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R3G280-BC01-N1
6. MAINTENANCE, MALFUNCTIONS, POSSIBLE
CAUSES AND REMEDIES
Do not perform any repairs on your device. Send the device to ebm-
papst for repair or replacement.
WARNING
Live terminals and connections even with device
switched off
Electric shock
→ Wait five minutes after disconnecting the voltage at all poles
before opening the device.
CAUTION
If control voltage or a stored speed set value is applied,
the motor will restart automatically, e.g. after a power
failure.
Risk of injury
→ Keep out of the device's danger zone.
→ When working on the device, switch off the line voltage
and ensure that it cannot be switched back on.
→ Wait until the device comes to a stop.
→ After working on the device, remove any tools or other
objects from the device.
NOTE
If the device is not operated for a lengthy period in installed
condition in a dry environment, it is to be started up and
operated at full speed for one hour at least every four months. If
the device is not operated for a lengthy period in installed
condition in a damp environment (e.g. outdoors), it is to be
started up and operated at full speed for at least two hours once
a month to move the bearings and allow any condensate that
may have ingressed to evaporate.
Malfunction/fault
Possible cause
Impeller not
Imbalance in rotating
running smoothly
parts
Motor not turning
Mechanical blockage
Line voltage faulty
Faulty connection
Broken motor winding Replace device
Item no. 55468-5-9970 · ENU · Change 257059 · Approved 2023-02-03 · Page 11 / 13
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
Possible remedy
Clean the device;
replace it if imbalance
persists after cleaning.
Make sure no
weight clips are
removed during
cleaning.
Switch off, isolate
from supply and
remove mechanical
blockage.
Check line voltage,
restore power supply.
Attention! The error
message resets
6.1 Cleaning
automatically.
Device restarts
To ensure a long service life, check the fans regularly for proper
automatically without
operation and soiling. The frequency of checking is to be adapted
warning.
accordingly depending on the degree of soiling.
Isolate from supply,
correct connection;
see connection
diagram.
; Dirt deposits on the motor housing can cause overheating of the motor.
Thermal overload
protector activated
Deficient cooling
Ambient temperature
too high
Impermissible point of
operation (e.g. back
pressure too high)
In the event of further malfunctions, contact ebm-papst.
DANGER
Risk of injury from rotating fan.
→ Only clean when not in motion. Do not disconnect the fan
from the power supply, just switch it off via the control input.
This will prevent start-up of the fan.
Allow motor to cool
off, locate and rectify
cause of error,
release restart lockout
if necessary
Improve cooling. Let
the device cool down.
To reset the error
message, switch off
the line voltage for at
least 25 s and then
switch it on again.
Alternatively, reset
the error message by
applying a control
signal of < 0.5 V to
Din1 or by shorting
Din1 to GND.
Reduce the ambient
temperature. Let the
device cool down.
To reset the error
message, switch off
the line voltage for at
least 25 s and then
switch it on again.
Alternatively, reset
the error message by
applying a control
signal of < 0.5 V to
Din1 or by shorting
Din1 to GND.
Correct the operating
point. Let the device
cool down.
To reset the error
message, switch off
the line voltage for at
least 25 s and then
switch it on again.
Alternatively, reset
the error message by
applying a control
signal of < 0.5 V to
Din1 or by shorting
Din1 to GND.
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