Ok gents here is my most recent challenge, this is a 12 door freezer case, not geting cold enough temp is 20 degrees empty, 3 upper (exterior top of box) 5W fan motors are out , 2 motors in the bottom of the case are bad (12W ECM's), condensing coil 80% blocked shut down unit, cleaned cond. coil, replaced 2 5W motors I could, and will replace the others on Monday, brought the unit back up case temp at start up was 60 in three hours I was down to 18, I left at that point and recieved word it is still not cold enough ( I had to TRY to get the customer backup as much as possible.)
Sight glass is full.
Oil in sump is at the full line but not calm
Super heat taken at condenser end bell service valve is 41
Subcooling is taken at liquid lin end bell service valve is 11
My course of action at this point is to finish fixing what I know to be wrong, get the fans all functioning and then go from there, by that point I should have some experienced help on site.
What is the purpose of the upper fans as described above?
Superheat should be much lower single digits. correct?
I am totally new to this type of equipment and am doing the best I can with what I know, any help would be greatly appreciated.
Any body got a tech # for Bohn or Tyler?