Daikin VRV 5-S Series - 25 Maintenance and Service; Maintenance Safety Precautions

25 | Maintenance and service
Installer and user reference guide
144
RXYSA4~6A7V/Y1B
VRV 5-S system air conditioner
4P600330-1D – 2023.02
25 Maintenance and service
NOTICE
Maintenance MUST be done by an authorised installer or service agent.
We recommend performing maintenance at least once a year. However, applicable
legislation might require shorter maintenance intervals.
NOTICE
Applicable legislation on fluorinated greenhouse gases requires that the refrigerant
charge of the unit is indicated both in weight and CO
2
equivalent.
Formula to calculate the quantity in CO
2
equivalent tonnes: GWP value of the
refrigerant × total refrigerant charge [in kg] / 1000
In this chapter
25.1 Maintenance safety precautions............................................................................................................................................ 144
25.1.1 To prevent electrical hazards................................................................................................................................. 145
25.2 Checklist for yearly maintenance of the outdoor unit........................................................................................................... 146
25.3 About service mode operation............................................................................................................................................... 146
25.3.1 To use vacuum mode ............................................................................................................................................. 146
25.3.2 To recover refrigerant ............................................................................................................................................ 146
25.1 Maintenance safety precautions
DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING/SCALDING
WARNING
Prior to start working on systems containing flammable refrigerant, safety checks are
necessary to ensure that the risk of ignition is minimised. Therefore, some
instructions should be followed.
Please refer to the service manual for more information.
NOTICE:Risk of electrostatic discharge
Before performing any maintenance or service work, touch a metal part of the unit in
order to eliminate static electricity and to protect the PCB.