Samsung Electronics 403. Disassembly and Reassembly3-1 Necessary ToolsRefrigerant pipe installationRefrigerant pipe work∙ The length of refrigerant pipe should be as short as possible and the height difference between an indoor and outdoor unitshould be minimized.∙ Piping work must be done within allowable piping length, height difference, and the allowable length after branching.∙ The pressure of the R-410A is high. Use only certified refrigerant pipe and follow the installation method.∙ After installing the pipes, calculate the total length of the pipe to check if additional refrigerant is needed.When you need to charge the additional refrigerant, make sure to use R-410A refrigerant.∙ Use clean refrigerant pipe and there shouldn’t be any harmful ion, oxide, dust, iron content or moisture inside pipe.∙ Use tools and accessories that fit on R-410A only.Tool Installation process/purpose Compatibility with conventional toolPipe cutterRefrigerant pipeinstallationPipe cutting CompatibleFlaring tool Pipe flaringRefrigerant machine oil Apply refrigerantoil on flared part Exclusive ether oil, ester oil, alkali benzene oil or synthetic oilTorque wrench Connect flare nutwith pipeCompatiblePipe bender Pipe bendingNitrogen gas Air tightness testPrevent oxidationwithin the pipeWelder Pipe weldingManifold gage Air tightness test ~additionalrefrigerant chargingVacuuming,chargingrefrigerantand checkingoperationNeed exclusive one to prevent mixture of R-22 refrigerant oil useand also the measurement is not available due to high pressureRefrigerant charginghoseNeed exclusive one since there is risk of refrigerant leakage orinflow of impuritiesVacuum pump Pipe dryingCompatible (Use products which contain the check valve to preventthe oil from flowing backward into the outdoor unit.)Use the one that can be vacuumed up to -100.7kpa(5Torr).Scale for refrigerantcharging Refrigerant charging CompatibleGas leak detector Gas leak test Need exclusive one. (Ones used for R-134a is compatible)Flare nut Must use the flare nut equipped with the product.Refrigerant leakage may occur when the conventional flare nut for R-22 is used.Refrigerant pipe work∙ The length of refrigerant pipe should be as short as possible and the height difference between an indoor and outdoor unit should beminimized.∙ ,QVWDOOWKHUHIULJHUDQWSLSHDFFRUGLQJWRPDLQSLSHVL]HRIHDFKRXWGRRUXQLWFDSDFLW\∙ :KHQWKHSLSHOHQJWK LQFOXGLQJHOERZ EHWZHHQDQRXWGRRUXQLWDQGWKHIDUWKHVWLQGRRUXQLWH[FHHGV P\RXPXVWLQFUHDVHWKHVL]HRIWKHSRSH PDLQSLSH E\RQHJUDGHZKLFKFRQQHFWVEHWZHQWKHRXWGRRUXQLWWRWKHILUVWEUDQFKMRLQW∙ )RU+5PRGHO:KHQWKHSLSHOHQJWK LQFOXGLQJHOERZ EHWZHHQDQRXWGRRUXQLWDQGWKHIDUWKHVWLQGRRUXQLWH[FHHGV P\RXPXVWLQFUHDVHWKHVL]HRIWKHOLTXLGSLSHE\RQHJUDGHDPRQJWKHSLSHV PDLQSLSH ZKLFKFRQQHFWVEHWZHHQWKHRXWGRRUXQLWWRWKHILUVWEUDQFKMRLQW
