Table of Contents
Advertisement
K3G280-RR03-H4
Siemens AG PD LD Nbg.
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.
If the device is out of use for some time, e.g. when in storage,
we recommend switching it on for at least two hours to allow
any condensation to evaporate and to move the bearings.
Malfunction/fault
Possible cause
Impeller not
Imbalance in rotating
running smoothly
parts
Motor not turning
Mechanical blockage
Line voltage faulty
Faulty connection
Thermal overload
protector activated
Motor/electronics
Deficient cooling
overtemperature
Item no. 55768-5-9970 · ENU · Change 94605 · Approved 2017-09-29 · Page 11 / 12
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
6.1 Vibration testing
Checking of fan for mechanical vibration based on ISO 14694.
Recommendation: Every 6 months. Max. vibration severity is 3.5 mm/
s, measured at the motor fastening diameter on the motor support plate in
the direction of the motor axis of rotation and perpendicular to this.
Possible remedy
Clean the device;
replace it if imbalance
persists after cleaning.
Make sure no
weight clips are
Fig. 1: Example illustrating vibration measurement. The arrangement of
removed during
the sensors depends on the device concerned and the installation
cleaning.
Switch off, isolate
situation.
from supply and
6.2 Cleaning
remove mechanical
blockage.
Check line voltage,
restore power
supply, apply control
signal.
Isolate from supply,
correct connection;
see connection
diagram.
6.3 Safety inspection
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
What to check
least 25 s and then
Contact
switch it on again.
protection
cover for
intactness or
damage
Ambient temperature
too high
Impermissible point of
operation
In the event of further malfunctions, contact ebm-papst.
NOTE
Damage to the device during cleaning
Malfunction possible
→ Do not clean the device using a high-pressure cleaner.
→ Do not use acid, alkali or solvent-based cleaning agents.
→ Do not use any pointed or sharp-edged objects for cleaning
NOTE
High-voltage test
The integrated EMC filter has Y capacitors. The tripping current
is exceeded when AC testing voltage is applied.
→ Test the device with DC voltage when you perform the
legally required high-voltage test. The voltage to be used
corresponds to the peak value of the AC voltage required by
the standard.
How to check
How often
Visual inspection At least every
6 months
Reduce the ambient
temperature.
Reset by reducing
control input to 0.
Correct the operating
point. Let the device
cool down.
What action?
Repair or
replacement of
device
219
Advertisement
Table of Contents
