I have given up on upgrading my existing dust extractor, I will sell it and upgrade to a new dusty.
I can not decide if I should go for a Donald Torit UMA 250 or a Felder RL250.
They are both 5.5kw, UMA 250 has filter area of 244 sqft, Felder has filter area of 538 sqft.
For a UMA250, there is no need for a compressor, it has its own auto shaker motor to shake off the dust when switched off, has its own explosion relief panel (no need to hook up sprinkler), can place outside the shed in the weather, placing the extractor outside is my ultimate goal and its probably the best practice... my neighbour wont mind as I am in a semi rural area, I like the auto shaker and no need to hook up sprinkler.
Here is the fan curve of the UMA 250, G8 fan is 5.5kw.
Unimaster Fan.jpg
For a Felder RL250, it needs to hookup to a compressor (not a big deal I've got a 7.5kw hydrovane compressor but then I will need a dryer which is another cost), the Felder is designed to be used in door - occupy valuable shop space, my workshop is only 600 sqft.
The price for a RL250 here is $16k USD after tax. and a UMA 250 is $14k USD.
What does my fellow SMcreekers recommend?