Operating instructions – ebm-papst W4D500-GM03-10 User Manual

Page 10

Operating instructions

W4D500-GM03-10

Translation of the original operating instructions

5. 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
The motor restarts automatically when operating voltage
is applied, 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.
→ Insert the brought-out thermal overload protector into the

control circuit so that the cooled off motor does not switch on
independently after a fault.

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

Possible remedy

Impeller running
roughly

Imbalance in rotating
parts

Clean the device; if
imbalance is still
evident after
cleaning, replace the
device.
If you have
attached any weight
clips during cleaning,
make sure to
remove them
afterwards.

Motor does not turn

Mechanical blockage

Switch off, de-
energise, and
remove mechanical
blockage.

Mains supply
voltage faulty

Check mains supply
voltage,
restore power
supply.

Faulty connection

De-energise, correct
connection, see
connection diagram.

Thermal overload
protector responded

Allow motor to cool
off, locate and rectify
cause of error, if
necessary cancel
restart lock-out

Unacceptable
operating point

Check operating point

Overtemperature of
motor

Ambient temperature
too high

Lower ambient
temperature if possible

Insufficient cooling

Improve cooling

If you have any other problems, contact ebm-papst.

5.1 Cleaning

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.

5.2 Safety test

What has to
be tested?

How to test?

Frequency

Which
measure?

Check the
protective
casing against
accidental
contact for
damage and to
ensure that it is
intact