4
.
Control unit
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If the system is disconnected from the mains (e.g. due to a power cut, should the internal fuse blow or by
disconnecting from the socket), the indicator issues an acoustic and optical signal in turn regardless of
the cause. There is a 5-second delay before the device responds to a mains failure. This prevents brief
interrupts, which often occur e.g. during a storm but do not impact on the wastewater treatment system's
overall function, from being indicated unnecessarily.
After the 5-second delay, there is an intermittent beep with a red flashing signal. Five flashing
signals and one beep repeat at intervals of 5 seconds for around 12 hours (if the emergency
power supply is fully charged).
The device cannot be switched off when in this state.
When the mains voltage is restored, the device is returned to the monitoring status and the control unit
continues from where it left off without any keys having to be pressed. The fault message disappears
automatically. If the emergency power supply is flat, the device restarts with a cycle pause.
Power cut
Please note:
If the system is disconnected from the mains for more than 24 hours,
the system will be unable to clean the wastewater properly if at all.
Never switch off
system
(the only exceptions are if maintaining system parts and in the case of sys-
tem faults restricting function)
Summary of Contents for one2clean+ XXL
Page 39: ...13 Notes 39 40 13 Notes ...
