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Alpha
7.11.4
Unlock the overtemperature protection
Switch off the thermostat, pull out the mains plug!
To unlock the protection, push the reset knob behind the ventila-
tion grille (see arrows). You can use for example a pen.
Switch on the thermostat.
7.11.5
Pump-motor supervision: Overload
A temperature sensor monitors the pump:
1.
Alarm sounds as dual-tone signal for pump-motor overload or blockage.
2.
Display of
PuP
signals blockage.
3.
The red LED
above the fault triangle
flashes.
Heater switches off on both poles;
Pump and refrigerating unit are switched off electronically.
Switch off the thermostat, pull out the mains plug!
Find the cause of the fault. Perhaps the viscosity of the heat transfer liquid is
too high or the pump is blocked.
Rectify cause of fault.
Press the <Enter> key.
Also press this key if the unit has been switched off in the fault state.
P u P
Summary of Contents for RA 12
Page 12: ...12 52 Alpha 7 2022 1 Control head with clamp 2 Bath vessel 3 Four mounting feet 1 2 3...
Page 14: ...14 52 Alpha 7 2022 1 Mains cable 2 Rating label 3 Cooler cable 4 Bath drain nozzle 1 2 3 4...
Page 44: ...44 52 Alpha 7 2022 Cooling characteristics Alpha RA 8 RA 12 and RA 24 230 V 230 V...
Page 45: ...7 2022 Alpha 45 52 11 Declaration of Conformity and Product Returns...
Page 46: ...46 52 Alpha 7 2022...
Page 47: ...7 2022 Alpha 47 52...
Page 51: ......