Isar MODH1-E-1

Design

Application

• Fully automatic water supply and pressure boosting in inlet mode, either from the public water supply network or from a tank, for domestic, commercial, industrial and municipal applications (e.g. residential, office, administration buildings, hotels, hospitals, trades, industry, water supply companies).
• Pumps drinking water, process water, cooling water or other industrial water, which does not affect the materials used, neither chemically nor mechanically, and does not have any abrasive or long-fibre constituents.

Equipment/function

• 1 Medana CH3-LE pump per system
• Components that come in contact with the fluid are corrosion-resistant
• Electrogalvanised base frame with height-adjustable oscillation absorbers for insulation against structure-borne noise
• Stop valve on every pump on the suction and discharge sides
• Non-return valve, on the discharge side
• Pressure sensor, on the end pressure side
• Pressure gauge optional, on the suction side
• Pressure gauge, on the end pressure side
• Low-water cut-out switchgear
• Control via integrated frequency converter

Type key

Technical data

• Mains connections:
  • 3~400 V ± 10%, 50 Hz;
  • 3~380/440 V ±10%, 60 Hz;
  • depending on type also 1~230 V, 50/60 Hz (other versions on request)
• Max. fluid temperature: 50 °C (70 °C optional)
• Max. ambient temperature: 40 °C
• Operating pressure: 10 bar
• Inlet pressure: 6 bar
• Nominal connection diameter for end discharge side: R 2"/DN 100
• Nominal connection diameter inlet side: R 2"/DN 100
• IP rating: IP54
• Fuse on mains side: A, AC 3 according to motor power and EVU regulations
• Approved fluids (other fluids on request): Approved fluids are generally waters which do not attack the materials used, neither chemically nor mechanically, and do not contain any abrasive or long-fibre constituents.
  • Cooling water
  • Drinking and process water

Materials

Single pump:

• Impellers, stage chambers and pump housing made of stainless steel 1.4301/1.4404
• Shaft of stainless steel 1.4404
• EPDM gasket (EP851)/FKM (Viton)
• Mechanical seal made of tungsten carbide/carbon
• Bearing of tungsten carbide
• Pump support foot made of aluminium

Construction

• Base frame: electrogalvanised and with height-adjustable oscillation absorbers for comprehensive insulation against structure-borne noise; other versions on request
• Pipework: complete pipework made of stainless steel, suitable for the connection of all piping materials used in building services; the pipework dimensions must correspond to the overall hydraulic performance of the pressure-boosting system.
• Pump: One pump from the Medana CH3-LE series 2.., 4.., 6.., 10.., 16..; all pump components that come in contact with the fluid are made of 1.4301/1.4404 stainless steel.
• Valves: each pump is equipped on the suction and discharge side with a stop valve or with annular shut-off valves and a discharge-side non-return valve.
• Diaphragm pressure vessel: 8 l/PN 10 on the end pressure side with butyl rubber diaphragm, completely safe according to the food safety regulations; ball valve and drain and throughflow fitting according to DIN 4807 for test and inspection purposes
• Pressure sensors: 4 to 20 mA, one each on the suction and end pressure sides for pressure control by the integrated frequency converter.
• Pressure indication: Pressure gauge (ø 63 mm) on the end pressure side; additional digital display of the end pressure in the graphics display of the pump
• Controller: the control of the system is realised by the frequency converters integrated in the pump

Scope of delivery

• Factory-mounted, pressure-boosting system ready for connection and checked for functionality and impermeability
• Installation and operating instructions
• Factory test protocol