Gantry brush washers how to clean brushes?

[washtecnic]

Hello,

I have a WASHTEC Gantry Brush washers, the brushes tips after some time start to get drak dirty, what product should I use to clean them?

What method you recommend me to clean them?

Turn them manually and spray what cleaning product on them?

wait some time and then rise them with pressurized water?

please tell me how you do it


Thanks

Mario