Lauda RE 415 G - Low Level: Alarm and Checking

54 / 134 ECO Gold 09/2021
 
When the bath temperature is located above the overtemperature switch-
off point, a two-tone alarm sounds. "Overtemperature" appears in the dis-
play, the heater switches off on all poles and the pump and chiller are
switched off via the electronics.
- Rectify the cause of the malfunction.
- Wait until the bath temperature has cooled below the over-
temperature switch-off point or set the overtemperature switch-
off point higher than the bath temperature.
If "Overtemperature" appears in the display:
- Unlock the "Overtemperature" display with .
Before a longer unsupervised operation check the overtemperature protection:
- Slowly reduce T
max
as described in ( 7.4.5). The thermostat should switch off when the actual temperature is
greater than T
max
.
Alarm signaling (see above) must occur.
- Reset the switch-off point to be higher than the bath temperature.
- Unlock the "Overtemperature" display with .
8.1.2 Low level: Alarm and checking
 
When the liquid level falls so far that the heaters are no longer completely
covered with liquid, a two-tone alarm sounds. "Low Level Pump" appears in
the display, the heater switches off on all poles and the pump and chiller are
switched off via the electronics.
- Rectify the cause of the malfunction.
- Top up the missing heat transfer liquid ( 6.3 and 6.4).
- Unlock the "Low Level Pump" display with .
Check the safety system at regular intervals ( 8.3.2) by lowering the bath level. Do not carry out this test at a bath
temperature below 0 °C or above 50 °C in order to avoid dangers due to temperatures that are too hot or too cold.
Alarm signaling (see above) must occur.
- Top up with heat transfer liquid.
- Unlock the "Low Level Pump" display with .
Switch the device off immediately and withdraw the mains plug if irregularities occur when checking the safety devices.
Contact LAUDA Service ( 8.7) or your local service.