Technical data

• Mains supply: 1~230V, 50Hz or 3~400V, 50Hz
• Submersible operation mode: S1
• Submersible operating mode: S2-15 min.; S3 10%
• Submersible operating mode, version K: S1
• Protection class: IP68
• Heat-resistance class of insulation: F
• Temperature of pumped liquid: 3–40 °C, max. 60 °C for 3 min.
• Liquid temperature: 3–40 °C max.
• Free spherical clearance: 44mm
• Cable length: 10 m

Materials

• Motor housing: 1.4301
• Hydraulic body: PP-GF30 (copolymer)
• Operating wheel: PP-GF30 (copolymer)
• Static seals: NBR (nitrile rubber)
• Pump side seal: SiC/SiC
• Motor side seal: NBR (V05), C/MgSiO4 (V06)
• Shaft end: Stainless steel 1.4401

In the «B material version, all parts that come in contact with fluid are made of stainless steel 1.4401 (AISI 316).

Description/construction

The submersible sewage pump is designed as a submersible monobloc unit for stationary and mobile wet well installation.

Hydraulics

Horizontal pressure connection for flange connection The maximum possible dry matter content is 8 %. The design uses free-flow impellers. Pump support is integrated in hydraulic housing.

Electric motor

Surface-cooled or jacketed electric motors in single-phase (with built-in operating condenser) and three-phase versions for direct starting are available:

• Surface-cooled motor: Heat removal is transferred directly to the environment through 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).
• Surface cooled motors
• Motor with cooling jacket: Heat is dissipated by the fluid being pumped through the motor housing. These motors can be used either immersed or non-immersed (S1) for continuous operation.

The motors are also equipped with motor winding temperature sensors. They protect the motor winding from overheating. On units with a single-phase electric motor, they are built into the electrical circuit and work 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 power cable is 10 m long according to the standard, and it comes in the following versions:

• With loose cable ends
• With plug
• With float switch and plug

• Sealing

  There is a seal chamber between the electric motor and the hydraulics. It is filled with white medical grade Vaseline oil. The sealing on the fluid side is by means of mechanical seals.

  The sealing chamber is filled with white medicinal vaseline oil.