Centre Of Gravity Position; Recommended Tightening Torques For Mounting Screws; Electrical Connection; 3.10 Commissioning - Helios AMD Série Notice De Montage Et D'utilisation

Installation and Operating Instructions
EN
ATTENTION
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DANGER
ATTENTION
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WARNING
nmr
ATTENTION
AMD – Medium-pressure axial fans
3.7

Centre of gravity position

A motor protrusion arises depending on the size and motor power and thus an unbalanced centre of gravity outside of
the casing. An extension duct (Type VR..) must be used (Fig.14) to determine the centre of gravity. The weight infor-
mation for the respective types can be found on the type plate!
CORRECT!
STS
3.8 Recommended tightening torque for mounting screws
The following tightening torques for connection of mounting nuts and screws (grade 8.8) are to be used:
The impeller mounting on the motor shaft is secured against loosening at the factory with liquid screw securer.
Screw size
M8
M10
M12
M16
3.9

Electrical connection

m DANGER
Before any maintenance or installation work or before opening the terminal compartment, the device is to be
fully isolated from the power supply and secured against unintended restart!
– The electrical connection must be carried out only by a qualified electrician in accordance with the data in the termi-
nal box and enclosed wiring diagrams.
– The relevant standards, safety regulations (e.g. DIN VDE 0100) and the technical connection conditions of the local
electricity supply companies must be observed.
– Connection data must comply with the information on the motor rating plate.
– The introduction of the supply line must be carried out professionally! The connection line in the casing terminal box
must compensate for the potential fan vibrations, particularly when using vibration dampers. Never lay the lines
over sharp corners!
– Security components, e.g. safety grille may not be dismantled, bypassed or disabled.
– Further operations see the following section "Commissioning".
– Ground connections, including any supplementary equipotential bonding must be properly installed!

3.10 Commissioning

m WARNING
The rotating impeller can crush fingers.
Ensure protection against contact before commissioning!
The following inspection work must be carried out or tested before the initial commissioning:
– The transport safety device must be removed before the functional test!
– Check for operation according to the intended purpose of the fan
– Permissible air flow temperature
– Compare power supply voltage with data on the rating plate
– Check fan for solid fastening and professional electrical installation
– Check all parts especially screws, nuts and safety grille for tight fit. Without loosening screws!
– Unhindered running of impeller
– Check minimum air gap according to table in section 3.5 on page 9
– Ensure that the intake and outlet areas cannot be accessed.
– Compliance of direction of rotation and airflow direction. Check direction of rotation of impeller; by short-time acti-
vation; wear protective glasses when checking the direction of rotation!
– Compare current consumption with rating plate
– Test functionality of motor protection device (information on bridging in case of fire must be observed)
– Check protective conductor terminal
– Check sealing of connection cable in the terminal box and fixed clamping of wires
– Commissioning may only take place if protection against accidental contact is ensured
– Check sealing of all connections (if necessary)
– Remove assembly residues from fan and duct
– Check fan for inadmissible vibrations and noises during test run
STS
(centre of gravity)
Tightening torque
20 Nm
35 Nm
60 Nm
150 Nm
10
INCORRECT!
STS
STS
(centre of gravity)
Tightening torque VERBUS RIPP
25 Nm
49 Nm
86 Nm
210 Nm
Fig.14