As I said earlier I'm not in the trade, and the engineer has now refunded the majority of the money. I was attempting to check if what he had told me was correct. I also wanted to see if the pressure had changed from when he said the compressor was working, to when he said it had failed, but this isn't an issue any more.

For the record, although I have never worked on a refrigeration system I do work on high pressure hydraulics up to 6,000PSI, pneumatic systems of 90PSI and vacuum lifting equipment. I also work on HV equipment up to 11KV, right down to changing lamps and everything in between, including gas furnaces and burner systems. I was trained on these by Stordy but I'm not korgi registered either.

I do understand that you have to be careful telling people how to test systems in case something goes wrong though, especially where people now look for the slightest excuse to sue someone; and if people are asking basic questions should they really be messing in the first place.

Well it's all sorted out now anyway - the freezer is scrap and I won't be taking anything apart. I just want to thank you to all of those who helped me with this and my previous post, especially Taz for his offer to have a look at it.

Thread closed.