Make all the connections and take it to the garage where it will be charged.

Question: How long is too long for the drier to be open without getting the system charged with refrigerant?

The answer is variable with atmospheric and enviornmental conditions:
* Extreme humidity conditions (99%) require longer vacuum to remove moisture, the reverse is also true.
* Do not allow particles (dust/dirt/etc) into the system.

Do NOT worry yourself into an ulcer, a good vacuum pump will remove the moisture.

Automotive Air Conditioning Systems
http://www.familycar.com/ac1.htm

Aircondition.Com
http://aircondition.com/knowledge_base/Home.html




Have a great6 day.

__________________
ASE Master Mechanic
https://whunter.carrd.co/

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D
2003 Volvo V70

https://www.boldegoist.com/