Schrader valve on high/low pressure switch ports? American Standard/Trane 4A6H5036E1000AB

[Beshmo_Handes]

Title says it all - I want to replace a failed low pressure switch (Trane SWT03157) on this heat pump, but am not sure if the fittings have Schrader valves on them. Does anyone know? I also got a high side switch while I'm in there.

I can't find this information online anywhere, some systems supposedly have them, some require pulling vacuum.

 

[breplum]

You have to be a certified refrigeration technician to work on lines with refirgerant.

 

[Beshmo_Handes]

Thanks, didn't know that. How does one go about getting certified?

Also, is this a state/local code, or national?

 

[breplum]

It takes a lot of training and education. Plus equipment.
EPA national standard due to the damage older refrigerants cause to the ozone layer.
EPA national requirements (similar with automotive refrigerants).
https://www.epa.gov/section608/section-608-technician-certification-0