A4-A6 4- and 6-pole sewage pumps are designed for pumping and conveying 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, in metro systems, 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), along with high-quality components, ensure excellent performance and product reliability.
Advantages of A4-A6 sewage pumps
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; even small stones, gravel, and debris pose no problem. The single-vane, closed impeller resists clogging from wipes, string, and kitchen waste. One advantage of single-channel impeller sewage pumps is that solids entering through the inlet do 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 available only in three-phase versions, 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. They can also send fault notifications by SMS and provide online monitoring.
Installation
The most common way to install pumps in sewage systems is to mount 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 the pump into the pumping station tank along the guide rails, a stainless steel chain or stainless steel cable with suitable strength is used. It is attached to the holes in the bracket on top of the pump, allowing it to remain properly balanced as it is lowered. When installing the coupling foot, remember to keep the bottom of the tank beneath the pump flat; otherwise, cavitation may occur and the pump may wear out faster.
Features
• High-efficiency closed single-channel impeller,
• Moisture sensor in the oil chamber, which protects the motor from water ingress if the mechanical seal behind the impeller is damaged,
• Side flanged outlet allows installation on a coupling foot and easy installation of an elbow fitting 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 bare wire ends,
• Warranty and post-warranty service,
• 24-month warranty.
Special versions designed for liquid temperatures up to 60°C with the pump fully submerged (not for continuous operation) are available to order.
