4OS / L4C / L6C / L6W / L8W / L10W / L12W

Not necessarily. Check the hydraulic end’s shaft and flange dimensions and its axial load against the proposed motor.

Start with the original motor nameplate, pump code, bore diameter, power supply and water temperature. The well and mounting arrangement determine the cooling conditions.

These are drive motors rather than a complete pump or a hydraulic end. For a replacement, match the motor diameter, mounting interface, supply voltage and allowable axial load as well as the shaft power. Check the water temperature and the flow available for cooling around the motor sleeve. Example applications: Borehole pump motor replacement; Irrigation and water-supply wells.

Nominal diameter: 4, 6, 8, 10 or 12 inches, depending on series. Verify against the complete model code, frequency and operating conditions.

4OS three-phase power range at 50 Hz: 0.37–7.5 kW. Verify against the complete model code, frequency and operating conditions. Family limits may occur on different variants or at different duty points; they must not be assumed to apply simultaneously.

Winding options: Canned or rewindable, depending on model. Verify against the complete model code, frequency and operating conditions.

4OS: oil-filled, rewindable design. L4C and L6C: canned motor options. L6W, L8W, L10W and L12W: water-filled, rewindable motors. Assess these features with flow, head, fluid and installation conditions.

Establish dynamic water level, well yield and sand content. Select motor cooling, cable sizing and electrical protection as part of the complete system.

No. Selection requires dynamic water level, well yield, delivery elevation and pressure, pipe losses and sand content. Installation depth is not total dynamic head. Motor cooling and minimum submergence require separate checks.

The Technical Documents section lists 1 document links. PDFs open on the Parla site. Check model, language, 50/60 Hz and revision; document types may vary by product.

Share minimum, normal and maximum flow, total head, liquid and temperature, power supply, suction and installation conditions. For replacements add the nameplate, connection dimensions and measured operating values.