Installation and Operating Instructions
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DANGER
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DANGER
SilentBox® SB EC ... EC Centrifugal Fan Boxes
SB EC 400��
1� Disconnect unit from the power supply and secure it against being switched on again!
2. Loosen the bolts on the hatch (1), 2 pcs Allen M8x20. (View E)
3. Loosen the latch at the hatch edge (2). (View F)
4. Open the cover (3). (View G)
5. Loosen the four screws (4) on the motor bracket. (View H)
6. Loosen the latch (5). (View I)
7. Tilt the bracket (6) for access to the fan wheel. (View J)
View E
View G
View I
5�2
Cleaning
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DANGER!
An insulation/installation fault may result in electric shock!
Before cleaning, isolate the fan from the mains power supply and protect against being switching on again!
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DANGER!
Waiting period of at least 5 minutes!
When using capacitors, there is a danger to life after deactivation due to the direct touching of live parts� Ter-
minal compartment access is only permitted after the power supply is disconnected and a 5 minute waiting
period�
View F
1
VIew H
3
View J
5
7
EN
4
4
6