Duerkopp Adler 271 Panduan Petunjuk Pengoperasian - Halaman 16
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4. Maintenance
4.1 Cleaning and Checking
18
Note
With a correct regulator setting the thread controller
spring 5 will be pulled approx. 0.5 mm down out of its
upper end position when the thread loop passes the
maximum hook girth, that is, when the greatest amount of
thread is required. See illustration.
The dimension 0.5 mm is a guideline. It can be greater or
smaller depending on the thread controller spring tension.
- Risk of Injury -
During cleaning and lubrication of the machine it is
essential to turn the main switch off.
The maintenance work must be conducted at the latest
after the number of operating hours shown in brackets ( ).
Other maintenance intervals may result when working
special materials.
A machine kept clean protects against malfunctions!
–
Remove sewing dust from under the needle plate.
(8 hours)
This is best done with a compressed air pistol.
–
Remove the sewing dust collecting between the
transporter web. (8 hours)
Remove the needle plate for this.
–
Clean the area below the bobbin brake spring 3 of
sewing dust. (8 hours)
Slightly raise the spring 3 e.g. with a needle leicht
and blow out.
–
Clean the sewing dust from the motor ventilation
sieve. (8 hours)
–
If the machine is equipped with the compressed air
maintenance unit 5 check the oil and water levels.