Wear-And-Tear-Parts Definition; Non-Hour-Related Parts - Bernina 330 Service And Maintenance Manual

8.4 Wear-and-Tear-Parts Definition

Explanations:
• The service life of the machine was defined for household use.
• In the case of intensive use for which the machine was not designed, increased wear-and-tear of parts
cannot be ruled out.
• In order to ensure continuously defect-free operation of the sewing machine, BERNINA recommends
replacing the parts according to the table (Item 8.4.2), once the sixth Maintenance interval is reached.
• The customer has a right to the replaced parts, with the exception of replaced electronic components,
should these be repaired by BERNINA.
• The defined wear-and-tear parts are subject to a charge.
• The Maintenance work to be carried out is listed on the Maintenance checklist.

8.4.1 Non-hour-related parts

Depending upon purpose, handling, climatic conditions and use, the following parts cannot be defined in time
terms and are therefore to be individually assessed or replaced when signs of wear and tear appear and/or
functionality is impaired.
• Sensors and actuators
• Electronic components
• Screen
• Sewing light / back lighting
• Regulator spring
• Stitch plate (scratch marks of needle around stitch hole).
• Foot control cable and cable plate
• Cables and wires in general (squashed, interrupted etc.)
• Feed-dog (blunt or worn teeth tips)
• Stitch plate frame
• Covers, casings (cracked/worn threaded holes, tears, scratch marks and signs of wear and tear)
• Presser feet (scratch marks, wear)
• Thread cutter
• Threader head.
• Pressure springs and tension springs
• Thread take-up crank / needle bar drive
• Needle bar and needle bar support
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