Elektror 2SD series Betriebs- Und Montageanleitung Seite 11

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(danger of injury from impeller!)
1.6 Blowing effect
Warning!
The blowing effect is very powerful on the ex-
haust side. Sucked in objects may be ejected at
very high speed (danger of injury).
The side channel 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 before entering into the side channel
blower by installing a fi lter.
Do not reach into the exhaust.
1.7 Temperature
Warning!
The motor-/ side channel blower housing heats
up during operation. If the temperature rises
above +50°C, the side channel blower must be
protected by the operating company against
direct contact (risk of burning!).
1.8 Motor circuit breaker
Before putting the side channel 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 ex-
isting temperature switch (normally-closed contact) must be
connected to the converter and evaluated.
1.9 Noise emission
The noise generated by a side channel blower is not con-
stant throughout the performance range. For details of radi-
ated noise level, please refer to the table on page 18.
In some cases, sound insulation may be necessary (it is
recommended that emission levels be measured by the
operator). Sound insulation must be provided by the opera-
tor to avoid exceeding the statutory maximum levels at the
workplace and in the immediate vicinity of the side channel
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 side channel blower
is at risk of mechanical damage if the speed is
exceeded. This can cause serious injury or death!
Each component on the side channel blower has unique nat-
ural frequencies. These can be induced by certain side chan-
nel blower speeds, which may result in resonance mode.
The side channel 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
Operating and assembly instructions 1SD, 2SD
speed is changed if the side channel blower is operated on
a frequency converter. These circumstances are also infl u-
enced 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 side channel blower.
Maximum frequency (see
rating plate)
50 Hz
60 Hz
> 60 Hz
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.
2 INFORMATION ON TRANSPORTA-
TION, HANDLING AND STORAGE OF
THE MACHINE
2.1 Transportation and handling
• Before installation and putting into service, check all parts
for transit damage. A damaged side channel blower is a
potential safety hazard and, therefore, should not be put
into service.
• Do not leave the side channel blower unprotected in the
open (protect against ingress of moisture).
• Attach hoist securely. Only use hoists and load suspension
devices with suffi cient load-carrying capacity. Secure the
route of transportation.
Note!
The eye bolt on the motor must not be used to lift
the entire side channel blower. This is unsed if
the motor needs to be (dis-)assembled.
2.2 Storage
• Ensure that the discharge and intake connection is locked
• Store the side channel blower
-> preferably in the original packaging
-> in a closed room
-> dry and free of dust and vibration
• Range of storage temperature: from -20°C to +60°C
• After a storage period of 6 months, the bearings should
be checked before they are mounted in the side channel
Minimum frequency
5 Hz
5 Hz
20 Hz
EN
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