11
The operating voltage and frequency are marked on the
pump and controller nameplates. Voltage tolerance : +6%
up to -10% of the voltage stated on the nameplates. Make
sure that the pumps of the pump station are suitable for
the electricity supply available at the installation site.
The pump motors have a thermal switch incorporated in
the motor windings. The thermal switch protects the motor
from overheating by cutting off the supply to the pump via
the controller.
The electrical connection must be carried out in accord-
ance with the marking on the cable to the controller.
The lifting stations require no additional motor protection.
5.2. Check of Direction of Rotation
1 Ph-pumps do not require any check, as
they always run with the correct direction
of rotation.
If the direction of rotation is wrong, inter-
change two of the phases of the electric
power supply. Using an original XYLEM-
control box with CEE-plug, this may be
done by a 180° turning of the small round
pole-socket at the plug-end with a screw-
driver.
6. Installation
6.1. Installation Place
Please pay attention to the local regulations for con-
structions and authorisations.
Please pay attention to the regulations for lifting
gears and manhole.
All underground, concret and mason's work should be
done by an expert.
Choose the installation place by taking into account the
local regulations und the following points:
Existing supply and disposal installations must be easy
accessable.
Never install the pump station close to windows and
doors.
Make sure that the inlet pipes have enough natural fall.
The pump station correspond to class A (50 kN).
6.2. Protection against lifting
Under normal conditions the pump station is carry out for
a ground water level of one meter below the pit surface
without lifting. Is the ground water level higher then one
meter there is the possibility to protect the pump station
against lifting as follows:
Place the pump station in the green concrete of the granu-
lar subbase.
Fill up the pump station with water and fill up the excava-
tion with concrete.
Fill up the tank bottom with concrete.
7. Start-Up
Never let the pump run dry for a long time of period,
as it will destroy the pump (danger of overheating).
Before starting the pump station make sure that all isolat-
ing valves are open and check that the unit runs satisfac-
torily.
Make sure that the correct phase sequence was proofed
at the 3-ph models (see 6.3.).
Turn the operation switch inti the position "Auto".
In combination with the pneumatic level control the pump
starts aud stops according to the liquid level in the tank.
8. Maintenance and Repair
In case of a defect of the pump, a repair shall be car-
ried out only by the manufacturer or through an authorized
workshop. Modifications of the pump must be confirmed
by the manufacturer. Only XYLEM spare parts shall be
used.
In accordance with the product liability law we point
out that we shall not be liable for damages caused by our
product due to unauthorized repair by persons other than
the manufacturer or an authorized workshop or due to the
use of spare parts other than original XYLEM parts. The
same product liability limitations are valid for accessories.
Before maintenance or repair disconnect the pump
from the power supply to avoid accidental starting of the
pump!
Before maintenance or repair make sure that all rotat-
ing parts stand still!
Before carrying out maintenance and service, the
pump must be thoroughly flushed with clean water. Rinse
the pump parts in clean water after dismanteling.
At pump types with oil chamber an overpressure can
escape with loosening of the oil chamber control screw.
Screw only when pressure balance took place.
Pumps running under normal operation conditions should
be inspected at least once a year. If the pumped liquid is
very muddy or sandy or if the pump is operating continu-
ously, the pump should be inspected every 1.000 operat-
ing hours.
For long and trouble-free operation of the pump, following
points should be checked regularly:
- Nominal current (A): Check with amp-meter.
- Pump parts and impeller: Check for possible wear.
Replace defective parts.
- Ball bearings: Check the shaft for noisy or heavy opera-
tion (turn the shaft by hand). Replace defective ball bear-
ings. A general overhaul of the pump is usally required in
case of defective ball bearings or poor motor function.
This work must be carried out by an authorized
service workshop.
- Cable entry: Make sure that the cable entry is watertight
and that the cables are not bent sharply and/or pinched.
Additionally at pump types with oil chamber:
- Oil level and oil condition in oil chamber:
Put the pump in horizontal position, so that the screw of
the oil chamber is above (at larger pumps: one of both
screws). Remove the screw and infer a small quantity of
oil. The oil becomes greyish white like milk if it contains
water. This may be the result of defective shaft seal.
In this case leave the condition of the shaft seals by a
XYLEM Service to examine.
The oil should be replaced after 3000 operating hours.
Oil type: Shell Tellus C22. Used oil is to be disposed ac-
cordingly.
For long and trouble-free operation of the unit we recom-
mend the following measures:
