Drainage pumps are designed to pump out and transport clean water and wastewater. The products of the well-known Danish company Grundfos (Grundfos) are highly valued. Despite the fact that the equipment belongs to the category of expensive, it is in great demand on the Russian market. This is due to high quality, performance and power.
Characteristics of drainage pumps Grundfos
All equipment of the Danish company is made of high quality steel, which guarantees durability and a high degree of reliability. After production, each pump is tested to verify its functionality. The body is sealed, its surface is covered with a special paint, which additionally provides protection against corrosion.
Grundfos drainage pumps are characterized as follows:
- duration of operation;
- high level of wear resistance;
- compact size;
- the presence of a float switch.
During the manufacture of the pump, the rotor cavity is filled with an environmentally friendly liquid, which increases the wear resistance and safety of the user.
The lineup
Key models on the market:
- Grundfos Unilift KP 150 a1 - designed for pumping clean and dirty water, equipped with a wet rotor, which guarantees wear resistance. All equipment parts are made of stainless steel. An added benefit is that there is no need for maintenance.
- Grundfos Unilift KP 250 a1 - equipped with a float switch, it is more often used at home, since it is small in size and is suitable for working in a pit.
- Grundfos Unilift KP 350 a1 - designed for pumping clean water. It has compact dimensions, weight is 7.9 kg. This feature allows it to be installed in narrow wells. Equipped with a built-in float switch.
- Grundfos Unilift CC 5 a1 - pumps clean and polluted water, the size of solid particles should not exceed 10 mm. Equipped with a universal pressure line connection, a cooling jacket and a float switch.
Before buying, it is important to calculate the capacity of the equipment that will cope with the tasks at hand.
Criterias of choice
When purchasing drainage submersible or surface pumps, they pay attention to important criteria:
- The size of solid particles that the unit is capable of passing through itself. It is better to study the maximum allowable parameters, it will depend on where to use the equipment.
- Specifications: operating temperature, maximum head, float, power and performance.
- Maximum permissible immersion depth.
- Installation methods - horizontal or vertical position.
There is no need to buy the most expensive and powerful models. If the sump pump runs idle, it will fail faster.
Installation features
- Check that all necessary parts are present and refer to the enclosed instructions for use.
- Install the equipment in a vertical or horizontal position, as required by the instructions, and connect the line to the discharge pipe.
- Connect the equipment to the mains and measure the flow.
- Disconnect the power supply and replace the phase, repeat the previous step.
- Compare the indicators and choose the right one.
Installation is carried out carefully in accordance with the instructions. If the installation is performed incorrectly, the equipment may not work, quickly fail, or its performance will be reduced.
Advantages and disadvantages
The key advantages of Grundfos drainage pumping stations include the following technical characteristics:
- The high build quality and materials used ensure the device's operation for many years.
- Equipped with a float switch that monitors the water level.
- The ability to manage not only stationary, but also autonomously.
- Equipped with a built-in thermal protection system.
Of the shortcomings, the high cost and the need for constant connection to the power supply network during operation are most often distinguished.
The price of a drainage pump for dirty water Grundfos, as a rule, is 1.5 times higher than that of analogues. The initial cost is 2,000 rubles. It is better to purchase equipment from official representatives or in specialized large stores.
