5
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Maintenance
Service manual
374
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
5 Maintenance
5.1 Maintenance shedule
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
Inspection
Maintenance
Electric Motor
1 year
20.000 hours
PCB
25.000 hours
Heat Exchanger
5 years
Sensor, Thermistor
5 years
User Interface, Switches
25.000 hours
Drain Pan
8 years
Expansion Valve
20.000 hours
Solenoid Valve
20.000 hours
Air Filter
5 years
High Efficiency Filter
1 year
Fuse
10 years
Crankcase Heater
8 years
Components under
pressure
In case of corrosion
Also, the cleaning of air filters, heat exchangers, fan propellers, drain pans etc. has
to be carried out at regular intervals, see
Summary of Contents for VRV IV+
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