Refrigerant Circuit, General Precautions: Notes

WARNING: This page is about a different car, the 2018 Volkswagen Jetta, 2017 Volkswagen Jetta, 2016 Volkswagen Jetta, and 2015 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.

Follow The Instructions For The Workplace. They Should Be Displayed In The Workplace.

Ensure absolute cleanliness when working.
Wear work clothing, safety goggles and gloves when working with refrigerant and nitrogen.
Turn on the exhaust gas ventilation system
Only use the A/C Service Station to discharge refrigerant circuit, and then open the threaded connections and replace any faulty components.
Use caps to seal off any opened assemblies and hoses to prevent moisture and dirt from getting in.
Only use tools and materials designated for refrigerant R134a.
Be sure to close the container to prevent the refrigerant oil from absorbing moisture from the air.

-- Refrigerant Circuit, Flushing with Compressed Air and Nitrogen. Refer to REFRIGERANT CIRCUIT, CLEANING WITH COMPRESSED AIR AND NITROGEN .

-- Flushing refrigerant circuit with R134a refrigerant. Refer to REFRIGERANT CIRCUIT, FLUSHING WITH R134A REFRIGERANT .

On Vehicles With A/C Compressor Without Magnetic Clutch:

NOTE:

The engine may only be started when the refrigerant circuit is installed correctly. For example; if the refrigerant pipes are not connected to A/C compressor, when the engine is running the A/C compressor may heat up (via internal heat generation) so much that the A/C compressor will be damaged.

A/C Compressor Regulator Valve -N280- is not activated when the refrigerant circuit is empty and the A/C compressor idles with the engine.

If it is necessary to start the engine with a discharged refrigerant circuit:

The refrigerant circuit must be fully assembled.

At least a quarter of the prescribed refrigerant oil must be in the A/C compressor.

Do not let the engine speed go above 2, 000 RPM.

If the engine is ran less than 10 minutes.