Company recently took over an account, has York Screw YS series R-22.Unit is 5 yrs old, maintenance supervisor told me problem started 3 yrs ago.
Problem:
Unit would not start due to "low oil in separator"
(holds 10 Galllons York "C") added 5 gallons to start unit.
Evaporator site glass foaming and color yellow, looks like completely full of oil.Checked check valve in discharge it holds.
Oil cooler is plate exchanger, liquid refrigerant from bottom of conderser 1/2 line feeds to top of cooler. 3/8 line out to bottom of evaporator.
Oil temp entering 145f,
3/8 line out is 130f,
HP 225
SP 71
No one at the site knows what other company did to this machine,said they would get it started. Every two weeks return to re-start.
I suggested to completley open up system, drain evap of all oil,check to see if oil cooler is defective.change all strainers and filters.
With no records of what was done I told my boss want to start from the beginning and check everything on machine.
Just want to hear if anyone has had a similiar problem.