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Maintenance and service
Installer and user reference guide
86
EKVDX32~100A2VEB
VRV system air conditioner
4P664010-1 – 2021.08
22 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
INFORMATION
During a test run of the system or during maintenance, the R32 safety needs to be
deactivated. Refer to
"19.2 To deactivate the R32 safety system"
78].
22.1 Checklist for yearly maintenance of the indoor unit
Check the following at least once a year:
▪
Heat exchanger
▪
Drain pan
Instructions
The heat exchanger and drain pan of the indoor unit can get contaminated and
blocked up. It is recommended to clean the heat exchanger and drain pan yearly. A
blocked heat exchanger can lead to too low pressure or too high pressure leading
to worse performance.
When cleaning the indoor unit heat exchanger and drain pan make sure to:
▪
Use proper field supply cleaning agent which is suitable for cleaning heat
exchangers and drain pans.
▪
Clearly follow the instructions of local supply cleaning agent and to NOT use
household cleaning agents.
▪
Rinse the heat exchanger and drain pan with water after the cleaning process.
CAUTION
Rinse out the cleaning agent until there is NO cleaning agent left. Otherwise, the
corrosion of heat exchanger and drain pan may occur. Pay attention to the cleaning
agent that may also corrode other materials of the indoor unit (Aluminium, copper,
plastic, ABS, …).