Operation and maintenance manual AQUAmax
®
BASIC/CLASSIC
ATB WATER GmbH, Südstraße 2, D-32457 Porta Westfalica, www.atbwater.com /
Art.-No.: 9060 0210 / Status: 30.01.2019 / Page 27 from 40
Rectification of Faults
Fault Possible cause Rectification
The water level in the primary
settling stage is unusually high,
whereby a normal water level is
present in the aeration stage.
• The charging pipeline is
leaking and draws in air.
• Check the screw
connection for tightness. If
a hose is available as
charging line the securing
of the hose and the leak
tightness of the hose should
be checked.
• The charging pipeline is
blocked.
• The water transmissibility
can be checked in manual
operation.
• The submersible motor
pump is defective.
• Call the Service.
• There is air in the impeller
chamber of the pump. This
condition can be detected
through a gurgling sound.
The bleeding of this
chamber is ensured through
a small drilling in the lower
third of the pump casing.
• Remove AQUAmax
®
and
check the drilling, if
required, clean.
The water level in the primary
settling stage and in the
aeration stage is unusually
high. The control system
indicates “Flooding alarm”.
• Unusually high infiltration
water inflow. With heavy
rainfall due to surface water
or rain-sodden ground due
to leaking concrete tank.
• Infiltration water may not
ingress into the wastewater
treatment plant over a
longer period. If necessary,
seal concrete tank or
remedy other causes.
• The submersible motor
pump is blocked or
defective.
• Check the pump with
manual operation, if
required, call Service.
• There is a back-up at the
discharge point. The water
conveyed by the pump flows
back again.
• The discharge point must be
made free again.
The water level in the primary
settling stage and in the
aeration stage is unusually
high. The control system
indicates “Energy-saving
operation”.
• The float switch cannot float
up because it is limited its
freedom of movement.
• Check the float switch (see
Manual Mode).ÆDoes not
apply for BASIC.
• The float switch is defective
or the cable is interrupted.
• Call Service.
The water levels in the primary
settling stage and in the
aeration stage are always the
same, although water flows into
the primary settling stage.
• The partition wall between
aeration stage and primary
settling stage is not
watertight.
• Close partition wall slits and,
if necessary, reseal partition
wall joints.
• The hydraulic system in the
AQUAmax
®
for the
interruption of the charging
pipeline is impaired.
• Call Service.
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