Daikin VRV IV+ Service Manual page 374

5 | Maintenance
5 Maintenance
5.1 Maintenance shedule
Service manual
374
To ensure optimal availability of the unit, certain checks and inspections on the
unit and the field wiring have to be carried out at regular intervals. See the
checking procedures in this manual for inspection of the components mentioned
below.
The intervals depend on:
▪ Local legislation,
▪ the conditions at the installation site (presence of dust, sea salt, harmful gas, oil
mist, power supply fluctuation, bumps, vibration etc.),
▪ how the unit is operated (frequent stop and start, longer operation hours etc.),
▪ total running hours of the unit,
▪ ambient conditions (high heat and humidity load etc.)
Depending on the above mentioned factors, maintenance may be required sooner
than the mentioned interval here below.
The table below also assumes a unit operation of 10 hours/day and 2500 hours/
year.
Normal use of the unit is considered when a unit is not performing the stop/start
cycle (Thermo OFF and then ON) more than 6 times/hour.
Component
Electric Motor
PCB
Heat Exchanger
Sensor, Thermistor
User Interface, Switches
Drain Pan
Expansion Valve
Solenoid Valve
Air Filter
High Efficiency Filter
Fuse
Crankcase Heater
Components under
pressure
Also, the cleaning of air filters, heat exchangers, fan propellers, drain pans etc. has
to be carried out at regular intervals, see
4
units" [ 375].
Inspection
1 year
"5.2 Maintenance procedures for outdoor
Maintenance
20.000 hours
25.000 hours
5 years
5 years
25.000 hours
8 years
20.000 hours
20.000 hours
5 years
1 year
10 years
8 years
In case of corrosion
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05