Part Number
Operating Instructions
Item no. LS-122.
Revision 002
Release 18/02/2016
Page 11 of 12
ebm-papst A&NZ Pty Ltd
10 Oxford Road · Laverton North VIC 3026 · Phone +61 (03) 9360 6400 · Fax +61 (03) 9360 6464
ABN 33 115 927 556
NSW Phone +61 (02) 9827 6400 · NSW Fax +61 (02) 9827 6464 · NZ Phone +64 (09) 525 0245 · NZ Fax +64 (09) 525 0246
[email protected] · www.ebmpapst.com.au
AF1250-001
AFFB1250-00
6.
MAINTENANCE, MALFUNCTIONS, POSSIBLE CAUSES
AND REMEDIES
Do not perform any repairs on your device. Send the device to
ebm-papst A&NZ 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 devices danger zone. When
working on the device, switch off the line voltage
and ensure that it cannot be switched back on.
→ After working on the device, remove any tools or
other objects from the device.
If the device is out of use for over four months, we
recommend switching it on for at least three hours at
full speed to allow any condensate to evaporate and
to move the bearings.
Malfunction /
fault
Possible cause
Possible remedy
Impeller not
running
smoothly
Imbalance in
rotating parts
Clean the device; replace
it if imbalance persists
after cleaning. Make sure
no weight clips are
removed during cleaning.
Motor not
turning
Mechanical
blockage
Switch off, isolate from
supply and remove
mechanical blockage.
Line voltage
faulty
Check line voltage, restore
power supply.
Attention! The error
message resets
automatically. Device
restarts automatically
without warning.
Faulty
connection
Isolate from supply, correct
connection, see
connection diagram.
Broken motor
winding
Replace device
Deficient cooling Improve cooling. Let the
device cool down.
To reset the error
message, switch off the
line voltage for at least 25
s and 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.
Ambient
temperature too
high
Reduce the ambient
temperature. 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. Alternatively,
reset the error message by
applying a control signal of
<0.5 V to DIN1 or by short
circuiting Din1 to GND.
Impermissible
point of
operation (e.g.
back pressure
too high)
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 short
Din1 to GND.
If you have any other problems, contact ebm-papst
A&NZ