Possible restriction or bad compressor
I dont want to be parts changer. I would like to get this the fist time I go back to this service call on monday.
Call from Philips 66 Gas Station. Reason for call: Walk in cooler warm. I will try to give you guys as much details as I can....
When I arrived the first thing i check was my temp inside the walk in cooler. Temp is 65. I got two evap and each one got txv on it. Now that I know what I got inside I went outside to see my condensor. Everything is working but my suction line is not cold and my discharge is warm. Put my gauges on and found my suction at 20 psi and discharge at 120 psi. Looked at my sight glass and found it with lot of bubbes. I got excited I thought I know it was low on refrigerant. Put some R22 and watch my sight glass until it got all clear....My discharge pressure was still at 120..... So know I think I got restriction somewhere on my discharge line.. Hmm maybe txv or filter drier or maybe head master.... Checked my amps.. Three phase.. Check each wire to the compressor. one is 12. two 11 three 5....Hmm What else can i check.. oh yes let me see that txvs.. Put all the refrigerant in my reciver and checked my txvs.. I found the screens on txv half black and some small particals in it... Used my nitrogen to clean them out.. I can see through the screen. I think they are okay...Closed everything up. Recover all the refrigerant and pressurized it with nitrogen. NO LEAK. Pulled vaccum to 400 microns. New filter and refrigerant.... Charged the unit again.. Same issue my discharge is at 120 psi... What else can I do when I go back.. Possible kinck somewhere?? Compresor is bad... Never had to change headmaster before. Could this be possibilty??