A4-A6 4- and 6-pole sewage pumps are designed for pumping and transferring clean 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, such as those at airports, in metro systems, hospitals, and hotels.
Specifications
All main components are made of GG25 cast iron. Two separate mechanical seals (on the motor side in the oil chamber and on the impeller side in contact with the liquid), along with high-quality components, ensure excellent performance and product reliability.
Advantages of the A4-A6 sewage pump
DRENO four- and six-pole raw sewage pumps are professional products for use in municipal and industrial sewer systems, as well as in specialized pumping stations. The large impeller channel allows them to pump raw sewage containing solid and fibrous matter without difficulty. Small stones, gravel, and debris are no problem either. The single-vane enclosed impeller is resistant to clogging by tissues, 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 in 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 rated from 10 to 60 kW and are three-phase only, so they are controlled by an external signal. For controlling A4 and A6 pumps, we recommend and offer professional power and control panels with relay-contactor or microprocessor control. These also provide fault notifications via SMS and remote monitoring over the internet.
Installation
The most common way to install pumps in sewage systems is to mount them on a DUTY coupling elbow, type A or type B, in raw sewage or stormwater pumping stations. Less commonly, mobile installations on a type P stand are used. For lowering the pump along guide rails into the pumping station tank, slings in the form of a stainless steel chain or suitably strong stainless steel cable are used. These are attached to the holes in the handle at the top of the pump, allowing it to remain properly balanced while being lowered. When installing the coupling foot, ensure that the bottom of the tank beneath the pump is flat; otherwise, cavitation may occur, causing faster wear.
Features
• High-efficiency, single-channel closed impeller,
• Moisture sensor in the oil chamber, protecting 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 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 with stripped ends,
• Warranty and post-warranty service,
• 24-month warranty.
Special versions for liquid temperatures up to 60°C with the pump fully submerged can be made to order (not for continuous operation).
