ActronAir Indoor Evaporator EC Plug Fan K3G560RB3175 560mm 3-Phase is an updated 560mm EC plug fan for large-capacity commercial ducted systems where the K3G560RB3175 motor model replaces earlier K3G560 variants with an improved motor drive configuration for greater reliability at high commercial operating hours. On Hercules PKV1400 and PKV2000 units, each fan in the array is addressed as position 1, 2, 3 or 4 via EC Control Software -- refer to document 9590-7005 for the correct addressing procedure after replacement. Isolate power at mains before replacement -- EC motors and variable drives retain dangerous residual voltages for up to 5 minutes after power isolation.