rusbet
Veteran Member
- Joined
- Oct 1, 2010
- Messages
- 63
In the last week our air conditioner makes a "clunk" noise when cycling off.* Would there be any thoughts on what it could be?
*That's Cool Jim *Jim Spence wrote:
I have only seen the "clunk on cycle off problem" twice. Both times it was an all in one unit (compressor, evaporator, condenser and blower in one package.) The first the compressor was mounted less that 1/8 inch from the blower. I loosened the mounting bolts and rotated the unit away from the blower and re-tightened them. The second time I saw it was another unit that had been removed and reinstalled, apparently when they put it back in they bent the mount for the condenser coils, again, almost touching the compressor. I fixed the mount and they had no more problems with the unit. My experience with high head pressure is that a lack of cooling or the unit shutting down from the thermal over load would be noticed first.
*Well...417a is a blend...Where R-134a is not, and was developed to simulate R-12 operation...417a is forulated as a Drop-In replacement for R-22 in existing systems.Jim Spence wrote:
I came up in automotive A/C so I'm sure you have seen more marine A/C units than I have. One of the reasons that I posted what I did is because almost any one can do the fix that I talked about. Few of us have the meters, gauge sets, vacuum pumps and freon to do more extensive repairs. I always carry all my A/C repair stuff including a 30 pounder of R22 on the boat.
Your article is really interesting and well put together. It looks like they are doing the same thing with R417 and R-22 that they did with R12 and R134. ie It's not as efficient but it's better for the atmosphere. And of course later we found that wasn't exactly true either. Thanks for the info.