ebm-papst W4E450-CO09-01 - Manual (Page 9)

Operating instructions W4E450-CO09-01
Translation of the original operating instructions
4.5 Opening of second screwed cable gland
It is possible to make a second screw hole in the terminal box.
WARNING
In event of a fault, the screwed cable gland is under
electrical voltage
Electric shock
→ Do not use metal cable glands for plastic terminal
boxes.
; Screw the cable gland into the pre-cut thread using a screwdriver.
When doing so, note the tightening torques, see chapter 3.1 Product
drawing.
; Remove the plastic tab that falls off when the wire is pressed through
into the terminal box.
Ill. 4: Screwed cable gland opening
4.6 Checking the connections
; Make sure that the power is off (all phases).
; Secure it from being switched on again.
; Check the correct fit of the connection lines.
; Screw the terminal box cover closed again. Terminal box tightening
torque, see chapter 3.1 Product drawing.
; Make sure that the terminal box is correctly closed and sealed and
that all screws and screwed cable glands are properly tightened.
4.7 Switch on device
WARNING
Hot motor housing
Fire hazard
→ Ensure that no combustible or flammable materials are
located close to the fan.
; Inspect the device for visible external damage and the proper function
of the protective features before switching it on.
; Check the air flow paths of the fan for foreign objects and remove any
that are found.
; Apply the nominal voltage to the voltage supply.
4.8 Switching off the device
; Disconnect the device from the supply voltage at the main switch for
the supply line.
; When disconnecting, be sure to disconnect the earth wire connection
last.
5. MAINTENANCE, MALFUNCTIONS, POSSIBLE
CAUSES AND REMEDIES
The motor is sealed by ebm-papst. Changes or repairs may be carried
out by ebm-papst only.
The terminal box does not have to be opened for maintenance.
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
Electrical load on the capacitor after device is switched off
Electric shock, risk of injury
→ Discharge the capacitors before working on 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.
Item no. 11673-5-9970 · Revision 73287 · Release 2011-05-09 · Page 9 / 10
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