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8. Malfunctions and troubleshooting
Störung
5
System suddenly
runs loudly
6
Putrid smell
Acrid smell
7
System runs too often, swit-
ches on for no reason
8
System does not switch or
has a variety of different
switching malfunctions
9
Pumping capacity too low
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Ursache
Inlet gate to the system (if existent) not
opened or not opened completely
Wastewater temperature too high
over a longer period (15 min), lea-
ding to restricted suction capacity
of the system
Phases switched through work on
the domestic power supply
Damage to the pump parts through
objects
Object in the pump
Leaks in the lifting station
Pump not airtight
Motor(s) too hot, overloaded
Contactors too hot on account of
switching malfunctions
Supply quantity too high through
external water or similar
Backwater flap faulty, wastewater
runs out of the pressure pipe back
into the system
Foam formation in the system
Tank or pumps are blocked by
grease being discharged in large
quantities
Level control ventilation blocked
Level control soiled; level pressu-
re switch set incorrectly or faulty
Rotary field incorrect
Wrong direction of pump rotation
67
Abhilfemaßnahme
Open inlet gate completely
Reduce wastewater temperature
checking the direction of rotation
Check pump, have it repaired or replaced by
Customer Services if necessary
Remove the object, check pump for damage
and replace if necessary
Check ventilation, inlet and pressure lines as
well as covers for air-tightness and eliminate
leaks
Check pump, have it repaired or replaced by
Customer Services if necessary
Check motor and pump to make sure they are
running easily, check system for switching mal-
functions (particularly motor protection switch)
System switched on and off too often on ac-
count of high inlet quantities, clarification with
KESSEL customer services
Check system for switching malfunctions.
Find and eliminate the causes
Check backwater flap (integrated in the pres-
sure outlet connecting piece on every pump),
clean it and replace any damaged parts
Reduce amounts of washing powder and de-
tergents used
Clean the whole system, check grease
discharge
Check cables between the switch unit and level
control for kinks and correct routing (even gra-
dient), correct or replace if necessary
Remove the level control, clean submersible
pipe, check pressure switch and adjust if ne-
cessary
Swap mains wires (malfunction message at the
switch unit)
Check pump wires for correct connection
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