The P-Series user documentation refers to an AC Mains Filter (noise filter) as part number RFY-4010M. This particular filter may be difficult to source and is not an accessory that we intend on offering. Instead, here are some good alternatives:
Parker part number = NFI01/01 which is the TE Connectivity / Corcom model 12FC10 Single phase 120/240VAC 12 amps
Parker part number = NFI01/02 which is the TE Connectivity / Corcom model 16FCD10 3phase phase 240/480VAC 16 amps
The NFI models are available from Parker but not stocked. The Corcom models can be sourced from electronic supply houses such as Digikey, Mouser, or Newark.
glh 11/2015