Samsung DC48GTTX User Manual download pdf (Page 16)

E-16

Performing leak tests

Insulation

No gap

NBR(T13.0 or thicker)

 The designs and shape are subject to

change according to the model.

LEAK TEST WITH NITROGEN (before opening valves)

In order to detect basic refrigerant leaks, before recreating the vacuum

and recirculating the R22, it’s responsable of installer to pressurize the whole

system with nitrogen (using a cylinder with pressure reducer) at a pressure

above 30 bar (gauge).

LEAK TEST WITH R22 (after opening valves)

Before opening valves, discharge all the nitrogen into the system and create

vacuum. After opening valves check leaks using a leak detector for

refrigerant R22.

Once you have completed all the connections, check for possible leaks using

leak detector specifically designed for HFC refrigerants.

To check for gas leaks on the... Then, using a leak detector,

check the...

Outdoor unit Valves on sections A and B.

Once you have checked that there are no leaks in the system, you can insulate

the piping and hose.

To avoid condensation problems, place an insulator around each

refrigerant pipe.

Note  When insulate the pipe, be sure to overlap the insulation.

 You have to use more than 120°C insulation(T13.0 or thicker

Acrylonitrile Butadien Rubber) for the gas refrigerant pipe.

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Samsung DC48GTTX User Manual Page 16