Operating instructions
W3G800-GV01-91
`
II 2G Ex db eb ib IIB T3 Gb
IBExU14ATEX1123 X /03
`
Translation of the original operating instructions
54001-4-8670
7. MAINTENANCE, MALFUNCTIONS, POSSIBLE
CAUSES AND REMEDIES
Do not perform any repairs on the device. Send it to ebm-papst for repair
or replacement.
During maintenance work on the fan, e.g. when cleaning the fan blades,
the fan must be stationary and its electrical circuit must be interrupted and
secured against being switched on again.
;
Wait until the device comes to a stop.
WARNING
Live terminals and connections even with device
switched off
Electric shock
→ When shutting off the device, note Chapter 5.8 Switching off
the device.
→ 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 mains
failure.
Risk of injury
→ 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.
→ Keep out of the device danger zone.
→ After performing work on the device, remove any tools
used or other objects from the fan air paths.
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
condensation to evaporate and to move the bearings.
;
Carry out inspections and cleaning as appropriate for the Ex marking
so that no dirt deposits form.
Malfunction/fault
Possible cause
Possible remedy
Impeller not
running smoothly
Imbalance in rotating
parts
Clean the device;
replace if imbalance
persists after
cleaning. Make sure
no weight clips are
moved, damaged or
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 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.
Ambient temperature
too high
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.
Impermissible point of
operation (e.g.
excessive load, 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 shorting
Din1 to GND.
Terminal box
fastening screws
broken while closing
Replace device
In the event of further malfunctions, contact ebm-papst.
7.1 Cleaning
NOTE
Damage to the device during cleaning
Malfunction possible
→ Do not clean the device using a water jet or high-pressure
cleaner.
→ Do not use any acid, alkali or solvent-basedcleaning
agents.
→ Do not use any pointed or sharp-edged objects for cleaning
Item no. 54001-5-9970 · ENU · Change 272968 · Approved 2022-11-23 · Page 16 / 17
ebm-papst Mulfingen GmbH & Co. KG · Bachmühle 2 · D-74673 Mulfingen · Phone +49 (0) 7938 81-0 · Fax +49 (0) 7938 81-110 · [email protected] · www.ebmpapst.com