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Old 02-22-2020, 02:38 PM   #1
Mini-Skoolie
 
Join Date: Feb 2020
Location: Central Florida
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Year: 2007
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Chassis: FS-65
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Help Removing AC Unit?

Hello all! We’re attempting to remove the AC units that don’t work in the rear and front of the bus. In the rear unit a liquid started to spew out and appeared to bubble when we loosened the bolt in the image. No injuries just looking to move forward and remove the unit then move on to removing the system underneath the bus.
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Old 02-24-2020, 01:10 AM   #2
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I suspect that there is still refrigerant in the system, however even after recovery a little bit of popping and hissing is not unusual as residual refrigerant boils off. If a hiss does not stop after a second of loosening a fitting, evacuate and just the refrigerant leak out. Refrigerant can give you frostbite rather easily if it bursts out. The liquid is also very likely oil of which there should be a fair amount in the system, be ready to clean up a bit of a mess.
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Old 02-24-2020, 08:30 AM   #3
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When I unhooked my AC system all the lines were bone dry (this was after I had the refigerant pumped out at an auto shop).
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Old 02-24-2020, 09:01 AM   #4
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Year: 2002
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Do you KNOW for sure that the system was evacuated?!

Super sh!tty move to just vent it to atmosphere...

That said: the frostbite warning above was NOT strong enough!

Wear gloves AND EYE PROTECTION when working with refrigerant -- it WILL blind you on contact...

There will be a pair of valves to hook up a/c servicing gauges -- carefully open and depress one of the valves -- you'll know immediately if the system is still pressurized -- releasing the valve (like a tire valve) will stop the flow.

Have a mobile hvac person come remove the gas -- I'm sure FL has several where ever you are...
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Old 02-24-2020, 11:39 AM   #5
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Quote:
Originally Posted by banman View Post
Super sh!tty move to just vent it to atmosphere....

Have a mobile hvac person come remove the gas -- I'm sure FL has several where ever you are...
Ah I didn't think about there being mobile AC guys. I should stop giving advice at 4 in the morning so I can think things through better. Still the amount of refrigerant the world goes through a summer boggles the mind... I worked for a shop that stocked 300 lbs of R134a at the beginning of summer and had to buy 5 more 30lb cans before summer was through.
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Old 02-24-2020, 06:20 PM   #6
Mini-Skoolie
 
Join Date: Feb 2020
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Engine: Mercedes-Benz MBE 900
Truthseeker4449 thank you so much, we managed to get them out. We appreciate the advice.
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Old 02-24-2020, 06:22 PM   #7
Mini-Skoolie
 
Join Date: Feb 2020
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Engine: Mercedes-Benz MBE 900
Thanks banman, we appreciate the advice.
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