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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
recommended liquid.
For the RB-12A and RB-22A units:
Temperature
-35
o
C to 0
o
C *
For the RB-5A units:
Temperature
-20
C to 30
C *
o
o
* Warning: Above 0
giving a health and safety hazard and also deteriorating the
mix. Check with health and safety procedures before using
above 0
C.
o
Above 30
C anti-freeze may give off dangerous fumes. Again
o
check with health and safety procedures before using above 30
There is no liquid which will cover the full range of working
temperatures. The units are designed to work up to 40
occasional peaks to 100
3 Hoses should be as short as possible and secured with clips.
4 The whole system should be insulated as much as possible.
5 Set up the bath on a flat surface.
6 For fixing the thermoregulator to the bridge, see the
thermoregulator manual.
7 If external circulation has been chosen suitable hoses should be
fitted to the outlet and return pipes of the thermoregulator. Always
securely clip the hoses in place. A suitable hose is one of 16mm
bore and capable of withstanding both the temperature of
operation and the liquid being used. 12mm bore hose may be
used if the hose is soft such as silicone rubber.
8 If the system is of a small bore or the viscosity of the liquid
prevents the flow being maintained, a by-pass should be
incorporated in the system.
Fridge Bath
Thermoregulator
R e f r i g e r a t e d B a t h s U S E R ' S M A N U A L
C in an enclosed circuit use the
o
Liquid
40% water 40% anti-freeze 20% alcohol
Liquid
50% water 50% anti-freeze.
C alcohol may evaporate from the liquid
o
C.
o
By-pass
(If necessary)
o
C.
C with
o
External circuit
P A G E 11
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