View Full Version : Pressure Test
Langdellt
01-03-2007, 09:55 PM
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
Brian_UK
01-03-2007, 10:40 PM
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.
taz24
02-03-2007, 01:54 AM
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
Try useing a comparitor.
Or use the charts on coolpack
http://www.et.web.mek.dtu.dk/Coolpack/UK/download.html
taz
Rotax100uk
06-03-2007, 12:03 AM
what pressure is used to test the system with
I test a R410a system to 300psi/20bar for 24 hours with OFN
Argus
06-03-2007, 09:46 AM
.
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.
.
frank
06-03-2007, 09:05 PM
I test a R410a system to 300psi/20bar for 24 hours with OFN
300psig is not even sufficient for the HP control setting on an R22 system :eek:
Daikin, and others, recommend that R410a systems are pressure tested to 40Barg (600psig)
davej
06-03-2007, 09:30 PM
isnt it 1.1 times operating pressure for leak testing?
Rotax100uk
06-03-2007, 10:27 PM
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
Brian_UK
06-03-2007, 10:55 PM
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.
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