Daikin D Series Service Manual page 207

Outdoor Unit
Step
198
Procedure
SiBE12-519
Points
Warning
Ventilate when refrigerant leaks
during the work.
(If refrigerant contacts fire, it will
cause to arise toxic gas.)
Caution
Be careful about the four way
valve, pipes and so on, which
were heated up by a gas
brazing machine, so as not to
get burnt your hands.
Cautions for restoration
1. Restore the piping by non-
oxidation brazing. Braze it
quickly when no 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, 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)
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.
Removal Procedure