dpmiller

just for confirmation yes, the only thing to see the Megger was the Compressor. another angle- before getting a fridge man to pull a vacuum to dry off the system might it be worth heating the compressor housing (hairdryer or heatgun) and retry startup with it hot?

I've got to ask the question. Has anyone seen a commercial kitchen with a downdraft extractor?

Wonder if the compressor has now failed sufficiently that the inverter is chosing not to drive it...

And what does your magic book say 08 is?

OK so standard resistance checks cold gave 30M plus for each of the mains-connected portions of the unit. As nothing obvious appeared we fired it up and it went through initialisation, started the fan, stepped the expansion valves and then there were a couple of faint buzzes from the inverter. No shudder, hum, or anything else from the compressor. After this, the multimeter showed 25k from the compressor windings to chassis. I threw the megger on it at this point and the needle was off the scale. Very leaky.

Have you any idea what portion of your £80k is actually for laying blocks? How any sqm is the house? What is the roof and FF construction?

https://www.pandasecurity.com/en/homeusers/solutions/free-antivirus/

used AVG for quite a while and it went through a very slow and laggy phase. Currently (three or four years?) using Panda Free and can't fault it.

The only issue I can see is getting enough flow from the willis into the manifold, it's certainly something I had to work with. The heat source generally has it's own pump pushing into the manifold... The 'stat in the immersion has a fairly broad hysteresis. You'll probably have to go a fair bit higher than 25 to get it to stay on. Likewise your mixer may not be incredibly sensitive.

80k *labour only* to throw up a few thousand block? Yikes. Where did they get that from?

well that's OK then, pour away!

shouldn't be a cap with a hole as the 70mm bit will restrict and unbalance the flow. Yes, you can use the 70mm in your calcs but the numbers will be skewed by the restriction. You be better cutting a hole in the side of a length of 125mm and putting the AFM in through the hole, central to the tube.

is there an expansion foam round the perimeter?

yep, pretty sure there's an insert under the cap.

No reason for an inverter to leak as such, the compressor windings and any mains suppressor/filter are more likely culprits. Followed by solenoid valve coils, fan motors etc.. If you can't find anyone that'll have a go give me a shout and I'll see if I can get down.

go a couple of inches of poured screed over the chipboard.

That looks like the 200Hz peak is going to making a fairly obvious drone. What speed is the motor?

daisy-chained panels could be linked out just with a short M-F cable. Personally I'd be more worried about the resistance of all your extra cabling and connections if bringing all the DC lines to a single point.

strong enough for expanding anchors and shot firing?

yep, that's what i thought @pocster was talking about. But when he mentioned lighting too...

what's a radial ring?

or you could a. not break'em or b. buy some for pennies at the local factors...

I had our VentAxia draining into a bucket for some months, only getting the final drain sorted recently. A good few litres a week...

Our TF sits on a course of 7N Quinn lightweight thermal blocks.

pumps should be as near to silent... hold a screwdriver between your ear and the pump, you *might* detect a faint hum but more likely a slight hiss from the bearings and water flow.