Lowara 4OS55T/3W is a 5.5kW replacement motor for Lowara GS and other compatible 4-inch bore-pump ends. It can replace a failed motor while retaining a serviceable pump section.
Lowara pump-end models at this power: 6GS55, 6GS55R, 8GS55, 8GS55R, 12GS55R, 16GS55, 16GS55R. The links identify the corresponding complete pump packages.
This three-phase motor requires suitable starting equipment and overload protection. Your installer can check whether the existing equipment can be retained and set it to suit the new motor.
The motor lead is included. The pump end, external control panel and cable jointing kit are not included. Extend the lead with correctly sized submersible cable and a waterproof joint suited to the installation.
Keep the motor submerged and provide water flow around its exterior for cooling. The standard water-temperature limit is 35°C with adequate cooling flow. A cooling sleeve may be needed in a wide bore or tank. Maximum motor submergence is 150m below the water surface. Do not run dry.
The oil-filled motor has windings that can be rewound during repair. It has a stainless-steel outer sleeve and a mechanical seal protected by a sand guard.
Replacement considerations
The standard NEMA connection allows cross-brand replacement where the pump and motor are correctly matched. Your installer needs to confirm that the motor can drive the pump and that the coupling, controls and installation suit the replacement. A higher motor rating does not by itself increase pump flow or pressure.
If the installation uses a variable-speed controller, confirm the motor version before ordering. The 4OS installation manual specifies a specially ordered motor for frequency-converter operation.
Two-year warranty, subject to the applicable Australian Lowara supply terms and consumer rights.
Lowara 4OS Motor Technical Data
Lowara 4OS Installation: three-wire single-phase and three-phase motors
