Grant Instruments TXF200 Operating Manual - Manual (Page 9)

TX150 & TXF200 30424 V6
Operating Manual Page 8
www.grantinstruments.com
EN
4.5 Removing the controller from the bridge plate
Allow the working liquid to cool before removing the TX150/TXF200 from the bridge
plate. Carefully remove the TX150/TXF200 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 TX150/TXF200 and
vessel.
To ensure protection the overtemperature cut-out must be set appropriately for
the heat transfer liquid selected see table.
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 fluids at elevated temperatures
Temp
range
Recommended
liquid Cut-out
setting
Comments
-50°C to
50°C Silicone Oil, low
viscosity 60°C Bayer Silicone M3 is a suitable liquid
-30°C to
70°C
50% water, 50%
antifreeze (inhibited
ethylene glycol) 80°C WARNING: Ethylene glycol is toxic – follow
the manufacturer’s instructions.
For safe disposal consult your local
regulations.
Use a lid to reduce the dilution of the
mixture caused by condensing water
vapour from the air, and to maintain the
cool down rate.
0°C to
30°C
80% water, 20%
antifreeze (inhibited
ethylene glycol) 40°C
5°C to
99.9°C
Water* 110°C 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
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.
70°C to
150°C
Silicone fluid
Viscosity ~20cS
Flash point ≥230°C
Fire Point ≥280°C 160°C Dow Corning DC200/20 silicone fluid is a
suitable liquid
– follow the manufacturer’s
instructions.
For safe disposal consult your local
regulations.
70°C to
200°C
Silicone fluid
Viscosity 50cS
centistokes
Flash point ≥285°C
Fire Point ≥340°C 210°C Baysilone M 50 EL silicone fluid is a
suitable liquid -
follow the manufacturer’s
instructions.
For safe disposal consult your local
regulations.