NO - as air conditioning systems use fluorinated gases as refrigerants, all work on them must be done by professionals holding valid F-Gas certification. There is a range of different qualifications and certifications that apply for this, so it's always best to ask someone who is qualified to do this.
Roslin
Roslin (previously spelt Rosslyn or Roslyn) is a town in Midlothian, Scotland, 7 miles (11 km) to the south of the funding city Edinburgh. It depends on high ground, near the northwest financial institution of the river North Esk. Tale has it the village was founded in 203 A.D. by Asterius, a Pict. In 1303 Roslin was the site of a battle of the First War of Scottish Independence. In 1446, Rosslyn Church was created, under the guide of William Sinclair, 1st Earl of Caithness. Roslin ended up being important as the seat of the St Clair (or Sinclair) family. In 1456 King James II gave it the standing of a burgh. Coal mining has actually been a significant line of work from the twelfth to the late twentieth centuries. From the 19th century onward, the tourist attractions of the Glen, Castle and Church created Roslin as a preferred tourist location. Remarkable visitors included J. M. W. Turner, William Wordsworth (that composed a rhyme in the chapel whilst running away a tornado) and his sis Dorothy, who composed "'I never went through an extra tasty dell than the glen of Rosslyn". William Morris saw in March 1887, keeping in mind in his Socialist Diary that Roslin was "a lovely glen-ny landscape much ruined, by the suffering of Scotch building and a manufactory or more." On the north-western side of the town used to be Roslin Institute, a biological research study establishment, where in 1996 Dolly the sheep ended up being the initial animal to be cloned from an adult somatic cell. It relocated to Easter Bush in 2011.