5 Carrying out the electrical
Rittal fan-and-filter unit assembly and operating instructions
9
EN
5
Carrying out the electrical
installation
5.1 Installing the power supply
• Complete the electrical installation by
following the wiring plans.
• Remove the red cover from the electri-
cal connection.
Fig. 3:
Access the electrical connection
• Insert the connection cable with wire end
ferrules into the screwless spring termi-
nals. Choose an appropriate pre-fuse
according to the line cross-section
(2 x 0.75 – 2.5 mm² multi-wire,
2 x 1.5 – 2.5 mm² fine-wire soldered).
• Re-attach the electrical connection cover.
5.2 Rotating the voltage connection
If the position of the voltage connection is
not ideally accessible, it may be rotated
through 90° and snapped into position. To
this end, press down on the release button
of the bayonet connection at the rear of the
fan. Units SK 3238.xxx to SK 3239.xxx are
released by pulling out the clip (see Fig. 4)
of the bayonet connection.
Fig. 4:
Release the bayonet connection
Units SK 3240.xxx, SK 3241.xxx,
SK 3243.xxx to SK 3245.xxx are released
by pressing the release button of the
bayonet connection (see Fig. 5), located
on the opposite corner from the connec-
tion terminal.
Fig. 5:
Release the bayonet connection
5.3 Changing the direction of
airflow
The direction of airflow blows into the enclo-
sure from the outside as standard. Should it
become necessary to change the direction
of airflow for technical reasons (space,
specific component air routing etc.), this is
easily achieved. Simply release the fan
housing and rotate it through 180°.
To release, please follow the same proce-
dure as described under “5.2 Rotating the
voltage connection”, page 9.
Please also observe the instructions out-
lined under “4.2.1 General”, page 7.
Note:
For technical data refer to
the rating plate.
Caution!
If no wire end ferrules are
used, the insulation of the
individual wires should be
stripped to a max. of 9 mm
(to comply with clearance
and creepage distances).
SK 3238.xxx
SK 3239.xxx
Summary of Contents for SK 3237 Series
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