Xylem SVI Vertical Multistage Centrifugal - Manual (Page 19)

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7. 7. 7. 7. Start Start Start Start----up up up up
With the pump body submerged start the pump, if three phase, for a few seconds. Through the
coupling guard or the fan cover check the direction of rotation: it must be clockwise when looking at the
pump from above, as indicated by the arrow on the flange.
If the direction of rotation is incorrect, turn off the master switch and invert the position of two supply
wires.
Operation Operation Operation Operation
The pump must operate smoothly and noiselessly. Do not run the pump with the delivery port closed for
more than 4-5 minutes, to avoid overheating the liquid and damages to the mechanical seal.
During operation, the outer surface of the pump (if hot liquids are being pumped)
and the outer surface of the motor can exceed 40°C. Do not touch with parts of
your body (e.g.: hands) and do not put combustible material into contact with the
pump.
The maximum noise produced by the pump, correctly installed and used within the range indicated on
the data plate, is as shown in the table below:
MOTOR POWER
2 POLES 50 Hz
MOTOR POWER
4 POLES 50 Hz
SOUND PRESSURE LEVEL * Lp(A)
dB ± 2
≤ kW 5.5
Up to kW 4 < 70
7.5 kW - 71
11 kW - 73
15 kW - 71
18.5 kW - 73
22 kW - 70
30 kW - 74
Mean sound pressure level at a distance of 1 metre from the pump in a free field.
8. 8. 8. 8. Maintenance Maintenance Maintenance Maintenance
Maintenance operations must be performed by skilled and qualified personnel only.
Use suitable equipment and protection devices. Observe the accident prevention
regulations in force. If you need to drain the pump, make sure that the drained
liquid does not cause damage or injuries.
The pump does not require any routine maintenance. Check the suction filter periodically to ensure that
it is not clogged, and make sure that any liquid cleaning devices are efficient.
As regards unscheduled maintenance, which normally consists of cleaning the liquid ends or replacing
the mechanical seal or other parts subject to wear, please consult our maintenance manual.
Before any pump maintenance operation, ensure that the motor is disconnected
from the electric power mains.