Technical Specifications

• Mains connection: 1~230 V, 50 Hz or 3~400 V, 50 Hz
• Operating mode in immersed state: S1
• Non-submersible operating mode: S2-15 min; S3 10%
• Operating mode immersed, K version: S1
• Pressure connection: G2
• Protection class: IP68
• Insulation temperature class: F
• Pumping temperature: Fully submersible: 3 - 40 °C, max. 60 °C for 3 min.
• Free spherical clearance: 10 mm
• Cable length: 10 m

Materials

• Motor housing: 1.4301
• Fluid body: PP-GF30 (copolymer)
• Impeller: PP-GF30 (copolymer)
• Static seal: NBR (nitrile rubber)
• Seal at pump side: SiC/SiC
• Motor side seal: C/Cr
• Shaft end: Stainless steel 1.4401
• In material version "B" all parts in contact with pumped liquid are made of stainless steel 1.4401 (AISI 316).

Description/construction

The submersible wastewater pump is constructed as submersible monobloc unit for portable wet well installation.

Hydraulics

Outlet on the pressure side is designed as vertical threaded flange connection. Open multi-vane impeller is used. A suction filter is integrated into the hydraulic housing.

Electric motor

Surface-cooled or jacket-cooled motors in single-phase (with built-in operation capacitor) and three-phase version for direct starting are available:

Surface-cooled motors: The heat is given off directly to the environment via the motor housing. The motors can be operated in immersed state in continuous duty (S1) and in non-immersed state in intermittent duty (S2) or intermittent duty (S3).
Motors with cooling jacket: The heat is dissipated by the fluid being pumped through the motor housing. These motors can be used either immersed or non-immersed (S1) in continuous duty.
In addition, the motors are equipped with sensors for monitoring the temperature of the motor winding. They protect the motor winding from overheating. On units with a single-phase motor, they are integrated into the electrical circuit and operate automatically without an external device. That is, the electric motor is switched off when overheated and is automatically switched on again after cooling down. According to the standard, bimetal sensors are used for this purpose.

The standard supply cable is 10 m long and is available in the following versions:

• With loose cable ends
• With plug
• With float switch and plug
• Pump with vertical float switch

The VA version of the pump is equipped with a vertical float switch. The switching level is preset by means of two floats on the threaded rod. This version requires less space than conventional float switches and is suitable for use in narrow sumps.

Seal

There is a seal chamber between the electric motor and the hydraulics. It is filled with white medical Vaseline oil. The fluid-side and motor-side seals are provided by sliding mechanical seals.