Submerged asynchronous two-pole rewindable motor made of AISI 304 stainless steel for parts in contact with water. Cooling and lubrication of ball bearings is assured by a special FDA approved coolant. Rotor mounted on two oversized ball bearings (three bearings for 4HP and higher). Stator housed in a stainless steel casing. Graphite/ceramic mechanical seal. Flanging to NEMA 4“. Protection rating IP 68. Heat insulation class F. Removable connector. Vertical/horizontal operation. Maximum working depth: 250 m. Motor suitable for use with variable frequency drive (30Hz-50Hz). Capacitor and manually resettable overload protection located in electrical panel that can be supplied separately for the single-phase version. Overload protection to be provided by the user for the three-phase version.
Motor construction characteristics
STATOR. The rewindable stator is enclosed in an AISI 304L stainless steel jacket. Insulation class F. Compatible with up to 20 starts per hour.
POWER CABLE. All motors are supplied as standard with a removable 4-core cable to allow easy and rapid disassembly/assembly of the motor or part of the pump without any risk of damaging the cable.
SUPPORTS. Upper and lower supports are made of G20 cast iron with protective coating, equipped with carbon-graphite bushes. Support covers in AISI 304 stainless steel.
THRUST BEARINGS SYSTEM
- Oversized high axial load ball bearings.
- Thrust bearing systems vary in compliance with the various different installed power values:
- from 0.5 hp to 2 hp: class 2000 N
- from 3 hp: class 3000 N
- from 4 hp to 5.5 hp: class 4000 N
- from 7.5 hp to 10 hp: class 5000 N
ROTOR SHAFT Rotor shaft extension in stainless steel. The rotor is made of die cast aluminium up to 3 hp and in copper for all motors from 4 hp up to 10 hp.
CAPACITOR Electrical control box for operation of single-phase motors, containing manually resettable overload protection, capacitor, and terminals for electrical connections and connection of pressure switches/float switches if required. Complete with 1.5 m cable with SCHUKO plug CEE 7- UNEL 47166-168. Wall-mounting box in selfextinguishing thermoplastic.
