Pfaff 1540 User Manual
Page 4
2
Stitching off
34. Adjustment of needle threader
64
35. Adjustment of bobbin winder stop
66
36. Adjustment of bobbin thread tension
67
37. Adjustment of needle thread tension
68
38. Adjustment of thread check spring stroke
70
39. Adjustment of equal stitch length for left and right buttonhole seams
72
40. Adjustment of equal forward and reverse stitch length
73
(for forward and reverse controlled utility stitches)
41. Making up a sewing sample
74
Repair Instructions
42. Removing and fitting the needle thread tension
75
43. Changing the pressure spring in the handwheel release
76
44. Removing and fitting the sewing hook
78
45. Cleaning and oiling the machine
78
46. Changing the toothed belt
80
47. Adjusting the arm shaft crank
82
48. Changing the bevel gears
84
49. Changing the motor
88
50. Changing the motor circuit board on motor types UUS 390 and UUS 393
90
51. Changing the carbon brushes on motor types UUS 390 and UUS 393
91
52. Changing the motor pinion
92
53. Changing the motor toothed belt
93
54. Changing the circuit board in foot control AE 010
94
55. Changing the mains connections in foot control AE 010
95
Safety test
56. Electrical safety test
96
57. Electrical safety test with ABB Metrawatt M 5013
96
58. Simulated leakage current measurements of complete motors with ABB Metrawatt M 5013 99
59. Measures required in case of incorrect readings
99