Performing Leak Test & Vacuum Drying - Samsung AFPCC052CA0 Installation Manual

Performing Leak Test & Vacuum Drying
18
E-
Before completing the installation(insulation of the hose and piping),
you must check that there are no gas leaks and remove air in the unit.
1 Purge the refrigerant pipes and perform the vacuum test.
N N N N o o o o t t t t e e e e The pressure should not be increased for 1 minute.
2 Inject nitrogen into the pipes until the pressure becomes 2kg/cm
3 Check for gas leaks by using soapy water.
4 Let the pipes under 28kg/cm
pressure has been decreased.
5 Discharge the nitrogen.
Make the pipes vacuous.
6
7 If the piping is longer than the standard length, refrigerant must be added.
For further details on adding refrigerant, refer to page 22.
8 Set the outdoor unit valves to the open position, then the refrigerant circulate
through whole air conditioner system.
2 pressure for 24 hours, then check that the
2 at least.