Vacuum Drying - Samsung RD060PHXEA Installation Manual

Vacuum Drying

Use a manifold gauge for R410A to prevent the inflow of

foreign substances and resist against the internal pressure.
Use the vacuum pump with the check valve to prevent pump

oil from flowing backward while the vacuum pump is stopped.
Vacuum system to 5Torr (666.6Pa, 0.0067 kgf/cm², 5 mmHg).

Close the service valve of the liquid side pipe and gas side pipe

completely.
Connect the manifold gauge to the
liquid side pipe and gas side pipe.
Perform vacuum drying of the liquid
side pipe and gas side pipe using the
vacuum pump.
Perform vacuum drying works for
2 hours and 30 minutes or more.
Close the valve after checking the vacuum
gauge pressure has reached at 5Torr.
Pressure Increase
Fill refrigeration agent
If pressure rises in an hour, moisture remains in the pipe work or there is a leak.
RD060PHXEA_IM_E_32352A(2).indd
Make sure that install check valve to prevent pump oil from
flowing into the pipe.
The time of vacuum drying may differ depending on
the length of the pipe or outdoor temperature.
Perform vacuum drying for at least 2 hours and 30 minutes.
Check the vacuum pressure using the vacuum gauge.
Yes
No
No
25
Manifold gauge
Low pressure side
Gas side
pipe
Liquid side pipe
Service port
Check for gas leakage
purging the system with nitrogen to
absorb moisture and then vacuum
system again.(0.05 Mpa)
Vacuum desiccate again, to reach 5Torr
(666.6Pa, 0.0067 kgf/cm², 5 mmHg).
(2 hours and more)
Pressure Increase
High
pressure side
Vacuum
pump
Yes
25
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2010-07-26 ｿﾀﾈﾄ 2:19:59