Lauda MC 250, Operation Instructions Manual

Page: 49 / 64

8.2 Alarms overview
Alarms are relevant for safety. The components of the device such as the
pump switch off. A two-tone signal is output by the device. The red LED on
the device also lights.
Output on the display Description
In the event of a Low Level alarm, the fill level of the heat transfer liquid is
below the minimum limit. The fault which caused this low fill level must be rec-
tified to cancel the alarm. Heat transfer liquid must also be refilled.
Warnings are output before the alarm is emitted. The alarm is output after
approx. 5 minutes.
The pump is blocked for any pump alarm. This can be caused by unacceptably
high viscosity of the heat transfer liquid or by foreign bodies in the circuit.
The temperature of the electronics is higher than 75 °C.
8.3 Warnings overview
Warnings are not relevant for safety. The device continues running. A con-
tinuous tone is output for a short time by the device. Warnings are output
periodically. You are therefore reminded in the event of an existing fault.
Indication on the display Description
In the event of a Low Level warning, the fill level of the heat transfer liquid is
below the minimum limit.
The fault which caused this low fill level must be rectified to cancel the warning.
Heat transfer liquid must also be refilled.
If this warning is ignored, a Low Level alarm will be output after approx. 5
minutes and the components of the device such as the pump will be switched
off.
The upper temperature limit has been exceeded for this warning.
The device fault must be rectified to remove this warning.
The lower temperature limit has been undercut for this warning.
The device fault must be rectified to remove this warning.
V05REV08 Microcool 49 / 57