DAB S4 3/19 MTS KIT 4OL – 4" submersible borehole pump with electronic pressure switch, 1.1 kW, 1 × 230 V – SALE

Product detailed description

The DAB S4 3/19 MTS KIT 4OL kit (code CS4C19MTS) combines the S4 3/19 submersible centrifugal pump with a single-phase oil-filled 4OL motor and the accessories needed for automatic operation. It is designed for pumping clean water from drilled wells and boreholes larger than 4" in diameter and for supplying buildings with water; S4 pumps are also used for pressurising distribution networks, irrigation or washing systems.

Kit contents

• S4 3/19 submersible pump with 4OL motor for 1 × 230 V, P2 output 1.1 kW (1.5 HP)
• starter box
• 11 l surge pressure vessel
• CONTROL D control unit – an electronic pressure switch that starts and stops the pump according to water demand and protects it against dry running

Pump and motor

The S4 hydraulics have 19 stages with a nominal flow of 3 m³/h: head is 105 m at zero flow, 72 m at 3 m³/h and 42 m at 4.2 m³/h. Impellers and diffusers are made of technopolymer; suction rings, outer casing, shaft, coupling, suction strainer and cable guard are stainless steel, and the suction and delivery bodies are precision-cast AISI 304 steel; the non-return valve is built in. The 4OL motor is a two-pole asynchronous motor with water-contact parts in AISI 304L; its bearings are cooled and lubricated by a special food-grade fluid and the shaft is sealed by a carbon/ceramic mechanical seal. Rated current is 8.5 A.

Operating conditions

The water must be clean and free of abrasive and solid matter, with a sand content of up to 150 g/m³ and a temperature of 0 to +40 °C. Maximum immersion with the 4OL motor is 250 m and the pump may start no more than 20 times per hour; protection rating IP 68, insulation class F. The outlet has a G 1 1/4" thread. The pump is installed vertically; for horizontal installation the manufacturer recommends a cooling jacket. Where the outlet pressure is high, fitting a pressure-reducing valve is recommended. The electrical installation must be carried out by a qualified electrician.

Technical data

Frequently asked questions

What does the S4 3/19 MTS KIT 4OL kit include?
The S4 submersible pump with oil-filled 4OL motor, a starter box, an 11 l surge pressure vessel and the CONTROL D control unit. The unit switches the pump according to water demand and protects it against dry running.

Which borehole is the pump suitable for?
It is a 4" pump for wells and boreholes with a diameter larger than 4". With the 4OL motor it can be submerged down to 250 m.

Can the pump run horizontally?
It is normally installed vertically. Horizontal installation is possible, in which case the manufacturer recommends a cooling jacket.

What if the pump produces high pressure?
Where the outlet pressure is high, fitting a pressure-reducing valve is recommended. At zero flow the S4 3/19 hydraulics reach a head of up to 105 m.