- Control method
- Control method: Constant estimated terminal pressure water supply with Valuable Frequency Drive
- Operation method
- Operation method: Alternate operation
- Installation location
- Installation location: Indoor and outdoor (ambient temperatur: -5~)40°C, Humidity: 90%RH or less, Altitude: 1000m or less
- Fluid quality: Clean water
Fluid temperature: 0~40°C (No freezing)
- Impeller: Stainless cast steel (304)
Casing: Stainless cast steel (304)
- Pump cover
- Pump cover: SUS304 (Hairline finished)
- Type: Permanent Magnet motor (TEFC indoor)
Poles: 4 poles (3.7kW or less), 8 poles (5.5kW or less)
Power source: Single phase (0.75kW, .1.1kW), Three phase
Efficiency: IE5 equivalent (1.1~3.7kW), IE4 equivalent (0.75, 5.5, 7.5kW)
- Back pressure
- Back pressure: 0.75MPa - Boosting set head (MPa)
- Back flow prevention device
- Back flow prevention device: Pressure reduction type, model: Dual back flow preventer (different bore size)
- Paint color (Munsell No.)
- Paint color (Munsell No.): Control panel: Beige (5Y7/1), Accumulator: Gray (10Y5.5/0.5)
- Control panel
- Major devices: Individual inverter for each pump, Earth Leakage Bleaker, Noise filter.
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 & No.2 pump individual fault indicator (pump and inverter are mixed), Earth leakage, Suction pressure drop, During inspection work, Abnormal water level of overhead tank.
External signal (voltage-free: always OPEN contactor): Pump individual operation, Pump individual fault indicator (pump and inverter are mixed), Earth leakage, Suction pressure drop, During inspection work, Abnormal water level of overhead tank.
Pump: 2 units pump made of Stainless steel
Control panel: ECSK3-A type
Pressure transmitter: 1 pc for Suc. and 1 pc for Dis.
Check valve: Valve body: Resin
Ball valve: Stainless
Accumulator: PTD3-1 type
Ceramic heater: 4 pcs.
Vibration proof joint