Correction Of Warnings And Errors - Kessel aqualift f Installation, Operating And Maintenance Instructions

8. Warnings, Errors and Troubleshooting
8.3 Correction of Warnings or Errors
Maximum Pump Run
Warnings
Time exceeded
(By level control)
Maximum Pump Run
Time exceeded (By
level control)
Alarm level exceeded
Level error
Temperature error
Fehler
Under current failure
Over current failure
Relay failure
Description, Cause,
The pre-set max run time Activates
was exceeded (too much
wastewater, pump
performance not sufficient,
level failure)
Pump start up limit has
been exceeded (too
much wastewater, pump
performance not suffi-
cient, level failure)
The alarm level has been
exceeded (too much wa-
stewater, pump perfor-
mance not sufficient,
level failure)
The level switch senses an
illogical switching squence
(for example alarm level has
been reached without first
reaching pump ON level)
The thermal switch in the
motor activates
The control unit senses
under current (ex – pump
running without water)
The third start attempt fai-
led (pump imeller
blocked)
The control unit sensed a
motor current even
though the pump did not
activate, this means the
relay contacts are dama-
ged – the lifting station is
no longer operational
Audible Alarm
Activates
Activates
Activates
Activates
Activates
Activates
Activates
58
Potential Free Solution
Contact
Relay open Check incoming
wastewater flow
Check level switch
Check pump perfor-
mance / impeller
Relay open Check incoming
wastewater flow
Check level switch
Check pump perfor-
mance / impeller
Relay activates Check incoming
(closes) wastewater flow
Check level switch
Check pump perfor-
mance / impeller
Relay activates Check level switch
(closes)
Relay activates After the pump cools
(closes) the thermal switch will
signal a proper opera-
ting temperature and
the error will be era-
sed. The pump is
again in normal ope-
ratin mode.
Relay activates Ventilation port
(closes) blocked
Pump intaking air
Relay activates Check to see if impel-
(closes) ler spins freely
Remove any objects /
blockages in outlet /
impeller area
Relay activates
(closes)
Disconnect power to
system (unplug con-
trol unit)