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4" submersible pump motor
Water filled - Threephase 400 V

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Standard submersible pump motor, for use in all brands of submersible pump.

Conditions of use:
  • The motor, in standard use, functions when submerged in fresh water, which is free of gas and abrasive substances.
  • Water temperature should not exceed 30°C and the speed of water flow along the outer motor sleeve should not be under 0,3 m/ sec. (If water temperatures are higher, a reduction in power may be required.)
  • Using the motor in any other liquid apart from water is forbidden, especially if there are substances derived from hydrocarbons such as petrol, oil, kerosene etc...
  • Do not use in an area where there is a risk of explosion.
  • The motor should never be used out of water, (only for a brief period to check the direction of rotation).
  • The motor is provided with a ratings plate displaying its characteristics.

Construction principle:

4" asychronous submersible 2 pole electric motor; made entirely of stainless steel for the parts in contact with water.

The cooling and lubrication of the thrust bearing and bushing are ensured by a mixture of water and glycol, as required by the law for the protection for food uses. (Mixture of distilled water with 20% polypropylene glycol and glycol).

The rotor is mounted on a Kingsbury self-centering thrust bearing designed for bearing high axle loads.

The stator is enclosed in a sealed jacket with flanges and inner and outer motor sleeve in AISI 304L stainless steel.

The connector can be removed from the cable to enable simple and quick maintenance tasks.

The cable is certified ACS, WRAS and KTW. The motor is suitable for use with a speed controller (30 Hz-50 Hz).

Slide bearings lubricated with water. The axial stop is the tilting pad type (Kingsbury) with carbon disk.

Compensating bellow for volume variation of internal liquid.

Cable with removable connector with water-tight seal.

Before final installation one must check that:

  • Motor power is adapted to the pump being coupled.
  • Voltage and number of phases correspond to the power supply available.
  • The main power supply can support the power of the motor.
  • For the 50 Hz single phase mode, the capacitor and manual reset overcurrent protection have been placed in the electrical box provided separately.
  • For the three phase model, the protection must be provided by the user.

Oil-filled motor.

  • Standard NEMA 4" flanges.
  • Protection index: IP 68.
  • Rewindable motor.
  • Built-in thermal protection in single phase up to 1,1 kW.

All motors are delivered with a connector.

The electrical lead is included:

  • 1,7 m in length for motors up to and including 2.2 kW.
  • 2,7 m in length for 3 kW and above motors.
  • 3,5 m in length for 7,5 kW motors.
Voltage tolerance : +6% -10%.
IP68 protection.
Class F.
Maximum liquid temperature: 35°C.
Minimum exterior liquid speed: 0,3 m/s.
Maximum depth of immersion: 300m.
Maximum number of start ups:20/h.
Download the instructions for submersible pump motors
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