Removing The Controller From The Bridge Plate; Recommended Liquids - Grant SCIENTIFIC Optima T100 Bedienungsanleitung

4.5

Removing the controller from the bridge plate

Allow the working liquid to cool before removing the T100/TC120 from the bridge plate.
Carefully remove the T100/TC120 and bridge plate together from the bath or vessel.
Take care as the pump will contain a small amount of the working liquid which will leak
out as the unit is handled. Undo the retaining nuts and remove the bridge plate. Attach
the retaining nuts to the locating threads for safe keeping.
4.6

Recommended liquids

The following table lists the recommended liquids for different temperature ranges.
Always ensure the liquid used is safe and suitable for your working temperature. If using
non-recommended heat transfer liquids, it is the responsibility of the user to conduct an
assessment to ensure the intended fluid is compatible with the T100/TC120 and vessel.
If using non-recommended heat transfer liquids it is important to set the over-temperature
cut-out to a value no higher than 25°C below the fire point of the liquid. If in doubt please
contact the Grant technical support team.
To ensure protection the overtemperature cut out (TC120 only) must be set
appropriately for the heat transfer liquid selected. See table below.
If using non-recommended heat transfer liquids it is important to set the over-
temperature cut-out to a value no higher than 25°C below the fire point of the
liquid. If in doubt please contact the Grant technical support team.
Use fume extraction when using silicone fliuids at elevated temperatures
Recommended
Temp range
liquid
50% water, 50%
-30°C to 30°C
antifreeze (inhibited
ethylene glycol)
80% water, 20%
antifreeze (inhibited
0°C to 30°C
ethylene glycol)
Water*
5°C to 99.9°C
T100 & TC120
Operating Manual
Cut-out
Comments
setting
WARNING: Ethylene glycol is
toxic – follow the manufacturer's
40°C instructions.
For safe disposal consult your
local regulations.
Use a lid to reduce the dilution
of the mixture caused by
40°C
condensing water vapour from
the air, and to maintain the cool
down rate.
Water can be used but care
should be taken above 60°C as
hot vapour can be dangerous.
Use a lid or polypropylene
spheres above 60°C to ensure
good performance & reduce
110°C evaporation.
At temperatures approaching
99°C the temperature
performance will be affected due
to localised boiling.
The units should not be used to
boil water.
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