Diameters Of The Copper Refrigeration Pipes; Preparing And Cutting Copper Refrigeration Pipes - Hitachi RCI-1.0FSN3 Service Manual

3 Piping work and
refrigerant charge

3.4.3 Diameters of the copper refrigeration pipes

Nominal diameter
mm
Ø6.35
Ø9.52
Ø12.70
Ø15.88
Ø19.05
Ø22.20
Ø25.40
Ø28.60

3.4.4 Preparing and cutting copper refrigeration pipes

Preparation
Clean the area where the copper refrigeration pipe preparation work is to be carried out. It must particularly be free of
waste, soil, wood or metal shavings and, in general, any substance that could enter the ends of the pipe during handling.
The copper pipe must be clean and have no remains of adhesive, cement, dust or other substances adhered to it.
Where the copper pipe is supplied in rolls, fit a cap on the end
and unwind it while it is resting on the ground so that the turning
movement of the roll as it is unwound forms a straight pipe.
N O T E
• The rolls of copper refrigeration pipe are normally supplied with caps on their ends.
Where the roll of pipe does not come supplied with caps, check that the inside of the pipe is clean. If it is not,
•
use a new roll of pipe.
• It is also possible to cover the end of the pipe temporarily using high quality adhesive tape.
• Do not wind and unwind the pipe continuously, as the properties of the copper for refrigeration pipes are
altered, making it more rigid and brittle.
97
SMGB0077 rev.0 - 01/2013
Thickness mm
Inches
1/4
3/8
1/2
5/8
3/4
7/8
1
1-1/8
0.80
0.80
0.80
1.00
1.00
1.00
1.00
1.00
Supply
Roll
Roll
Roll
Roll
Pipe
Pipe
Pipe
Pipe
3