Noise Level - Pentax EN6A Instrucciones De Uso

• SUBMERSIBLE MOTORS •
These are asynchronous, three-phase, with squirrel eage rotor. (Figure 7) .
Windings are made of copperconductors covered by waterproof, insulated and
synthetic material.
The motors are filled up with a mixture of water and anti-freeze liquid that besides
being used to lubricate the bushings fixed on the ends, it also helps disperse the heat
to the outside. The motor axial thrust developed by the pump and by the rotating
parts of the motor, is borne by a strong thrust bearing made of oscillating pressure
blocks.
A compensation membrane is situated in the lower part of the motor to balance the
pressure inside and outside the motor.
Voltage ......................... 230-400V threephase
Frequency ..................... 50 Hz
N° of poles ................... 2
Speed ........................... 2900 RPM
Construction .................. V19 o V3
Insulation class ............. Y
Tolerances of operating data in accordance with Normes I.E.C. 34-1.
ATTENTION!
Different tensions or special motors can be supplied on request while ordering.
The motor supplied is connected to about 4 mtrs. of lead cable.
Electrical connection must be in accordance with electrical tables (see chap.4).
The direction of motor rotation has to adapt correctly to the pump rotation.
ATTENTION! See indication reported in the rating plate put on the pump.
ATTENTION!
The different types of the mentioned pumps with their related letters, components and
performance ranges (capacity / head diagram) are described in the Catalogues.
The main technical characteristics of the pump and motor are described in the
manufacturer's rating plate either on the pump or on the motor (see Figure 8) .
• LIMITATIONS FOR USE OF THE SUBMERSIBLE ELECTROPUMPS
Max. working pressure: see manufacturer's rating plate on the pump
Max. content of solid substances: 40 gr./m
Fluid temperature 25° C (in detail, see tables Figure 9).
Max. working time with closed gate-valve: 4 minutes.
ATTENTION!
Pump not suitable for pumping:
– fluids containing abrasives
– fluids containing solid and fibrous substances
– inflammable and explosive fluids
– chemically aggressive fluids
The pump usage with salt water must be specified while ordering.
Other particular usages must be previously requested to the Technical Office.
ATTENTION! In case of pressure boosting application, it is necessary to check
the max. incoming pressure of the pump in order to avoid any over-pressurization.

• NOISE LEVEL

Radial and semi-axial pumps have noise levels depending on their kind of application.
In normal conditions, the sound level is < 75 dB at about 1 mt. from the set.
In case of pump application with a motor not supplied by PENTAXX , check the noise
level before using.
ATTENTION!
The electropumps with application of shroud for pressure increase service have a
noise level which changes depending on the type of installation; it is therefore
necessary to carry out a noise test after the complete installation, in conformity with
the normes in force in the country.
TECHNICAL SPECIFICATIONS
( other classes if requested )
3
3 3 0
TIPO
P. max.
PUMP RATING PLATE
MOTOR RATING PLATE
TIPO
CV V
Motor
Starts/hour
type
6B(I)3
6B(I)4
6B(I)5
6B(I)7
6B(I)10
6B(I)12
6B(I)15
6B(I)20
6B(I)25
6B(I)30
6B(I)35
6B(I)40
6B(I)50
8B(I)25
8B(I)30
8B(I)40
8B(I)50
8
Fig.7
N°
l/1' m.
±
Fig.8
±
N° kW
A RPM
Water Water
Motor
Starts/hour
temp.
type
max max
°C
8B(I)60
8B(I)75
8B(I)90
30° 8B(I)100 8
8B(I)125
10B(I)90
10 10B(I)100
10B(I)125
10B(I)150
10B(I)180 5
10B(I)200
10B(I)225
25 °
10B(I)250
10B(I)275
10B(I)300 4
8
Fig.9
2
Hz
temp.
°C
20
°
15
°