Samsung AM240MXVGNR/ET - Air Tightness Test and Vacuum Drying

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ENGLISH
Air tightness test and vacuum drying
Air tightness test
 Ƹϑʪϩͱͱϑ˙ͱθŵࣛߦߣߢϩͱΧθʪЭʪϩϩ˵ʪѤͱиͱ˙˙ͱθʪ˝ϑЇɵϑϩɇʀʪϑɇʒθʪϑϑϩɇ˝ɇϑϩϩ˵ʪϩʪθɇΧθʪϑϑЇθʪ࢏
 UͱͱϩθʪͱЭʪϩ˵ʪʀͱθʪͱ˙ѣ˝Χͱθϩ࢏
 Use Nitrogen gas for air tightness test as shown in the illustration.
H/P H/R
Manifold gage
High
pressure side
Low pressure side
Filling
port
Gas
pipe
Liquid pipe
Nitrogen gas
Service valve
Manifold gage
High
pressure
side
Low pressure side
Filling
port
Gas
pipe
High pressure
gas pipe
Nitrogen gas
Service valve
Liquid
pipe
Apply pressure to the liquid side pipe and gas side
pipe (when installing outdoor units in module)
with Nitrogen gas at 4.1MPa.
If you apply pressure at more than 4.1MPa, pipes may
get damaged. Apply pressure with pressure regulator
and pay attention to the pressure of the nitrogen.
Keep it for minimum 24 hours to check if pressure
drops.
After applying Nitrogen gas, check there's any change of
pressure, using a pressure regulator.
If the pressure drops, check for gas leakage.
If the pressure is changed, apply soap water to check for
leakage and check the pressure of the nitrogen gas again.
Maintain 1.0MPa of the pressure before
performing vacuum drying and check for further
gas leakage.
˙ϩʪθʀ˵ʪʀ˝ϩ˵ʪѣθϑϩ˝ɇϑʪɇɇ˝ʪࡥɇϩɇߣ࢏ߢđťɇϩͱ
check for further gas leakage.
࡛Perform a Nitrogen gas leak test with the service valve of the outdoor unit closed.
࡛Ǯ˵ʪʀ˵ɇθ˝˝ϩ˵ʪϩθͱ˝ʪ˝ɇϑࡥʀ˵ɇθ˝ʪϩ˙θͱϩ˵ʪɵͱϩ˵࣑˵˝˵࡛ͱиΧθʪϑϑЇθʪ࣒ϑʒʪϑ࢏
࡛Ã˙ϩ˵ʪΧΧʪϑѣʪʒɇϑ˵ͱθϩϩʪиϩ˵ɇ˵˝˵цʪуʀʪϑϑЭʪΧθʪϑϑЇθʪͱ˙Ęϩθͱ˝ʪ˝ɇϑࡥϩ˵ʪΧΧʪϑɇц
get damaged. Make sure to use a regulator to prevent the high pressure Nitrogen gas, over 4.1MPa,
from entering into the pipe.
CAUTION