Ashish Auto

CRI Centrifugal Monoblock Pump (ACM Series)

C.R.I. Centrifugal Monoblock pumpsets volute chamber and impellers are designed to give the best possible hydraulic efficiency and suction lift. Sealing is by means of a bellows mechanical seal made of carbon and ceramic is fitted over the shaft, which is ground to close tolerance. TheseĀ  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. Dynamically balanced rotor ensures vibration free and noise free operations and increases the life of the bearings and seal. 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. A thermal cutout relay (motor protector) is incorporated in single-phase motors. All single-phase pumpsets requires a adequate starter / motor protection control panel.

Applications :

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

Salient Features :

  • 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)

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


Power 0.37 kW – 2.2 kW (0.5HP-3 HP)
Frequency / Speed 50 Hz / 2880 RPM
Version Single phase 200-240V, 50Hz, A.C Supply, Permanent split capacitor (CSR) incorporated with thermal cutout relay (motor Protector). Three phase, 380 -415V, 50Hz, A.C Supply
Maximum flow rate 17.8 IPs (64 M3 / Hr)
Maximum total head 52.5 metres
Maximum Operating Pressure 5.25 Bar
Degree of Protection IP 44/ IP 54
Class of insulation A & B
Direction of rotation Clockwise viewed from driving end
Type of duty S1 (continuous)
Sealing Mechanical Seal (Carbon & ceramic)
Maximum suction lift in metre 7
Maximum liquid temperature 33oC
Maximum ambient temperature 40oC
Nominal Pump size in inches(Suction & Delivery) 1 x 1, 1¼ x 1, 1½ x 1¼, 1½ x 1½, 2 x 1½, 2 x 2, 2½ x 2, 3 x 2½, & 3 x 3

Material of Construction

Part Name Material
Pump Casing Cast Iron
Motor Frame Cast Iron / Aluminium
Impeller Cast Iron / Stainless Steel
Shaft Stainless Steel
Sealing Mechanical Seal (Carbon & Ceramic)

Characteristics of Clear Cold Water

Maximum Liquid temperature 33 oC
Permissible amount of sand 25 gm/m3 (max.)
Chloride ion density 500 ppm (max.)
Allowable solids\ 3000 ppm (max.)
Specific gravity 1
Hardness (Drinking water) 300
Viscosity 1.75 x 106 m2/sec
Turbidity 50 ppm silica scale
PH value 6.5 to 8.5