7.
Stirring
The function “stirring” of LED digital model is switched on
or off via pushing on/off speed control knob. The speed
range of 100 to 1500 rpm and in steps of 10 rpm.
The function “stirring” of classic model is switched on or
off via rotating speed control knob. The speed range of 0 to
1500 rpm.
8.
Faults
•
Instruments can’t be power ON
-
Check whether the power line is unplugged
-
Check whether the fuse is broken or loose
•
Fault in power on self test
-
Switch OFF the unit, then switch ON and reset
the instruments to factory default setting.
•
Stir speed cannot reach set point
-
Excessive medium viscosity may cause abnormal
speed reduction of the motor
•
Unit cannot be powered off when switched off.
-
Check if the residual heat warning function is still
ON and hotplate temperature is above 50
℃
(the
LED screen still work and “Hot” flash).
If these faults are not resolved, please contact
manufacturer/supplier.
