Binder VDL 23 User Manual

Loading ...

VDL (E3.1) 10/2020 Page 128/196

Normal display in state of alarm (sample val-

ues)

The alarm message “Test temperature limiter”

Screen header flashes in red color. if the buzzer

is enabled there is an audible alert. Press the

Alarm icon.

List of active alarms.

Press the Reset alarm icon.

The chamber only starts heating if the current actual value of the unit has reached at least once a value

below 40 °C. The chamber continues heating until one of the following alarm messages appears:

• If the test is passed, the alarm message “Temperature limiter 1 triggered” will be displayed.

• If the test fails, the alarm message “Temperature limiter 1 error” is displayed.

To deactivate the test alarm, go back to the “Test temp. limiter” setting menu and set the value to “0” (test

alarm deactivated).

Then pull out the power plug und let the chamber cool down for 30 minutes. Plug in the power plug again

to return to normal chamber operation.

For the chambers with a single safety temperature limiter (TL), the test is completed here.

For the chambers with two safety temperature limiters (TL), carry out another test for the second TL. For

this purpose, the inner temperature must have cooled down to a value between 28 °C and 38 °C after the

first test.

Enter “2” in the “Test temp. limiter” setting menu to activate the test alarm for the second TL and press the

Confirm icon. Then proceed as described above.

The following table gives an overview of the maximum trigger times of the different chamber models.

If the safety temperature limiter is triggered before the end of this maximum trigger time, the test is consid-

ered passed. This corresponds to the alarm message “Temperature limiter 1 triggered” or “Temperature

limiter 2 triggered”.

After the maximum trigger time has expired, the test is considered as failed. This corresponds to the alarm

message “Temperature limiter 1 error” or “Temperature limiter 2 error”.

Chamber Test Maximum trigger time

in minutes

VDL 23, VDL 23-UL 1 16

VDL 56, VDL 56-UL 1

VDL 115 1 17

VDL 115-UL 1

Loading ...

Binder VDL 23 Vacuum drying