The proper way to check and recharge the A/C system…
There is a proper way to recharge the A/C system that most do not know about.
First and foremost if you have to recharge a system then there must be a
problem. A leak is the most likely reason. Other things concern me about someone
coming to your house to "recharge" your A/C system where do they fit the
recovery system? That machine is rather large and costly to be hauling around in
a truck or van.
So here are the steps that should be followed in servicing your A/C system.
1. check the pressure in the system
2. If the pressure is low recover the refrigerant and vacuum the system down to
-30 lbs.
3. Put dye in the system and start the vech. Bring to proper pressure. (There is
a table that takes in account of air temp and what the pressure should be) if
you over pressurize then system damage could occur.
4. Look for leaks with a UV light and special glasses.
5. Check the cabin air outlet and the cabin air filter.
The air in the center duct should be at 38°F when properly serviced. The
operation of the blend door and the expansion valve should be checked at this
point.
6. There are some things I do that I take for a given that I just do not think
about while I service the system. Like watching the operation of the compressor
and listening to the car. Things I can not explain to the average person.
7. Do not just add to the A/C system even with the R134 refrigerant damage to
our environment can occur. Repair your system properly and it should serve you
well for some time to come.
There is more to just adding to your system and more problems can occur if you
do not take you're A/C to someone who is qualified to service your system. Money
is tight all around you're A/C system should be tight as well. Evaporators
spring leaks and front seals in compressors go bad. But most of the time these
happen by adding too much pressure to the system. More than 200lbs of pressure
is just too high for the system to hold! I had many come in lately at 250 or
even higher. The compressor can not do its job and will make noise or even lock
up!! Some repairs can cost you money not save you money. This is one of those
jobs.
So if you do not bring it to my shop please bring it to a shop that will back up
the repair work!
Thank You for reading this pass it on to your friends.
Information is the Key to any success or failure.
Knowledge and know how is how you turn information into the success you are
looking for.
Ken Boyer
314-799-6464