1. Manuals
  2. Brands
  3. Pfaff Manuals
  4. Sewing Machine
  5. 3801-3/07
  6. Instruction manual

Pfaff 3801-3/07 Instruction Manual

Integrated workplace for pre-gathering and bridle-taping armholes
Hide thumbs
Table of Contents

Advertisement

Quick Links

3801
-3/07 , -3/071, -11/071
INSTRUCTION MANUAL
This instruction manual applies to machines
from serial number 2 716 117 and software
version 0352/011 onwards.
296-12-18 590/002
Betriebsanleitung engl. 03.12

Advertisement

Table of Contents
loading

Related Manuals for Pfaff 3801-3/07

Summary of Contents for Pfaff 3801-3/07

  • Page 1 3801 -3/07 , -3/071, -11/071 INSTRUCTION MANUAL This instruction manual applies to machines from serial number 2 716 117 and software version 0352/011 onwards. 296-12-18 590/002 Betriebsanleitung engl. 03.12...
  • Page 2 This Instruction Manual is valid for all models and subclasses listed in the chapter "Specifications". The reprinting, copying or translation of PFAFF Instruction Manuals, whether in whole or in part, is only permitted with our previous authorization and with written reference to the source.

  • Page 3: Table Of Contents

    Knee switch ........................7 - 2 Edge guide ........................7 - 3 Lever for retracting the tape-feeding unit (only on the PFAFF 3801-11/071) .................. 7 - 3 Reverse-feed control lever .................... 7 - 4 Control panel ......................... 7 - 5 Mounting and commissioning the machine .............

  • Page 4: Contents

    Threading the bridle tape (on the PFAFF 3801-11/071)..........9 - 4 Setting the seam depth ....................9 - 5 Threading the bridle tape (on thePFAFF 3801-3/07 and -3/071) ........9 - 6 Selecting the program number ..................9 - 7 Inputting fullness ......................
  • Page 5 Basic setting of the differential adjustment device ............. 13 - 19 05.17 Looper avoiding motion ....................13 - 20 05.18 Looper height and looper angle (for the 3801-3/07) ............. 13 - 21 05.19 Looper height and looper angle (for the 3801-3/071 and -11/071) ....... 13 - 22 05.20 Distance of the looper from the needle (in sewing direction) ........
  • Page 6 Contents Contents ................. Chapter - Page 07.03 Adjusting the air jets ....................13 - 44 07.04 Fastening the light guides ................... 13 - 45 Parameter settings ...................... 13 - 46 08.01 Overview of the parameter functions ................. 13 - 46 08.02 Example of a parameter input ..................

  • Page 7: Safety

    Safety Safety Directives This machine is constructed in accordance with the European regulations contained in the conformity and manufacturer’s declarations. In addition to this Instruction Manual, also observe all generally accepted, statutory and other regulations and legal requirements and all valid environmental protection regulations! The regionally valid regulations of the social insurance society for occupational accidents or other supervisory organizations are to be strictly adhered to! General notes on safety...

  • Page 8: Safety Symbols

    ● 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. Further information can be obtained at your PFAFF agent. 1 - 2...

  • Page 9: Operating And Specialist Personnel

    Safety Operating and specialist personnel Operating personnel .05.01 Operating personnel are persons responsible for the equipping, operating and cleaning of the machine as well as taking care of faults arising in the sewing area. The operating personnel is obliged to observe the following points and must: ●...

  • Page 10: Danger

    Safety Danger A working area of 1 meter is to be kept free both in front of and behind the machine while it is in operation so that it 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!

  • Page 11: Proper Use

    Proper use Proper use The PFAFF 3801-3/07, the PFAFF 3801-3/071 and the PFAFF 3801-11/071 are integrated workplaces for the clothing industry for the application of fullness in one material ply. Machinemodel Equipment 3801-3/07 (without options) 3801-3/071 with thread-trimming unit 3801-11/071...

  • Page 12: Specifications

    Fuse protection: .................... 1 x 16 A, inert Working air pressure: ....................6 bar Air consumption : ....0.3 – 0.5 l/work cycle (on the Pfaff 3801-3/07 and the PFAFF 3801-3/071) Noise data: Emission sound pressure level at the workplace with ■...

  • Page 13: Disposal Of Machines

    Disposal of machines Disposal of machines ● The proper disposal of the machines is the responsibility of the customer. ● The materials used in the machines are steel, aluminium, brass and various plastics. The electrical equipment consists of plastics and copper. ●...

  • Page 14: Transport, Packaging And Storage

    Transport, packaging and storage Transport, packaging and storage Transportation to customer's premises All machines are delivered completely packed. Transport within the customer’s premises The manufacturer bears no liability for transport within the customer’s premises or to the in- dividual locations of use. Always ensure that the machine is only transported upright.

  • Page 15: Explanation Of The Symbols

    Explanation of the symbols Explanation of the symbols In this Instruction Manual, tasks to be carried out and important information are drawn to your attention by symbols. The symbols have the following meanings: Note, information Cleaning, care Lubrication Servicing, repairing, adjustment, maintenance (only to be carried out by specialist personnel) 6 - 1...

  • Page 16: Controls

    Controls Controls Main switch ● The machine is switched on or off by turning main switch 1. Fig. 7 - 01 Pedal Machine stop Presser foot down Presser foot up Cut thread Fig. 7 - 02 7 - 1...

  • Page 17: Lever For Lifting The Presser Foot

    Controls Lever for lifting the presser foot ● The presser foot is raised by turning lever 1. Fig. 7 - 03 Knee switch ● When sewing with the fixed programs (program numbers 1 and 2), it is possible to change to the next seam section by pressing knee switch 1.

  • Page 18: Edge Guide

    ● By pressing switch-key 2, the edge guide can be raised. Fig. 7 - 05 Lever for retracting the tape-feeding unit (only on the PFAFF 3801-11/071) ● The tape-feeding unit can be retracted with lever 1. Fig. 7 - 06...

  • Page 19: Reverse-Feed Control Lever

    Controls Reverse-feed control lever ● To sew condensed stitches, press lever 1 down. Fig. 7 - 08 7 - 4...

  • Page 20: Control Panel

    Controls Control panel 2 GB max. Fig. 7 - 08 The current operating conditions are displayed on control panel 1. Operation takes place in a constant dialogue between the control unit and the operator. For this purpose, depending on the operating condition of the machine, different symbols and/or texts are displayed. If the symbols or texts are framed, these show functions which can be selected by pressing the appropriate position on the monitor.

  • Page 21: Mounting And Commissioning The Machine

    Mounting and commissioning the machine Mounting and commissioning the machine The machine must only be mounted and commissioned by qualified personnel! All relevant safety regulations are to be observed! If the machine is delivered without a table, you must make sure that the frame and the table top which you intend to use can hold the weight of the machine and the motor.

  • Page 22: Tightening The V-Belt

    Mounting and commissioning the machine Tightening the V-belt .01.02 ● Fit the V-belt. ● Loosen nut 1 and tighten the V-belt by turning motor mounting 2. ● Tighten nut 1. 109-020 Fig. 8 - 02 Fitting the upper belt guard .01.03 ●...

  • Page 23: Mounting The Bottom V-Belt Guard

    Mounting and commissioning the machine Mounting the bottom V-belt guard .01.04 Fig. 8 - 04 109-071 ● Loosen screws 2 and adjust belt guard support 1 so that the motor pulley and V-belt run freely. ● Tighten screws 2. ● Fasten belt guard 3 with screw 4. Fitting the synchronizer .01.05 ●...

  • Page 24: Connecting The Plug-In Connections And Earth Cables

    Mounting and commissioning the machine Connecting the plug-in connections and earth cables .01.06 Fig. 8 - 06 ● Connect all plugs as labelled in the control box 1. ● Screw the earth cable from the sewing head to earth point A. ●...

  • Page 25: Fitting The Reel Stand

    Mounting and commissioning the machine Fitting the reel stand .01.07 ● Fit the reel stand as shown in Fig. 8 - 07. ● Afterwards insert the stand in the hole in the table top and secure it with nuts pro- vided.

  • Page 26: Commissioning

    Mounting and commissioning the machine Commissioning Before setting up, remove the protective foil from oil glass 1! ● Clean the machine thoroughly and afterwards check the oil level (see Chapter 12, Care and Maintenance). ● Check the machine for any damage, especially the electrical leads.

  • Page 27: Preparation

    Preparation Preparation All regulations and instructions in this Instruction Manual are to be observed! Special attention is to be paid to the safety regulations! All preparation work is only to be carried out by appropriately trained personnel. Before all preparation work, the machine is to be separated from the electricity supply by removing the plug from the mains or switching off the On/Off switch! Inserting the needle...

  • Page 28: Threading The Needle Thread And Regulating Its Tension

    Preparation Threading the needle thread and regulating its tension 7 cm Fig. 9 - 02 Switch off the machine! Danger of injury by unintentional starting of the machine! ● Thread the needle thread as shown in Fig. 9-02. ● Regulate the needle thread by turning knurled screw 1. 9 - 2...

  • Page 29: Threading The Looper Thread And Regulating Its Tension

    Preparation Threading the looper thread and regulating its tension Fig. 9 - 03 Fig. 9 - 04 Switch off the machine! Danger of injury by unintentional starting of the machine! ● Open the looper cover and swing out thread guide plate 1. ●...

  • Page 30: Threading The Bridle Tape (On The Pfaff 3801-11/071)

    Preparation Threading the bridle tape (on the PFAFF 3801-11/071) Fig. 9 - 05 Switch off the machine! Danger of injury by unintentional starting of the machine! ● Thread the bridle tape 1 as shown in the above illustration. ● Operate lever 2 and guide the bridle tape 1 between the feed rollers 3.

  • Page 31: Setting The Seam Depth

    Preparation Setting the seam depth Fig. 9 - 06 Switch off the machine! Danger of injury by unintentional starting of the machine! ● Switch on the edge guide, see Chapter 7.05 Edge guide. ● Loosen screws 1. ● Adjust edge guide 2 according to the seam depth required and tighten screws 1. 9 - 5...

  • Page 32: Threading The Bridle Tape (On Thepfaff 3801-3/07 And -3/071)

    Preparation Threading the bridle tape (on thePFAFF 3801-3/07 and -3/071) Fig. 9 - 07 Switch off the machine! Danger of injury by unintentional starting of the machine! ● Thread the bridle tape as shown in the above illustration. 9 - 6...

  • Page 33: Selecting The Program Number

    Preparation Selecting the program number ● Switch on the machine. ● Call up the program number input menu. ● Select the desired program number. ● Confirm the selection and quit the selection menu. The type of sewing is stipulated with the selection of the program number, see Chapter 10 Sewing.

  • Page 34: Entering / Altering The Code Number

    Preparation Entering / altering the code number ● Switch on the machine. ● Call up the input mode. ● Select parameter "800". ● Select the code number input menu. ● Enter the code number on the number keys (factory code setting is "3800"). ●...
  • Page 35 ● Call up the code number input menu and enter the desired code number. ● Take over the new code number. ● Conclude input. Do not forget the code! Without the appropriate code, the protected functions cannot be called up! Help is then only possible through PFAFF service staff. 9 - 9...

  • Page 36: Entering The Seam Parameter

    Preparation Entering the seam parameter ● Switch on the machine. ● Select the menu for the program number input. ● Select program number "0"- ● Confirm the selection and quit the selection menu. ● Call up the "seam end" function. ●...
  • Page 37 Preparation ● Enter the desired length of the tape section. ● Conclude the input. Prepare tape section, approx. 32 mm Direction of seam Bridle tape Seam section 1 Seam depth Trimming margin Seam protrusion End of tape approx. 18 stitches End of tape with pedal -2 Seam section 5...

  • Page 38: Adjusting The Control Panel

    Preparation Adjusting the control panel ● Switch on the machine. ● Call up the input mode. ● Select the service menu. ● Select control panel functions. ● Change the display contrast. ● Switch the key tone off or on. Never reduce the display contrast to the extent, that the display can no longer be read! 9 - 12...

  • Page 39: Sewing

    Sewing Sewing In the sewing mode all relevant settings for the sewing operation are displayed on the screen and can be altered with the corresponding functions. In the sewing mode a difference is made between manual sewing, sewing with fixed programs and programmed sewing.
  • Page 40 Sewing Seam end (only on machines with tape feed device - 3801-11/071) Opens the menu for entering the seam parameters at the end of the seam (pedal position "-2"), see Chapter 9.10 Entering the seam parameters Needle raised Moves the needle to its highest position Tape feed (only on machines with tape feed device - 3801-11/071) Switches the tape feed device on or off.

  • Page 41: Sewing With Fixed Programs

    Sewing Sewing with fixed programs Fixed programs are stored under the program numbers 1 and 2. The fixed programs are used for the quick and easy production of seams with different amounts of fullness. When sewing with fixed programs, 2 or 3 seam sections are sewn after each other.
  • Page 42 Sewing Needle raised Moves the needle to its highest position Tape feed (only on machines with tape feed device - 3801-11/071) Switches the tape feed device on or off. Feed tape (only on machines with tape feed device - 3801-11/071) When the tape feed device is switched on, this function feeds the tape (threading aid), see Chapter 9.04 Threading the bridle tape.

  • Page 43: Programmed Sewing

    Sewing Programmed sewing With the program numbers 3 – 49 it is possible to call up previously programmed seams. In programmed sewing all seam sections for pre-gathering a sleeve are set in one seam pro- gram. The information about the seam program, such as program number, number of programmed seam sections, programmed comments and garment size is displayed.

  • Page 44: Fullness Adjustment

    Sewing Fullness adjustment Displays and adjusts the programmed fullness, see Chapter 10.03.01 Adjusting the fullness. Program interruption Interrupts the program sequence, see Chapter 10.03.03 Program interruption Basic size / garment size Displays the basic size and opens a menu for selecting the garment size, see Chapter 10.03.02 Selecting the garment size.

  • Page 45: Selecting The Garment Size

    Sewing Selecting the garment size .03.02 Based on the programmed basic size, in programmed sewing it is possible to select a garment size. The seam sections, which were given a graduated value during programming, are converted to the new size. ●...

  • Page 46: Error Messages

    Sewing Error messages If an error occurs, the text "ERROR" appears on the display, together with an error code. An error message is caused by incorrect settings, defective elements or seam programs and by overload conditions. For an explanation of the error codes see Chapter 13.10 Explanation of the error messages.

  • Page 47: Input

    Input Input In the input mode the functions parameter input, information, creating/adjusting a sewing program, teach-in, program administration and service are available. ● Switch on the machine. ● Call up the input mode. Explanation of the functions Sewing mode Quit the input mode and call up the sewing mode. Parameter selection Select the hundred and unit figures of the desired parameters, see Chapter 13.08.02 Example of a parameter input.

  • Page 48: Seam Program Input

    Input Seam program input Seam programs can be created by entering parameters in the "Creating/adjusting a seam program" function, or by sewing a sample with the "Teach in" function. Irrespective of which function is being used, first of all it is necessary to select the program number and the basic settings of the seam program, which is to be sewn.
  • Page 49 Input ● If applicable, enter or change a comment. ● Set the seam type (by pressing the appropriate symbol several times until the appropriate seam type is displayed). Description of the symbols: Sewing program with left and right seam, beginning with the right seam. Sewing program with left seam only.

  • Page 50: Seam Program Input With The "Creating/Adjusting A Program" Function

    Input Seam program input with the "Creating/adjusting a program" function .01.02 With this function the seam program is entered by entering or changing the appropriate values on the control panel. This type of seam program input is particularly suitable for adjusting existing seam programs.
  • Page 51 Input ● Change the graduated value. The graduated value is used to adapt different garment sizes to the programmed basic size. ● Select a seam type. It is only possible to select the right or left sleeve seam if the seam type "right and left sleeve seam"...

  • Page 52: Seam Program Input With The "Teach-In" Function

    Input Seam program input with the "Teach-in" function .01.03 With this function the seam program is created by sewing a sample. A new program is always created, i.e. if an existing program is selected, this will be overwritten. ● Switch on the machine. ●...
  • Page 53 Input After sewing the following displays and functions appear on the screen. ● Switch to the next seam section. The seam section change can be called up by activating the appropriate function or by pressing the knee switch (with the appropriate setting of parameter "201", see Chapter 13.08 Parameter settings).

  • Page 54: Examples Of How To Create Seam Programs

    Input Examples of how to create seam programs Example of a seam program input using the .02.01 "Creating/adjusting a program" function The seam program to be created should to begin with only consist of the right sleeve seam, have 2 seam sections, be based on the basic size 50 (German men’s sizes) and be stored under the program number "4"...
  • Page 55 Input In the first seam section the number of stitches should be "20" and the seam should be sewn with a graduated value of "2" without fullness. The values for the placement stitch and the maximum speed remain unchanged. ● Enter the value "0" for the fullness. ●...

  • Page 56: Example Of A Seam Program Input Using The "Teach-In" Function

    Input ● Activate the "end of program" function. ● Conclude the seam program and change to programmed sewing. Example of a seam program input using the "teach-in" function .02.02 The seam program to be created should to begin with only consist of the left sleeve seam, have 2 seam sections, be based on the basic size 6 (American ladies’...
  • Page 57 Input ● Call up the menu for comment input. ● Enter the comment "TEACH" with the keyboard and number panel. ● Conclude the comment input. ● Change to the input of the first seam section. The first seam section should be sewn without fullness (value "0"...
  • Page 58 Input The second seam section should be sewn with a fullness value "30" and with a graduated value of "3". ● Enter the value "30" for the fullness. ● Enter graduated value "3". ● Sew the second seam section using the pedal function. ●...

  • Page 59: Seam Program Administration

    Input Seam program administration In the program administration the seam programs deposited in the machine memory and the SD-Card can be deleted and copied. The left side of the display shows the programs in machine memory. The right side of the display shows the programs on the SD-Card. Selected programs are red marked.
  • Page 60 Input Dialog window The dialog window shows questions and additional buttons for the answers. Enter button Enter button Yes for one seam program. All button Yes for one or all marked seam programs. Esc button No for one or all marked seam programs. Next button No for one seam program.

  • Page 61: Care And Maintenance

    Care and Maintenance Care and Maintenance Clean looper compartment ........daily, several times if in continuous use Clean the entire machine ................once a week Check the oil level ..................daily, before use Lubricate the articulated joints of the top feed ..........once a week Check/adjust the air pressure ..............

  • Page 62: Machine Oil Level

    Only use oil with a mean viscosity of 22.0 mm²/s at 40º C and a density of 0.865 g/cm³ at 15º C!. We recommend PFAFF sewing machine oil. Order-No. 280-1-120 144. Fig. 12 - 02 Cleaning/lubricating the top feed joints ●...

  • Page 63: Checking/Adjusting The Air Pressure

    Care and Maintenance Checking/adjusting the air pressure ● Before operating the machine, always check the air pressure on gauge1. ● Gauge 1 must show a pressure of 6 bar. ● If necessary adjust to this reading. ● To do so, pull knob 2 upwards and turn it so that the gauge shows a pressure of 6 bar.

  • Page 64: Adjustment

    Adjustment Adjustment Please observe all notes from Chapter 1 Safety of the instruction manual! In particular care must be taken to see that all protective devices are refitted properly after adjustment, see Chapter 1.06 Danger warnings of the instruction manual! If not otherwise stated, the machine must be disconnected from the electrical power supply.

  • Page 65: Checking And Adjusting Aids

    Adjustment Checking and adjusting aids By inserting the adjustment pin (ø 5 mm) into holes 1, 3 and 4 the needle bar can be fixed precisely in the desired position. Fig. 13 - 01 ● Turn the handwheel until the needle bar is approximately in the desired position. ●...

  • Page 66: Adjusting The Basic Machine

    Adjustment Adjusting the basic machine Basic position of the machine .05.01 ● Switch on the machine. ● Call up the input mode. ● Call up parameter "301". ● By turning the balance wheel, position the needle point flush to the top edge of the needle plate.

  • Page 67: Position Of Needle To Needle Hole

    Adjustment Position of needle to needle hole .05.02 Requirement 1. As seen crosswise to the direction of sewing, needle 5 should enter the needle hole in the centre. 2. The distance between needle 5 and the front edge of the needle hole should be approx. 0.8 mm.

  • Page 68: Pre-Adjusting The Needle Height

    Adjustment Pre-adjusting the needle height .05.03 Requirement At the top dead center of the needle bar (hole 1), the clearance between the needle plate and the point of the needle must be 11 mm. Fig. 13 - 03 ● Bring the needle bar 1 to its TDC. ●...

  • Page 69: Neutral Position Of The Main Feed Dog

    Adjustment Neutral position of the main feed dog .05.04 Requirement When the stitch length is set at "0", there should be no feeding motion of the main feed dog 7. 54-044 Fig. 13 - 04 ● Unscrew screw 1 (nut 2) (stitch length limitation deactivated). ●...

  • Page 70: Zero Position Of The Differential Feed Dog

    Adjustment Zero position of the differential feed dog .05.05 Requirement At stitch length setting " 0 " and with adjustment gauge 1 fitted, differ-ential feed dog 5 must not make any movement. 54-033 Fig. 13 - 05 ● Set stitch length at " 0 " . ●...

  • Page 71: Feeding Motion Of Main- And Differential Feed Dogs

    Adjustment Feeding motion of main- and differential feed dogs .05.06 Requirement With the longest stitch length set, the needle bar in position 0.8 before t.d.c. (hole 4) and adjustment gauge 8 fitted, the main- and differential feed dogs must not move when lever 5 is operated.

  • Page 72: Lifting Motion Of Main- And Differential Feed Dogs

    Adjustment Lifting motion of main- and differential feed dogs .05.07 Requirement With the needle bar at t.d.c. (hole 1) the cutouts of eccentrics 3 and 4 must face vertically downwards. Fig. 13 - 07 ● Loosen screws 1 and 2 (four screws). ●...

  • Page 73: Position Of Main- And Differential Feed Dogs

    Adjustment Position of main- and differential feed dogs .05.08 Requirement When the needle bar is at t.d.c (hole 1) and the longest stitch length is set the main- and dif- ferential feed dogs must: 1. rest their full length on adjustment gauge 5, 2.

  • Page 74: Zero Position Of Feeding Presser

    Adjustment Zero position of feeding presser .05.09 Requirement With the stitch length set at " 0 " and adjustment gauge 4 in place the feeding presser must not make any movement. 54-033 Fig. 13 - 09 ● Set feed regulator at " 0 ". ●...

  • Page 75: Front Driving Link Of Feeding-Presser Drive

    Adjustment Front driving link of feeding-presser drive .05.10 Requirement With the needle bar at 0.8 mm before t.d.c. (hole 4) there must be a distance of 16.5 mm between the eye of link 2 and machine housing 3. 16,5 mm Fig.

  • Page 76: Positioning The Lifting Presser

    Adjustment Positioning the lifting presser .05.11 Requirement 1. With presser bar lifter 1 raised there must be a clearance of 5 mm between lifting pres- ser 13 and the needle plate. 2. The needle must enter the centre of the needle hole in lifting presser 13. 3.
  • Page 77 Adjustment ● Tighten screw 6. ● Remove gauge 4 and lower lifting presser 13 onto the needle plate. ● Loosen screw 14. ● Swing lever 9 into the fork of lever 10. ● Insert pin 7 (screw 8), making sure it can move freely. ●...

  • Page 78: Feeding Motion Of The Top Feed Dog

    Adjustment Feeding motion of the top feed dog .05.12 Requirement When the maximum stitch length is set, and the needle bar is positioned 0.8 mm before t.d.c. (hole 4), lever 4 should not move when lever 2 is operated. 54-059 Fig.

  • Page 79: Lift Of Feeding Presser

    Adjustment Lift of feeding presser .05.13 Requirement With the stitch length set at " 2.5 " and the adjustment gauge in place, the feeding presser 2 must clear the needle plate by 3.2 mm when at the top of its stroke. Fig.

  • Page 80: Lifting Stroke Of Feeding Presser

    Adjustment Lifting stroke of feeding presser .05.14 Requirement With the stitch length set at " 2.5 " and adjustment gauge 3 in place, the feeding presser must contact the bottom feed dog when the latter has risen to the top surface of the needle plate.

  • Page 81: Stitch Length Limitation

    Adjustment Stitch length limitation .05.15 Requirement 1. The bottom stroke of rocking bar 6 should be set so that the stitch length is 2.0 mm (x = 20 mm with 11 penetration points). 2. With the same stitch length screw 4 should slightly touch the casting. (It must no longer be possible to move rocking bar 6.) 54-039 Fig.

  • Page 82: Basic Setting Of The Differential Adjustment Device

    Adjustment Basic setting of the differential adjustment device .05.16 Requirement With the fullness set at "0", the stitch length at "2.0" and the adjustment gauge 3 fitted, the roller 1 should be touching pressure sleeve 4. 54-034 Fig. 13 - 16 ●...

  • Page 83: Looper Avoiding Motion

    Adjustment Looper avoiding motion .05.17 Requirement With the needle bar at t.d.c. (hole 1) the cutout in eccentric 2 must be positioned vertically below the shaft centre line. Fig. 13 - 17 ● Loosen screw 1. ● Set needle bar at t.d.c. ●...

  • Page 84: Looper Height And Looper Angle (For The 3801-3/07)

    Adjustment Looper height and looper angle (for the 3801-3/07) .05.18 Requirements When the looper carrier 2 is vertical 1. there must be a clearance of 0.7 mm between the highest point of the back of the looper and the needle plate support surface, and 2.

  • Page 85: Looper Height And Looper Angle (For The 3801-3/071 And -11/071)

    Adjustment Looper height and looper angle (for the 3801-3/071 and -11/071) .05.19 Requirements When the looper carrier 1 is vertical 1. there must be a clearance of 0.3 mm between the highest point of the back of the looper and the bottom of the thread trapper 9, and 2.

  • Page 86: Distance Of The Looper From The Needle (In Sewing Direction)

    Adjustment Distance of the looper from the needle .05.20 (in sewing direction) Requirement In the sewing direction the distance of the looper point from the needle should be approx. 0.1 mm. 0,1 mm Fig. 13 - 20 ● Turn the balance wheel until the looper point coming from the right has reached the left side of the needle.

  • Page 87: Looper-To-Needle Clearance (Crosswise To Sewing Direction)

    Adjustment Looper-to-needle clearance .05.21 (crosswise to sewing direction) Requirement When the looper 1 is at its right point of reversal, there must be a clearance between the looper point crosswise to the sewing direction and the needle center of 3.6 mm. 3,6 mm 54-065 Fig.

  • Page 88: Looper Motion

    Adjustment Looper motion .05.22 Requirement The needle bar position must be the same: a) when the point of the looper, coming from the right hand side, is positioned to the left hand side of the needle and, b) when, after the handwheel has been turned back, the looper point is positioned a) to the right hand side of the needle.

  • Page 89: Final Adjustment Of The Needle Height

    Adjustment Final adjustment of the needle height .05.23 Requirement When the point of the looper advancing from the right reaches the left side of the needle, the top edge of the needle eye must be 1.0 - 1.2 mm below the bottom edge of the looper. Fig.

  • Page 90: Height Of Rear Needle Guard

    Adjustment Height of rear needle guard .05.24 Requirement When the needle bar is at bottom dead center (pin in hole 3), the vertical surface of the needle guard 1 must cover about 2/3 of the needle eye. Fig. 13 - 24 ●...

  • Page 91: Clearance Between The Rear Needle Guard And The Needle

    Adjustment Clearance between the rear needle guard and the needle .05.25 Requirement When the point of the looper, coming from the right hand side, has reached the right hand side of the needle, the needle guard 3 must still be slightly touching the needle. Fig.

  • Page 92: The Looper-Eccentric Guard

    Adjustment The looper-eccentric guard .05.26 Requirement The eccentric must not at any stage of its motion touch the guard 1. Fig. 13 - 26 ● Align the guard 1 (screws 2 which can be reached through the holes) in accordance with the requirement.

  • Page 93: Position Of The Front Needle Guard

    Adjustment Position of the front needle guard .05.27 Requirement When the point of the looper 1, coming from the right hand side, is positioned at the middle of the needle, the needle guard finger 4 1. must have a lateral clearance of 0.3 - 0.5 mm to the needle, 2.

  • Page 94: Needle Thread Puller

    Adjustment Needle thread puller .05.28 Requirement 1. When the needle bar is at its BDC (hole 3), the clearance between the needle thread puller 2 and needle bar frame 3 must be approx. 0.3 mm. 2. The needle thread puller 2 must be able to move freely in the middle of the face slot and not strike against anything at its top and bottom reversal points.

  • Page 95: Basic Setting Of The Needle Thread Regulator And The Thread Guide

    Adjustment Basic setting of the needle thread regulator and the thread guide .05.29 Requirement 1. With the needle bar at its BDC (hole 3), the eye of the needle thread regulator 1 must be at the same height as the hole in the needle thread puller 4. 2.

  • Page 96: Looper Thread Regulators

    Adjustment Looper thread regulators .05.30 Requirement 1. The front edge of the thread regulator 1 must be at a distance of 29 mm to the needle plate cutout, and be centered with respect to the fork of the looper thread puller 5. 2.

  • Page 97: Looper Thread Puller

    Adjustment Looper thread puller .05.31 Requirement With the needle bar at its TDC (hole 1), both eyes of the looper thread puller 1 must be positioned at the front edge of the thread regulator 4. Fig. 13 - 31 ● Bring the needle bar to its TDC. ●...

  • Page 98: Top Feed And Presser Foot Pressure

    Adjustment Top feed and presser foot pressure .05.32 Requirement The pressure exerted by the top feed and the presser foot must be adjusted so that the workpiece is transported optimally at any sewing speed. Fig. 13 - 32 ● Adjust presser foot pressure according to the requirement with screw 1 (nut 2). ●...

  • Page 99: Adjusting The Thread Trimmer

    Adjustment Adjusting the thread trimmer Only on the PFAFF 3801-3/071 and -11/071. Preadjusting the thread catcher .06.01 Requirement 1. The point of the thread catcher 4 must be at a distance of 32.5 - 33 mm to the front edge of the mounting plate 1.

  • Page 100: Ball Pin Position

    Adjustment Ball pin position .06.02 Requirement When it is positioned vertically, the ball pin 1 must 1. be centered with respect to the drive dog 5, and 2. have a distance of 0.5 mm to the bottom of the drive dog 5. Fig.

  • Page 101: Thread Catcher Position With Respect To Needle

    Adjustment Thread catcher position with respect to needle .06.03 Requirement With the thread trimmer in its resting position, the point of the thread catcher 4 must be at a distance of 7 mm to the center of the needle. 7 mm Fig.

  • Page 102: Thread Catcher Guard

    Adjustment Thread catcher guard .06.04 Requirement 1. When the thread trimmer is in the cutting position, the guide roller 3 must be centered in the recess of the guard cam 2. 2. When the thread trimmer is in the basic position, there must be a distance of 0.5 - 1 mm between the guard cam 2 and the guide roller 3.

  • Page 103: Tension Release

    Adjustment Tension release .06.05 Requirement When the cylinder is fully actuated, there must be a distance of approx. 0.5 mm between the upper edge of the elongated hole in plate 1 and the guide studs 3. Fig. 13 - 37 ●...

  • Page 104: Trimmer Test

    Adjustment Trimmer test .06.06 Requirement 1. The point of the thread catcher 2 must securely take hold of the looper thread and the back part of the needle thread loop. 2. The threads must not be damaged when the cover plate 1 is removed. 3.

  • Page 105: Adjusting The Tape Feeding Device

    Adjustment Adjusting the tape feeding device Adjusting the knife .07.01 Requirement With cylinder 6 extended, the edge of the inside blade 2 should be approx. 0.1 mm above the edge of the outside blade 7. Cutting position Basic position 48-07 Fig.

  • Page 106: Setting The Evaluation Function Of The Photoelectric Beam

    Adjustment Setting the evaluation function of the photoelectric beam .07.02 Requirement 1. If the bridle tape 2 is in the detection range of the photoelectric beam 3 (regulate air jet on, valve Y52 activated), none of the LEDs 4 should be on. 2.

  • Page 107: Adjusting The Air Jets

    Adjustment Adjusting the air jets .07.03 Requirement 1. Open throttle 1 far enough to press bridle tape 5 over air jet 6 into the range of the photoelectric beam 7, so that the switch status of the photoelectric beam is displayed (LEDs 8 are not on).

  • Page 108: Fastening The Light Guides

    Adjustment Fastening the light guides .07.04 Fig. 13 - 42 The light guides 1 are led into the corresponding holes on the Tape feeding device and clamped with bolts 2, see magnified illustration A. To release the clamping, the bolts 2 must be turned by 90º, see magnified illustration B. For cutting or shortening the light guides 1, we recommend the use of a suitable knife (part no.

  • Page 109: Parameter Settings

    Adjustment Parameter settings Overview of the parameter functions .08.01 After the machine has been switched on, by pressing the appropriate function the input mode is called up, in which the individual parameters can be called up directly. With a code it is possible to protect all or individual parameter groups against unauthorised access.

  • Page 110: Example Of A Parameter Input

    Adjustment Example of a parameter input .08.02 ● Switch on the machine. ● Call up the input mode. ● e.g. call up parameter "113" (switch beep tone for section change on/off) ● e.g. switch beep tone on (value "ON"). ● Conclude the input. 13 - 47...

  • Page 111: List Of Parameters

    Max. speed forwards at each OFF - ON pedal position Machine configuration 1 - 2 1 = 3801-3/07, 3801-3/071 2 = 3801-11/071 (with tape feed) Knee switch for section change OFF - ON (in the seam programs 3 -49) Length of tape feed section (mm)
  • Page 112 Group Parameter Description Setting range value Maximum speed 100 - 3500 3200 Speed soft start 100 - 3500 1500 Soft start stitches 0 - 15 P-quota speed controller 1 - 50 I-quota speed controller 0 - 100 P-quota position controller 1 - 50 D-quota position controller 1 -100...

  • Page 113: Sewing Motor Errors

    Group Parameter Description Setting range value Right of access service 0 - 1 Right of access function group 700 0 - 1 Right of access function group 800 0 - 1 Right of access program creation 0 - 1 Enter access code 0 - 9999 3800 Sewing motor errors...

  • Page 114: Explanation Of The Error Messages

    Adjustment Explanation of the error messages Message Description E001 System error E002 Sewing motor E002/BB/xxx BB = 20: Time-out 02: Position forwards 03: Position in reverse 05: Position by shortest path 09: Write parameter 10: Speed 0A: Reset stitch counter 0B: Stop after xxx stitches 30: Time-out for increasing speed 31: Time-out for uncertain positioning...

  • Page 115: Table Of Inputs

    Adjustment Table of inputs not assigned not assigned not assigned Start inhibitor not assigned Knee switch not assigned not assigned not assigned not assigned not assigned not assigned not assigned not assigned Light barrier tape feed (on 3801-11/071) Reference for fullness adjustment Table of outputs Raise sewing foot (O1.1 and O1.2) Thread trimmer (O2.1 and O2.2)

  • Page 116: Service Menu

    Motors After this function has been called up, the stepping motors for fullness and for the sewing motor can be moved. On the PFAFF 3801-11/071 the stepping motor of the tape feed unit can also be moved. Basic position of the stepping motor After this function has been called up, the basic position of the fullness stepping motor can be changed.

  • Page 117: Carry Out A Cold Start

    Adjustment Carry out a cold start ● Switch on the machine. ● Call up the input mode. ● Call up the service menu. ● Carry out a cold start. After a cold start all programmed values are set back to their status at the time of delivery.

  • Page 118: Internet Update Of The Machine Software

    Adjustment Internet update of the machine software The machine software can be updated with PFAFF flash programming. For this purpose the PFP boot program and the appropriate control software for the machine type must be installed on a PC. To transfer the data to the machine, the PC and the machine control unit must be connected with an appropriate null modem cable ( part no.

  • Page 119: Wearing Parts

    A detailed parts list for the complete machine is included with the accessories. In case of loss, the parts list can be downloaded from the internet address www.pfaff-industrial.com/pfaff/en/service/downloads As an alternative to the internet download the parts lists can also be ordered in book form under part no.
  • Page 120 Pneumatics-switch diagram 91-196 284-95 Version 26.08.05 Schaltpläne 15 - 1...

  • Page 121: Circuit Diagrams

    Circuit diagrams Circuit diagrams Reference list for circuit diagrams Controller Quick P 320MS Control panel T1 Sewing head identification Light barrier SM 2 (only on 3801-11/071) Initiator SM1, reference Sewing lamp Sewing motor Stepping motor tape feed (only on 3801-11/071) Stepping motor fullness adjustment Main switch Knee switch (program switching)
  • Page 122 Circuit diagrams 91-191 495-95 Version 01.09.05 Page 1 15 - 3...
  • Page 123 Circuit diagrams 91-191 495-95 Page 2 Version 01.09.05 15 - 4...
  • Page 124 Circuit diagrams 91-191 495-95 Version 01.09.05 Page 3 15 - 5...
  • Page 125 91-191 495-95 Circuit diagrams Page 4 Version 01.09.05 15 - 6...
  • Page 126 PFAFF Industriesysteme und Maschinen AG Hans-Geiger-Str. 12 - IG Nord D-67661 Kaiserslautern Telefon: +49 - 6301 3205 - 0 Telefax: +49 - 6301 3205 - 1386 E-mail: info@pfaff-industrial.com Gedruckt in der BRD / Printed in Germany / Imprimé en la R.F.A. / Impreso en la R.F.A...

This manual is also suitable for:

3801-3/0713801-11/071

Table of Contents