Installation Manual
31
Precautions for refrigerant piping
Both ends of a copper pipe should be sealed.
Foreign substances and moisture entering into
the pipe may cause a product failure; such
failure will not be covered by the warranty.
7
Use dedicated high pressure
tools for R410A.
8
Replace the vacuum pump oil at regular
intervals.
A measurement reading less than 0.1
torr during vacuum operation indicates a
normal state. If the reading is in the range
of 0.2 to 0.5 torr, you should replace the
oil (if oil is mixed with dust or moisture
coming from outside during the vacuum
operation, it takes longer or may be
impossible to achieve the desired vacuum
state.)
9
11//2
2”
”U
UN
NF
F(R
R 4
410
0A)
When performing installation
1
2
When installing gas pipes horizontally, apply a gradient of 1/250 downwards (2cm
downwards over a length of 5m) to the flowing direction of refrigerant to facilitate
the flow of refrigerant.
Liquid pipes and gas pipes must be insulated separately.
Insulation work by wrapping a liquid pipe and a gas pipe together will cause
heat exchange between these pipes, significantly deteriorating the compressor's
performance.
