Original Cruisair

[ian w]

One of my 1981 units have tube coming out of the electrical compartment on the compressor unit in the engine room
I don’t understand what this is for I need to take this cover off to check the capacitors
Very thin copper tube not on all the compressor units

 

[Captain Ralph]

That is a remote pressure switch capillary tube. You may have two of them going into a large box.
Try not to mess with them.

 

[ian w]

I don’t think I can get to the electrical components without undoing this tube
Need to change a capacitor

 

[jim rosenthal]

If you can't change the capacitor without undoing the capillary tube, might be time to get an AC service person on your boat. Can this be carefully bent out of the way?

 

[Captain Ralph]

If you can't change the capacitor without undoing the capillary tube, might be time to get an AC service person on your boat. Can this be carefully bent out of the way?

I have seen them run guitar string tight and then coiled up with lots of slack.
Just be care full and not bend or pull to hard.
I'm sure it's doable with patience and care.

I would think somebody has replaced a cap before in 42 years.

 

[ian w]

If you can't change the capacitor without undoing the capillary tube, might be time to get an AC service person on your boat. Can this be carefully bent out of the way?

In UK for a month or two
Will check your advice on my return to Florida Jim

 

[cww]

I don’t think I can get to the electrical components without undoing this tube
Need to change a capacitor

It's not that simple, the R22 runs through that capillary tube. You will need to empty and recharge the system if you do it that way, as a practical matter it will require an a/c tech because most people don't have the vacuum pump, etc., that you have to have to DIY a/c stuff and buying all of it will cost more than the tech's visit. Although I did this anyway, because I like to be able to address common problems without waiting for a month on a company to show up. It's not a logical purchase though. The refrigerant recovery machine, manifold set, and vacuum pump were like $1k all-in. But I can do my own a/c work now.