18
EN
Operating and assembly instructions ND ATEX
www.elektror.com
9016324 01.20/09
Note!
The eye bolt on the motor must not be used to lift
the entire blower. This is used if the motor needs
to be (dis)assembled.
2.2 Storage
• Ensure that the air intake connection and pressure connec-
tion are closed.
• Store the blower
-> in its original packaging if possible
-> in a closed room
-> in a dry, dust-free and vibration-free area.
• Storage temperature range from -20°C to +60°C
• After a storage period of 6 months, the blower bearings
and/or motor bearings should be checked before they are
mounted in the blower.
3 INFORMATION ON COMMISSIONING
THE MACHINE
3.1 Basic information
• Prior to the
fi
rst start-up and before any other start-up, the
proper operating status of the unit must be inspected.
Units that, for example, are found to be defective upon
delivery or during installation must not be operated.
• Set-up, installation, operation and maintenance must only
be performed by properly trained and quali
fi
ed specialists.
Operation following incorrect installation, maintenance or
unapproved replacement of components constitutes non-
designated use and renders the warranty void. The resul-
tant risk shall be borne solely by the customer or owner.
Note!
Reliable protection against incursion by foreign
matter, rust, airborne rust and other iron oxides is
provided.
3.2 Installation and assembly
• During set-up, installation and subsequent operation,
never expose the equipment to vibratory or impact loads.
• Cover the open intake and/or a discharge side connection
with wire guards compliant with DIN EN ISO 13857.
Measurement at the
fl
ange bearing shield, preferably
near the bearing
= Measuring point
= Measuring
direction
Maximum permissible vibration speed
(Limit values according to ISO 14694:2003 (E),
category BV-3)
Rigidly mounted
[mm/s]
Flexibly mounted
[mm/s]
E
ff
ective value
[r.m.s.]
E
ff
ective value
[r.m.s.]
At installation
Start-up
4,5
6,3
Alarm
7,1
11,8
Shut-down
9,0
12,5
3.3 Electrical connection
Note!
The work described in this section may only be
performed by a quali
fi
ed electrician. The dimen-
sioning and selection of connecting lines, includ-
ing the connection of the motor, must be made
according to the circuit diagram in the junction
box and the relevant local regulations.
• Design of the electrical installations in accordance
with EN 60079-14.
• Complete equipotential bonding must be achieved; i.e.
su
ffi
cient and proper earthing of all electrically conducting
parts.
• Check that the mains voltage matches the speci
fi
cation
on the nameplate.
• The drive motors used are exclusively explosion-protected
three-phase current motors.
• The safety earth terminal can be found in the terminal box.
• The additional content from the motor and frequency con-
verter manufacturer must be observed and can be
obtained from the supplier documentation.
3.3.1 Special features when operating ATEX blowers at
the frequency converter
Note!
Only motors with pressure-proof encapsulation
must be operated at the frequency converter,
marked Ex db eb II2GD T4 135 °C!
Maximum frequency (see
rating plate)
Minimum frequency
50 Hz
5 Hz
60 Hz
5 Hz
> 60 Hz
20 Hz
A direct evaluation of the PTC-resistor sensor by the fre-
quency converter is not usually permissible in ATEX applica-
tions (in this regard, please refer to the speci
fi
cations of the
converter manufacturer!).
Note!
For operation of the drive motor with a frequency
converter, the following points should also be
noted:
• Only motors marked Ex db eb motor „frequency
converter compatible“ must be used at the fre-
quency converter.
• Unless expressly stated by the motor manufac-
turer, the converter supply voltage must not ex-
ceed 400 V and the cable length must not exceed
20 m. For longer cable lengths, higher supply
voltages and/or special EMC requirements, suit-
able additional measures may be necessary. In
this case, please contact the converter supplier. If
additional
fi
lter components are required, ensure
that su
ffi
cient space is reserved in the control
cabinet.
• The connection cables must be kept short and
laid without interim terminal points and without
