WTC 600 LP / MP | MAINTENANCE |
4.5.4Malfunctions – Media and Activated Carbon Filter, Fine Filter and Flocculation
Indication | Malfunction | Cause | Corrective Action | Chap./Fig. |
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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 |
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| through sales |
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(diagnosis |
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controller) |
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| Backwashing no | Pump defective | Replace pump or |
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| sufficient |
| repair |
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| Intake side of | Clean |
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| pump clogged |
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| Intake side of | Shorter line |
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| pump too long | notify sales |
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| Sand | Heavily soiled | Notify sales |
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| conglutinated | water |
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Differential | Filtrate of the sand | Small particles | Install preliminary | 4.1 |
pressure of | filter turbid | come through | treatment |
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fine filter quickly |
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exceeds 1 bar |
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| Filtrate of the | Small particles | Check sand filter; | 4.1 |
| activated carbon | come through | install preliminary |
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| filter turbid |
| treatment as required |
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| Filter material | No backwashing | Carry out backwashing; | 3.4.2.1 |
| conglutinated | carried out for too | if without success, |
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| long | replace sand |
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| Too much | Reduce metering amount |
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| flocculation agent | of flocculation agent; |
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| added | carry out backwashing |
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Indication of the |
| Power supply | Notify electrician |
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controller |
| disconnected |
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remains dark |
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Control wheel |
| Control switch or | Replace controller |
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does not stand |
| switching |
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still |
| mechanism |
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| defective |
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No changes of | Backwashing is | Controller | Change | 3.4.2.4 |
the “back- | not initiated | incorrectly | programming |
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washing” |
| programmed |
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counter |
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Tabelle 31 |
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Service Handbook 08.2004 | 59 |
