Proline Low-temperature Thermostats
96
Starting up
YACE0072 / 21.08.07
7.14.5 Pump-motor supervision: Overload or blockage
kk
The SelfCheck Assistant monitors the VarioFlex Pump:
1. Alarm sounds as dual-tone signal for pump-motor overload or
blockage.
2. Display
of
aK/B
signals blockage.
3. The red LED
above the fault triangle
flashes.
Æ
Heater switches off on both poles,
Æ
Pump and refrigerating unit are switched off electronically.
−
Find the cause of the fault. Perhaps the viscosity of the heat carrier
liquid is too high or the pump is blocked.
−
Press the Enter key.
−
Also press this key if the unit has been switched off in the fault
state.
Command
Pump-motor alarm!
−
Pump-motor alarm is shown in the display and signifies that
unlocking is only possible on the Master control panel.
7.14.6 Pump-motor supervision: Dry running
kk
The SelfCheck Assistant monitors the VarioFlex pump:
1. Alarm sounds as dual-tone signal when the pump runs without
liquid. This can only occur when the float level measurement has
failed.
2. The display of
OsKDT
signals that the SelfCheck Assistant
has detected a pump low level.
3. The red LED
above the fault triangle
flashes.
Æ
Heater switches off on both poles,
Æ
Pump and refrigerating unit are switched off electronically.
The cause of the failure of the level measurement with the floatation sensor must be
found and rectified. Perhaps it is blocked by foreign bodies in the bath.
−
Press the Enter key.
−
Also press this key if the unit has been switched off in the fault
state.
Command
Alarm! Low level (pump)
−
Alarm! Low level (pump) is shown in the display and signifies
that unlocking is only possible on the Master control panel.
Pump alarm
aK/B
°C
Pump alarm
OsKDT
°C
Summary of Contents for RP 845
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