Specifications

seconds. After five seconds the display will
automatically return to indicating actual speed
and the SET light will go out. To stop the stirring
action without changing your setpoint, press the
knob once. To resume stirring at the set speed,
press the knob again.
If you want to ensure that the unit will not start
to stir if the knob is inadvertently pressed, turn
the speed control knob until the display indi-
cates the word OFF.
Setting the Temperature
Your MIRAK 4-place stirring hot plate has an
electronic closed-loop feedback control which
will accurately maintain temperature setpoints
from 40°C through 540°Con the 240 volt and
208 volt models. The 240 volt 4-place stirring
hot plates will maintain temperatures from 40°C
through 370°C. An unloaded stirring hotplate will
heat to maximum temperature in just 8 minutes.
A HOT light on the front panel will illuminate
whenever the top surface temperature exceeds
50°C. The temperature may be controlled either
at the top plate by the internal Type K thermo-
couple sensor, or in the solution using an acces-
sory ungrounded Type K thermocouple probe.
(A 6” or 10” stainless steel general purpose
14
OPERATION
Stirring Speed Guide
Unit Flask Size Stirbar Size Amount of Viscosity Maximum Speed*
Solution
4-place MIRAK 1 liter 2” 800 ml water 1200 rpm
4-place MIRAK 2 liter 2” 1800 ml water 1200 rpm
4-place MIRAK 1 liter 2” 1000 ml cooking oil 700 rpm
4-place MIRAK 500 ml 2” 350 ml 30 wt. motor oil 1100 rpm
* Maximum speed obtained without the stir bar loosing coupling with the magnet.
(For speed stability and display accuracy please refer to the Operating Specifications.)