ZSK JAFA Maintenance Manual

ZSK JAFA Maintenance Manual

All machine types with t8 control unit
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Maintenance
all machine types
with T8 control unit
MADE
IN
GERMANY
ZSK STICKMASCHINEN MADE IN GERMANY

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Summary of Contents for ZSK JAFA

  • Page 1 Maintenance all machine types with T8 control unit MADE GERMANY ZSK STICKMASCHINEN MADE IN GERMANY...
  • Page 2 Subject to change! Änderungen vorbehalten! © ZSK Stickmaschinen GmbH Printed in Germany [ GB ] 00012V40 BACK...
  • Page 3: Table Of Contents

    Table of contents TABLE OF CONTENTS Maintenance �������������������������������������������������������������������������������������������������������������������������������������������5 General ���������������������������������������������������������������������������������������������������������������������������������������������5 Overview ������������������������������������������������������������������������������������������������������������������������������������������6 Lubricants ������������������������������������������������������������������������������������������������������������������������������������7 Maintenance work ���������������������������������������������������������������������������������������������������������������������������������7 Clean rotary hook and surrounding area, oil rotary hook �����������������������������������������������������������8 Foot plate: Flatbed machines ��������������������������������������������������������������������������������������������������������9 Clean thread trimmer �������������������������������������������������������������������������������������������������������������������9 Thread trimmer drive ��������������������������������������������������������������������������������������������������������������������9 Grease drive wheels ������������������������������������������������������������������������������������������������������������������10 Grease connecting rod ���������������������������������������������������������������������������������������������������������������...
  • Page 4 Table of contents Optional machine attachments ����������������������������������������������������������������������������������������������������24 Sequin device ����������������������������������������������������������������������������������������������������������������������������24 Boring attachment ����������������������������������������������������������������������������������������������������������������������25 Change borer �����������������������������������������������������������������������������������������������������������������������������25 Adjusting borer height ����������������������������������������������������������������������������������������������������������������26 Needle/Rotary Hook Adjustment �������������������������������������������������������������������������������������������������27 Adjusting loop stroke/needle depth ��������������������������������������������������������������������������������������������27 Rotary hook clearance ���������������������������������������������������������������������������������������������������������������28 T8/T8-2 settings ����������������������������������������������������������������������������������������������������������������������������� 29 Thread trimmer cleaning position �����������������������������������������������������������������������������������������������29 Execution 1 ��������������������������������������������������������������������������������������������������������������������������������29 Adjusting boring depth ���������������������������������������������������������������������������������������������������������������32 Main shaft positioning ����������������������������������������������������������������������������������������������������������������32...
  • Page 5: Maintenance

    General Maintenance General Before undertaking any cleaning or maintenance work: Make certain that the machine cannot be switched on unintentionally by unauthorized persons. As a general rule, cleaning and maintenance work is to be performed only if the plug has been removed from the mains socket. Covers have to be removed to perform some maintenance work.
  • Page 6: Overview

    - Clean upper thread guide elements (embroidery head) - Boring attachment - Change borer Cleaning and maintenance work (machine, general) Every three - Grease linear guide - Flatbed machines - SPRINT, JAFA, RACER months - Pantograph control) All machines: grease side-to-side drive...
  • Page 7: Lubricants

    The table below contains the DIN 51502 designations and the principal properties of the ZSK original lubricants. If using other lubricants, choose only greases and oils that are in the same category as the original lubricants and thus have similar properties.
  • Page 8: Clean Rotary Hook And Surrounding Area, Oil Rotary Hook

    Clean rotary hook and surrounding area, oil rotary hook Clean rotary hook and surrounding area, oil rotary hook Every day: The rotary hook and surrounding area must be kept clean at all times. In addition, the hook must be oiled every day. •...
  • Page 9: Foot Plate: Flatbed Machines

    Foot plate: Flatbed machines Foot plate: Flatbed machines Every day: • Detach the stitch plate with a suitable tool. Clean thread trimmer • Clean the thread trimmer area of the foot plate with compressed air or a brush. Thread waste that becomes lodged between or beneath the blades of the thread trimmer can cause the thread trimmer to malfunction.
  • Page 10: Grease Drive Wheels

    Foot plate: Flatbed machines Every three months: Grease drive wheels • With the stitch plate removed, apply a little grease to the upper drive wheel of the foot plate. Fig. 3: Foot plate, greasing drive wheel • Remove the protective hood under the foot plate q.
  • Page 11: Grease Connecting Rod

    Foot plate: Flatbed machines To turn the main/bottom shaft by hand, the brake has to be released. Switch on the machine and use the relevant control function to release the brake for this purpose (see Main shaft brake). De-energize the machine again after greasing. Grease connecting rod Every six months: •...
  • Page 12: Cylinder Arm

    Cylinder arm Cylinder arm Every day: • Detach the stitch plate with a suitable tool. Clean thread trimmer • Clean the cylinder arm with compressed air or a brush. Thread waste that becomes lodged between or beneath the blades of the thread trimmer can cause the thread trimmer to malfunction. For this reason, remove thread waste at least once a week and more frequently in the event of severe contamination.
  • Page 13: Grease Drive Wheel

    Cylinder arm Every three months: Grease drive wheel • Helical gear wheel Fig. 8: Cylinder arm, thread trimmer drive wheel To turn the main/bottom shaft by hand, the brake has to be released. Switch on the machine and use the relevant control function to release the brake for this purpose (see Main shaft brake).
  • Page 14: Thread Trimmer Drive (Underneath Cylinder Arm)

    Cylinder arm Rear bearing of thread trimmer connecting rod Fig. 10: Cylinder arm, connecting rod lubrication points • Reinstall the stitch plate and the two cylinder arm cover plates. • When installing, align the stitch plate so that the needle hole is located centrally under the needle.
  • Page 15: Picker

    Cylinder arm Fig. 12: Thread trimmer drive lubrication points (view of cylinder arm from rear) Picker The picker on the tubular arm is maintenance-free. Fig. 13: Picker BACK...
  • Page 16: Grease Linear Guide

    Grease linear guide Grease linear guide Every three months: Grease the linear guides every three months (more frequently in case of two or three-shift duty cycles). A cover has to be removed for this purpose. Switch off the machine and remove the plug from the mains socket. Flatbed machines •...
  • Page 17: Machines With Several Transverse Drives

    Grease linear guide Make certain that no grease is applied to the toothed belt; this can give rise to malfunctions. Do not restart the machine until all covers have been properly reinstalled. Machines with several transverse drives The several transverse drives on some machines are connected by way of a crossarm, so that the covers cannot be removed.
  • Page 18 Grease linear guide 0 1 1 Fig. 17: Pantograph drive (front to back) (Tiefe) Illustration: front cover raised (machine shown without control) Fig. 18: Pantograph drive (side to side) BACK...
  • Page 19: Embroidery Head Maintenance

    Embroidery head maintenance Embroidery head maintenance Every three months: Oil felt in drive unit A drive unit accommodating the drives for the needles, presser feet and thread take-ups, as well as the jump stitch mechanism, is located behind each of the needle units .
  • Page 20: Oil Felts In Needle Unit

    Embroidery head maintenance Every three months: Oil felts in needle unit Oil-impregnated felts provide a constant supply of oil to the needle bars. The felts must be oiled every three months (the interval is to be shortened accordingly in the case of a two or three-shift duty cycle).
  • Page 21: Oil Connecting Rods In Drive Unit

    Embroidery head maintenance Every six months: Oil connecting rods in drive unit The plastic connecting rods in the drive units must be oiled every six months (the interval is to be shortened accordingly in the case of a two or three-shift duty cycle). For this purpose the drive unit covers located behind the needle units have to be removed.
  • Page 22 Embroidery head maintenance • Spray oil onto the parts indicated by the arrows in the drawing. Rocker arm Carriage Plastic connecting Fig. 22: Stickkopf, Pleuel im Oberteil ölen Do not restart the machine until all covers have been properly reinstalled. BACK...
  • Page 23: Clean Upper Thread Guide Elements

    Embroidery head maintenance As necessary: Clean upper thread guide elements Dust and lint gradually collect in the holes of the upper thread guide elements and at the thread tension devices (especially the pretension regulators). For this reason, clean the thread guide elements regularly. •...
  • Page 24: Optional Machine Attachments

    Optional machine attachments Optional machine attachments Every three months: Sequin device As a general rule, cleaning and maintenance work is to be performed only if the plug has been removed from the mains socket. Lubricate the spindles of all sequin devices all three month with Gleitmo 585M grease! •...
  • Page 25: Boring Attachment

    Optional machine attachments As necessary: Boring attachment Change borer The borer is a cutting tool and therefore razor sharp. Observe the following safety instructions to avoid injury: - Never touch the tip of the borer, always hold it by the shank. - Free borers that have become jammed with a suitable pair of flat nose pliers.
  • Page 26: Adjusting Borer Height

    Optional machine attachments Adjusting borer height At the control, set the top shaft to 141° and adjust the clearance between the borer point and stitch plate insert to 0.8 + 0.1 mm. • Clean the stitch plate insert place the 0.8 mm feeler gauge be- tween the borer and stitch plate insert.
  • Page 27: Needle/Rotary Hook Adjustment

    The needle depth is the distance between the top edge of the needle eye and the point of the rotary hook. Loop stroke Needle depth Needle Exact loop stroke position Bottom dead center Eye of needle Fig. 27: Needle depth, adjusting Loop stroke Needle depth Application [X=mm] [Y=mm] Flatbed machines JAFA SPRINT/RACER BACK...
  • Page 28: Rotary Hook Clearance

    The rotary hook clearance is the distance between the hollow shaft of the needle and the point of the rotary hook. Needle Hollow shaft Point of rotary hook Fig. 28: Adjusting rotary hook Application Clearance [Z=mm] Flatbed machines 0,05 - 0,1 SPRINT, JAFA, RACER 0,05 - 0,1 BACK...
  • Page 29: T8/T8-2 Settings

    T8/T8-2 settings T8/T8-2 settings Thread trimmer cleaning position Execution 1 BACK...
  • Page 30 T8/T8-2 settings • Press the [Start] key or the hand bar. Ö The thread cutter moves forward to the cleaning position. • Use compressed air to clean the thread trimmer knife. • • After cleaning is complete, press the key [L8/R8] Previous. Ö...
  • Page 31 T8/T8-2 settings Use the cursor keys to select the Thread Cutter Cleaning Position. • Press the [Start] key or the hand bar. Ö The thread cutter moves forward to the cleaning position. • Use compressed air to clean the thread trimmer knife. •...
  • Page 32: Adjusting Boring Depth

    T8/T8-2 settings Adjusting boring depth Main shaft positioning Starting from the basic screen of the T8 operating unit: • Press the [L3] Service key. • Press the [R2] Test machine attachment key in the Service dialog. • Use the cursor keys to select the Set boring depth item in the selection list. •...
  • Page 33 T8/T8-2 settings Ö An input box is displayed on the Main shaft position button. • Enter the value 141.0° required for setting the boring depth in the input box using the U keys. • Press the green Start key on the T8 control unit. Ö...
  • Page 34 T8/T8-2 settings If you need a larger display of the set value to see the value from a greater distance, press the [L8] Main shaft position key. The set value is then shown large on the display. The display should show a value that reaches max. +/- 0.5° deviation from the entered main shaft position.
  • Page 35: Manual Main Shaft Positioning

    T8/T8-2 settings Manual main shaft positioning The starting point for this operation is the Test machine attachment (f head) menu, which is still active. • Unlock the main shaft brake by pressing the Jog key once. Ö The main shaft can now be freely rotated. •...
  • Page 36: Main Shaft Brake

    T8/T8-2 settings Main shaft brake The machine is braked by an electromagnet integrated in the main motor when stationary and disconnected from the power supply (main shaft brake). For some maintenance purposes the main shaft brake has to be released when the machine is stationary. The brake is released electromagnetically;...
  • Page 37 T8/T8-2 settings • Press the [U2] Switch off main shaft brake key to release the main shaft brake. You can now rotate the main shaft manually with the handwheel or supplied lever wrench to the position required to perform the neces- sary maintenance work.
  • Page 38 © 2022 ZSK Stickmaschinen GmbH Printed in Germany ZSK Stickmaschinen GmbH Magdeburger Str� 38-40 D-47800 Krefeld Germany www�zsk�de zsk@zsk�de...

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