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Thread: Pressure Test
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01-03-2007, 09:55 PM #1
Pressure Test
I am just about to start my own company and have only really worked with R407c. Does any one have info on R410, i need to know what sort of running pressures and what pressure is used to test the system with
Thanks
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01-03-2007, 10:40 PM #2
Re: Pressure Test
Do you have a safe handling certificate and if so your handbook should give you the legal required test pressures?
Other than that I would suggest downloading some material from websites such as Daikin or Mitsubishi to gather more information.Brian - Newton Abbot, Devon, UK
Retired March 2015
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02-03-2007, 01:54 AM #3
Re: Pressure Test
Try useing a comparitor.
Or use the charts on coolpack
http://www.et.web.mek.dtu.dk/Coolpack/UK/download.html
taz
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06-03-2007, 12:03 AM #4
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06-03-2007, 09:46 AM #5
Re: Pressure Test
.
There is a pressure testing procedure laid down in a European Standard, EN 378. - Refrigeration Safety.
It's in 4 parts and for pressure testing specifically, you need to read Part 2, though I recommend being familiar with it all.
.
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06-03-2007, 09:05 PM #6
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06-03-2007, 09:30 PM #7
Re: Pressure Test
isnt it 1.1 times operating pressure for leak testing?
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06-03-2007, 10:27 PM #8
Re: Pressure Test
Sorry i got confused about the R410a pressures:-
Correct figures are
STRENGTH TEST - - 43 BAR for 15 seconds
LEAKAGE TEST - - 33 BAR for 24 hours
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06-03-2007, 10:55 PM #9
Re: Pressure Test
If you refer to Toshiba, as an example, you will find their requirements a useful schedule to follow:-
psi bar Period
50 3.45 5 mins
200 13.79 5 mins
450 31.00 5 mins
600 41.36 1 hour
500 34.47 24 hours
Do be aware that some manufacturers are not so confident of their isolation valves and require you to withdraw the refrigerant charge before strength/pressure testing. Read the instructions first.Brian - Newton Abbot, Devon, UK
Retired March 2015