Lauda UWT Series, Руководство по эксплуатации

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UWT circulation heat exchangers
16
Starting up
YAWE0029 / 29 June 2018

Setting the switching threshold for overtemperature:
Factory setting is 25 °C. Setting in the complete temperature range of the unit is possible.
The setting takes place at the configuration level. Programming (setting) of the operating
parameters is possible at the configuration level. To do this, press the key for 10 s.
First
SEt
is displayed and then after 10 s
St1
.

The menu points can be selected with the keys and . Select the menu point
St2
to set the overtemperature. The entry is activated with the key. Then select the
value with and . Confirm the changed or new value with the key
(press
for at least 2s)
. The return to the normal menu occurs automatically by a timeout of 10 s.
6.3 Adjusting the outflow pressure with the bypass valve


The internal bypass valve is set at the factory to 0.5 L/min.

Adjustment is only necessary if the bath temperature does not reach a new,
lower set point with a closed laboratory circuit (no flow).
Only adjust the internal bypass if the flow is unsuitable.

Withdraw the mains plug and open the unit.

Close the laboratory circuit (no flow now present).

Release the side of the bypass valve connected to the laboratory circuit return and extends
it with a hose which leads into a beaker.

Connect the mains again and switch on the unit.

Dangerous electrical voltage inside the unit.
This adjustment may only be carried out by specialist personnel!

The valve is located inside on the back panel of the unit.

Adjust the valve with the enclosed hand wheel to 0.5 L/min. Return the heat transfer liquid
to the bath.

Disconnect the mains and close the housing.