Fan Belt Problems

[phorner]

I am by no means an expert, probably not even a good novice, but I think that any air conditioning system that can drop the temperature by 28 degrees is doing very well.

Seems to me that I once heard a technician say that about a 20 degree temperature differential is about all you can expect.

For what its worth that's my 2 cents (and probably worth each penny)...

[BrianE]

Jim,
Also speaking from a proven position of non-expertise, I would agree with Paul that your system seems to be doing a good job. Would also think that changing refrigerants often could possibly cause problems. When Prevost makes the change from R12 to 134a they recommend changing all of the hoses due to incompatibility of the mineral oil lubricant (used in R12 systems) with Ester oil (used in 134a systems). The AC techs that I have spoken to however didn't think this was much of a problem as long as the system is totally evacuated and flushed when changing over.