General Problems - Kessel Aqualift F Anleitung Für Einbau, Bedienung Und Wartung

The following problems and solutions should only be checked and handled by a licensed authorized professional .

8.1 General problems

Problem
1 Pump(s) do not start
2 Pump(s) run but alarm level
has is displayed
3 Digital display shows rota-
tional error (incorrect phase
connection)
4 Wastewater is not being
pumped out, connected fix-
tures not draining
5 Pump(s) run rough or loud
8. Problems and Remedial Actions
Reason
• Switch on control unit not set to
'Auto' (only on models December
2009 and older)
• Motor protecting switch has activa-
ted, impeller is blocked
• Motor difficult to turn
• 1 or 2 phases not receiving Power
Irregular power supply (power
surges) to control unit
• Phases connected improperly
• Too much wastewater entering sy-
stem.
• Pump performance not satisfac-
tory.
• Non-return flap stuck in open posi-
tion
• Improper phase connection
• No power to control unit
• Power to control unit not activated
• Level sensors not functioning properly
• Wastewater inlet to pumping system
blocked
• Possibly gate closure valve before
inlet not fully opened
• Wastewater temperature over longer
periods of time (15 minutes) too high
• Pumps or pump impellers damaged
67
Solution
• Set switch to 'Auto'
• Remove pumps, inspect for blockage at im-
peller or intake area
• Service/repair the unit with customer service
• Check fuses and electrical supply cables
Replace batteries in control unit
• Swap two phases of power supply
• Check to see if unusually large amount of wa-
stewater are entering the system, if required
reduce wastewater flow entering system.
• Remove and debris / blockage from impeller
/ pump intake area
• Remove and debris / blockage from pressure
outlet pipe
• Pumps / impellers are worn, replace
• Pump has been improperly specified and is
not capable of handling on-site requirements
• Set non-return flap in proper (vertical) position
• Check phase connections to control unit, if ro-
tating in improper direction, swap two phase
connections in control unit
• Turn on mains power switch on control unit
• Check fuses, Check power supply
• Check condition (how dirty / clogged), swit-
ching points and function of the level sensors
(float switches or pressure switch)
• Clean main wastewater inlet pipe to pump-
station
• If gate closure valve installed prior to inlet,
make sure it is in the fully open position
• Reduce temperature of wastewater entering
system
• Check pumps / motors, damage parts to be
replaced by customer service department