KESSEL-Kleinkläranlagen INNO-CLEAN® - Kessel Design

7. Maintenance
7.1 Maintenance Preliminary sedimentation + aeration
Note: Please find out who is responsible for the maintenance
of small sewage treatment plants in your area.
For maintenance purposes, work and inspections must be
carried out by the service staff at intervals of approx. 6
months (at least twice every year). The plant components inside
the tank are easy to maintain. The examination results
of the purified sewage are requested by the Lower Water
Authority as proof of the purification performance (operations
diary).
We recommend to at least carry out the following tasks:
• Inspection of the operations diary for regular entry of the
operating times.
• Checking the plant's state of repair, e.g.: accessibility, ventilation,
screw connections, hoses.
• Checking the free mobility of the floater.
• Function check of all mechanical, electrical and other plant
parts, in particular of the compressor and ventilation facilities.
• Function check of the alarm function and control for possible
faults or incidents.
• Inspection of the air syphons (clear water, feeding and
sludge syphon) for clogging. For this purpose it may be necessary
to remove and clean the air syphons. To do so,
unlock the snap closing on the syphon and pull out the
grey air hose. Afterwards open the red locking lever and
pull the air syphon out of the purification tower. Thus, the
syphon incl. the inside hose can be cleaned of any dirt. Afterwards
return the lever into the appropriate position and
connect it correctly.
• If an inadequate ventilation pattern makes it necessary to
clean or replace the aerator spark plug, the latter can be
removed via the integrated guide rail on the purification
tower. The aerator spark plug is located underneath the
outlet pipe on the bottom of the tank. Pull out the aerator
spark plug by means of the pertinent air hose. When inserting
the aerator spark plug, pay attention that the integrated
guide claw is placed back into the guide rail on the
purification tower. The aerator spark plug must be let down
to the bottom of the tank.
• Performance of general cleaning work such as e.g.: removal
of deposits, removal of foreign matter.
• Pay attention that the floating switch is clean and free floating.
• Setting optimum performance data (see table page 29) e.g.
oxygen supply (~ 2 mg/l), sludge volume (300 - 500 ml/l).
• Determining the sludge level inside the sludge storage and
possibly initiating the sludge removal.
The maintenance that is carried out must be recorded in the
operations diary.
Sampling vessel
Clear water syphon
Feed syphon
Sludge syphon
Discharge pipe
Snap closing
Locking lever
Valve block
Floating switch
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