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Before a longer unsupervised operation check the overtemperature protection:
Slowly reduce T
-
greater than T
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
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.
54 / 134
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.
If "Overtemperature" appears in the display:
as described in ( 7.4.5). The thermostat should switch off when the actual temperature is
max
.
max
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.
-
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.
Unlock the "Overtemperature" display with
-
.
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
-
.
ECO Gold
.
.
09/2021
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