2013/09 - Kessel

7. Inspection and maintenance
Inspection
The Pumpstation Aqualift F should be inspected monthly by
the owner to make sure it is functioning properly and is water
tight.
Caution !!!
Before conducting any maintenance on this unit make
sure to disconnect the entire unit from its power source.
All of the inspection and maintenance instruction listed
below should be handled by an authorized service
professional.
Repairs should only be handled by the manufacturer
Maintenance
Important:
All screws / bolts on the system should be tightened to a
maximum torque of 3 N.
DIN 1986 - 3 should be followed when maintaining this unit.
Maintenance should be handled by an authorized professional
and should include the following:
• Visual inspection of the pump and the pump housing /
chamber
• Complete cleaning of the entire system including pumps
• Check for obvious wear and tear and build up of deposits
on the pump and the pump chamber
• Check the pump impeller for easy of rotation and also for
wear and tear and or build up.
• Connection cables should be inspected for damage
• Check all connections and seals to assure they are watertight
• Isolation test of the pump motor
• Closure valve to be tested to assure function – valve
should be replaced every 2 years
Maintenance should be in accordance to DIN 1986-31
and should occur at the following intervals:
The entire system should be completely disconnected from
power before any work is done on the pumps.
7.1.1 Seals (water tightness)
Depending on the type of pumping medium, the seals on the
rotor shaft should be inspected after the first 500 hours of
pump use. After this initial inspection the seals should be
checked every six months or after 1000 hours of operation,
whichever comes first.
The seal on the rotor between the motor and the pump is located
behind two mechanical seals which have a oil holding
chamber behind them. The condition of the floating seal on
the bottom of the pump (the pumping medium side) can be
checked by examining the oil. In order to complete
this check, the two oil outlet plug screws have to be removed
(see illustration). After removing the two oil outlet plug
screws the oil can be poured into a clear glass container. If
the oil is clean and clear then the lower floating ring seal is
still in good condition. If the oil is milky and cloudy or contains
dirty water, then the lower floating ring seal needs to
be replaced. The replacement of this seal should only be
handled by a qualified professional. If this work is undertaking
it is recommended at the same time to check the mechanical
seals.
If the oil needs to be changed, replace with non-viscous paraffin
oil HAFA CLAREX OM, Merck Nr. 7174 or equivalent –
non toxic (type Codex). Alternatively, all motor oils with the
SAE 10W to SAE 20W may also be used. Do not mix any
type of oils with one another. The quantity of replacement oil
needed is 0.74 liter for both the TPF 1.3 and 1.9 kW pumps.
7.1.2 Macerating blades (cutting blades)
The cutting blades of the pump should be checked during
the 6 month inspection or if operation of the pump becomes
louder. The blades should be checked for wear and tear, damage
or blockage. The distance between the rotating cutting
blades and the secured cutting edge should be 0.1 to
0.3 mm. Checking or re-setting the cutting blades should
only be handled by a licensed professional.
• Units in commercial applications should be maintained
every 3 months.
• Units in residential (multi-family) homes should be maintained
every 6 months.
• Units in single family homes should be maintained every
year.
7.1 Pump(s)
Caution: Pumps are heavy – use caution when lifting!
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