Nocchi Sensormat

Summary

Product Identification

Nocchi Sensormat are automatic pressure booster sets designed for installation on water mains. They feature a compact, robust design with high hydraulic performance and pipelines constructed from AISI 304 stainless steel. These units operate with a three-phase electric power supply, transducer control, and fixed speed.

Operating Limits

• Maximum Operating Pressure:
  • 16 bar (for VLR 16, MULTINOX-VE, SM. 2.1, SM. 30/31 models)
  • 12 bar (for SMD30 model)
• Ambient Temperature: +50° C

Electrical

• Power Supply Voltage: 400 V
• Pump Start-up:
  • Direct up to 7.5 kW inclusive
  • Star/Delta over 7.5 kW
• Electric Pump Protection Rating:
  • IP55 (general)
  • IP44 (for MULTINOX-VE)
• Electrical Panel Protection Rating: IP54
• Three Phase Electrical Panel Features:
  • IP 54 metal enclosure
  • Main switch
  • Keypad with SA electronic board
  • Fuses, contactors, and thermal relay for each pump
  • Transformer with fuses for auxiliary circuit
  • M-0-T selector for each pump
  • Delta-Star starter for motors over 7.5 kW

Mechanical / Hydraulic

• Pump Type: Centrifugal, multi-cell, vertical axis (MULTINOX-VE / VLR)
• Base: Galvanized steel profile
• Suction Manifold (AISI 304 stainless steel):
  • 1 water filling hose
  • 1 brass ball valve
  • 1 check valve (per electric pump installed)
• Delivery Manifold (AISI 304 stainless steel):
  • 1 pressure gauge
  • 1 pressure transducer (0-5 Volt – 0-10 Bar)
  • 1 brass ball valve (per electric pump installed)
• General Performance Data:
  • Number of Pumps:
    • 2 pumps: Maximum flow rate 1400 L/min (84 m³/h)
    • 3 pumps (0 pilot): Maximum flow rate 2100 L/min (126 m³/h)
    • 3 pumps (1 pilot): Maximum flow rate 2100 L/min (126 m³/h)
  • Application Data (Selected Models):
    • VLR 16, SM. 2.1, SM. 30/31: Maximum flow rate 42 m³/h, Maximum head 91 m.c.a.
    • VLR 32, MULTINOX-VE, SM. 21, SM. 30/31, SMD30: Maximum flow rate 84 m³/h (for VLR 32, MULTINOX-VE, SM. 21, SM. 30/31), 126 m³/h (for SMD30); Maximum head 89 m.c.a. (for VLR 32, MULTINOX-VE, SM. 21), 109 m.c.a. (for SM. 30/31, SMD30).
• Detailed Hydraulic Performance, Dimensions, and Weights:
  • Detailed performance tables, dimensions, and weights are provided for specific models (e.g., SMD30-MXV200, SMD21-VLR16, SM.21-VLR32, SMD30-VLR16, SM.30-VLR32, SMD31-VLR16, SMD31-VLR32).
  • See the official PDF for exact tabulated values.

Control and Features

The pumps are controlled via an electrical panel with an electronic board linked to an electronic transducer that reads the outlet pressure.

• Keypad: Enables entry of unit configuration parameters and settings (start/stop pressures, timers).
• Operation: Pumps start and stop when mains pressure reaches the set value.
• Pump Sequencing: Inverter automatically switches the pump start sequence at the end of each cycle.
• Gradual Start-up: For large water demands, the electronic board applies a gradual start-up to avoid sudden pressure variations and power supply overload.
• Main Functions:
  • Sequential inversion of pump start-up at the end of each work cycle.
  • Settable timer (0 to 255 sec.) for pump operation after pressure switch contact opens or operating pressure values are reached.
  • ON/OFF control of tank level (first collection) or supply pipeline pressure via float switch or differential pressure switch.
  • Sequential control of pump start-up to prevent simultaneous activation.
• Signals and Controls:
  • LCD display for operating parameters and configuration.
  • Power ON indicator LED.
  • Indicator LED for low water level in tank or low pressure on water supply line.
  • Indicator LED for overload thermal cut-out trip.
  • Automatic/Manual mode indicator LED.
  • Pump running indicator LED for each pump.
  • Buttons for automatic/manual control selection.
  • Start-stop button for each pump in manual mode.
  • Button to enter configuration parameters.
• External Control Devices:
  • Differential pressure switch (settable as ON/OFF for each pump)
  • Electric pressure transducer (0-5 V)
• Accessories (available on request):
  • SDM: Float switch for protection against dry running.
  • SMY: Differential pressure switch for inhibition in event of mains pressure failure.
  • Electrodes for electronic level control.
  • Membrane autoclaves.

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Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions from the original OEM PDF datasheet. Contractual data must always match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror