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i will send you the out come friday

jp i really thank you i appriciate your expertise and feel confident that this is the issue good night

so tell me undercharged system would cause frost pattern only on the top of evap right

that is probably why only the top of evap has a frost pattern

you are right!!!! jp is pretty smart good guy to have on our side

is that why just the top of the evaporator is frosting?

I am in reading pa can i call you?

where are you from if you dont mind me asking

the simplest thing that flew from my head i overlook how long you doing refrigeration

you are pretty knowledgable i thank you

your right it is a walk in freezer and the condenser came with it but it was still field installed manufacturer could not know length of piping or size because of length. in this cas after reading...

so are you saying that the label on condenser unit as far as charge is wrong

after charging i stayed there and checked operation sight glass flashed i put alittle more till it cleared and then waited till there was no more flashing. during the day it brings box temp to 0...

you lost me i weighed in charge and cleared sight glass how do you charge for head master operation i did not know there was a differance for that tell me how

new txv and now i think the system may be oil bound suction line is frosting but not all the way back to compressor

thought it was non condensables before 300 microns. 404a refrigerant head pressure 200 suction starts at 50 psi and falles until low pressure cut out.

also forgot to mention when i took drier off for the first time the bottom line was full of oil could the system be oil bound

and yes 300 microns

yes condenser is on the roof of building and it does have a head master i thought that it was non condensables due to prior refrigeration company charging without fixing leak was on the low side...

Hi out there, I have a walk in freezer prior company kept charging system 2 times a year without finding leak. I got called out pumped system up with inhert gas found leak fixed it and installed new...