I bought out a small home studio that came with a Bluebird 440 de-airing pugmill. I'm planning to sell the pugmill since I don't really need it (but would be great to have) and can pretty much offset the price of what I paid for everything by selling it. I want to make sure it's working properly so thought I'd run the clay I have through it, since I've been working on reclaiming a bunch anyways. Have already opened it up and cleaned it, so it's good to go as far as that's concerned. Thing is I've never used one, and of course I didn't get the manual with it. Can't seem to find one online either. I noticed a previous post about this on this forum, and there was some great info on cleaning it up and some maintenance, but can't find anything on actually using it. I've fired it up and motor on pump/compressor and pugmill work, but had a couple of questions before I actually throw some clay in there.
As far as the regulator goes, is it just supposed to sit on top of it's space on the barrel, or is the plastic plate supposed to be secured somehow? When I turned it on the regulator didn't register anything. Would it only do this with clay in the barre, thus sealing the barrel and creating a seal for the vacuum? I was thinking maybe once a seal is created and the vacuum action kicks in it would seal the plate to the barrel, and this is how the regulator measures the negative pressure, but that's just me speculating.
And the valve that the pump is attached to, should this be closed (can't see the hole) or open? I know sounds pretty basic but I'm not real sure exactly how this confounded contraption functions. And does something go on the top side of this valve? The hose to the compressor is on the bottom side, but wanted to make sure I'm not missing something.
Lastly, the little lever attached to the spring in the chamber under where the regulator sits: what is the function of this? What position should it be in during use? When I turned on the pugmill I could see that the auger was hitting it as it rotated and flicking. Is it supposed to do this, or is some messed up/misaligned?
Any other info advice you think is necessary would be greatly appreciated. Thank in advance!