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(A)    PUMPS

  • Proper installation of the pump system, including shaft alignment, coupling of motor and pump is a must. Drive transmission between pumps and motors is very important. Loose belts can cause energy loss up to 15 per cent to 20 per cent.
  • Use efficient transmission system. Maintain right tension and alignment of transmission belts.
  • Use of modern synthetic flat belts in place of conventional V belts can save five per cent to 10 per cent of energy.
  • Properly organised maintenance is very important. Efficiency of worn out pumps can drop    by 10 per cent to 15 per cent, unless maintained properly.
  • Use low friction rigid PVC pipes and foot valves.
  • Avoid use of unnecessary bends and throttle valves.
  • Use bends in place of elbows.
  • The suction depth of six meters is recommended as optimum for centrifugal pumps. The delivery line should be kept at the minimum required height in keeping with requirements.
  • Periodically check pump system and carry out corrective measures such as lubrication, alignment, tuning of engines and replacement of worn-out parts.
  • Over irrigation can harm the crops and waste vital water resource. Irrigate according to established norms for different crop.
  • Use drip irrigation for specific crops like vegetable, fruits, tobacco, etc. Drip systems can conserve up to 80 per cent water and reduce pumping energy requirement.


  • Install multi speed motor.
  • Optimise operating voltage level of motor for lightly loaded motors
  • Provide interlock for electric motor to avoid idle running.
  • Replace motor generating sets with thyristor drives.
  • Avoid frequent rewinding of motors. Greater the number of rewind, lesser the efficiency.
  • Carry out preventive maintenance and condition monitoring schedule regularly.