Specifications

Set-Up Procedure
1. Place a 500 ml flask with 300 ml of
water on the top plate. Place a stan-
dard laboratory thermometer (do not
use the probe for this procedure) 1/2”
above the bottom of the flask.
2. Turn the unit on and set the tempera-
ture at 70°C. Allow the unit to operate
at this temperature for five hours.
3. At the end of five hours note the tem-
perature measurement on the ther-
mometer and subtract 44° from the
thermometer reading to determine the
absolute value. Write this number
down, you may need to refer to it in
step 9. If the absolute value is zero
±3, your unit is within tolerance and
you do not need to continue. If your
number exceeds zero ±3 continue
with steps 4 - 13. If the absolute value
of this difference is greater than ±20
from zero, return the unit to
Barnstead|Thermolyne for evaluation.
4. Turn the unit off, unplug the cordset
from the power source and allow the
top plate to cool.
5. Once the top plate is cool, turn the
unit off and remove the bottom cover.
If your unit is a stirring hot plate you
should also unscrew the bracket hold-
ing the logic board/power board
assembly from the metal plate at this
time. (Refer to the instructions in this
manual for disassembling and remov-
ing the logic board.)
31
MAINTENANCE AND SERVICING