24   23-03-2009  105446  06 
 
 
 
Caution… 
 Do not use the instrument if the internal fan is out of 
order.  
 The well must be clean before use. 
 
Ensure a free supply of air to the internal fan located at the 
bottom of the instrument.  
The area around the calibrator should be free of draught, dirt, 
flammable substances, etc. 
 
Check the voltage of the power control switch (on/off switch 
(230V/115V)). If the voltage of the power control switch 
differs from the line voltage, you must adjust the setting of 
the power control switch as follows (see fig. 1b): 
A.  Open the fuse box lid using a screwdriver. 
B.  Take out the fuse box. 
C.  Remove both fuses and insert two new fuses. 
  These must be identical and should correspond to the 
  line voltage. See chapter 9.0. 
B.  Turn the fuse box 180° and slide it into place. 
 
Check that the earth connection for the instrument is present 
and attach the cable. 
 
Place the parts from the liquid bath kit in the well in the 
following order:  
 Stirring magnet – It is very important that the stirring 
magnet is in place and spinning before any calibration is 
attempted. The stirring magnet ensures minimum 
temperature gradient in the fluid. The magnets teflon 
cover will over time be worn down, leaving the magnet 
flat on one side. This will reduce the spinning ability. A 
magnet with a flat side must therefore be replaced. 
 Sensor basket – It is very important to place the sensor 
basket in the well, as it ensures that the sensors 
encounter maximum temperature stability and ensures 
that the stirring magnet is not blocked.