Coolant 'snap' connectors for split A/Cs ( and fridges?)

[pcatterall]

Following my(succesful) experiment with using a portable A/C in the boat but wanting to fit a 'proper; system I looked at the split systems which seem to be the vogue here in Sothern France.
I see that the outside box is connected to the inner with some sort of semi flexible coolant pipes, these connect to outer box using a clip on 'junction box'.
My question is....... Can this connection be made and unmade at will or is it a fit once and leave alone ( or loose the coolant). If the former then in a boat situation the 'outside' box could be removed and stowed for sailing. I suspect though that it is the later as I recall that usually when fitting a cooler in the ice box that the connection can only be made once.
Cheers guys

 

[nigelmercier]

In my limited experience, they are one time only. And they leak a little even on the first join.

 

[superheat6k]

Instant connections on fridge pipe work should be avoided. Once the system is together it should left that way except for essential maintenance. Once assembled the pipe work should be pressure tested and then deep evacuated. Most split systems come with the outdoor part (condensing unit) pre-charged with small service valves where the system is connected.

If any air is left in the system when the valves are opened it will cause havoc. The problem with instantaneous fittings is that small losses of gas can occur each time they are broken or re-connected. Minute quantities of air can also enter the system, and these can accumulate to wreak the same havoc. Some fitters vent the system through, but this is a bad practice and causes some of the pre-charged gas to be lost.

Therefore once connected and prepared the system is best left that way.