The four- and six-pole A4-A6 sewer pumps are used to pump and transfer clear liquids and wastewater. Their wide operating range and excellent hydraulic performance make these series particularly suitable for wastewater treatment plants, sewer systems, livestock farming, and industrial pipelines, including those at airports, metro stations, hospitals, and hotels.
Specifications
All main components are made of GG25 cast iron. Two separate mechanical seals (the motor side in the oil chamber and the impeller side in contact with the liquid), together with high-quality components, ensure excellent performance and product reliability.
Advantages of A4-A6 sewer pumps
DRENO four- and six-pole raw sewage pumps are professional products designed for municipal and industrial sewer systems, as well as specialized pumping stations. The large impeller channel allows them to pump raw sewage containing solid and fibrous matter with ease; small stones, gravel, and debris are no problem either. The single-vane, closed impeller resists clogging from wipes, strings, and kitchen waste. One advantage of single-channel impeller sewer pumps is that solid matter entering through the inlet does not split the flow inside the impeller. Instead, the entire contents are discharged and travel along the pump casing wall to the outlet.
Control
A4 and A6 raw sewage pumps are high-power models, ranging from 10 to 60 kW, and are available exclusively in three-phase versions. Therefore, the pumps are controlled by an external signal. We recommend and offer professional power and control panels for operating A4 and A6 pumps, available with relay-contactor or microprocessor control. They can also send SMS alerts in the event of a failure and provide remote monitoring via the internet.
Installation
The most common method of installing pumps in sewer systems is mounting them on a type A or type B coupling elbow in raw sewage or stormwater pumping stations. Mobile installations on a type P stand are used less often. To lower pumps along guide rails into the pumping station tank, slings made of stainless steel chain or stainless steel cable of suitable strength are used. These are attached to the holes in the handle at the top of the pump, ensuring the pump remains properly balanced while being lowered. When installing the coupling foot, remember to keep the bottom of the tank flat beneath the pump; otherwise, cavitation may occur and cause faster wear.
Features
• High-efficiency, closed, single-channel impeller,
• Moisture sensor in the oil chamber protects the motor from water ingress if the mechanical seal behind the impeller is damaged,
• Side flange outlet allows installation on a coupling foot and easy fitting of an elbow connector to a flexible hose using a clamp or quick coupling,
• T1-T2 thermal protection built into the motor winding, for connection to a suitable control panel,
• 10 m H07RNF power cable terminated with bare leads,
• Warranty and post-warranty service,
• 24-month warranty.
On request, special versions can be made for liquid temperatures up to 60°C with the pump fully submerged (not for continuous operation).
