Graf Klaro Easy SBR, Instructions For Start-Up, Operation And Maintenance

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9. Fault messages and rectification
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Display
Liquid crystal display
Possible cause Rectification
KLbasic /
KL24base KLplus /
KL 24plus
- modem error

Batteries in module are
not yet fully charged

Modem has no mains
voltage

No SIM card inserted in
modem

SIM card not logged into
mains

Wait 5 minutes until batteries are charged

Connect modem to the mains

Insert SIM card in modem

Wait until card has logged in or move
antenna into position where reception is
available.
Unusual water levels - remedying a fault 9.2
Observation Possible cause Rectification
The water level in the
pre-treatment section
is unusually high, but
is normal in the aera-
tion section.

The lifter at valve 1 is not activated.

The pump time for lifter 1 has too
short a setting.

The feed lifter is blocked.

The air supply to the feed lifter is
leaking.

In manual mode, activate valve 1
and check function of lifter.

Have time for valve 1 extended by
service company

Allow pre-treatment section to be
pumped empty and clean lifter

Allow pre-treatment section to be
pumped empty and seal hose
connections
The water level in the
pre-treatment section
and aeration basin is
unusually high.

System running in holiday mode.

System running continuously in cycle
pause.

Control unit settings are incorrect.

The discharge lifter is blocked.

The air hose to the discharge lifter is
leaking.

Flooding in the discharging system is
not allowing water to drain from the
system.

Control unit is defective.

Exit holiday mode (see Item 6.3.4)

Have control unit settings checked
by a maintenance specialist

Allow SBR reactor to be pumped
empty and clean lifter

Allow SBR reactor to be pumped
empty and seal hose connections

Wait for flooding to drain away

Contact maintenance company
The system smells,
the cleaned
wastewater is cloudy
and/or discoloured

Too little air is being drawn into the
system

Aeration on one side only due to de-
fective membrane unit

Have aeration time extended by
service company

Check aeration pattern, contact
maintenance company
Aeration pattern is
one-sided and/or
large air bubbles are
forming in some are-
as

Membrane unit defective

Seal on aerator bar leaking

Contact maintenance company

Contact maintenance company
Solenoid valves
switching unusually
loudly

Valve seat of solenoid valve is dirty

Screw open and clean solenoid
valve