11
EN
Operating and assembly instructions S-LP
www.elektror.com
9016326 01.20/06
1.6 Blowing e
ff
ect
Warning!
The blowing e
ff
ect is very powerful on the ex-
haust side. Sucked in objects may be ejected at
very high speed (danger of injury).
The blowers are designed for delivery of clean
air only. To reliably prevent the sucking-in of
foreign objects or contaminants, which might be
discharged, these objects have to be removed be-
fore entering into the blower by installing a
fi
lter.
Do not reach into the exhaust.
1.7 Temperature
Warning!
The blower housing assumes the temperature of
the conveyed medium during operation. If this
is above +50° C, the blower must be protected
against direct contact by the operator
(risk of burning!).
Warning!
The motor housing heats up during operation. If
the temperature rises above +50 °C, the blower
must be protected by the operating company
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 di
ff
erence can lie within a
range of up to +20°C depending on the model and operating
conditions.
1.8 Motor circuit breaker
Before putting the blower into operation, be sure to safeguard
the drive motor with a motor circuit-breaker (this does not
apply to frequency-converter-operated appliances). Where
appliances are frequency-converter-operated, the existing
temperature sensor (PTC resistor sensor) or temperature
switch (normally closed contact) must be connected to the
converter and evaluated.
1.9 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 noise generated by a blower is not constant throughout
the performance range. For details of noise emission levels,
please refer to the table on page 20.
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 40°C at the drive motor
(this is not permissible).
1.10 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.
1.11 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!
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 in
fl
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.
Maximum frequency (see
rating plate)
Minimum frequency
50 Hz
5 Hz
60 Hz
5 Hz
> 60 Hz
20 Hz
Device with temperature
barrier (independent of the
frequency)
35 Hz
2 INFORMATION ON TRANSPORT,
HANDLNG AND STORAGE OF THE
MACHINE
2.1 Transportation and handling
• Prior to installation and putting into service, check all parts
for transit damage. A damaged blower is a potential safety
hazard and, therefore, should not be put into service.
• Do not store the blower unprotected in the open
(protect against moisture).
• Attach hoist securely. Only use hoists and load
suspension devices with su
ffi
cient load-carrying capacity.
Secure the route of transportation.
