Pentair Jung Pumpen OXYPERL 3 Instructions De Service page 7

Installation of SBR system with two Oxylift aerators
It must be ensured that all mains cables from the submersible
motorised aerator and the pumps used are securely attached
and do not float in the wastewater. This will prevent the rotat-
ing propeller from coming into contact with the cables and
damaging them. The propeller itself is protected by a guide
ring on the housing.
Attachment of aeration hose (example)
Securely attach a 90° bend to the male thread socket and then
screw a hose nozzle into the bend. The suction hose can now
be secured to the nozzle with a hose clamp.
NOTICE! If the pump is malfunctioning, a slight leakage of the
contents of the oil reservoir into the wastewater medium is
possible.
MAINTENANCE
To ensure continued reliability of service, we recommend that
you take out a service contract.
WARNING!
Before carrying out any works: disconnect the pump and the
controls from the mains and take steps to ensure that no one
else can reconnect them to the power supply.
WARNING!
Check the mains cable for signs of mechanical and chemical
damage. Damaged or kinked cables must be replaced by the
manufacturer.
CAUTION!
Do not touch the pump until all rotating parts have come to a
standstill.
NOTICE! When using a chain to lift the aerator, please observe
the relevant national regulations regarding accident prevention.
Remove any solids and fibres from the aerator housing and the
aeration propeller. To maintain the function of the cooling sur-
faces, they must be cleaned regularly to remove any residues
(e.g. limescale).
Replacing the propeller
NOTICE! In some models, there is a special shim disc between
the motor shaft and the propeller. This must also be re-inser-
ted after the propeller has been replaced.
The propeller is attached to the motor shaft with a cylinder
head screw. This screw must first of all be removed using an
Allen key, and then the propeller can be carefully taken off the
motor shaft and replaced.
The propeller must not rub against the housing once it has
been tightened, otherwise a shim must be inserted between
the housing and the propeller.
NOTICE! The gap between the housing and the propeller must
not be greater than 1 mm, as otherwise the mechanical seal on
the OXYPERL will not be sufficiently prestressed and oil leaks
may occur.
Tightening torque M
M 6 : M = 5 Nm, Amtec 3.5 : M
A
Air reflux valve (Accessory)
A particularly for problematic cases developed optional air re-
flux valve presents a pressure compensation when switching
off the aggregate. This also ensures that no solids get into the
propeller.
ENGLISH
of the screws
A
= 1 Nm and Amtec 5.0 : M
A A
= 2 Nm.
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