Air Conditioning Compressor siezures. B280E (R12) (Sanden SD709 compressor)

pettaw · Jul 18th, 2005, 23:24

Sorry if this is too little too late but I bet when you seized you first compressor debris got scattered throughout the system which has basically clogged it up, and now oil isn't migrating through properly, seizing compressor after compressor. For instance did you pull your orifice tube out and check the inlet screen for debris?

If the crankcase for the compressor holds about 200 mls of oil you should be adding 200mls to the compressor and about 100 mls into the accumulator for the rest of the system.

Peter, those 'magic in a can' solutions with dye, oil, powerboost, sealer, the kitchen sink etc are what many people call 'death kits' The oil, and dye are great, but the powerboost is snake oil and the leak sealer will stop up everything apart from the leaks it was designed to stop. Not an expert myself, but according to those that know, once leak sealer has been introduced to the system can very easily bung up the entire system meaning everything has to be replaced.

I could be wrong, but I have yet to see a all in one product that just contained an oil charge, dye and R134a.

Jul 18th, 2005, 23:24	#11
pettaw Forum Support Team Last Online: May 28th, 2024 10:43 Join Date: Jan 1970 Location: Glasgow, London	RE: Air Conditioning Compressor siezures. B280E (R12) (Sanden SD709 compressor) Sorry if this is too little too late but I bet when you seized you first compressor debris got scattered throughout the system which has basically clogged it up, and now oil isn't migrating through properly, seizing compressor after compressor. For instance did you pull your orifice tube out and check the inlet screen for debris? If the crankcase for the compressor holds about 200 mls of oil you should be adding 200mls to the compressor and about 100 mls into the accumulator for the rest of the system. Peter, those 'magic in a can' solutions with dye, oil, powerboost, sealer, the kitchen sink etc are what many people call 'death kits' The oil, and dye are great, but the powerboost is snake oil and the leak sealer will stop up everything apart from the leaks it was designed to stop. Not an expert myself, but according to those that know, once leak sealer has been introduced to the system can very easily bung up the entire system meaning everything has to be replaced. I could be wrong, but I have yet to see a all in one product that just contained an oil charge, dye and R134a.

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