8 | Help with faults
BÜCHI Labortechnik AG
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Operation Manual Rotavapor® R-300
8.2
Resetting safety functions
8.2.1
Resetting overheat safety cut-out on heating bath
The overheat safety cut-out trips if oil is used in the Heating Bath B-301 or the
temperature control fails. In that case, the power supply for the heating bath is
switched off. If the wrong heating fluid has been used for the Heating Bath B-301, the
overheat safety cut-out can be reset.
The overheat safety cut-out is on the underneath of the heating bath.
CAUTION
Risk of skin burns from hot components
u
Do not touch hot components unless wearing suitable protective gloves.
1
1
2
Fig. 50: Undersides of Heating Baths B-301 and B-305
1
Overheat safety cut-out on B-305
2
Overheat safety cut-out on B-301
u
Switch off the device.
u
Unplug the power supply for the heating bath and rotary drive unit.
u
Allow the heating bath to cool down then empty it.
u
Using a narrow object or screwdriver, press the red pin (1)/(2) on the underside of
the heating bath.
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The overheat safety cut-out is reset.
