockstitch)
Stitch length 0-5 mm
Clearance under roller presser 5 mm
Clearance width 245 mm
Clearance height 115 mm
Post height 180 mm
Sewing head dimensions
Length approx. 615 mm
Width approx. 240 mm
Height （above table）approx. 500 mm
Bedplate dimensions 518 x 177 mm
Max.speed 2500 spm.
Connection data
Operating voltage 230V ± 10%，50/60 Hz
Max.power consumption 1.2 KVA
Net weight of sewing head approx. 65 kg
Gross weight of sewing head approx. 77 kg
▲
Subject to alteration
4

Controls
3 Controls
1
5
The roller presser can be raised
by pressing the knee lever 1in
the direction of the arrow.
3.01 Pedal
0=Neutral position
1=Sewing
2=Raiser roller presser
3=Trim sewing threads
3.02 Lever for lifting roller presser
The roller presser can be raised
by turning lever 1.
3.03 Knee lever

Controls
3.04 Key for setting stitch length
1
3.05 Swing out roller presser
6
The stitch length is set by pressing
key 1and turning the balance wheel .
When the roller presser is raised, it
can be swung out by pulling it lightly
downwards (see arrow).

Installation and commissioning
4Installation and commissioning
The machine must only be installed and commissioned by
qualified personnel!
All relevant safety regulations must be strictly adhered to!
If the machine is delivered without a table, be sure to use a
stand and table top that can hold the weight of the machine .
It is very important to ensure that the stand of the machine is
firm and steady, also during sewing.
4.01 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.
For packing and transportation reasons the table top is in the
lowered position. The table height is adjusted as described below.
Adjusting the table height
7
Loosen screws 1and 2and set
the table height as required.
Firmly tighten screw 1.
Set the required pedal position
and tighten screw2.

Fix the tilt lock 1by screw 2.
(Supplied with accessories)
Do not operate the machine without
tilt lock 1! Danger of crushing
between sewing head and table top!
Switch the machine off! Danger of
injury if the machine is started
accidentally!
Installation and commissioning
4.02 Fitting the reel stand
4.02.01 Fitting the tilt lock
2
1
8
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.

Installation and commissioning
4.03 Commissioning
4.04 Tilted work base
9
Check the machine, particularly the electrical wiring for any
damage.
Clean the machine thoroughly and then oil it or fill oil in .
Have a mechanic check whether the motor of the machine can be
operated with the available power supply, and that the motor is
correctly connected in the junction box. If there are any
discrepancies. the machine must not be operated under any
circumstances.
The machine only be connected to an earthed socket!
When the machine is running, the balance wheel must turn
towards the operator. If it does not, must be changed by a
mechanic.

Installation and commissioning
4.05 Tilted work base
4.06 Mounting the table top
10

Switch the machine off! Danger of injury if the machine is
started accidentally!
Raise the roller presser 1and swing
it out .
Loosen screw 2and insert the
needles .as far as possible. The long
groove must face to the left .
Tighten screw 2and swing roller
presser 1back to position.
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.
Preparation
5 Preparation
5.01 Inserting needle on model
Only use needles of system 134
2
1
The Choice of needle depends on the model of the
machine and the thread and material used.
11
All instructions and regulations in this Instruction Manual
must be observed .
Special attention must be paid to all safety regulations!

Place an empty bobbin 1into bobbin winder spindle 2
Thread the bobbin as shown in Fig. And wind it
clockwise around bobbin 1 a few times
Switch on the bobbin winder while pressing bobbin
winder spindle 2and lever 3.
Preparation
5.02 Winding the bobbin thread; adjusting the primary thread tension
The bobbin is filled up during sewing.
If the threac1 is wound unevenly：
12
The thread tension of bobbin 1can be adjusted by
knurled screw 4.
The bobbin winder stops automatically when bobbin
1is full.
Loosen nut 5.
Turn thread guide 6accordingly.
Tighten nut 5.

Caution! Risk of injury!
Turn off the main switch.
The hook thread tension may only be
adjusted with the machine switched off.
Adjust the hook thread tension via the
screw 1. Increase the tension by
tightening the screw.
Measure the thread tension with a
dynamometer. Thread the thread
according to the picture and pull in the
arrow direction 2.
–Adjust the
Preparation
5.03 Inserting the bobbin and threading the hook thread
5.04 Adjusting the hook thread tension
Hook thread tension mean value
13
Sewing category
Used needle size
Thread tension in grams
light
70-80
50
medium
90-110
65
Tilt the shutter 1up.
Insert the bobbin 2with the thread
end 3oriented according to the
picture.
Thread the thread through the slit 4
and space 5, hook upon the shutter
1and fasten it under the spring 6.
Draw the thread in the sewing
direction to the throat plate corner
(about 40 mm).
Close the cover of hook 7.
Cut the protruding thread.
Switch the machine off ! Danger of injury if the machine is started accidentally !

Switch the machine off !
Danger of injury if the machine is started accidentally!
Tilt up the eye guard 1.
Thread the needle thread as shown in Fig.
Adjust the needle thread tension by turning milled
screw 2.
Preparation
5.05 Threading the needle thread and regulating its tension
14

Press key 1and at the same time turn the balance wheel
until the stitch setter clicks into position.
Hold down key 1and turn the balance wheel to and fro until
the stitch length required is shown on the scale 2opposite
the bottom edge 3of the belt guard recess.
Preparation
5.06 Setting the stitch length
2
3
1
15

Care and Maintenance
6Care and Maintenance
6.01 Cleaning and checking
Swi
Dan
16
The lacquered surfaces don’t clear with organic solvent.
For the cleaning are suitable detergents based on alcoholic.
Switch the machine off!
Danger of injury if the machine is started accidentally!
These maintenance intervals are calculated for the average
running time of a single shift operation. If the machine is
operated more than this, shorter intervals are recommended.
Clean………………………daily,more frequently if in continuous operation
Oil level (thread lubrication/hook lubrication)………………daily,before use
Oil the hook……………………………………………………daily,before use
Lubricate the bevel gears…………………………………………once a year

Places in special need of cleaning:
Area under the throat plate and
feeding
roller, top roller and its surrounding.
Area around the hook 1
Bobbin housing 2
Thread trimmer
Area around the needle
Remove the throat plate.Remove the
hook plunger ring 3. Remove the
bobbin housing 2from the hook. Clean
the inner area of the hook. Clean the
bobbin housing-particularly look for
glue remainder on the surface 4.
Check the clearance on the track
between bobbin housing 2and the
hook 1.
Care and Maintenance
Maintenance work Explanation Operating
to be carried out hours
Remove lint, pieces
of thread (e.g. with
an air blow gun)
Remove lint, pieces
of thread (e.g. with
an air blow gun)
Check the hook
17
8
20
500

Care and Maintenance
6.02 Oil bowl for hook lubrication
2
1
18
Check the oil level before each use. There must
always be oil in reservoir 1.
If required refill oil through hole 2.
Use only oil with a mean viscosity of 22.0mm2/s at
40℃and a density of 0.865g/cm3at 15℃.