A4-A6 sewage pumps with 4- and 6-pole motors are designed for pumping and conveying clear liquids and wastewater. Their wide range and excellent hydraulic performance make these series particularly suitable for wastewater treatment plants, sewer systems, animal husbandry facilities, and industrial pipelines, such as those at airports, in metro systems, hospitals, and hotels.
Features
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 sewage pumps
The four- and six-pole DRENO raw sewage pumps are professional products for use in municipal and industrial sewer systems, as well as in specialized pumping stations. Thanks to the large passage in the impeller channel, they can easily pump raw sewage containing solid and fibrous particles; small stones, gravel, and debris are no problem either. The single-vane closed impeller is resistant to clogging by wipes, strings, or kitchen waste. The advantage of single-channel impeller sewage pumps is that solid particles entering through the inlet do not split the flow in the impeller; instead, the entire contents are discharged outward and travel along the pump housing wall to the outlet.
Control
A4 and A6 raw sewage pumps are high-power models rated from 10 to 60 kW and are available exclusively in three-phase versions; therefore, pump control is carried out using an external signal. For controlling A4 and A6 pumps, we recommend and offer professional power and control panels with relay-contactor or microprocessor-based control. SMS fault notifications and internet monitoring are also available.
Installation
The most common method of installing sewage pumps is mounting them on a coupling elbow DUTY, type A or type B in raw sewage or stormwater pumping stations. Mobile installations on a stand type P are used less frequently. To lower the pump into the pumping station tank along guide rails, a stainless-steel chain or stainless-steel cable of suitable strength is used. These are attached to the openings in the handle at the top of the pump, ensuring proper pump balance during lowering. When installing the coupling foot, ensure that the bottom of the tank beneath the pump is level; otherwise, cavitation cavitation may occur, resulting in accelerated wear.
Features
• High-efficiency single-channel closed impeller,
• Moisture sensor in the oil chamber to protect the motor against flooding if the mechanical seal behind the impeller is damaged,
• Side flanged outlet enables installation on a coupling foot and easy installation of an elbow connection for a flexible hose with 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 free leads,
• Warranty and post-warranty service,
• 24-month warranty.
Special versions for liquid temperatures up to 60°C with the pump fully submerged can be manufactured to order (not for continuous operation).
