CALPEDA 4SM 35 submersible borehole pump kit 4" with variable speed drives kit - 230V 3.5 m3/h

The variable speed drive starts the pump when the taps are opened and stops it when they are closed. The flow rate varies according to the water demand at the point of use, while the pressure remains constant. Easy drive setup (drop-down menu), status display on the LCD screen. The drive protects the pump against: dry running - overcurrent - undervoltage or overvoltage.

Use:
- Operating range: from 1.5 to 3.0 m3/h with TDH up to 116 m.
- Clean liquid, sand content of the water: 150 grams per m3 pumped.
- Pumped liquid temperature range: from 0 °C to + 35 °C.
- Starts per hour: 20 max. at regular intervals.

Installation:
- In a 4" cased borehole.
- In a tank, reservoir or cistern (horizontally in a cooling sleeve). See submersible pump accessories.

Advantage:
- Complete ready-to-use kit.
- Does not require a large tank (8L).
- Works without an electrical protection panel and protects against lack of water.
- Only 1 setting = desired pressure.
- Operating flexibility thanks to constant pressure.
- No more water hammer.
- Energy savings thanks to efficient motor operation (three-phase 230V).
- Longer pump service life.

Hydraulic specifications of the 4SM pump:
- Submersible pump with radial impellers.
- NORYL impellers and diffusers
- Pump body, stage casing, pump head, suction bracket and screws in 304 stainless steel.
- 430 stainless steel shaft.
- Very resistant floating anti-sand (anti-abrasion) ring.
- Connection flange with built-in technopolymer strainer.
- Built-in plastic non-return valve.
- Compliant pump (CE).

Motor specifications:
- Encapsulated, asynchronous submersible motor, 2 poles (2900 rpm), three-phase 230V.
- Entirely in AISI 304 stainless steel.
- Rotor designed to withstand axial loads.
- Number of starts: max 20/h.
- Protection rating: IP 68.
- Insulation class: F.
- Continuous duty.

Contents of the kits:
- 1 4" submersible pump (0.75, 1.10 Kw or 1.50 Kw).
- 1 ACS food-grade electric cable: PBS-R (variable length, see table below).
- 1 food-grade electric cable PBS-R.
- 1 suspension rope, in 316 stainless steel cable, diameter 4 mm + stainless steel cable clamps.
- 1 watertight cable joint made in the factory.
- 1 variable speed drive kit, with stainless steel manifold, pressure sensor, wall mounting, 8-litre tank, stainless steel valve, pressure gauge.
- 1 borehole head, with stainless steel dome, stainless steel valve, stainless steel check valve, stainless steel elbow, male straight fitting, with external polypropylene clamping for PE 40 pipe.