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R3G250-AL54-01
6. MAINTENANCE, MALFUNCTIONS, POSSIBLE
CAUSES AND REMEDIES
Do not perform any repairs on your device. Return the device to ebm-
papst for repair or replacement.
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 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 device remains out of use for some time, e.g. when in
storage, we recommend switching the device on for at least
two hours to allow any condensate to evaporate and to move
the bearings.
Malfunction/error
Possible cause
Impeller running
Imbalance in rotating
roughly
parts
Motor does not turn
Mechanical blockage
Mains supply
voltage faulty
Faulty connection
Thermal overload
protector responded
Item no. 50071-5-9970 · Revision - · Release 2011-02-25 · Page 9 / 10
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
Overtemperature of
electronics/motor
6.1 Cleaning
Possible remedy
Clean the device; if
imbalance is still
6.2 Safety test
evident after
cleaning, replace the
device.
If you have
attached any weight
clips during cleaning,
make sure to
remove them
afterwards.
Switch off, de-
What has to
energise, and
be tested?
remove mechanical
Check the
blockage.
protective
Check mains supply
casing against
voltage,
accidental
restore power
contact for
supply,
damage and to
apply control signal.
ensure that it is
De-energise, correct
intact
connection, see
Check the
connection diagram.
device for
Allow motor to cool
damage to
off, locate and rectify
blades and
cause of error, if
housing
necessary cancel
Mounting the
restart lock-out
connection lines
Insufficient cooling
Ambient temperature
too high
Unacceptable
operating point
If you have any other problems, contact ebm-papst.
NOTE
Damage to the device during cleaning.
Malfunction possible
→ Do not clean the device using a water jet or high-pressure
washer.
→ Do not use any cleaners containing acids,
bases or solvents.
→ Do not use any pointed or sharp-edged objects to clean.
NOTE
High-voltage test
The integrated EMC filter contains Y capacitors. Therefore, the
trigger current is exceeded when AC testing voltage is applied.
→ Test the device with DC voltage when you carry out the
high-voltage test required by law. The voltage to be used
corresponds to the peak value of the AC voltage required by
the standard.
How to test?
Frequency
Visual inspection At least every
6 months
Visual inspection At least every
6 months
Visual inspection At least every
6 months
Improve cooling. Let
the device cool
down.
To reset the error
message, switch off
the mains supply
voltage for a min. of
25 s and switch it on
again.
Reduce the ambient
temperature.
Reset by reducing
control input to 0.
Correct the operating
point. Let the device
cool down.
Which
measure?
Repair or
replacement of
the device
Replacement
of the device
Fasten
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