Notes On The Pump; Notes On The Aerating Device - Kessel aqualift f Installation, Operating And Maintenance Instructions

The system must be checked once every month by the ope-
rator through observation of the switching routine for opera-
tional ability and leaks.
CAUTION:
Disconnect the unit from the mains during all mainte-
nance work! Heed safety instructions!
All the servicing and maintenance work described
below may only be carried out by authorised qualified
personnel.
Repairs may only be carried out by the manufacturer
or his authorised service partner.
DIN 1986, part 31, must be heeded during maintenance
work on lifting stations. Maintenance work must be carried
out regularly by authorised qualified staff.
All screws may only be tightened with a maximum torque
IMPORTANT:
of 3 Nm.
The following tasks have to be carried out:
• Visual inspection of the complete system, pumps and fitting
parts
• Thorough cleaning of the complete system and the pump
• Check on the complete system and pump housing for ex-
ternal damage and visible wear
• Check on the pump for free movement, wear and deposits
• Check the connection cables for mechanical damage and
wear
• Check the seal connections for air-tightness and replace
the seal (e.g. O-ring) if there any indications of wear
• Insulation test on the pump motor
• If applicable, check non-return valve for function.
The above checks should also be taken if the lifting station
has stood idle for an extended period of time.

7.1 Notes on the pump

The pump should be checked at regular intervals. If opera-
tional noises increase, pumping capacity decreases or there
are vibrations in the pipeline system, the pump housing and
impeller must be checked for any blockages / build up or
wear and tear. To do this, the motor unit must be loosened at
the four attachment screws (refer also to section 10.2.1) and
be removed from the pump housing. When checking the
pump housing, care must be taken that the ventilation bore
hole is kept open under all operating conditions.
The aerating device can be used to completely empty the

7.2 Notes on the aerating device

pressure pipe through manual lifting of the backwater flap on
the lifting system. To do this, an size 8 Allen key or a size 15
wrench must be used to hold the flap opener turned (see Fig.
7. Inspection and maintenance
55
2) as long as necessary to completely drain any wastewater
in the pressure outlet. Then the flap opener must be retur-
ned to its initial position which is the marked operating posi-
tion (see Fig. 3).
• Nach Wartungsarbeiten muß der Gehäusedeckel wieder
7.3 Hinweise zum elektrischen Schaltgerät
fachgerecht verschlossen wer den.
• Reparaturen dürfen nur durch den Hersteller vorgenommen
werden.
Threaded hole for easy pump disassembly.
Fig. 3
Fig. 4