Application; Application Limits; Installation - EBARA OM4A Installation Manual

INSTALLATION MANUAL

APPLICATION

The OM4A motor can be coupled with any 4" submersible pump having the flange and
joint dimensions according to NEMA standards.
The motor is designed to be submerged and is suitable for the following applications:
• Supply of water from deep wells;
• Domestic and agricultural irrigation;
• Booster pressurizing.
It is strictly prohibited to pump explosive liquids, use the motor in
dangerous environments or install it where people are bathing!
LIMITS OF APPLICATION
• Maximum water temperature: 40 ° C
• Water pH: 6,5 - 8,5
• Maximum starts per hour: 04
• Minimum cooling flow rate: 0.08 m / s
• Maximum immersion depth: 150 m
• Voltage tolerance: ± 10%
• Vertical or horizontal use is allowed
• If the motor is combined with a frequency converter, please contact the Technical
Assistance Department of Ebara.
• Remember that when using the motor in aggressive environments, any anomaly or
malfunction are under the responsibility of the person who installed it.
• If the motor is powered by an electric generating set, it is recommended that:
- Start the generating set before the motor.
- Stop the motor before the generating set.
Motor HP
OM4A 0,5 ~ 10
Table for minimum cooling flow rate (0.08 m/s)

INSTALLATION

• The OM4A motor was designed to work only submerged.
• Don´t move the motor by its cable since this could damage it.
• After mounting the pump, check that the shaft turns freely.
• Choose the installation cable according to the table on the next page.
• Affix the cable on the eductor tube to avoid damage.
Make sure that the motor doesn´t touch the bottom of the well! The
sand could damage the diaphragm. Therefore, keep the motor at
least one meter above the bottom of the well.
Water temp. (°C)
40
Diameter of Well
4"
0,35 m³/h 3,5 m³/h
OM4A
Model
6" 8"
7,3 m³/h
15