12 Rittal Blue e+ fan-and-filter unit assembly and operating instructions
EN
Inspection and maintenance
◾ Now fold the louvred grille back onto the housing
until it latches audibly.
8 Inspection and maintenance
Risk of electric shock!
The unit is live.
Switch o the power supply before
opening, and take suitable precautions
against it being accidentally switched
back on.
The built-in, maintenance-free fan is mounted on a
friction bearing (3237.xxx) or ball bearing (3238.xxx to
3244.xxx), and is protected against humidity and dust,
and equipped with a temperature monitor.
The life expectancy is at least 40,000 operating hours
(L10, 40°C). The fan-and-filter unit is thus largely main-
tenance free.
From time to time, the components may need to be
cleaned using a vacuum cleaner or compressed air if
they become visibly dirty.
Any stubborn, oily stains may be removed using a
non-flammable detergent, such as degreaser.
Caution!
Risk of fire!
Never use flammable liquids for clean-
ing.
Fig.19: Cleaning
Sequence of maintenance measures:
– Check the level of dirt.
– Filter soiling?
Replace the filter.
– Fan membranes soiled?
Clean.
– Check the noise generation of the fan.
– Compressed air cleaning
9 Storage and disposal
Note:
Risk of damage!
The fan unit must not be stored at tempera-
tures above +70°C or below -30°C.
Disposal can be performed at the Rittal plant.
◾ Please contact us for advice.
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