Disassembly And Reassembly; Necessary Tools - Samsung AE044MXTPEH Service Manual

3. Disassembly and Reassembly

3-1 Necessary Tools

Refrigerant pipe installation
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 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
Pipe cutter
Flaring tool
Refrigerant machine oil
Torque wrench
Pipe bender
Nitrogen gas
Welder
Manifold gage
Refrigerant charging hose
Vacuum pump
Scale for refrigerant charg-
ing
Gas leak detector
Flare nut
22
Installation process/purpose
Pipe cutting
Pipe flaring
Apply refrigerant
Refrigerant pipe
oil on flared part
installation
Connect flare nut
with pipe
Pipe bending
Prevent oxidation
within the pipe
Air tightness test
Pipe welding
Vacuuming,
Air tightness test ~ charging
additional refrigerant
refrigerant charging and checking
operation
Pipe drying
Refrigerant charging
Gas leak test
Refrigerant leakage may occur when the conventional flare nut for R-22 is used.
Compatibility with conventional tool
Exclusive ether oil, ester oil, alkali benzene oil or synthetic oil
Need exclusive one to prevent mixture of R-22 refrigerant oil use
and also the measurement is not available due to high pressure
Need exclusive one since there is risk of refrigerant leakage or inflow
Compatible (Use products which contain the check valve to prevent
the oil from flowing backward into the outdoor unit.)
Use the one that can be vacuumed up to -100.7kpa(5Torr).
Need exclusive one. (Ones used for R-134a is compatible)
Must use the flare nut equipped with the product.
Compatible
Compatible
of impurities
Compatible
Samsung Electronics