Heathrow Scientific Mini Stirrer 1L Manuel D'instructions page 7

Maintenance
The Mini Stirrer 1L is a maintenance free product. Clean unit only when
it not plugged into an electrical outlet. When necessary, the complete
outside of the unit can be wiped down using a damp cloth and a mild,
non-corrosive detergent. Do not immerse the unit or the power adapter.
Trouble Shooting
Trouble
Stir bar is
not rotating
Magnet
jumping
around
erratically
Opaque
fluid does
not mix
Possible Cause
— Not properly plugged in
— Unit turned off
— Speed setting too low
— Magnet has not coupled
correctly with stir bar
— Missing stirbar
Solution
— Verify unit is
plugged in
— Turn unit on
— Turn speed up
— Turn off and move
container to
recouple stirbar
— Add missing
stirbar
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