AEG EXN09C58HW Installation Manual page 11

3.3.1 Flaring work
Main cause for refrigerant leakage is due
to defect in the flaring work.
Carry out correct flaring work using the
following procedure:
1. Cut the pipes and the cable.
• Use the piping kit accessory or
pipes purchased locally.
• Measure the distance between the
indoor and the outdoor unit.
• Cut the pipes a little longer than the
measured distance.
• Cut the cable 1.5m longer than the
pipe length.
Fig.3.3.1-1
Pipe
Oblique
2. Burr removal
• Completely remove all burrs from
the cut cross section of pipe/tube.
• Put the end of the copper tube/
pipe in a downward direction as
you remove burrs in order to avoid
dropping burrs into the tubing.
Fig.3.3.1-2
Face Down
Roughness Burr
Pipe
Reamer
3. Put nut on
• Remove flare nuts attached to
indoor and outdoor unit, then put
them on pipe/tube after completed
burr removal. (It is not possible to
put them on after flaring work.)
Fig.3.3.1-3
Flare Nut
Copper Tube
4. Flaring work
• Carry out flaring work using flaring
tool as shown below.
Fig.3.3.1-4
Bar
Bar
Clamp Handle
• Firmly hold copper pipe according
to the dimension shown in the table
below.
ENGLISH 11
Copper
Pipe
Handle
Yoke
Cone
Red arrow
mark