As Hellosailor and others have mentioned you do not change gases such as R12/22 to R134A. The lubricants and other factors like seals
, etc. are different inside the systems due to the chemical nature of the various gases. Additionally you need a/c gauges and hoses with fittings appropriate to your system. The service
fittings on older units are quite different from the newer 134A systems. Read the manual for your system carefully as adding gas to your system is a technical process requiring putting in exactly the correct amount and not too little or too much. And the little cans of refrigerant are not cheap
, in Trinidad a single
small cost me US$50 from a marine
- - And as stated you need to have the unit tested to see if the repair is valid or the unit still leaks
. The pressures inside can be such as to dislodge your repair especially when radical temperature changes occur from room temperature to freezing.
- - The are service
shops in Fajardo, P.R. who can deal with your system. There is also two marine
supply stores in the Villa Marina area that can advise you as to who and where you can find a repair shop. If you are further south then Marina del Rey would have vendors to do the job.
- - Using an ice pick to remove frost is rather dangerous and expensive if your aim is not good. I defrost my units in less than a minute using a garden hose and spray nozzle. I spray the cold plate/evaporate bin with the water
and frost and ice disappear quite rapidly. Since I built a drain into the bottom of my boxes, the water
drains away quickly. Otherwise you would have to scoop and sponge out the water. Which is not bad as you get to clean the inside walls of the box at the same time.