Samsung AM036FXMDCH Installation Manual

Also see for AM036FXMDCH: Service manual Service manual

Contents

25ENGLISHVacuuming a pipe and an indoor unitXX Use the tools for R410A only to prevent the inflow of foreign substances and resistagainst the internal pressureXX Use the vacuum pump with the check valve to prevent pump oil from flowingbackward while the vacuum pump is stopped suddenlyXX Use the vacuum pump that can be vacuumed up to -100 7 kPa (gauge pressure),5 torrXX Close the service valve of the liquid side pipe, gas side pipe completely whenperforming air tightening test or vacuum dryingPressure IncreaseNoConnect the manifold gauge to the liquidpipe and gas pipeVacuum the liquid pipe and gas pipeusing the vacuum pumpMake sure to install check valve to prevent pump oil fromflowing into the pipeVacuum those pipes for more than 2 hoursand 30 minutesThe time of vacuum drying may differ depending on thelength of the pipe or outdoor temperaturePerform vacuum drying for at least 2 hours and 30 minutesClose the valve after checking the vacuumgauge pressure has reached at -100 7 kPa(gauge pressure), 5 torrCheck the vacuum pressure using the vacuum gaugeCheck whether the pressure is maintainedas -100 7 kPa (gauge pressure), 5 torr foran hourCharging additional refrigerantaccording to piping lengthYesCheck the gas leakVacuum destruction due to the moistureinside the pipe• Apply pressure with Nitrogen gas of 0 05MPa (gauge pressure), 7 25 psigPerform vacuum drying again up to-100 7 kPa (gauge pressure), 5 torr (for 2hours or longer) and evaluate the vacuumPressure Increase YesNo• If the pressure rises in an hour, either water remains inside the pipe, or there will be a leakCAUTIONVacuumpumpAM0@@FXMDCH_IM_EN_03408A(1).indd 25 2013-03-04 오후 4:28:21