Lauda UWT Series, Руководство по эксплуатации

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UWT circulation heat exchangers
YAWE0029 / 29 June 2018
Preparations
13
5.2 Filling
The circulation heat exchangers in the primary and laboratory circuits are designed for operation
with water or a glycol/water mixture.
 
Close the drain tap (located right at the bottom on
the back panel).

Remove the plug from the filling opening at the
front. Use a funnel for filling, if required.

Fill the unit with heat transfer liquid up to the top
level mark.

A low level warning occurs if the level is outside of
the normal range.

For easier venting of the pump, the outflow to the
laboratory cooling circuit (pump outflow) should be
open when first filling; otherwise the pump may be
permanently damaged.
 
The units are intended for use with water or glycol/water mixture in the coolant
circuit and laboratory circuit.

Only pressure-sealed loads can be connected.

Make sure that when connecting an external load, the liquid level does not fall
impermissibly through filling the load

refill with liquid, if required.

Contaminated cooling liquid in the cooling circuit can lead to blockage of the
heat exchanger.

With unintentional closure of the laboratory circuit return, then with units with a
maximum discharge pressure > 1 bar pressures can arise which can damage
glass apparatus!

Observe the maximum permissible pressures for the connected apparatus.

With loads situated at a higher level and with the pump stopped and air seeping
into the thermostatic circuit, then even with enclosed circuits the external volume
can run empty, resulting in overflowing of the reservoir.
Normal range