Following on from Part 1
This morning the F9 filters from Jasun Filtration arrived (part number UPC911212).
They’re folded paper filters in a plastic frame (there is a galvanised frame option, but plastic is cheaper and less likely to scratch the paint of the MC760).
The front panel (clamped on with two screws, one either side) has a large recess that fits over the body of the MC760:
As expected the Jasun filter fits nicely inside the front panel, on top of the G4 filter supplied with the MC760:
Because the filters are 25mm thick the MC760 doesn’t locate as deeply into the front panel as before:
I think doing this has introduced a few potential leaks, as the front panel no longer overlaps the MC760 as much, so I will probably seal the Jasun filter to the body of the MC760 with duct tape before use.
The only visible difference is the slight additional depth and the G4 filter bulging out a little more.
In use the difference in air flow is detectible with a hand held and the G4 filter is prevented from being sucked into the body of the fan, as happens without the F9 filter fitted.
This is down to the F9 filter behind it leaving nowhere to go rather than the difference in pressure 🙂
Having sealed the F9 filter to the MC760 with duct tape I’ve now used the filter for the first time and it seems to work nicely.
I’ve left it running for now (I think I’ll need to figure out a way of leaving it on for a couple of hours without needing to remember to turn it off again 🙂 )