r407c chiller issue

[Lc_shi]

Hi sir
We need to make r407c chiller for our customer. The condenser and evaporator are both plate heat exchanger. Liquid drier and TEV are selected for 407c. I'm not sure if there any special concerns in production process comparing to r22 chiller production as follows:
1) leak test
2) vacuuming
3) charge
4) factory runing test

Is there any special tool for r407c process?
May be there's no difference,but I want to make sure before moving to volume production. Thanks in advance!

best regards
LC

[nike123]

Hi sir
We need to make r407c chiller for our customer. The condenser and evaporator are both plate heat exchanger. Liquid drier and TEV are selected for 407c. I'm not sure if there any special concerns in production process comparing to r22 chiller production as follows:
1) leak test
2) vacuuming
3) charge
4) factory runing test

Is there any special tool for r407c process?
May be there's no difference,but I want to make sure before moving to volume production. Thanks in advance!

best regards
LC

No special process except, great care wit oil (mutch more hygroscopic than mineral), and tools dedicated to R407 in order to not cross contaminate mineral and POA oil (vacuum pump with suitable oil, gauges, hoses).
I am just curios, did you making only one or more of one chiller?

[Josip]

Hi, nike123

I am just curios, did you making only one or more of one chiller?

May be there's no difference,but I want to make sure before moving to volume production. Thanks in advance!

best regards
LC

...in China they do not produce anything by one piece...

Best regards, Josip

[Lc_shi]

thanks.

we get the order of total 32 pieces this time. It's a small quantity comparing to our r22 chillers

regards
LC