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7. Use the thumb screw (4) to secure the cover plate to the bridge. Bungs (5 and 6) are provided to seal off the
holes in the bridge piece. It is necessary to t the bungs to reduce heat losses and prevent steam or other
vapours getting to the thermoregulator.
8. If you do not want to use a bridge piece to secure the unit to a bath then you must use a clamp. The clamp
bracket ts between the pump legs in the slot provided. Slide the bracket into the slot and use the two screws
in the clamp kit to secure the clamp to the unit.
9. A cooling coil, which is an optional accessory, will give control for temperatures between 5°C above ambient
and 5°C above the temperature of the water supply. See the list of accessories on page 36. The cooling coil is
tted to the thermoregulator just below the over-temperature cut-out switch. You will nd a rubber
moulding screwed to the base and lling two slots. Remove the screw and moulding and use the screw to t
the cooling coil in the slots. Keep the moulding in a safe place in case you need to replace it.
Connect a hose from a tap to one end of the coil and from the other end of the coil to drain. Adjust the water
ow to give the required cooling. Note that the liquid calibration baths are tted with their own cooling coil.
10. For lower temperatures, a Dip Cooler such as a Techne RU-200 or RU-500 or a Flow Cooler such as the
FC-200 or FC-500 is required. Note that model TU-20HT is not suitable for use with ow coolers. Alternatively
a refrigerated bath can be used. See the individual instruction manuals for installation information.
Slot for clamp
Slots for Cooling Coil
Clamp
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