7. Function: Stirring
The stirring function is turned ON/OFF by turning the speed control knob. The speed is adjusted
with the knob (from 100 to 1500 rpm in 10 rpm intervals). When the heating and stirring functions
are switched ON at the same time, the LED screen displays the set temperature value for 5 seconds
first and then shifts to the real temperature value.
Turn the unit ON by pressing the ON/OFF switch.
•
Adjust the stirring speed by slowly turning the speed control towards the desired value.
•
When the stirring function is ON, the Stir LED lights up during the entire operation.
•
At the end of the operation, turn OFF the stirring function by turning the speed control all the
•
way to the left.
Turn the unit OFF by pressing the ON/OFF switch.
•
8. Faults
Instruments cannot be turned ON.
•
➢ Check whether the power cable is plugged in.
➢ Check whether the fuse is broken or loose.
Stir speed cannot reach the set point.
•
➢ Excessive medium viscosity may cause abnormal motor speed reduction.
Unit cannot be powered OFF when pressing the ON/OFF switch.
•
➢ Check if the residual heat warning function is still ON and the hotplate temperature is
above 50ºC (the LED screen still works and "Hot" flashes on the LED screen).
If these faults are not resolved, please contact the manufacturer/supplier.
9. Maintenance and Cleaning
Proper maintenance can keep instruments working properly and lengthen their lifetime.
•
Do not spray cleanser onto the instrument when cleaning.
•
Unplug the power line when cleaning.
•
Only use recommended cleansers:
•
11