Daikin E Series Service Manual page 304

SiBE04-624
Step
Provide a protective sheet
or a steel plate so that the
brazing flame cannot
influence peripheries.
Before working, make sure
that the refrigerant is
empty in the circuit.
Be sure to apply nitrogen
replacement when heating
up the brazed part.
2. Remove the four way
valve
Heat up the 4 brazed
1
parts of the four way
valve. Remove it in the
order of , ,
.
Heat up the brazed part
2
and pull out the piping
side with pliers.
Warning
Ventilate when
refrigerant leaks
during the work.
(If refrigerant
contacts fire, it will
cause to arise toxic
gas.)
Caution
Be careful not to get
yourself burnt with
the pipes and other
parts that are heated
by the gas welding
rod.
Caution
From the viewpoint of
global environment
protection, do not
discharge the
refrigerant gas in the
atmosphere. Make
sure to recover the
refrigerant gas with
the recovery system.
Removal Procedure
Procedure
,
Outdoor Unit
Points
Cautions for restoration
1. Restore the piping by non-
oxidation brazing.
In case of you cannot use
the nitrogen gas, restore as
quickly as possible.
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, wrap
the four way valve with wet
cloth and provide water so
that the cloth will not be
dried and avoid excessive
heating. (Keep below
120°C)
Be careful so as not to
break the pipes by pressing
it excessively by pliers when
withdrawing it.
In case of the difficulty with
gas brazing machine
1. Disconnect the brazed part
where is easy to disconnect
and restore.
2. Cut pipes on the main unit
by a miniature copper tube
cutter in order to make it
easy to disconnect.
Note: Do not use a metal
saw for cutting pipes by all
means because the sawdust
come into the circuit.
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