All Products >> Agriculture & Residential Pumps >>Centrifugal Monoblock Pumps – ACM Series


  • C.R.I. Centrifugal Monoblock pumpsets are powered by a totally enclosed fan cooled AC

    induction two pole motor. Motor stator is made of low watt loss silicon steel laminations

    assembled under pressure and rigidly locked in the frame. The windings are of high-grade

    enameled copper wire and are varnish impregnated. Construction of motor frame and

    usage of quality materials result in high performance and low temperature rise thereby

    increasing the life cycle of the motor.


    • Domestic
    • Irrigation
    • Farms
    • Gardens
    • Industry
    • Civil applications


    Clean, thin, non-aggressive, non explosive, clear, cold, fresh water without abrasives, solid particles or fiber having the following characteristics


    • High operating efficiency resulting in lower power consumption.
    • Good suction lift characteristics
    • Dynamically balanced rotating parts including rotor and impeller
    • Balanced and rigid construction
    • Back pull-out design for easy servicing & repair
    • Single shaft ensures permanent & correct alignment
    • Inbuilt thermal over load protector in all single-phase pumpsets (1.5kW)


    Power range 0.37kW to 2.2kW (0.5 HP – 3.0 HP)
    Speed 2880 RPM
    Versions Single-phase, 220 – 240V, 50Hz, AC Supply. Permanent Split Capacitor (PSC), Three-phase, 380 – 415V 50Hz, AC supply
    Maximum total head 40 metre
    Maximum flow rate 19 lps (68.4 m /hr)
    Maximum suction lift 7 metre
    Degree of protection IP 44 / IP 54
    Class of insulation B / E
    Maximum ambient temperature 40° C
    Sealing Mechanical seal
    Type of duty S1 (Continuous)
    Direction of rotation Clockwise from driving end.
    Nominal pumpset size
    (Suction x Delivery)
    25 x 25, 32 x 25, 40 x 32, 40 x 40, 50 x 40,
    50 x 50, 65 x 50, 80 x 65 & 80 x 80 mm

    Material of Construction

    Material of Construction
    Part Name Material
    Rear cover / Bracket Cast iron
    Motor frame Cast iron / Aluminium
    Shaft SS – 410
    Impeller Cast iron / SS – 304
    Pump casing Cast iron
    Sealing Mechanical seal (Carbon & Ceramic)


    Maximum liquid temperature 33°C (max.)
    Permissible amount of sand 50g/m³ (max.)
    Allowable solid 3000 ppm (max.)
    Chlorine ion density 500 ppm (max.)
    Turbidity 50-ppm silica scale (max.)
    Hardness (Drinking water) 300 ppm (max.)
    Specific gravity 1.004 (max.)
    Viscosity 1.75 x 10 m2/sec (max.)
    pH Value 6.5 to 8.5


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