Electrical Hazards - Elektror A-HP Betriebs- Und Montageanleitung

Operating and assembly instructions A-HP
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1.7 Temperature
Warning!
The blower housing assumes the temperature
of the conveyed medium during operation. If the
temperature of the conveyed medium is above
+50°C, the blower must be protected against
direct contact by the operator. Risk of burn injury!
In the case of high-power models in particular, the tempera-
ture of the conveyed medium can increase as it fl ows from
the intake side to the exhaust side. The temperature diff er-
ence can be in the region of up to +20°C, depending on the
operating conditions. This varies from one model to another.
1.8 Motor circuit breaker
Where appliances are frequency-converter-operated, the ex-
isting temperature sensor (PTC resistor sensor) or tempera-
ture switch (normally closed contact) must be connected to
the converter and evaluated.
1.9 Noise emission
Note!
Wear hearing protection during operation at a dai-
ly 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 noise generated by a blower is not constant throughout
the performance range. For details of noise emission levels,
please refer to the table on pages 21.
In some cases, sound insulation may be necessary (it is rec-
ommended that emission levels be measured by the opera-
tor). Sound insulation must be provided by the operator to
avoid exceeding the statutory maximum levels at the work-
place and in the immediate vicinity of the blower.
No sound insulation of any kind whatsoever should cause
the ambient temperature to exceed +40°C at the drive motor
(this is not permissible).
1.10 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 mechani-
cal damage if the speed is exceeded.
This can cause serious injury or death!
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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-
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sent within the speed range of the blower.
Maximum frequency (see
rating plate)
Device with temperature
barrier (independent of the

1.11 Electrical hazards

Danger!
Danger from electric current!
Live components carry current and cause fatal
injuries!
Deactivate the device before opening it, reaching
into it or inserting tools into it; check that compo-
nents are not live and secure it against reactiva-
tion.
1.12 Allowed mounting positions
Note!
Fastening to the fan is only permitted via a fi xed
connection!
Do not use expansion joints as a fi xed connec-
tion!
Note!
Installation positions with a vertical drive shaft
halve the life of the ball bearings.
See „5.1 Ball Bearings" for more information.
Note!
The assembly without foot / console must always
be done with rubber buff ers. Operation without a
rubber buff er on the fan is not permitted!
Minimum frequency
110 Hz
120 Hz
140 Hz
frequency)
EN
50 Hz
50 Hz
50 Hz
50 Hz
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