Part 3. Repair; Refrigerant Repair Procedures; Refrigerant Piping Handling; Recovery Procedure - Daikin FTXJ-M Service Manual

ESIE16-02K |

Part 3. Repair

This part contains the following chapters:

Refrigerant repair procedures ..............................................................................................................................................................61

Service tools.........................................................................................................................................................................................65
Unit specific repair procedures.............................................................................................................................................................66
3.1. Refrigerant repair procedures
Overview:

Refrigerant piping handling ..................................................................................................................................................................61

Recovery procedure .............................................................................................................................................................................61

Refrigerant pump down ........................................................................................................................................................................63
Piping repair procedures ......................................................................................................................................................................64
3.1.1. Refrigerant piping handling
• Make sure the applied pressure is never higher than the unit design pressure as indicated on the nameplate (PS).
• Work according the F-gas regulation and/or local regulations.
• Make sure the correct amount according the F-gas regulation label on the unit (factory + additional where required) of
refrigerant is charged after repair.
• Make sure to use the appropriate equipment and tools according to the refrigerant and unit type.
• R32 can be charged in gas phase.
• Make sure to use a digital scale (no charging cylinder).
• Execute correct vacuum drying procedure after repair work:
- -0,1 MPa / -760 mmHg / -750 Torr / -1 bar for at least 1 hour.
- Connect the unit according the available service ports, refer to
- Use related field setting where necessary to open expansion valve/solenoid valve.
3.1.2. Recovery procedure

3.1.2.1. Outdoor unit casing

1. Switch off the Daikin unit via the user interface.
2. Manually open the expansion valve (located on the outdoor unit).
3. Connect the vacuum pump, manifold, recovery unit and refrigerant bottle to the service port as shown below.
For the location of the service ports, refer to
31/05/21 | Version 1.1
RA R32 Split & multi split M-Series
Part 3. Repair
"Recovery procedure" on page
"Outdoor unit" on page 119.
3.1. Refrigerant repair procedures
61.
Page 61