ICP HMC009KD1, Руководство по обслуживанию

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(3) Flaring work and connection
of piping
1) Flaring work
Main cause for gas leakage is due to defect in flaring
work. Carry out correct flaring work in the following pro-
cedure.
1. Cut the pipes and the cable.
■
Use the piping kit accessory or the pipes purchased
locally.
■
Measure the distance between the indoor and the out-
door unit.
■
Cut the pipes a little longer than measured distance.
■
Cut the cable 1.5m(4.9ft) longer than the pipe length.
2. Burrs 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.
3. Putting nut on
■
Remove flare nuts attached to indoor and outdoor unit,
then put them on pipe/tube having completed burr
removal. (not possible to put them on after flaring work)
4. Flaring work
■
Carry out flaring work using flaring tool as shown below.
Firmly hold copper pipe in a die in the dimension shown in
the table above.
5. Check
■
Compare the flared work with figure below.
■
If flare is noted to be defective, cut off the flared section
and do flaring work again.
- 26 -
Copper
pipe
90
° Slanted Uneven Rough
Bar
Copper pipe
Clamp handle
Red arrow mark
Cone
Yoke
Handle
Bar
"A"
Inclined
Inside is shiny without scratches
Smooth all round
Even length
all round
Surface
damaged
Cracked Uneven
thickness
= Improper flaring =
Pipe
Reamer
Point down
Flare nut
Copper tube
Outside diameter A
mm inch mm
ø6.35 1/4 0~0.5
ø9.52 3/8 0~0.5
ø12.7 1/2 0~0.5
ø15.88 5/8 0~1.0