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- EN -
65
Malfunction Possible
cause
Remedy
Oil film in the drum filter
module
Harmless food-grade oil may leak from a
new rinsing pump for a short time when first
used
No measure is necessary
Water contains too much
ammonium/nitrite
Insufficient Hel-X biomedia used
Use more Hel-X biomedia if necessary.
Unit has only been in operation for a short
time
The full biological cleaning effect is only achieved
after several weeks.
Hel-X biomedia are being
flushed out.
The meshed tube has slipped
Correct the position of the meshed tube.
Defective meshed tube
Replace the meshed tube.
Less movement of the Hel-
X biomedia
Aerator rod is blocked
Replace the aerator rod.
Aerator pump malfunction
Check the aerator pump.
Less movement of the new
Hel-X biomedia
Hel-X biomedia are not yet fully colonised.
It takes several weeks for the biomedia to become
colonised by bacteria. Wait for the natural process
to take place.
8
Maintenance and cleaning
W A R N I N G
Possible death or severe injury from hazardous electrical voltage!
►
Prior to reaching into the water, isolate (switch off and disconnect) all units/devices used in the water.
►
Isolate the device (disconnect from the power supply) before carrying out any work on it.
8.1
Cleaning the unit
►
Do not use aggressive cleaning agents or chemical solutions as they could attack the housing or
impair the function of the unit.
►
Recommended cleaning agent for removing stubborn limescale deposits:
– Pump cleaning agent PumpClean from OASE.
– Vinegar- and chlorine-free household cleaning agent.
►
After cleaning, thoroughly rinse all parts in clean water.
8.2 Regular
tasks
The filter system is self-cleaning. Carry out the following work regularly to ensure the optimum cleaning
capacity of the filter system.
Regular checks
►
Check the display of the control system for any system messages. (
→
System messages)
►
Check the area in front of the separating plate and the inside of the filter drum for excessive soiling
(e.g. string algae). To do this, remove a screen element. (
→
Removing/fitting a screen element)
Removing accumulated dirt
Dirt that cannot be collected by the filter drum, sinks to the bottom and has to be removed.
►
Open the DN 75 dirt outlet for approx. 10 seconds once per month.
►
Remove accumulated dirt in front of the filter drum.
►
Remove string algae from the dirt channel.
►
Remove accumulated dirt from the level detection device.
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