Rittal EC fan-and-filter unit assembly and operating instructions
7
Carrying out the electrical connection
EN
tions as well as the provisions of the responsible power
supply company. Electrical connection must only be
carried out by a qualified electrician who is responsible
for compliance with the existing standards and regula-
tions.
4.4.1 Connection data
– The voltage and frequency of the connection must
correspond to the values stated on the rating plate.
– Electrical connection and any repairs may only be
carried out by authorised specialist personnel.
Use only original spare parts!
– Install the pre-fuse cited on the rating plate (cir-
cuit-breaker or slow fuse) to protect the cable and
fan from short circuits. If several fans are operated on
a single fuse, observe the total connected load.
– The direction of airflow and the direction of rota-
tion are each marked on the motor housing with an
arrow.
4.4.2 Overvoltage protection and supply line
load
The unit does not have its own overvoltage protection.
Measures must be taken by the operator at the supply
end to ensure effective lightning and overvoltage pro-
tection. The mains voltage must not exceed a tolerance
of ±10%.
4.4.3 PE conductor connection
The PE conductor connection must be connected to
the PE conductor system of the overall system.
4.4.4 Electromagnetic compatibility (EMC)
In order to comply with EMC Directive 61000-6-3
(Emission standard for residential, commercial and
light-industrial environments) it may be necessary,
depending on the application, to take the following
interference suppression measures:
◾ Fan type 3245.500 – install an upstream 2 mH, 2.5 A
interference suppression choke.
5
Carrying out the electrical con-
nection
5.1 Connecting the power supply
◾ Complete the electrical connection by following the
wiring plans.
Note:
For technical data, refer to the rating plate.
◾ Remove the red cover from the electrical connection.
Fig. 3:
Access the electrical connection
◾ Insert the connection cable of the mains supply with
wire end ferrules into the screwless spring terminals.
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).
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).
◾ Re-attach the electrical connection
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 3238.5xx to 3239.xxx are released by pulling out
the clip (see fig. 4) of the bayonet connection.
1.
2.
3238.5xx
3239.5xx
Fig. 4:
Release the bayonet connection
Units 3240.xxx, 3241.xxx, 3243.xxx to 3245.xxx are
released by pressing the release button of the bayonet
connection (see fig. 5), located on the opposite corner
from the connection terminal.
