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G1G126-AB13-53
4.5 Checking the connections
; Make sure that the power is off (all phases).
; Secure it from being switched on again.
; Check the correct fit of the connection lines.
4.6 Switch on device
The device may only be switched on if it has been installed properly and
in accordance with its intended use, including the required safety
mechanisms and professional electrical connection. This also applies for
devices which have already been equipped with plugs and terminals or
similar connectors by the customer.
WARNING
Hot motor housing
Fire hazard
→ Ensure that no combustible or flammable materials are
located close to the blower.
; Inspect the device for visible external damage and the proper function
of the protective features before switching it on.
; Check the air flow paths of the fan for foreign objects and remove any
that are found.
; Apply 0 VDC to the 0-10 V control input (if you are using the control
input)
; Apply 0 % PWM to the PWM control input (if you are using the
PWM control input)
; Apply the nominal voltage to the voltage supply.
; Start the device by changing the input signal.
4.7 Switching off the device
Switching off the device during operation:
; Switch off the device via the control input.
; Do not switch the motor (e.g. in cyclic operation) on and off via power
supply.
Switching off the device for maintenance work:
; Switch off the device via the control input.
; Do not switch the motor (e.g. in cyclic operation) on and off via power
supply.
; Disconnect the device from the supply voltage.
Item no. 53368-5-9970 · Revision 81735 · Release 2014-01-29 · Page 8 / 9
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
Operating instructions
5. MAINTENANCE, MALFUNCTIONS, POSSIBLE
CAUSES AND REMEDIES
Do not perform any repairs on your device. Return the device to ebm-
papst for repair or replacement.
Malfunction/error
Impeller running
roughly
Motor does not turn
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
If the control signal of a blower that is connected to the
power system is removed, the motor can restart
automatically.
Danger of injury
→ When working on the blower, switch off the mains supply
voltage and secure it from being switched on again.
→ Wait until the device stops.
CAUTION
Electrical load after device is switched off
Electric shock in case of contact
→ Wait for five minutes after disconnecting the voltage at all
poles before touching the unit.
CAUTION
If control voltage is applied or a speed setpoint is stored,
the motor automatically restarts, e.g. after a power failure.
Danger of injury
→ Keep out of the danger zone of the device.
→ When working on the device, switch off the mains
supply voltage and secure the latter from being switched on
again.
→ Wait until the device stops.
→ After working on the device, remove any used tools or
other objects from the device.
If the blower remains out of use for some time, e.g. when in
storage, we recommend switching the blower on for at least 2
hours to allow any condensate to evaporate and to move the
bearings.
Possible cause
Imbalance in rotating
parts
Mechanical blockage
Possible remedy
Clean the device; if
imbalance is still
evident after
cleaning, replace the
device.
If you have
attached any weight
clips during cleaning,
make sure to
remove them
afterwards.
Switch off, de-
energise, and
remove mechanical
blockage.
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