Daikin J Series Manuel de service télécharger pdf (Page 142)

Si04-115 For RK25J, RK35J, RX25J, RX35J

Removal Procedure 133

"

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

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