Sealing test of the refrigeration system

 Use Nitrogen (dry, pressurized, low cost and non-greasy atmosphere);
Use pressure regulator;
 Do not exceed the indicated pressure limits;
 Prestress with 10 Kgf / cm 2 (use glycerin soap foam);
 Final test, with 20 Kgf / cm 2 and duration of 24 hours (note pressure and temperature).
 For systems with R410A, pressurize with 38.20 Kgf / cm 2 (550 psig);
 Variation permissible 1.5 psi for each 1 ° C;