SIE-86
For RK25J, RK35J, RX25J, RX35J
Removal Procedure
117
Begin your work after
recognizing complete empty
of refrigerant in the
refrigerant circuit.
Caution
Be careful about four-way valve,
pipes and so on , which were
heated up by a gas brazing
machine, so as not to get burnt
on your hands.
Cautions at the restoration.
1. Restore the piping by non-
oxidation brazing. Braze it
quickly unless nitrogen gas can
be used.
2. It is required to prevent the
carbonization of the oil inside the
four-way valve and the
deterioration of the gaskets
affected by heat. For the sake of
this, rap the four-way valve with
wet cloth and make up water so
that the cloth will not be dried
and avoid excessive heating.(it
keeps below 120 degree C).
Be careful so as not to break
pipes by pressing the pipes
excessively by a plier when
withdrawing the piping.
4
Provide a protective sheet
or a steel plate so that the
brazing flame can’t
influence the circumstance
around the four-way valve.
5
Heat up the four portions
of brazing parts on the
four-way valve. Remove
the four-way valve in the
order of (a),(b),(c),(d).
6
Heat up the blazing parts
and withdraw the pipes
connected to the four-way
valve by a plier and so on.
In case that the removal seems to
be hard;
1. Remove the piping connection
part(brazing part) easy to
remove and restore.
2. Cut the pipes on the main unit by
a miniature copper tube cutter in
order to make it easy to remove.
NOTE:
Don’t use a metal saw for cutting
pipes by all means because the
chips come into the circuit.
Step
Procedure
Points
Si-86.book Page 117 Friday, June 23, 2000 10:26 AM
