Dear grayreef,
Yes, concur with Montego. Here in the US ( but can be ordered in Curacao) you can get a leak test kit with a small UV flashlight, special can of UV dye/refrigerant, and funky yellow sunglasses.
http://www.id-usa.com/catalog.asp?CID=30Back to the leak. Your Santa Fe AC is a sealed system. You have silicon O-rings at each connection ( compressor to hi-pressure line, hi-pressure line to evaporator, evaporator to low-pressure, etc). Since you had your entire refrigerant leak out, what changed? Did you get a puncture in one of the lines (most likely)? Did you fail to torque the condenser line connections, or cut the O-rings during the installation? Do you have dirt in the low-pressure coupler valve, preventing a proper close seal?
Byron