Reading airconditioning gauges
Discussion
I posted this picture in a recent aircon thread but didn't really understand the reply I got.
Its a picture of my aircon gauges that I used to re gas our van, I understand the two outer scales, one is PSI and the other is BAR sor metric and imperial scales of pressure. But there are 4 inner scales and each relates to a different type of refrigerant gas. The reply I got was they are just to compensate for how hot or sold the day is when you are doing the re-gas.
I understand that the aircon pressure fluctuates with differences in temperature but you can't adjust the gauges in any way to set them for the current temp so what relevance are the inner scales when pressurising it up. Hope someone knows as its interesting to find out.
PS it was 20 deg outside in that picture when I did it 12 months ago and its still working perfectly today so I must have done something right (re-gas was needed as I changed the condenser).
PPS I'm not an aircon engineer just someone who likes to have a go at things.
Its a picture of my aircon gauges that I used to re gas our van, I understand the two outer scales, one is PSI and the other is BAR sor metric and imperial scales of pressure. But there are 4 inner scales and each relates to a different type of refrigerant gas. The reply I got was they are just to compensate for how hot or sold the day is when you are doing the re-gas.
I understand that the aircon pressure fluctuates with differences in temperature but you can't adjust the gauges in any way to set them for the current temp so what relevance are the inner scales when pressurising it up. Hope someone knows as its interesting to find out.
PS it was 20 deg outside in that picture when I did it 12 months ago and its still working perfectly today so I must have done something right (re-gas was needed as I changed the condenser).
PPS I'm not an aircon engineer just someone who likes to have a go at things.
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