Cleaning the Cascade

Hi friends, I was reading that the jets holes could be blocked with a long term use. How often do i need to clean ?
The last 3 months the temps raised a bit, without difference in room temp. Maybe dust in radiator ?...
Regards

I think the jet holes are wide enough to be rinsed out, maybe pipe cleaners?

Cathar would know. Ask him

Use a sewing pin. They should just fit down the tubes. A pipe-cleaner is about 5 times too fat.

As a suggestion you may like to try grabbing a micro-irrigation in-line filter if your cooling loop is not sealed. They typically cost about $3US or so, or you can try for a marine/boat water-system in-line filter, which will cost about $8US.