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Pfaff
Sewing Machine
1525
Pfaff 1525 User Manual
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11 - 25
Adjustment
11
.04.22
Re-engaging the slip-clutch
Clutch
1
is adjusted at the works. In the case of a thread jamming, clutch
1
will
disengage, in order to avoid damage to the hooks.
The following describes how to re-engage clutch
1
.
Fig. 11 - 21
●
Remedy jammed thread fault.
●
Hold clutch
1
firmly, as shown in
Fig. 11-21a
, and turn the balance wheel until clutch
1
re-engages.
1
62
64
Table of Contents
Instruction Manual
1
Table of Contents
3
Contents
4
Safety
6
Regulations
6
General Notes on Safety
6
Safety Symbols
7
Important Notes for the User
7
Notes for Operating and Technical Staff
8
Operating Staff
8
Technical Staff
8
Danger Warnings
9
Proper Use
10
Specifications
11
Pfaff 1525, Pfaff 1526
11
Disposal of Machine
13
Transportation, Packing and Storage
14
Transportation to Customer's Premises
14
Transportation Inside Customer's Premises
14
Disposal of Packing Materials
14
Storage
14
Explanation of Symbols
15
Controls
16
On/Off Switch
16
Keys on Machine Head
16
Pedal
17
Knee Switch
17
Presser Foot Fixing Key
18
Reverse-Feed Control
19
Edge Trimmer -731/02
19
Secondary Needle-Thread Tension
20
Bobbin-Thread Supply Monitor -926/06
21
Bobbin Thread Control by Stitch Counting -926/07
21
Installation and Commissioning
22
Installation
22
Adjusting the Table Height
22
Fitting the Tilt Lock
23
Tensioning the V-Belt
23
Fitting the Upper V-Belt Guard
24
Fitting the Bottom V-Belt Guard
24
Fitting the Reel Stand
25
Fitting the Synchroniser
25
Connecting the Earth Cables
26
Table Top Cutout
27
Commissioning
28
Switching the Machine On/Off
28
Setting up
29
Inserting the Needle on the PFAFF 1525
29
Inserting the Needles on the PFAFF 1526
30
Winding the Bobbin Thread, Regulating the Winder Tension
31
Bobbin-Changing/Threading, and Regulating the Bobbin Thread Tension
32
Threading Needle Thread and Regulating Its Tension on the PFAFF 1525
33
Threading Needle Threads and Regulating Tensions on the PFAFF 1526
34
Setting Stitch Counting Function for Bobbin Thread Monitoring
35
Direct Input of Number of Stitches on the Control Panel
35
Entering the Number of Stitches Using the Teaching Function
35
Care and Maintenance
36
Cleaning the Hook Area
36
Oiling the Hook
37
Checking/Adjusting the Air Pressure
38
Cleaning the Air Filter of the Air-Filter/Lubricator
38
Adjustment
39
Tools, Gauges and Other Equipment
39
Notes on Adjustment
39
Abbreviations
39
Adjusting the Basic Machine
40
Adjusting the Synchronizer
40
Balance Weight
41
Neutral Position of the Unison Feed
42
Feeding Motion of the Unison Feed
43
Lifting Motion of the Bottom Feed Dog
44
Bottom Feed-Dog Height
46
Needle in Needle-Hole Centre
47
Feeding-Stroke Difference
48
Needle Height (Preliminary Adjustment)
49
Bobbin-Case Opener Stroke
52
Top Feed Stroke
53
Top Feed Lifting Motion
54
Clearance between Lifting Presser and Needle Plate
55
Bobbin Winder
56
Thread Check Spring and Thread Regulator on the PFAFF 1525
57
Speed Reduction When the Stroke Is Increased
59
Needle-Thread Tension Release
60
Presser Foot Pressure
61
Lubrication
62
Re-Engaging the Slip-Clutch
63
Adjusting the Edge Trimmer -731/02
64
Neutral Position of Knife
64
Knife Stroke
65
Cutting Stroke
66
Actuating Lever
67
Knife Height
68
Knife Position in Sewing Direction
69
Knife Position Crosswise to Sewing Direction
70
Adjusting the Thread Trimmer 900/81
71
Resting Position of Roller Lever/Radial Position of Control Cam
71
Thread Catcher Height
72
Thread Catcher Position
73
Knife Height
74
Knife Pressure
75
Bobbin-Thread Retaining Spring
76
Thread-Catcher Transmission Crank (Only on PFAFF 1526 )
77
Manual Cutting Test
79
Adjusting the Thread Trimmer 900/82
80
Position of the Control Cam
80
Thread Catcher and Knife Height
81
Knife Mounting Support
82
Knife Cutting Position
83
Thread Catcher Position
84
Readjustment of the Control Cam
85
Knife Pressure
86
Bobbin-Thread Retaining Spring
87
Manual Cutting Test
88
Adjusting the Bobbin-Thread Supply Monitor -926/06
89
Parameter Settings
90
Selecting and Changing Parameters
90
List of Parameters
91
Wearing Parts
93
4
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Pfaff 1525 Specifications
General
Brand
Pfaff
Model
1525
Category
Sewing Machine
Language
English
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