Techne RU-200 - Manual (Page 14)

P A G E 12
D I P A N D F L O W C O O L E R S U S E R ’ S M A N U A L
2 Recommended liquids:
When working at low temperatures always use a liquid suitable
for the lowest temperature at which the unit is capable of
achieving, see the list of recommended liquids below. When
using a flow cooler up to 30
o C in an enclosed circuit use the
recommended liquid.
For the RU-500 or FC-500 units:
Temperature Liquid
-35 o C to 0 o C * 40% water 40% anti-freeze 20% alcohol
For the RU-200 or FC-200 units:
Temperature Liquid
-20 o C to 30 o C * 50% water 50% anti-freeze.
* Warning: Above 0 o C alcohol may evaporate from the liquid
giving a health and safety hazard and also deteriorating the mix.
Check with health and safety procedures before using above 0
o C.
Above 30 o C anti-freeze may give off dangerous fumes. Again
check with health and safety procedures before using above 30 o C.
There is no liquid which will cover the full range of working
temperatures. The units are designed to work up to 40
o C with
occasional peaks to 100 o C, see Precautionary Measures in the
Operation section. However with the coil removed and a TU-20D
or a TU-20C in the bath, the baths themselves are quite capable of
going to 250
o C.
3 Hoses should be as short as possible and secured with clips.
4 The whole system should be insulated as much as possible.
5 DIP COOLERS
Set up a bath and thermoregulator as described in the operating
book for the thermoregulator.
The coil support supplied with the Dip Cooler mounted on a
stainless steel plate is used in place of the small cover on the
bridge piece of a Techne Bath. Slip the coil support onto the coil
and allow it to rest against the end of the flexible. Tighten the
knurled black screw on the coil support to prevent the coil moving
in the coil support, do not overtighten. Remove the blank cover on
the bridge piece and lower the coil through the hole in the bridge.
Fix the support securely to the bridge with the two knurled screws
previously removed.