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WTC 600 LP / MP MAINTENANCE
Service Handbook 08.2004
4.5.4 Malfunctions – Media and Activated Carbon Filter, Fine Filter and Flocculation
Indication Malfunction Cause Corrective Action Chap./Fig.
More than one Backwashing is Load of debris Install suitable preliminary 3.4.2.4
backwashing initiated too often too high treatment; consultation Tab. 24
per day through sales
(diagnosis
controller)
Backwashing no Pump defective Replace pump or
sufficient repair
Intake side of Clean
pump clogged
Intake side of Shorter line set-up;
pump too long notify sales
Sand Heavily soiled Notify sales
conglutinated water
Differential Filtrate of the sand Small particles Install preliminary 4.1
pressure of filter turbid come through treatment
fine filter quickly
exceeds 1 bar
Filtrate of the Small particles Check sand filter; 4.1
activated carbon come through install preliminary
filter turbid treatment as required
Filter material No backwashing Carry out backwashing; 3.4.2.1
conglutinated carried out for too if without success,
long replace sand
Too much Reduce metering amount
flocculation agent of flocculation agent;
added carry out backwashing
Indication of the Power supply Notify electrician
controller disconnected
remains dark
Control wheel Control switch or Replace controller
does not stand switching
still mechanism
defective
No changes of Backwashing is Controller Change 3.4.2.4
the “back- not initiated incorrectly programming
washing” programmed
counter
Tabelle 31