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Operating and assembly instructions S-MP ATEX
1.6 Weight and stability
There are hazards resulting from slipping or falling over dur-
ing transportation and installation. See 2.1 – Transport and
Handling as well as 3.2 – Assembly, Installation.
1.7 Suction eff ect
1
Warning!
Risk of injury due to suction eff ect!
Objects, clothing and hair can be sucked in at the
intake port.
The operator is required to wear a hairnet and
tight-fi tting clothing.
Do not stay near the suction opening during
operation!
1.8 Blowing eff ect
2
Warning!
Risk of injury due to strong blow-out eff ect of the
medium and ejected parts!
Impurities, debris and impermissible media may
cause objects to be thrown out of the fan outlet at
high speed!
Make sure that the fan delivers only clean air!
1
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-
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2
.
E
/I
than the heat-up
A
N
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.
1.11 Noise emission
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.
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
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.
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 connection.
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
the directive; for example, the directive requires that the risks
etc. be described in an explosion protection document.
The measures to be taken in the case of an ignition/ex-
plosion or any other serious incident are as follows:
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
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