same as R-22, depends what your trying to read.
same as R-22, depends what your trying to read.
What you need to do first is read the pressure gauges and see if the gauges read 0 psi
Refrigeration gauges can fluctuate if there is an issue with the refrigerant, such as low levels or air in the system. Other potential reasons could be a faulty gauge, a problem with the expansion valve, or issues with the compressor. It's important to troubleshoot and address the root cause to prevent further damage to the system.
Usually around 220.
You need a vacuum pump, gauges and freon. Take it to someone who does this work. A refrigeration guy can do it.
407C is a refrigerant that is often used as a replacement for R22, particularly in systems designed for R22. While it is compatible in terms of functioning within the same system, it is important to note that 407C operates at slightly different pressures and requires a different oil type (POE oil instead of mineral oil). Therefore, a system designed for R22 may need some modifications to ensure optimal performance with 407C. Always consult a professional before making any changes to refrigerant types in HVAC systems.
No
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To read gauges,you must know which is low side/high side,if you know that, then depending on which freon you are using,you read the pressures matching the temp,for example,looking at the low side gauge(blue gauge) look at R-22 freon,you will see that 40 degrees,will equal to 70 psi
When one of your gauges shows something abnormal, your "check gauges" light will come one. Chances are you're low on motor oil. When you corner, the oil will slosh away from the pickup, causing your oil pressure gauge to read zero for a second. This in turn causes your check gauges light to come on, but by the time you look at your gauges, the oil has settled in the pan is your oil pressure is reading normal again. When you see the check gauges light and the gauges are reading fine, check your oil.
The 'g' added on to bar means 'gauge', as opposed to bara, meaning 'absolute'. The 'zero' of a normal gauge is normally set at atmospheric pressure (things like tire pressure gauges, water gauges etc.) These gauges will read as "10 bar" but really mean that the absolute pressure is 10 bar + atmospheric pressure (~1.01325 bar). Some gauges however are absolute gauges. These might include weather gauges, or gauges on closed processes. bara = barg + atmospheric pressure
You can purchase refrigeration parts online at Amazon.com, Buy.com or Ebay.com. It would be beneficial online, therefore you can compare prices, read reviews and return your product with no hassle.