OPTION CHECKLIST NO. 2: FANS & BLOWERS
• Use smooth, well-rounded air inlet cones for fan air intake.
• Avoid poor flow distribution at the fan inlet.
• Minimize fan inlet & outlet obstructions.
• Clean screens, filters and fan blades regularly.
• Minimize fan speed.
• Use low slip or flat belts for power transmission.
• Check belt tension regularly.
• Eliminate variable pitch pulleys.
• Use variable speed drives for large variable fan loads.
• Use energy-efficient motors for continuous or near continuous operation.
• Eliminate leaks in duct works.
• Minimize bends in duct works.
• Turn fans & blowers off when not needed.
• Reduce the fan speed by pulley dia modifications incase of oversized motors.
• Adopt inlet guide vanes in place of discharge damper control.
• Change metallic / Glass reinforced plastic (GRP) impeller by more energy efficient hollow FRP impeller with aerofoil design.
• Try to operate the fan near its best operating point.
• Try to adopt Option of energy efficient flat belts, or, cogged raw edged V belts, in place of conventional V belt systems, for reducing transmission losses.
• Minimizing system resistance and pressure drops by improvements in duct system.
• Ensure proper alignment between drive & driven system.
• Ensure proper power supply quality to the motor drive.
• Regularly check for vibration trend to predict any incipient failures like bearing damage, misalignments, unbalance, foundation looseness etc.
• Use smooth, well-rounded air inlet cones for fan air intake.
• Avoid poor flow distribution at the fan inlet.
• Minimize fan inlet & outlet obstructions.
• Clean screens, filters and fan blades regularly.
• Minimize fan speed.
• Use low slip or flat belts for power transmission.
• Check belt tension regularly.
• Eliminate variable pitch pulleys.
• Use variable speed drives for large variable fan loads.
• Use energy-efficient motors for continuous or near continuous operation.
• Eliminate leaks in duct works.
• Minimize bends in duct works.
• Turn fans & blowers off when not needed.
• Reduce the fan speed by pulley dia modifications incase of oversized motors.
• Adopt inlet guide vanes in place of discharge damper control.
• Change metallic / Glass reinforced plastic (GRP) impeller by more energy efficient hollow FRP impeller with aerofoil design.
• Try to operate the fan near its best operating point.
• Try to adopt Option of energy efficient flat belts, or, cogged raw edged V belts, in place of conventional V belt systems, for reducing transmission losses.
• Minimizing system resistance and pressure drops by improvements in duct system.
• Ensure proper alignment between drive & driven system.
• Ensure proper power supply quality to the motor drive.
• Regularly check for vibration trend to predict any incipient failures like bearing damage, misalignments, unbalance, foundation looseness etc.
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