Related Manuals for Pfaff 3734 - 2/01
Summary of Contents for Pfaff 3734 - 2/01
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Page 1: Instruction Manual
3734 - 2/01 Instruction Manual This instruction manual applies to machines from the following serial numbers onwards: # 2207198 296-12-18 352/002 Betriebsanleitung engl. 09.2000... - Page 2 The reprinting, copying or translation of PFAFF Instruction Manuals, whether in whole or in part, is only permitted with our previous authorisation and with written reference to the source. G.M. PFAFF KAISERSLAUTERN I N D U S T R I E M AS C H I N E N AG...
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Page 3: Table Of Contents
Danger ........................1 - 4 Proper use ......................... 2 - 1 Specifications ......................3 - 1 PFAFF 3734-2/01 ......................3 - 1 Model, needles and threads ..................3 - 1 Disposal of machines ....................4 - 1 Transport packaging and storage ................5 - 1 Transport to the customer’s premises ................ -
Page 4: Contents
Contents Contents ................Chapter - Page Preparation ........................ 9 - 1 Inserting the needle ....................9 - 1 Winding the bobbin thread, adjusting the thread tension ..........9 - 2 Removing / Inserting the bobbin case ................. 9 - 3 Threading the bobbin case / Adjusting the bobbin thread tension ........ - Page 5 Contents Contents ................Chapter - Page Adjusting the thread trimmer -900/53 ..............12 - 20 .05.01 Removing the scissors ..................... 12 - 20 .05.02 Control cam to bobbin opener and tripping lever ............12 - 21 .05.03 Radial position of the tripping lever ................12 - 22 .05.04 Engaging solenoid .....................
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Page 6: 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, observe also 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 organisations are to be strictly adhered to! General notes on safety... -
Page 7: 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 8: 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: always observe the Notes on Safety in the Instruction Manual! never use any working methods which could limit the level of safety in using the machine! -
Page 9: 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 or in the needle plate area while adjusting the machine settings! Objects can become trapped or be slung away! Danger of injury! -
Page 10: Proper Use
Proper use Proper use The PFAFF 3734-2/01 is a high-speed, single needle, postbed sewing machine (post to the right of the needle) with forwards and reverse feeding feed-wheel and roller presser. This machine is used for sewing lockstitch seams in the clothing industry. -
Page 11: Specifications
Specifications Specifications PFAFF 3734-2/01 Stitch type: ....................301 ( lockstitch ) Handwheel eff. dia....................65 mm Roller presser clearance: .................... 9 mm Clearance width: ....................245 mm Clearance height: ....................115 mm Post height: ......................180 mm Sewing head dimensions: Length: ...................... -
Page 12: Disposal Of Machines
Disposal of machines Disposal of machines The proper disposal of 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. The machine is to be disposed of in accordance with the locally valid environmental protection regulations. -
Page 13: Transport Packaging And Storage
Transport packaging and storage Transport packaging and storage Transport to the customer’s premises Within Germany, complete machines (with table and motor) are delivered without packaging. Machines without a table (sewing head with motor only) and machines for export are packaged. Transport within the customer’s premises The manufacturer bears no liability for transport within the customer’s premises or to the individual locations of use. -
Page 14: Explanation Of The Symbols
Explanation of the symbols Explanation of the symbols In the following section of this Instruction Manual, certain tasks or important pieces of information are accentuated by symbols. The symbols used have the following meanings: Note, information Cleaning, care Lubrication, greasing Servicing, repairing, adjustment, maintenance (only to be carried out by specialist personnel) 6 - 1... -
Page 15: Controls
Controls Controls On/off switch Turn the machine on/off by turning On/Off switch 1. Fig. 7 - 01 Pedal Neutral position Sewing Raise roller presser Trim thread and raise roller presser 1 + 4 = Variable application of fullness Fig. 7 - 02 7 - 1... -
Page 16: Knee Switch
Controls Knee switch By operating knee switch 1 it is possible to select 2 pre-set values for fullness. Fig. 7 - 03 Lever for lifting the roller presser The roller presser is raised by turning lever 1. Fig. 7 - 04 7 - 2... -
Page 17: Control Panel
Controls Control panel The control panel consists of the display 1 and a row of function keys. Fig. 7 - 05 Displays on the screen .05.01 In sewing mode ( LED in the Parameter input key is off ) the actual values are shown on the screen when the corresponding function keys are operated. - Page 18 Controls Starttack on/off With this key the starttacks can be switched on or off. When the LED is on, starttacks are sewn. Endtack on/off With this key the endtacks can be switched on or off. When the LED is on, endtacks are sewn. Backtack suppression Press the key once: starttacks are not sewn.
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Page 19: 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, it must be ensured that the frame and the table top which you intend to use can hold the weight of the machine and the motor, even while sewing. -
Page 20: Fitting The Tilt Lock
Mounting and commissioning the machine Fitting the tilt lock .01.02 Screw on tilt lock parts 1 and 2, provided in the accessories, using screws 3 and 4. Do not operate the machine without tilt lock 1! Danger of crushing between sewing head and table top! Fig. -
Page 21: Mounting The Synchronizer
Mounting and commissioning the machine Mounting the synchronizer .01.04 Slide synchronizer 1 onto the shaft. Tighten screws 2 slightly. Plug the synchronizer plug into the electrical socket of the control box. Adjust the synchronizer ( see chapter 12.04.01 Adjusting the synchronizer ). Fig. -
Page 22: Attaching The Earthing Wire / Connecting The Plug Connections
Mounting and commissioning the machine Attaching the earthing wire / connecting the plug connections .01.06 Fig. 8 - 06 Fig. 8 - 07 Screw the earthing wires from the sewing head, the main switch and the control box to the stand. Insert all plug connections in the control box as designated. -
Page 23: 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 Turn the machine off! -
Page 24: Winding The Bobbin Thread, Adjusting The Thread Tension
Preparation Winding the bobbin thread, adjusting the thread tension Fig. 9 - 02 Place an empty bobbin 1 onto bobbin winder spindle 2. Thread the bobbin in accordance with Fig. 9 - 02 and wind it clockwise around bobbin 1 a few times. -
Page 25: Removing / Inserting The Bobbin Case
Preparation Removing / Inserting the bobbin case Turn the machine off! 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 and close the post cap. Fig. -
Page 26: Threading The Bobbin Case / Adjusting The Bobbin Thread Tension
Preparation Threading the bobbin case / Adjusting the bobbin thread tension Insert the bobbin into the bobbin case 1. Pass the thread through the slot under spring 2. Pass the thread through the notch. Adjust the thread tension by turning screw 3. -
Page 27: Threading The Needle Thread / Adjusting The Needle Thread Tension
Preparation Threading the needle thread / adjusting the needle thread tension Fig. 9 - 05 Switch off the machine! Thread needle thread as shown in Fig. 9-05. Adjust the needle thread tension by turning knurled screws 1 and 2. 9 - 5... -
Page 28: Setting The Stitch Length / Fullness
Preparation Setting the stitch length / fullness The stitch length is determined by setting the feed strokes of the roller presser and feed wheel. To apply fullness the feed stroke of the roller presser must be larger than that of the feed wheel. -
Page 29: Entering The Fullness Range For Pedal Adjustment
Preparation Entering the fullness range for pedal adjustment .06.03 It is possible to pre-set the fullness range which can be selected using the left pedal. Switch on the machine Press the Parameter input key ( LED on ). By pressing Key A select the parameter ”100” with +/-. By pressing Key B select the parameter ”103”... -
Page 30: Entering / Adjusting The Code Number
Preparation Entering / adjusting the code number. Switch on the machine. Press the Parameter input key ( LED on ). Select the required parameter by pressing the plus/minus key. Enter the code number ( factory code setting is ”1493 ). CODE When entering the code number these keys... -
Page 31: Sewing
Sewing Sewing Applying fullness The machine must be installed and connected in accordance with Chapter 8 Installation and Commissioning. Set up the machine, see Chapter 9 Setting up. Switch on the machine, see Chapter 7.01 On / off switch. If necessary change the amount of fullness, see Chapter 9.06.01 Standard stitch length / fullness. -
Page 32: Care And Maintenance
Care and maintenance Care and maintenance Cleaning .............. daily, several times if in continuous use Checking the oil level ( lubricating the head parts ) ........daily before use Lubricating the hook ................daily before use Lubricating the bevel gears ................once a year Cleaning the air filter .................. -
Page 33: Lubricating The Hook
Fig. 11 - 03 Use only oil with a mean viscosity of 22.0 mm /s at 40°C and a density of 0.865 g/cm at 15°C. We recommend PFAFF sewing machine oil Part no. 280-1-120 144. 11 - 2... -
Page 34: Lubricating The Bevel Gears
Use both hands to return the machine to an upright position. Danger of crushing between machine head and table top. We recommend PFAFF hard soap grease with a drop point of approx. 150°C. Part no. 280-1-120 243. 11 - 3... -
Page 35: Adjustment
Adjustment Adjustment Notes on adjustment All following adjustments are based on a fully assembled machine and may only be carried out by expert staff trained for this purpose. Machine covers, which have to be removed and replaced to carry out checks and adjustments, are not mentioned in the text. -
Page 36: Adjusting The Basic Machine
Adjustment Adjusting the basic machine Adjusting the synchronizer .04.01 Requirement When, in the direction of sewing, the descending needle point is at the top edge of the needle plate, the machine must position. Fig. 12 - 01 Switch on the machine and sew a few stitches. Press the Parameter input key ( LED on ). -
Page 37: Positioning The Needle In The Direction Of Sewing
Adjustment Positioning the needle in the direction of sewing .04.02 Requirement The needle must penetrate the middle of the needle hole as viewed in the direction of sewing. Fig. 12 - 02 Move the needle bar frame 1 ( screws 2 and 4 and nut 3 ) in accordance with the requirement. -
Page 38: Positioning The Needle Across The Direction Of Sewing
Adjustment Positioning the needle across the direction of sewing 04.03 Requirement The needle must penetrate the middle of the needle hole as viewed across the direction of sewing. Fig. 12 - 03 Move the feed wheel post 1 ( screws 2, 3 and 4 ) in accordance with the requirement. Screws 4 remain loosened for the following adjustments. -
Page 39: Preadjusting The Needle Height
Adjustment Preadjusting the needle height 04.04 Requirement With the needle bar at TDC there must be approx. 22 mm between the point of the needle and the needle plate. 22 mm Fig. 12 - 04 Move the needle bar 1 ( screw 2 ) in accordance with the requirement without turning it. 12 - 5... -
Page 40: Needle Rise, Hook-To-Needle Clearance, Needle Height And Needle Guard
Adjustment Needle rise, hook-to-needle clearance, needle height and needle guard 04.05 Requirement When the needle bar is positioned at 1.8 mm after b.d.c. 1. The point of the hook must be pointing to the centre of the needle and have a clearance of 0.05 –... - Page 41 Adjustment Fig. 12 - 05 Taking the play of the bevel gear into account, tighten screws 2. Remove the adjustment pin from hole 5. Install the retaining collar 6 on bevel gear 7 and tighten screws 1 and 3. Tighten screws 8 on both sides of the post. Align needle guard 9 in accordance with requirement 3.
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Page 42: Bobbin Case Opener Height
Adjustment Bobbin case opener height 04.06 Requirement The top edges of the bobbin case opener 1 and the bobbin case base 3 must be at the same height. Fig. 12 - 06 Move the bobbin case base 1 ( screws 2 ) in accordance with the requirement. 12 - 8... -
Page 43: Bobbin Case Opener Stroke
Adjustment Bobbin case opener stroke 04.07 Requirement When the bobbin case opener presses the bobbin case to the furthest extent, the projection of the bobbin case must protrude 0.3 - 0.5 mm from the rear edge of the needle plate recess. -
Page 44: Feed Wheel Height
Adjustment Feed wheel height 04.08 Requirement The feed wheel must protrude above the needle plate by the height of the teeth ( approx. 0.8 mm ). Fig. 12 - 08 Swing out the roller presser. Loosen screw 1. Turn the eccentric ( screw 3 ) which is accessible through hole 2 in accordance with the requirement. -
Page 45: Clearance Between Roller Presser And Feed Wheel
Adjustment Clearance between roller presser and feed wheel 04.09 Requirement With lever 1 raised the clearance between the roller presser and the feed wheel must be 7 mm. Fig. 12 - 09 Raise lever 1. Move the presser foot bar ( screws 2 ) in accordance with the requirement. Take care to ensure that the roller presser is parallel to the feed wheel. -
Page 46: Roller Presser
Adjustment Roller presser 04.10 Requirements When the roller presser 1 is resting on the feed wheel 5 it must 1. be parallel to the feed wheel 5 when viewed in the direction of sewing, 2. be in the middle of the needle when viewed in the direction of sewing and 3. -
Page 47: Automatic Presser-Foot Lifter
Adjustment Automatic presser-foot lifter 04.11 Requirement When solenoid 1 is activated, lever 3 for the roller presser must drop automatically. Fig. 12 - 11 Move solenoid 1 ( screws 2 ) in accordance with the requirement. Turn the machine on and check the requirement. Turn the machine off. -
Page 48: Retainer
Adjustment Retainer .04.12 Requirement The retainer 3 should just rest on the material, so that the material does not start fluttering during sewing. Fig. 12 - 12 Adjust pin 1( screw 2 ) according to the requirement. 12 - 14... -
Page 49: Tension Release
Adjustment Tension release 04.13 Requirement With lever 1 raised or the automatic presser foot lifter activated, both tension discs 6 must be at least 0.5 mm apart. 0.5 mm Fig. 12 - 13 Raise the roller presser using lever 1. Adjust screw 2 ( nut 3 ) in accordance with the requirement. -
Page 50: Thread Check Spring
Adjustment Thread check spring 04.14 Requirements 1. The motion of the thread check spring 7 must be finished when needle point enters the material ( spring stroke approx. 7 mm ). 2. When the thread loop is at its largest when going around the hook, the thread check spring must raise slightly from the workpiece rack 1. -
Page 51: Bobbin Winder
Adjustment Bobbin winder 04.15 Requirements 1. With the bobbin winder on, the bobbin winder spindle must engage reliably. With the bobbin winder off, the friction wheel 5 must not engage the drive wheel 1. 2. The bobbin winder must turn off automatically when the thread level is approx. 1 mm from the edge of the bobbin. -
Page 52: Roller Presser Pressure
Adjustment Roller presser pressure 04.16 Requirement The material must be fed reliably. There must not be any pressure marks on the material. Fig. 12 - 16 Adjust the roller presser pressure with screw 1 in accordance with the requirement. Screw 1 is underneath a cover. When the pressure of the roller pressure is low, the drop speed of the roller presser can be increased by activating the ROLLER PRESSER DROP SPEED function. -
Page 53: Locking The Set-Value Transmitter
Adjustment Locking the set-value transmitter 04.17 Requirement The pedal for selecting the fullness should be held reliably in every position without binding too much. Fig. 12 - 17 Adjust screw 1 according to the requirement. 12 - 19... -
Page 54: Adjusting The Thread Trimmer -900/53
Adjustment Adjusting the thread trimmer -900/53 Removing the scissors 05.01 Fig. 12 - 18 Open post cover 1 and unscrew post cover plate 2 ( screws 3 ). Loosen screw 4. Swing out bobbin case base 5 by hand and hold it in this position. Remove bolt 6. -
Page 55: Control Cam To Bobbin Opener And Tripping Lever
Adjustment Control cam to bobbin opener and tripping lever 05.02 Requirements 1. Control cam 2 must be touching bearing collar 3. 2. The roller of tripping lever 6 must fall slightly into the path of control cam 2. Fig. 12 - 19 Loosen screws 1 and bring control cam 2 to rest against bearing collar 3. -
Page 56: Radial Position Of The Tripping Lever
Adjustment Radial position of the tripping lever 05.03 Requirement With the tripping lever 3 in resting position, there must be a clearance of 0.3 mm between its roller and the circumference of the control cam 4. Fig. 12 - 20 Bring the needle bar to BDC. -
Page 57: Engaging Solenoid
Adjustment Engaging solenoid 05.04 Requirement With the trimming device swichted on, the field core must still be 1 mm before its lower stop. Fig. 12 - 21 Bring the needle bar to BDC and activate the tripping lever by hand. Push solenoid housing 1 ( screw 2 ) up as far as possible and then move it in accordance with the requirement. -
Page 58: Scissor Drive Lever
Adjustment Scissor drive lever 05.05 Requirement The top edge of screw 1 must protrude approx. 9 mm from the recess on the housing. Fig. 12 - 22 Turn screw 1 ( nut 2 ) in accordance with the requirement. 12 - 24... -
Page 59: Control Cams To The Bobbin Opener And Cutter ( Adjustment With Adjustment Gauge )
Adjustment Control cams to the bobbin opener and cutter 05.06 ( adjustment with adjustment gauge ) Requirements With the needle bar at BDC, both control cams must be positioned in such a way that 1. adjustment gauge 5 can be slid into the grooves of both control cams, 2. -
Page 60: Radial Position Of The Control Cam To The Bobbin Opener ( Adjustment Without Adjustment Gauge )
Adjustment Radial position of the control cam to the bobbin opener 05.07 ( adjustment without adjustment gauge ) Requirement The retracting motion of the bobbin opener must begin when the needle bar is 4 mm after BDC. Fig. 12 - 24 Operate the engaging lever by hand. -
Page 61: Scissor Tripping-Lever In Relation To The Control Cam Of The Scissor
Adjustment Scissor tripping-lever in relation to the control cam of the scissor 05.08 Requirements At the left point of reversal of the rock shaft 3 1. the roller of tripping lever 4 and the roller of back-racking lever 5 must be in the middle of control cam 6 and 2. -
Page 62: Control Cam To Cutter ( Adjustment Without Adjustment Gauge )
Adjustment Control cam to cutter 05.09 ( adjustment without adjustment gauge ) Requirements 1. The cutting motion must begin when the needle bar is 0.6 mm after TDC. 2. There must be a clearance of 9 mm between control cams 2 and 4. 9 mm Fig. -
Page 63: Scissor Return Lever
Adjustment Scissor return lever 05.10 Requirement When the roller of tripping lever 3 is exactly at the point of the trip of control cam 2 the maximum distance between the roller of return lever 4 and control cam 2 must be 0.2 mm. -
Page 64: Scissor Return Control
Adjustment Scissor return control 05.11 Requirements When the point of the trip of control cam 1 is exactly at the roller of tripping lever 2 and trip 3 is touching the beginning of the angular edge of guide plate 5 ( see arrow ) there must be a clearance of approx. -
Page 65: Installing The Scissor
Adjustment Installing the scissor 05.12 Requirements 1. The pin of bolt 4 must protrude into the cam tracks of the scissor halves. 2. The scissor must work with as little lateral play as possible. Fig. 12 - 29 Swing out drive bar 1. Swing out bobbin opener 2 by hand and hold it. -
Page 66: Eccentric Sleeve
Adjustment Eccentric sleeve 05.13 Requirements 1. In its starting position the scissor must be flush with the contour of the needle plate. 2. The scissor must lightly touch the needle plate and the eccentric sleeve 2. Fig. 12 - 30 Loosen screw 1 enough so that eccentric sleeve 2 can still be turned. -
Page 67: Scissor Drive Bar
Adjustment Scissor drive bar 05.14 Requirements 1. In its starting position the scissor must be flush with the needle plate contour. 2. At the TDC of the drive bar 2 there must be a safety clearance of at least 0.3 mm between pin 5 and the top end of the cam guide. -
Page 68: Scissor Function Test
Adjustment Scissor function test 05.15 Requirements 1. The threads must be cut neatly. 2. After being trimmed, the bobbin thread must be held securely by the thread trapper. Fig. 12 - 32 Turn the machine on. Sew a few stitches and turn the on/off switch off. Activate the engaging lever by hand and close the post cover while ensuring that pressure disk 1 is stuck into the post cap. - Page 69 Adjustment As the process continues, both the bobbin thread and the part of the thread loop closest to the scissor which is held by the catching lug must be cut reliably. If the threads are not cut or not cut cleanly check chapter 12.05.14 Scissor drive bar again.
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Page 70: Tension Unit Control
Adjustment Tension unit control Requirement When the roller presser touches the material 1. For materials up to 2 mm one tension unit should be active ( magnet activated ) 2. For materials over 2 mm the second tension unit should be connected ( magnet drops out ) 0.5 mm Fig. - Page 71 Adjustment Fig. 12 - 34 12 - 37...
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Page 72: Parameter Settings
Adjustment Parameter settings Group Parameter Meaning Setting Standard value Pedal-controlled starttacks (I = OFF, II = ON) Reverse (I = OFF, II = ON) Max. stitch length of fullness pedal 0.8 – 6.5 mm 4.0mm Display software version Machine class 1: 1493M 2: 3734 Roller presser drop speed... - Page 73 Adjustment Group Parameter Meaning Setting Standard value Move stepping motor roller presser and feed wheel Display inputs 0123456789ABCDEF 0: Not assigned 1: Knee switch 2: Sewing motor reference position 3: Material thickness 4: Not assigned (E12) 5: Not assigned (E11) 6: Not assigned (E10) 7: Not assigned (E9) 8: Not assigned (E8)
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Page 74: Error Messages
Adjustment Group Parameter Meaning Setting Standard value Brake ramp 1 – 50 Reference position 0 – 191 Time-out 0 – 255 Starting current motor 3 – 10 Antivibration filter 1 – 10 Rotation direction allocation 0 – 1 Reference position correction 0 –... -
Page 75: Carry Out Cold Start
Adjustment Carry out cold start Switch on the machine. Press Parameter input key ( LED on ). Select the required parameter by pressing the plus/minus key. Enter the code number ( factory code setting is ”1493” ) CODE Confirm input. By pressing +/- on the A+B key select parameter ”604”. -
Page 76: Wearing Parts
Wearing parts Wearing parts This list indicates the most important wearing parts. You can request a detailed parts list for the complete machine under parts number 296-12-17 816. 91-176 329-05 91-164 711-91 11-108 093-15 91-173 664-15 91-000 621-15 (2x) 91-150 586-04/001 A* (1,0 ) 91-150 586-04/002 A* (1,2 ) 91-150 574-93/001 A* (1,0 ) 91-150 586-04/003 A* (1,4 ) - Page 77 Wearing parts 91-263 100-90 91-118 308-05 91-119 458-91 91-000 390-05 91-000 928-15 91-010 166-05 91-100 205-15 91-000 529-15 (3x) 91-119 408-05 91-018 293-05 System 134-35 91-119 377-05 91-100 396-15 (2x) 99-137 151-45 91-171 049-05 91-171 042-05 13 - 2...
- Page 78 G.M. PFAFF KAISERSLAUTERN I N D U ST R I E M A S C H I N E N AG Postfach 3020 D-67653 Kaiserslautern Königstr. 154 D-67655 Kaiserslautern Telefon: (0631) 200-0 Telefax: (0631) 17202 E-Mail: info@pfaff-industrial.com Gedruckt in der BRD Printed in Germany Imprimé...