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khongminhhason
24-11-2012, 03:06 PM
hello everyone!
i have a industrial REFRIGERATION system, it use R407c, condenser was cooled by water. AND trouble is my condenser was leaked, water into the system
how to take it out thoroughly???
thanks you in advance

sedgy
24-11-2012, 09:35 PM
hi k,
you need a fan assisted gas heater to blow on to the system and onto the ofn bottles which you need to blow through the system once you have found the leak , if there is space enough to split the
fridge system then do so especially the compressor, drain the oil( and water )
new dryes, vac out, gas up , best of luck= sedgy

The Viking
24-11-2012, 09:50 PM
Any and all of the oil in the system is now acidic, drain as much of it as possible.

Flush the system with as much OFN as you can get your hands on.

Several deep vacuums, each broken by OFN.

New driers, make sure there are valves before and after the drier(s).

Triple vacc and recommission.

Run for a day or so then change the drier. Repeat this step as necessary.
After a week or so replace the oil.

:cool:

mad fridgie
24-11-2012, 11:25 PM
I going to get my arse kicked here.

Isolate the compressor, flush with a a cleaning agent.
Now the system, fit valves at low points!
Flush the system with very hot water (80C) plus "Yes hot water"
When clean of shyte, drain hot water, and blow through the system with hot air. ( I actually draw through a system with a vaccum cleaner (a air heater on the inlet)).
This will remove all the crude, the heat will remove most free water.
Now, purge OFN warm if possible.
Vacuum the system, own to 200 micron or below.
Keep heat on the system if possible.
This is a quicker and better, than trying to clean a system, with OFN only.

mikeref
24-11-2012, 11:36 PM
Demineralised water "Mad"??

mad fridgie
25-11-2012, 12:07 AM
Demineralised water "Mad"??

In a perfect world, but just clean filtered tap water is OK,

The water that is already in the system is likely to have more crap in it.

Hot water will loosen any oil (which will be contaminated) that within the system, hot water will flow more easily out of the system (so already less free water), when air is applied.
Because the internals are hot the any free water will evaporate very easily.
Your filters (which should always be fitted after this type of fault) will pick up any deposited TDS (total dissolved solids) which will be minimal.

khongminhhason
25-11-2012, 10:40 AM
"all of the oil in the system is now acidic" why is that?
thanks for your help!

Brian_UK
26-11-2012, 12:21 AM
"all of the oil in the system is now acidic" why is that?
thanks for your help!

Because of the water.

monkey spanners
26-11-2012, 12:33 AM
"all of the oil in the system is now acidic" why is that?
thanks for your help!

Water can break down the chemicals that are the ingreadients of the oil, kind of undoes the manufactuing process.

Also the water will have likely brought in suspended dirt and grit and left it behind.

Depending on the system and how much water got in, it may be better (cheaper in long term/more reliable) to scrap the system and replace with new.