Standard spec
- Control method
- Control method: Constant estimated terminal pressure water supply with Valuable Frequency Drive
- Operation method
- Operation method: 2/3 units rotary
- Installation location
- Installation location: Indoor and outdoor (ambient temperatur: -5~)40°C, Humidity: 90%RH or less, Altitude: 1000m or less
- Liquid
- Fluid quality: Clean water
Fluid temperature: 0~40°C (No freezing)
- Materials
- Impeller: Stainless cast steel (304)
Casing: Stainless cast steel (304)
Shaft: SUS304
- Pump cover
- Pump cover: SUS304 (Hairline finished)
- Motor
- Type: Permanent Magnet motor (TEFC indoor)
Power source: Three phase
Poles: 8 poles (4 poles: 3.7kW or less)
Efficiency: IE5 equivalent (3.7kW or less), IE4 equivalent (5.5kW or more)
- Back pressure
- Back pressure: 0.75MPa or less
- Back flow prevention device
- Back flow prevention device: Pressure reduction type: Dual back flow preventer (different bore size)
- Control panel
- Major devices: 3 Inverters (individually for pump), 3 Earth Leakage Breakers (individually for pump), Noise filter, Arrester, DC reactor
Normal indication: Power, Operation (individual), Operation current & frequency selective indicator (individual), Dis. & Suc. head (selective indicator in control panel), Cumulative operation hours, Cumulative operation counts
Abnormal indication: No.1, 2, 3 pump individual fault (pump & inverter is mixed), Earth leakage, Suction pressure drop, During Inspection work, Abnormal level of overhead tank
External signal (voltage-free: always OPEN contactor): Operation (individual pump), Fault (individual pump), Suction pressure drop, During inspection work, Abnormal water level of overhead tank
Standard Accessories
Pump: 3 units pumps made of Stainless steel
Control panel: ECSK2-R type
Flow sensor
Pressure transmitter: 1 pc for Suc. and 1 pc for Dis.
Check valve: Valve body: Resin
Sluice valve
Accumulator: PTD3-1 type
Condensed water tray
Optional Accessories
Vibration proof joint
Remote monitoring device
Pipe silencer
Accumulator
Foundation bolt
Heater