Information On Transport, Handlng And Storage Of The Machine - Elektror S-LP series Betriebs- Und Montageanleitung

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(Risk of injury from the impeller!).
1.8 Blowing eff ect
Warning!
The blowing eff ect is very powerful on the ex-
haust side. Sucked in objects may be ejected at
very high speed (danger of injury).
Blowers are suitable exclusively for conveying
clean air or pure gaseous gas-air mixtures. To re-
liably prevent the sucking-in of foreign objects or
contaminants, which might be discharged, these
objects have to be removed before entering into
the blower by installing a fi lter.
Do not reach into the exhaust.
1.9 Temperature
Warning!
The motor-/blower housing can take on the tem-
perature of the medium to be conveyed during
operation. If this is above +50°C, the owner must
protect the blower against direct contact (risk of
burning!).
There can be an increase in the temperature of the medium
to be conveyed, particularly with higher pressure models,
when conveying the medium from the air intake side to the
discharge side. This temperature diff erence can lie within a
range of up to +20°C depending on the model and operating
conditions.
1.10 Motor Protection Circuit
To prevent inadmissible heat-up from overload, each motor
shall be protected by an ATEX-compatible monitoring device
or motor overload switch. Overload protectors with cut-out
delay depending on the current shall be installed to monitor
the rated current consumption in all conductors and shall be
able to switch off the blocked motor within the heat-up time t
To ensure this, the trip time of the monitoring device needs to
be shorter for the start-up current ratio I
time t for the respective temperature class.
E
The trip time, starting from cold state at an ambient tempera-
ture of +20 °C, is shown in the trip characteristic curve of the
monitoring device. The heat-up time values tE for the indi-
vidual temperature classes as well as the start-up current
ratio I /I are indicated on the nameplate of the motor or an
A N
additional label.
On ATEX units with Ex eb motor, the thermal motor circuit-
breaker with PTC-resistor sensors for direct temperature
monitoring is permissible only in addition to the overload pro-
tection (upon request).
When using units for FU operation with an Ex db eb motor,
it is also essential to observe the information under 3.3.1. to
3.3.4.
Operating and assembly instructions S-LP ATEX
1.11 Noise emission
The noises emitted by the blower are not constant over the
entire output range. Refer to the table on page 25 for the
noise levels emitted.
Sound insulation is required in certain unfavourable cases
(we recommend that the owner takes measurements). The
owner must provide sound insulation so that the maximum
values permitted by law are not exceeded at the workstations
around the blower.
Sound insulation of any kind must not lead to an inadmissible
increase in the ambient temperature on the drive motor to
over max. +40°C.
1.12 Speeds
Each component on the blower has unique natural frequen-
cies. These can be induced by certain blower speeds, which
may result in resonance mode.
The blowers are designed in such a way that resonance does
not generally occur at a constant operating speed.
This may be induced in certain circumstances when the
speed is changed if the blower is operated on a frequency
converter. These circumstances are also infl uenced by the
customer's individual installation situation or ventilation con-
nection.
These natural frequencies must be excluded by parametris-
ing the frequency converter accordingly should they be pre-
sent within the speed range of the blower.
1.13 Obligations of the owner
The owner of an installation or machine is required to oper-
ate the equipment in accordance with EC directive 99/92/EC
(ATEX 137) and the applicable national regulations enforcing
.
E
the directive; for example, the directive requires that the risks
etc. be described in an explosion protection document.
/I than the heat-up
A N
The measures to be taken in the case of an ignition/ex-
plosion or any other serious incident are as follows:
2 INFORMATION ON TRANSPORT,
HANDLNG AND STORAGE OF THE
MACHINE
2.1 Transport and Handling
• Check all parts for transport damage prior to the installation
and start-up. A damaged blower represents an increased
safety risk and therefore must not be put into operation.
Note!
Wear hearing protection during operation at a
daily exposure level of 80 dB(A) and above, and/
or a peak sound pressure level of 135 dB(C) and
above.
Failure to do so may cause hearing damage.
Warning!
The maximum speed stamped on the motor rating
plate must never be exceeded in order to prevent
personal injury.
The blower is at risk of mechanical damage if the
speed is exceeded.
Note!
If a fi re, defl agration or explosion has occurred
in the vicinity of or inside the unit, then the unit
must not be operated further regardless of the
cause of the explosion. In this case, as in the
event of other serious incidents, the equipment
must be made accessible / sent to Elektror for
immediate examination.
EN
17