Trendnet 18-1106-33 User Manual

7. Detailed Description

If a more accurate temperature limit is required, for example
50 °C, follow the procedure below.

1.

Set the temperature limit switch to its highest value. 

2.

Set the working temperature to 50 °C according to
Section 4.4. 

3.  Run the unit and wait until it reaches exactly 50 °C. 
4.  Turn the temperature limit dial very slowly anticlock-

wise (temperature down) until the safety circuit is trigge-
red and the display indicates a malfunction.

5.

Change the working temperature setting to any value
lower than 50 °C.

6.  Wait until the bath liquid has cooled down to below

50 °C.

7.  Press the reset key. 

The circulator can now be used for temperatures up to
50 °C. As soon as  50 °C is reached, the unit switches off.

When the temperature in the winding of the pump motor
reaches a certain level, the general cut-off will be activated.
This protection prevents the motor from overheating. The
following error message will be displayed.

. After the winding of the pump has cooled

down, the following code 

is displayed. 

Check the pump and wait a few minutes until the motor tem-
perature has dropped further before restarting the unit. 

If this fault happens frequently, contact service personnel.

The temperature sensor is permanently monitored. The gene-
ral cut-off is activated if sensor breakage or current leakage is
detected. This fault is 
indicated by

.

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