Cleaning - Bernina activa 125 Service Manual

24 Cleaning

Remove the covers and clean.
Attention!
Never use alcohol, petrol, spirits, or any other acid type of
liquid.
When cleaning covers it can happen that they will become
electrostatically charged. To clean the covers, a liquid
which is also used in the office equipment industry with an
anti-
static agent can be used.
We use and recommend the surface cleaner SURFACE
CLEAN from BASF Ltd. This liquid builds up a protected
film against static electricity and is suitable for both compo-
site materials as well as metal parts.
Parts on the inside
Behind the covers on the inside of the machine a lot of
dust, fluff, thread and fabric remnants can accumulate,
which can cause malfunctions to occur:
Especially in the region of the head frame in the area of
the take-up lever,
main shaft (behind the balance piece) and
the tension unit.
In the region of the free-arm, in the area of the
bobbin case,
feed-dog,
hook,
hook driver,
hook race,
base shaft (lifter and advance eccenter) and
the toothed rack.
Also affected is the transmission drive system, where belt
residue can accumulate.