Overview; Product Description; Technical Features; Applications - Espa O4I Serie Manual De Instrucciones

1.Overview

The following manual contains instructions for installation and use of standard product. Any special versions may be
accompanied by additional documentation.
For more information contact sales/service department, taking care to specify the exact motor code sited on its label.
Read this manual carefully before installing and using the product.

2.Product Description

O4I series includes 4" submersible motors, with oil cooled stator and rotor (white mineral oil approved by F.D.A.)
All motors are combinable to 4'' and 6'' submersible pumps, with flange and coupling sizes complying to NEMA
Standards .

2.1.Technical Features


Oil cooled rotor

Single-phase versions from 0.37 to 3.7 kW

Three-phase versions from 0.37 to 7.5 kW

Insulation class: F

Elements in contact with water in stainless steel

Ball bearing system

Sand guard system

Removable electrical cable with watertight connector for easier repairs or replacement

3.Applications

O4I series motors are suitable to drive submersible pumps, according with EN 60034-1(IEC 60034-1) requirements and
with supply voltage / frequency specified on the rating plate. Motor shaft protrusion and flange dimensions comply NEMA
MG1: 2006 REV 1-2007.
Pump power coupled to the motor must be less than or equal to motor power.
WARNING

3.1.Operating Limits


Maximum immersion depth of motor: 300m

Maximum tolerated stop-start : 30 starts per hour equally distributed

Maximum voltage variation of power supply line: ± 10% of nominal value
f [Hz]
50
50
50

Maximum temperature in well: 35 ° C

Motors are designed to be used in cold water and they should never be used in presence of
corrosive liquids, explosives, very dirty or hard water, in order to prevent deposits on motor external
sleeve.

Minimum water flow speed generated by the pump on motor sides: NEVER less than 0.2 m / s
Fòrmula para la determinaciòn de la velocidad del agua:
where:
s = water speed [m/s]
D = well internal diameter [mm]
w
= pump flow [l/min]
UN
V %
1 230 ±10
3 230 ±10
3 400 ±10
v
8
f [Hz]
60 1 230/115
60 3 230
60 3 400
UN
V %
±10
±10
±10