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Pfaff
Sewing Machine
918
Pfaff 918 Instruction Manual
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Adjustment
12 - 14
12
.05.12
Zeroing the bottom feed (with open gearbox)
Requirement
With the stitch length set at
"0"
the bottom feed dog must not carry out any feeding
motion when the balance wheel is turned.
2
1
3
●
Switch on the machine.
●
While continuously turning the balance wheel, adjust reversing crank
1
(screw
2
) in
accordance with the
requirement.
●
Switch off the machine.
Fig. 12 - 13
55
57
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
9
Proper Use
10
Specifications
11
Disposal of Machine
12
Transportation, Packing and Storage
13
Transportation to Customer's Premises
13
Transportation Inside the Customer's Premises
13
Disposal of Packing Materials
13
Storage
13
Explanation of Symbols
14
Controls
15
Main Switch
15
Keys on the Machine Head (Only on Machines with Quick-Flange Motor)
15
Pedal
16
Lever for Raising Presser Foot
16
Adjustment Lever for Zigzag Stitch and Needle Position
17
Reverse-Feed Key
17
Stitch Length Adjustment Wheel
18
Adjustment Lever of the Underedge Trimmer -771
18
Control Panel (Only on Machines with Quick-Flange Motor)
19
Screen Displays
19
Function Keys
19
Installation and Commissioning
21
Installation
21
Adjusting the Table Height
21
Mounting the Upper V-Belt Guard / Fitting the Machine Cover
22
Fitting the Reel Stand
22
Fitting the Quick-Flange Motor
23
Fit the Belt Guard of the Quick Flange-Motor
23
Connect the Plug-Type Connections and Earth Cable of the Quick-Flange Motor
24
Commissioning
25
Switching the Machine On/Off
25
Basic Setting of the Machine Drive Unit (Only on Machines with Quick-Flange Motor)
26
Mounting/Connecting the Start Inhibitor (Only on Machines with Quick-Flange Motor)
28
Setting up
29
Inserting the Needle
29
Winding the Bobbin Thread; Adjusting the Primary Thread Tension
30
Removing/Inserting the Bobbin Case
31
Threading the Bobbin Case, Adjusting the Thread Tension
31
PFAFF 938 Without Thread Trimmer
31
PFAFF 938 with Thread Trimmer
32
Pfaff 918
32
Threading the Needle Thread / Adjusting the Needle Thread Tension
33
Setting the Zigzag Stitch and the Stitch Position
34
Adjusting the Stitch Length
34
Entering the Start and End Backtacks
35
Sewing
36
Darning Program
37
Counted Seam
37
Error Messages
38
Care and Maintenance
39
Cleaning
39
Lubricating the Hook
40
Oiling the Zigzag Drive
41
Cleaning the Air Filter of the Air-Filter / Lubricator
42
Checking/Adjusting the Air Pressure
42
Adjustment
43
Notes on Adjustment
43
Tools, Gauges and Other Accessories for Adjusting
43
Abbreviations
43
Check and Adjustment Aid
44
Adjusting the Basic Machine
45
Balancing Weight
45
Centering the Needle in the Needle Hole (in Sewing Direction)
46
Parallel Guiding of the Needle Bar
47
Locking Lever
48
Zero Stitch and Zigzag Stitch Scale
49
Centering the Needle in the Needle Hole (Crosswise to Sewing Direction)
50
Zigzag Stitch Width
51
Zigzag Stitch Movement
52
Needle Penetration Symmetry (Left, Centre and Right)
53
Needle Position Adjustment Lever
54
Zero Position of the Bottom Feed Dog (with Closed Gear Box)
55
Zeroing the Bottom Feed (with Open Gearbox)
56
Feeding Motion of the Bottom Feed Dog
57
Lifting Motion of the Bottom Feed Dog
58
Drive Belt in the Gearbox Housing
59
Hook Bearing Bracket
60
Hook Lubrication
61
Pre-Adjusting the Needle Height
62
Needle Rise, Hook-To-Needle Clearance and Bobbin Case Positioning-Finger
63
Final Adjustment of the Needle Height
64
Bobbin Case Opener Position
65
Bobbin Case Opener Motion
66
Bottom Feed Dog Height
67
Presser Foot to Needle Plate Clearance
68
Needle Thread Tension Release (on Machines Without -900/24)
69
Presser Foot Pressure
70
Thread Diverter Pin
71
Limiting the Knee Lever Stroke
72
Knee Lever Play
73
Bobbin Winder
74
Adjusting the Underedge Trimmer -771/04
75
Resting Position of the Knife
75
Knife Height
76
Positioning of the Knife
77
Knife Drive Switch
78
Workpiece Guard
79
Adjusting the Thread Trimmer -900/24
80
Axial Position of the Control Cam
80
Preliminary Adjustment of the Control Cam
81
Position of the Thread Catcher and Cutting Test
82
Readjustment of the Control Cam
83
Needle Thread Tension Release
84
Parameter Settings
85
Selecting the User Level
85
Example of a Parameter Input
86
List of Parameters
87
Reset / Cold Start
88
Explanation of the Error Signals
89
Internet Update of the Machine Software
90
Wearing Parts
91
Circuit Diagrams
93
Other manuals for Pfaff 918
Service Manual
42 pages
Adjustment Manual
54 pages
4
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Pfaff 918 Specifications
General
Brand
Pfaff
Model
918
Category
Sewing Machine
Language
English
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