Electrical connection
WARNING — Risk of electric shock
- Observe the safety rules of electrical engineering. Before taking off covers and before installing the electrics, shut down all supply circuits, switch off mains fuse, check that no voltage is present, secure against being accidentally switched back on and position a visible warning sign.
- Observe the applicable regulations for electrical installations, e.g. DIN EN 50110-1 and DIN EN 60204-1, in Germany in particular VDE 0100 with the corresponding parts → In case of non-observance danger due to electric shock, fire or short circuit.
- Do not switch on the centrifugal blower until it is completely installed. Do not commission a damaged unit. Prevent from being switched back on until fully repaired.
- Only connect the centrifugal blower according to the circuit diagram/wiring diagram. A fixed electrical installation is mandatory. Note the voltage and frequency stated on the rating plate. Use a mains isolation device with contact openings of at least 3 mm at each pole. Avoid contact with components (damage due to static charge).
- Use cables of type NYM-O or NYM-J, with 3 x 1.5 mm² or 5 x 1.5 mm², suitable for the unit type. For permissible cable types, see chapter Technical data of the installation and operating instructions or on the Internet at www.maico-ventilatoren.com.
- Perform a function test after completing maintenance and repair work.
- The degree of protection specified on the rating plate is only valid if the unit is installed as intended, in a horizontal installation position and if the connection cable is properly guided into the terminal box.
- The terminal box cover must be properly fitted so that the surrounding seal is tight against the terminal box all the way around.
- With protection class I, connect the PE conductor and check the connection.
- Check protective-conductor continuity on housing.
- Proceed with caution in the event of a malfunction. The centrifugal blower may be energized even when at a standstill and may switch on automatically due to sensors (time delay, humidity etc.). Maintenance and fault finding only permissible when carried out by qualified electricians.