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FR
2.4 Instruments
INSTRUMENTS
A groupe de manomètres
B coupe-tube
C tube de charge
D balance électronique pour charge réfrigérant
E clé dynamométrique
F cintreuse à pince
G clé hexagonale de xx mm
H bouteille de réfrigérant
I pompe à vide
L détecteur de fuites pour réfrigérant HFC
CLÉ DYNAMOMÉTRIQUE
2.5 Epaisseur des tubes en cuivre
DIAMETRE NOMINAL
(pouces)
DIAMETRE EXTE-
RIEUR
(mm)
EPAISSEUR
(mm)
1/4 6,35 0,8
3/8 9,52 0,8
1/2 12,70 0,8
5/8 15,88 1,0
Les climatiseurs "split" avec réfrigérant R410A disposent d'une vanne à
trois voies au niveau de l'unité externe avec pointeau.
2.6 Comment raccorder les tuyaux
1. Enlever la calotte de fermeture des tubes après le raccordement : il faut
absolument éviter que de l'humidité ou de la saleté y entre.
2. Si le tube est courbé trop souvent, il devient rigide : ne le pliez pas plus
de 3 fois sur la même section. Déroulez le tuyau sans tirer.
3. L'isolation des tubes en cuivre doit avoir au moins 6 mm d'épaisseur.
2.7 Connexions à l'unité interne
1. Adapter la forme des tubes de raccordement au tracé.
2. Otez la calotte de fermeture des tubes de l'unité intérieure (vérifi ez
qu'aucune impureté n'est restée à l'intérieur).
3. Assemblez l'embout et placez la bride à l'extrémité du tube de raccorde-
ment conformément aux indications du tableau (tuyaux en cuivre) :
ø
NOMINAL
ø
EX-
TERIEUR
mm
EPAISSEUR
COTE A mm
CINTREUSE
CINTREUSE CONVEN-
TIONNELLE
À PINCE À PAPILLON
1/4 6,35 0,8 0-0.5 1.0-1.5 1.5-2.0
3/8 9,52 0,8 0-0.5 1.0-1.5 1.5-2.0
1/2 12,70 0,8 0-0.5 1.0-1.5 2,0- 2,5
5/8 15,88 0,8 0-0.5 1.0-1.5 2.0-2.5
64


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