DAIKIN VAN HRV unit´s. Can the paper HEAT EXCHANGER be washed or cleaned some how?

[Pfigueiredo]

Hello,

I´m doing maintenance to a DAIKIN VAM1000FJ Heat recovery ventilation 10904unit.

The filters where not cleaned for a long time. The heat exchanger (HEAP element) is dirty.
It is made of paper.

Can I clean it some how? Is it washable? Can it be air compressor cleaned?
New units are prohibitedly priced.

Best Regards

Paulo Figueiredo

[install monkey]

we pressure wash em every year, check the filters are fitted on the lower section of heat exchanger