Daikin RKN09KEVJU, Руководство по обслуживанию

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SiUS041111 Outdoor Unit: 09/12 Class
Removal Procedure 189

Before working, make
sure that the refrigerant
gas is empty in the circuit.

Be sure to apply nitrogen
replacement when heating
up the brazed part.
Warning
Be careful not to burn yourself
with the pipes and other parts
that are heated by the gas
brazing machine.
Warning
If the refrigerant gas leaks during
work, ventilate the room. If the
refrigerant gas is exposed to
flames, toxic gas may be
generated.
Caution
For global environment
protection, do not discharge the
refrigerant gas in the
atmosphere. Make sure to collect
all the refrigerant gas.
Cautions for restoration
1. Restore the piping by non-
oxidation brazing.
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. Keep below
120°C (248°F) by wrapping the
four-way valve with a wet cloth
and provide water so that the
cloth does not dry.
In case of difficulty with gas
brazing machine
1. Disconnect the brazed part
where is easy to disconnect and
restore.
2. Cut pipes on the main unit with
a tube cutter in order to make it
easy to disconnect.
2. Remove the four-way
valve.
1 Heat up the brazed
point (a) and withdraw
the piping with pliers.
2 Heat up the 3 brazed
points of the four-way
valve. Disconnect the
point (b) first.
3 Disconnect the points
(c) and (d).
Note:

Do not use a metal saw for
cutting pipes to prevent
sawdust from entering the
circuit.

When withdrawing the
pipes, be careful not to
pinch them firmly with
pliers. The pipes may get
deformed.

Provide a protective sheet
or a steel plate so that the
brazing flame cannot
influence peripheries.
Step Procedure Points
(R11802)
(a)
(R11804)
(d)
(c) (b)