Application

• Discharge of sewage and sump from buildings, factories, hospitals, apartments, etc.

Feature

• The closed-type non-clog impeller and our original casing structure provide high pumping performance.
• Equipped with a motor with built-in auto-cut (7.5kW or less) to prevent motor burnout.
• Motor with output of 11kW or above can detect abnormal temperature rise of the motor coil and output as an external signal. (Implement a circuit in the control panel when use it as a protection devise)
• Two types available: flange type and pedestal support type for easy maintenance and inspection.
• Built-in automatic type ("L") and automatic alternative type ("LN") with float switch are available.
• Protection circuit for electric parts is equipped on the models with float switches.
• Evaluated item* of by (C) Public Buildings Association., Ltd. in Japan. * BU4-H type does not completely match.
• High pump head type (BU4-H type) is also available.

Standard spec

Application liquid

• Fluid quality: For sewage (Hydrogen ion concentration pH5~9)
• Fluid temperature: 0 to 40 °C

Materials

• Impeller: Cast iron
• Shaft: SUS420J2
• Casing: Cast iron

Motor

• Type: Dry-sealed motor (auto-cut built in 7.5kW or less)
• Power source: Three phase
• Speed: 50Hz: 1,500 min-1, 60Hz: 1,800 min-1
• Max. submersing depth: 8m

Structure

• Impeller: Non-clog
• Shaft sealing: Double mechanical seal (liquid side: SiC x SiC, Motor side: Ceramic x Carbon)
• Seal oil: Turbine oil
• Bearing: Closed ball bearing
• Flange figure: JIS10K thin type
• Paint color (Munsell No.): Scarlet (5R3/12)

Standard Accessories

• Flange type: Pump body(with 10m 4 core submersible cable)
• Flange type: Connecting bend pipe(Bolts for attaching pump body with companion flange (exclude 150mm bore size models))
• Pedestal support type: Pump body(with 10m 4 core submersible cable)
• Pedestal support type: Connecting pipe(Bolt for attaching pump)
• Pedestal support type: Pedestal support(One set support with companion flange (exclude 150mm bore size models))
• Pedestal support type: Chain(4m)

Optional Accessories

• Control panel
• EBA type full water level alarm control panel
• EFS type trouble detector for drainage pump
• Check valve for sump
• Float switch