Operating instructions
K3G450-AQ24-01
Translation of the original operating instructions
WARNING
Terminals and connections have voltage even with a
unit that is shut off
Electric shock
→ Wait five minutes after disconnecting the voltage at all poles
before opening the device.
CAUTION
In the event of failure, there is electric voltage at the
rotor and impeller
The rotor and impeller are base insulated.
→ Do not touch the rotor and impeller once they are installed.
CAUTION
If control voltage is applied or a speed setpoint is stored,
the motor will restart automatically, e.g. after a mains
failure.
Risk of injury
→ Keep out of the device hazard zone.
→ When working on the device, switch off the mains power
and ensure that it cannot be switched back on.
→ Wait until the device stops.
→ After working on the device, remove any tools used or
other objects from the device.
1.5 Safety and protective functions
DANGER
Guard missing and guard not functioning
Without a guard there is a risk of serious injury, for instance
when reaching into the device during operation. Loose parts or
items of clothing could be drawn in.
→ The device is a built-in component. As the operator, you are
responsible for ensuring that the device is secured
adequately.# Operate the device only with a fixed protective
device and guard grille.
→ Stop the device immediately if a protective device is
found to be missing or ineffective.
1.6 Electromagnetic radiation
Interference from electromagnetic radiation is possible, e.g. in conjunction
with open and closed-loop control devices.
If unacceptable emission intensities occur when the fan is installed,
appropriate shielding measures have to be taken by the user.
NOTE
Electrical or electromagnetic interferences after
integrating the device in installations on the customer's
side.
→ Verify that the entire setup is EMC compliant.
1.7 Mechanical movement
DANGER
Rotating device
Body parts that come into contact with the rotor and impeller
can be injured.
→ Secure the device against accidental contact.
→ Before working on the system/machine, wait until all
parts have come to a standstill.
DANGER
Flying parts
Missing safety devices may cause balancing weights or
broken fan blades to be ejected at high speeds, causing bodily
harm.
→ Take appropriate safety measures.
WARNING
Rotating device
Long hair, dangling items of clothing, jewellery and similar items
can become entangled and be pulled into the device. Risk of
injury.
→ Do not wear any loose-fitting or dangling clothing or jewellery
while working on rotating parts.
→ Protect long hair with a cap.
1.8 Emission
WARNING
Depending on the installation and operating conditions,
a sound pressure level greater than 70 dB(A) may arise.
Danger of noise-induced hearing loss
→ Take appropriate technical safety measures.
→ Protect operating personnel with appropriate safety
equipment, e.g. hearing protection.
→ Also observe the requirements of local agencies.
1.9 Hot surface
CAUTION
High temperature at the electronics housing
Risk of burns
→ Ensure sufficient contact protection.
1.10 Transport
WARNING
Transportation of fan
Injuries from tipping or slipping
→ Always transport the fan carefully and only in its original
packaging.
→ Impact arising from setting down too hard or at an angle
can cause bearing damage or deformation at the frame and
impeller.
→ The fans must always be transported and handled such
that they cannot tip over.
→ Secure the fan(s) with a lashing strip for example so that
nothing can slip or tip up, particularly when stacking several
fans.
→ Also make allowance for possible wind forces.
1.11 Storage
;
Store the device, partially or fully assembled, in the original
packaging in a clean, dry and weatherproof place free of vibrations.
;
Protect the device against environmental effects and dirt until final
installation.
;
We recommend storing the device for no longer than one year in
order to guarantee trouble-free operation and longest possible service
life.
Item no. 50638-5-9970 · ENG · Revision 209539 · Release 2021-02-12 · Page 2 / 15
ebm-papst Mulfingen GmbH & Co. KG · Bachmühle 2 · D-74673 Mulfingen · Phone +49 (0) 7938 81-0 · Fax +49 (0) 7938 81-110 · info1@de.ebmpapst.com · www.ebmpapst.com
