Elektror RD-F Montageanleitung Und Bedienungsanleitung Seite 11

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nection on the intake port, a line of a minimum
length of 1m must be mounted to prevent contact.
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 blower must never be operated with open
discharge connection and therefore a line with a
minimum length of 1m must be mounted.
Do not reach into the exhaust.
1.7 Guard, protection against reaching in
Warning!
If the unit is used indirectly as a pressure or suc-
tion conveyor only (i.e. there is no line connected
to either the intake or discharge port), it must be
fi tted with a guard in compliance with DIN EN ISO
13857. This guard must be ordered as additional
equipment.
1.8 Safety instructions for cleaning and maintenance
Warning!
Cleaning and maintenance/repair work must be
started only after the impeller has come to a com-
plete standstill. Electrical On/Off switches that are
used as maintenance or repair switches must be
equipped with locks or it must be guaranteed by
their position that unauthorized switching on is
impossible during cleaning or repair work.
The impeller must have come to a complete
standstill before the unit is opened. It must be
ensured during cleaning, maintenance or repair
work that the unit cannot be powered up and is
secured against restarting / unintentional start.
1.9 Temperature
Warning!
The blower housing assumes the temperature
of the conveyed medium during operation. If the
temperature of the medium is above 50°C the
owner must protect the blower against direct
touching (danger of burns!).
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 differ-
ence can be in the region of up to +20°C, depending on the
operating conditions. This varies from one model to another.
1.10 Motor circuit breaker
Before commissioning the blower a motor overload switch
must be installed for the drive motor (not applicable to units
powered by a frequency converter). In units powered by a
frequency converter the existing temperature sensor (PTC-
sensor) oder temperature switch (normally closed contact) is
to be connected to and monitored by the converter.
Operating and assembly instructions RDF
1.11 Noise emission
The noise generated by a blower is not constant throughout
the performance range. For details of noise emission levels
refer to the table on page 20 and 21.
In some cases, sound insulation may be necessary (it is rec-
ommended that emission levels be measured by the opera-
tor).
No sound insulation of any kind whatsoever should cause
the ambient temperature to exceed +40°C at the drive motor
(this is not permissible).
1.12 Electrical hazards
Before carrying out any electrical work the unit must be
switched off and secured against switching back on. Check
that no voltage is present.
1.13 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 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.
A minimum rotary frequency of 5 Hz should be ensured with
devices suitable for operation with a frequency converter (50
/ 60 Hz) and a minimum frequency of 35 Hz with fast rotat-
ing frequency converter devices (> 60 Hz) depending on the
frequency converter type.
2 INFORMATION ON TRANSPORTATION
AND HANDLING OF THE MACHINE
2.1 Transportation and handling
• Check all parts for shipping damage before installation and
commissioning. A damaged blower is a potential safety
hazard and, therefore, should not be put into service.
• Do not leave the blower unprotected in the open
(protect against ingress of moisture).
• Attach hoist securely. Only use hoists and load suspen-
sion devices with suffi cient load-carrying capacity. Secure
the route of transportation.
EN
11