I happened to be doing a little machining today on some odds n'sods and noticed that despite my best efforts, the Camvac 286 wasn't quite producing as much suckage as it ought, which was mildly disconcerting to say the least….stuff was flowing, but not nearly with the same gusto as before.
Puzzled, I was….
I started to look at the joints between all the gates, 'T's and pipes etc and all seemed tight. All nicely bound with duct tape, with a pair of plastic ties on each to make them air tight Then I noticed a couple of gates weren't closing properly by around 3mm, allowing air to leak past….not much, but enough.
The gates in question opened horizontally, allowing a build up of grunge in the groove, so there was nothing for it but to remove the culprits , clean them out with a 2mm Allen key and re-assemble the system so that all the gates, including the two offending ones, now opened by pulling vertically downwards.
It's little things like this that make all the difference, so it's worth paying a bit of attention and getting all one's 'ducks in a row' when the system's installed.
Which I clearly didn't first time round.