Servomotor ip64 or ip65 ?

[Kataeb]

Kindly, we are using ip65 servomotors on diaper and tissue machines.
But we are considering the ip64 servomotors for new projects.
Has anyone had some concerns about these lower protection motors?

1FK7042-2AF71-1QG0 , Siemens , SIMOTICS S SIMOTICS S-1FK7 synchronous motor 1FK7-CT PN=0.82k UDC=600V M0=3Nm (100K); NN=3000rpm; naturally cooled design MB 5 (IM V1, IM V3) Flange 1 Power connector rotatable Absolute encoder single-turn 20-bit with Drive-CLiQ interface (encoder AS20DQI) Smooth shaft, tolerance N without holding brake, "" degree of protection IP64 ""

1FK7042-2AF71-1BG2 , Siemens , SIMOTICS S SIMOTICS S-1FK7 Synchronous motor 1FK7-CT PN=0.82k UDC=600V M0=3Nm (100K); NN=3000rpm; naturally cooled design MB 5 (IM V1, IM V3) Flange 1 Power connector rotatable Absolute encoder single-turn 24-bit with Drive-CLiQ interface (encoder AS24DQI) Smooth shaft, tolerance N without holding brake, "" degree of protection IP65 DE Flange, IP67""

https://mall.industry.siemens.com/mall/en/WW/Catalog/Products/10028743

 

[LadderLogic]

If you do not use water jets to wash your equipment, only splashing, you should be OK.

4 Splashing of water Water splashing against the enclosure from any direction shall have no harmful effect, utilizing either:
a) an oscillating fixture, or b) A spray nozzle with no shield. Test a) is conducted for 10 minutes. b) is conducted (without shield) for 5 minutes minimum.

Oscillating tube: Test duration: 10 minutes, or spray nozzle (same as IPX3 spray nozzle with the shield removed)

5 Water jets Water projected by a nozzle (6.3 mm (0.25 in)) against enclosure from any direction shall have no harmful effects. Test duration: 1 minute per square meter for at least 3 minutes
Water volume: 12.5 litres per minute Pressure: 30 kPa (4.4 psi) at distance of 3 meters (9.8 ft)