High Efficiency Evaporator Fan Motors

Variable speed ecm condenser fan motors are used in condensers for the high efficient models so that the fan speed for the condenser can be modulated according to the load of the system.

High efficiency evaporator fan motors.

These fans run twenty four hours a day. â a new motor technology a type of permanent magnet synchronous ac motor that can directly use grid supplied ac current without the need to rectify to dc has recently been commercialized. The ecm variable speed fan motors are used in condensers that have a modulating compressor. Typically for commercial refrigeration evaporator fan motor applications ec motors are 66 efficient and psc motors are usually about 29 efficient.

New style ec motors are over 60 more efficient than old style motors at high speed in low speed mode they are over 90 more efficient. Direct drive motors produce less noise and vibration than belt drive motors. Higher efficiency evaporator fan motors reduce energy consumption by requiring less electrical power to generate the same motor shaft output power nci pnnl 2011. Direct drive motors include condenser fan motors pedestal fan motors room air conditioner motors and unit heater motors.

The end result after this efficiency upgrade is that the new evaporator fans save over 60 on electricity half the time over 90 during compressor off cycles. Fasco d7908 5 6 inch condenser fan motor 1 3 hp 208 230 volts 1075 rpm 1 speed 2 6 amps totally enclosed reversible rotation ball bearing 4 2 out of 5 stars 76 65 95 65.