Pfaff 1525

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11 - 23

Adjustment

11.04.20 Presser foot pressure

Requirement

The material must be reliably fed, even at the highest sewing speed.

● Adjust screw 1 according to Requirement.

Fig. 11 - 19a

Main Page

Instruction Manual1
Table of Contents3
Contents4
Safety6
Regulations6
General Notes on Safety6
Safety Symbols7
Important Notes for the User7
Notes for Operating and Technical Staff8
Operating Staff8
Technical Staff8
Danger Warnings9
Proper Use10
Specifications11
Pfaff 1525, Pfaff 152611
Disposal of Machine13
Transportation, Packing and Storage14
Transportation to Customer's Premises14
Transportation Inside Customer's Premises14
Disposal of Packing Materials14
Storage14
Explanation of Symbols15
Controls16
On/Off Switch16
Keys on Machine Head16
Pedal17
Knee Switch17
Presser Foot Fixing Key18
Reverse-Feed Control19
Edge Trimmer -731/0219
Secondary Needle-Thread Tension20
Bobbin-Thread Supply Monitor -926/0621
Bobbin Thread Control by Stitch Counting -926/0721
Installation and Commissioning22
Installation22
Adjusting the Table Height22
Fitting the Tilt Lock23
Tensioning the V-Belt23
Fitting the Upper V-Belt Guard24
Fitting the Bottom V-Belt Guard24
Fitting the Reel Stand25
Fitting the Synchroniser25
Connecting the Earth Cables26
Table Top Cutout27
Commissioning28
Switching the Machine On/Off28
Setting up29
Inserting the Needle on the PFAFF 152529
Inserting the Needles on the PFAFF 152630
Winding the Bobbin Thread, Regulating the Winder Tension31
Bobbin-Changing/Threading, and Regulating the Bobbin Thread Tension32
Threading Needle Thread and Regulating Its Tension on the PFAFF 152533
Threading Needle Threads and Regulating Tensions on the PFAFF 152634
Setting Stitch Counting Function for Bobbin Thread Monitoring35
Direct Input of Number of Stitches on the Control Panel35
Entering the Number of Stitches Using the Teaching Function35
Care and Maintenance36
Cleaning the Hook Area36
Oiling the Hook37
Checking/Adjusting the Air Pressure38
Cleaning the Air Filter of the Air-Filter/Lubricator38
Adjustment39
Tools, Gauges and Other Equipment39
Notes on Adjustment39
Abbreviations39
Adjusting the Basic Machine40
Adjusting the Synchronizer40
Balance Weight41
Neutral Position of the Unison Feed42
Feeding Motion of the Unison Feed43
Lifting Motion of the Bottom Feed Dog44
Bottom Feed-Dog Height46
Needle in Needle-Hole Centre47
Feeding-Stroke Difference48
Needle Height (Preliminary Adjustment)49
Bobbin-Case Opener Stroke52
Top Feed Stroke53
Top Feed Lifting Motion54
Clearance between Lifting Presser and Needle Plate55
Bobbin Winder56
Thread Check Spring and Thread Regulator on the PFAFF 152557
Speed Reduction When the Stroke Is Increased59
Needle-Thread Tension Release60
Presser Foot Pressure61
Lubrication62
Re-Engaging the Slip-Clutch63
Adjusting the Edge Trimmer -731/0264
Neutral Position of Knife64
Knife Stroke65
Cutting Stroke66
Actuating Lever67
Knife Height68
Knife Position in Sewing Direction69
Knife Position Crosswise to Sewing Direction70
Adjusting the Thread Trimmer 900/8171
Resting Position of Roller Lever/Radial Position of Control Cam71
Thread Catcher Height72
Thread Catcher Position73
Knife Height74
Knife Pressure75
Bobbin-Thread Retaining Spring76
Thread-Catcher Transmission Crank (Only on PFAFF 1526 )77
Manual Cutting Test79
Adjusting the Thread Trimmer 900/8280
Position of the Control Cam80
Thread Catcher and Knife Height81
Knife Mounting Support82
Knife Cutting Position83
Thread Catcher Position84
Readjustment of the Control Cam85
Knife Pressure86
Bobbin-Thread Retaining Spring87
Manual Cutting Test88
Adjusting the Bobbin-Thread Supply Monitor -926/0689
Parameter Settings90
Selecting and Changing Parameters90
List of Parameters91
Wearing Parts93

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