Operating instructions
G3G250-MW50-01
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
Protective device missing and protective device not
functioning
Without a protective device there is a risk of serious injury, for
instance if the hands reach or are sucked into the device during
operation.
→ Operate the device only with a fixed protective device and
guard grille.
→ The fixed protective device must be able to withstand the
kinetic energy of a fan blade that becomes detached at
maximum speed. There must not be any gaps which it is
possible to reach into with the fingers, for example.
→ The device is a built-in component. As the operator, you
are responsible for ensuring that the device is secured
adequately.
→ 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
Danger of injury from open blower
Gas escapes. When the blower is open, you come into contact
with rotating and electrically live parts. Escaping gas may also
cause explosions.
→ Never open the blower.
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.
WARNING
Flying parts
Missing safety devices may cause fan blades to be ejected at
high speeds, causing bodily harm.
→ Take appropriate safety measures.
The safety devices must prevent contact with rotating parts
and the printed circuit board.
1.8 Deflagration
DANGER
Gas escapes through leaky housing after deflagration
Danger of injury
→ After a deflagration, check that the housing of the gas blower
is tightly sealed.
→ Replace any gas blower with a leaky housing.
DANGER
Fire and deflagration hazard
The gas blower is not approved according to Ex protection
guidelines. Rotating parts can scrape against stationary parts.
This may cause sparks and chips. The surface temperature
may rise, resulting in a fire.
→ Check which hazards arise from installing, operating,
servicing or disposing the gas blower in conjunction with
your device.
Prevent these hazards.
Carry out all appropriate measures to this purpose.
Item no. 50734-5-9970 · ENG · Revision 202174 · Release 2018-12-28 · 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 · [email protected] · www.ebmpapst.com
