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Fig. 6:
Release the louvred grille
Note:
If it becomes necessary to change the direc-
tion of the airflow (see section 5.4 "Chang-
ing the direction of airflow", page 8), the
installation is reversed accordingly.
7.2
Replacing the pleated filter
◾ First press the catch of the louvred grill (Rittal logo)
up slightly with one finger (see fig. 6).
◾ Once it is released, the louvred grille can be dropped
open by approx. 70° or 90°.
◾ Remove the standard chopped-fibre filter contained
in the scope of supply; it is not required.
◾ Place the pleated filter in the louvred grille. The "Top"
logo indicates the insertion direction (see fig. 7)
Fig. 7:
Installing the IP54 pleated filter
◾ To seal properly, ensure that the side tabs of the
pleated filter are placed over the ribs of the louvred
grille.
Rittal EC fan-and-filter unit assembly and operating instructions
Inspection and maintenance
Fig. 8:
Positioning of the side tabs
◾ For IP55 only: place the IP55 absorbent fleece sup-
plied with the pleated filters on the previously placed
pleated filter (see fig. 9). The installation direction of
the absorber is not critical.
Fig. 9:
Installing the IP55 pleated filter
◾ Now push the louvred grille back onto the enclosure
until it snaps audibly into position.
8
Inspection and maintenance
Risk of electric shock!
The unit is live.
Switch off 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 ball
bearing, and is protected against humidity and dust,
and equipped with a temperature monitor.
The life expectancy is at least 60,000 operating hours
(L10, 40 °C). The EC fan-and-filter unit is thus largely
maintenance free.
EN
9
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