GL0014K Owners Handbook BioDisc BD, BE, BF, BG, ND, NE, NF, NG
Page 14
e) Lift off the walkway covering the Final Settlement Tank [B], and remove settled sludge
and any floating matter. Replace the walkway. Some units have a sludge return pump
located in this chamber - if the pump is exposed during de-sludging it is important to refill
the chamber with water, sufficient to cover the pump, before switching on the unit.
f) Lower the hose into the bottom of the Primary Settlement Tank and remove settled
sludge. Use each port sequentially and cover all ports not in use. It may be necessary to
empty the tank completely to ensure full sludge removal. Replace all port covers.
g) DO NOT attempt to remove any liquid from the Rotor Section.
h) DO NOT attempt to clean off the gelatinous growth on the rotor.
i) Ensure that the BioDisc inlet and outlet pipes [C] and the Forward Feed Buckets [D] are
free of debris.
j) Ensure that the walkway and all desludge port covers are replaced, then close and lock
the BioDisc covers.
k) Re-connect the power supply. Ensure that the Control Panel door is locked shut.
l) Units with Loss of Rotation Alarms only: Wait for two minutes. If the alarm on the control
Panel does not activate, this indicates that the Rotor has successfully re-started. If the
alarm activates, switch off the power at the Control Panel and immediately switch on
again. If the alarm continues to activate, isolate the power supply and notify the plant
owner so that the problem can be investigated.
m) Units should be refilled with water.
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