Rank: Advanced Member
Groups: Senior Expert
Joined: 10/9/2008(UTC)
Posts: 784
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Yes sir that would be it. A new drier always helps. I usually go with a bigger size and add more charge to make up for the size difference
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Rank: Advanced Member
Groups: Senior Expert
Joined: 9/1/2008(UTC)
Posts: 440
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Buy a "Long-Horn" drier. It comes with a schrader valve. Make sure to remove the valve core when installing or you will melt the seal. When cool to touch, replace core. Connect High Side to this fitting. Connect low side to access fitting. Evacuate and re-charge. If using "Hot-Shot". R-409A or MP-39, use 80% of the rated charge. :)
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Rank: Member
Groups: Registered
Joined: 10/8/2008(UTC)
Posts: 32
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Alright folks I get him to come by with a recovery machine and we did the deed and fixed the leak, now we need to complete the rest of the charge, I am not sure of how much is in the the system his recovery machine keep most the refrigerant in its condenser. we weighed about 3 oz in the tank.
now we are unsure what needs to be added. what will it hurt to over or under charge with a r12 system?
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Rank: Advanced Member
Groups: Senior Expert
Joined: 10/9/2008(UTC)
Posts: 784
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Now you need a vacuum pump and pull it down to 29in of vac or close to it
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Rank: Member
Groups: Registered
Joined: 10/8/2008(UTC)
Posts: 32
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right we put a good two stage pump on it for 35 min and pulled what looked like 30-32 in vac. It held for an hour on the gage with no movement I think that its leak free now! We put what freon we had in it and I have more coming tomorrow and its more than enough for what we had but I am not sure what we lost. What should I do? what I am getting isn't enough for a full charge. I had 8oz to start with and I know for a fact that at least 3oz went back in, and a lot from the coils in the reclaimer.
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Rank: Advanced Member
Groups: Senior Expert
Joined: 9/1/2008(UTC)
Posts: 440
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Fact : The proper way to determine vacuum is with a "Micron-Gauge". It also will help you to know if you have a leak, or moisture still in the system.
Evacuate to 500 microns. Stop pump. Observe. If the vacuum rises rapidly, you have a leak. If it rises slowly, you still have moisture. :)
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Rank: Member
Groups: Registered
Joined: 10/8/2008(UTC)
Posts: 32
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ok guys I went to town and got a "longhorn" drier and installed it vacuumed each side looking for leaks found none the installed the capillary tube, I vacuumed the whole system for 40 min saw the vacuum hold for 25 min then broke it with nitrogen, now I am in the process of charging the system and found that the hight side is running around 185 on the r-12 scale, the freezer is still cooling right now. I haven't put the full charge in yet though. What could be wrong? the low side is running is at 18 on the r-12 scale. I am using r-12 in the system.
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Rank: Advanced Member
Groups: Senior Expert
Joined: 9/1/2008(UTC)
Posts: 440
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? Did you evacuate after sweeping with "Nitrogen" :)
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Rank: Member
Groups: Registered
Joined: 10/8/2008(UTC)
Posts: 32
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lol, yes! sorry I didnt include that in the post, a lot to write down in a hurry.
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Rank: Advanced Member
Groups: Senior Expert
Joined: 10/9/2008(UTC)
Posts: 784
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The pressure will drop as it cools down on both sides
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