3 Piping work and refrigerant charge
Copper refrigerant pipe
SMGB0099 rev.0 - 12/2016
102
Remove any internal burrs arising from the pipe cutter using a pipe reamer.
! CAUTION
• While making the cut, slant the pipe downwards to prevent burrs or shavings from falling inside the pipe.
• Do not use hand saws, circular saws, abrasive grinders or other tools that generate shavings.
• Strictly follow national or local regulations regarding occupational health and safety.
• Wear appropriate means of protection during cutting or brazing operations and installation (gloves, eye protection, etc).
If the pipe is not to be immediately ared, protect the end of the pipe using a suitable cap or high quality insulation tape.
! CAUTION
Do not leave the ends of ared pipes unprotected.
3.4.3 Bending copper pipes
Where the refrigerant pipes are to be bent, always use a bending tool or a spring, both of a diameter that is adapted to
the pipe to be bent.
The bending radii must be as wide as possible so that the gas or liquid refrigerant ow is not altered and no circulation 
noise is generated during operation.
? NOTE
• Bends in refrigerant pipes reduce system performance due to changes in the ow of gas and liquid refrigerant circulation.
• Do not use any other tool to bend pipes, as the pipe may be excessively bent or crushed and its inner diameter reduced.
! CAUTION
Never bend pipes with radii of less than 90°.
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