Backwater flap maintenance
▶ Actuate the locking lever of the backwater flap ➊
▶ Pull the connection with backwater flap away ➋, CAUTION! backed up
water will escape.
▶ Clean the connection with backwater flap in a water bath.
▶ Make sure that the backwater flap can move freely.
▶ Check the chamber system for heavy soiling, clean if necessary. Sharp
devices are not suitable.
Check electric components:
▶ Check the connection pipes for mechanical damage.
▶ Carry out isolation measurement of the pump.
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Installation and operating manual
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5
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Fig. [11]
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