August AT-10, Manual

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WASTEWATER TREATMENT
PLANT MODEL AT6 - AT50
14 13
Foam in the non-aerated chamber
– can be formed from household chemicals; foam can dissi -
pate automatically within a few hours. This is a possible phenomenon during the start-up/tuning
operations or after excessive reduction of sludge concentration.
Brown foam
– may be caused by several reasons, please contact the Manufacturer or its author -
ised representative immediately for maintenance of the Unit.
Floating sludge in the secondary settler
– if the sludge occupies more than half of the surface
area of the secondary settler, contact the responsible service representative.
Foul odour
– strong unpleasant odour is not normal. Contact the Manufacturer or its authorised
representative who is authorised to operate the Unit.
Blower control
– the blower must always be connected to the power source. The blower runs
periodically, using the BASIC controller; the maximum resting time is several minutes. If the
blower is not working, please contact the Manufacturer or its authorised representative urgent
-
ly to perform the Unit maintenance.
Controller’s error messages
There are two types of alarm in the controller
– acoustic and optical. The optical alarm system
operates continuously. The audible alarm will be triggered if the blower or controller is malfunc -
tioning or in case of power failure. The audible alarm can be interrupted by pressing
Δ
.
Optical alarm
Constant green
– blower operation is temporarily paused (this is not a malfunction).
Flashing green
– blower operating.
Constant red
– blower disconnected – meaning the disconnection or failure of the blower or
auxiliary device (non-standard). In the event of failure of the blower or auxiliary device, contact
the Manufacturer or its authorised representative who is authorised to operate the Unit.
Flashing red
– power failure – the controller signals this fault by sound and image. This alarm
may last for several hours (depending on the battery charge level). When the batteries run out,
the controller will switch to standby mode. When the power supply is restored, the controller
will turn on after 2 minutes, with the last selected mode recorded in the memory. If the battery
is excessively depleted, the displayed time may not match actual time. In such case, set the
actual time.
In the event of the malfunction of the controller, disconnect the blower from the controller and
connect directly to the mains.
example