Cleaning - Bernina B 590 Service And Maintenance Manual

1.7 Cleaning

Remove and clean the covers.
Electrostatic charging may occur during cleaning. To prevent this, use antistatic office-equipment cleaning
agents.
We use and recommend BASF's SURFACE CLEAN surface cleaner.
It forms a protective film against static electricity, and is suitable for both plastic and metallic surfaces.
IMPORTANT!
Never use alcohol, benzine, spirits or any other corrosive fluids, or abrasive pastes or
detergents!
Inside parts:
•
Dust, lint, thread and fabric remnants can accumulate inside the machine behind the covers. and
may lead to malfunctions.
Head frame area:
•
Thread take-up lever (joints), needle bar, needle bar support, and needle bar coupling.
•
Main shaft (behind needle drive balance piece), synchronizer.
•
Between the upper-thread tension discs, all along the thread path, incl. thread redirections
Freearm and base area:
•
Bobbin carrier (under tension spring)
•
Feed dog
•
Hook/hook sensors
•
Lower thread indicator
•
Base shaft (lift-/advance cams)
•
In the thread-cutting mechanism
Drive area:
•
Drive motor/carbon dust
•
Toothed-belt discs, and motor pulley
•
Hook drive
Electronics area
•
All sensors, light barriers, switches, electronic components
BERNINA International AG Seestrasse 161 CH-8266 Steckborn
DRAFT – VERSION
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