Connection And Start-Up; Connecting The Mechanical System; Connecting The Electrical System - Ebmpapst W3G990-GZ02-91 Operating Instructions Manual

W3G990-GZ02-91
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II 2G Ex d e ib IIB T3 Gb
IBExU14ATEX1123 X /05

5. CONNECTION AND START-UP

Before commencing work, take the measures specified in your risk
assessment, for the protection of employees.
In addition to the generally valid installation requirements for electrical
low-voltage equipment, the special requirements for setting up electrical
installations in the potentially explosive area must be observed.

5.1 Connecting the mechanical system

DANGER
Insufficient earthing
Electric shock
→ The fan must be earthed in the motor terminal box. The
earthing points on the wall ring or electronics housing are no
substitute for protective earthing in the terminal box (only for
dissipation of static electricity).
CAUTION
Cutting and crushing hazard when removing the device
from the packaging
Blades can be bent
→ Carefully remove the device from its packaging, only
touching the wall ring. Make sure to avoid any shock.
→ Wear safety shoes and cut-resistant safety gloves.
CAUTION
Heavy load when taking out the device
Bodily harm, e.g. back injuries, are possible.
→ Two people should remove the device out of its packaging
together.
NOTE
Imbalance
Reduced service life of the device
→ Do not hold or transport the device by the blades.
Use cloth cable loops, for example, to move the device
using a crane.
→ After installation, ensure that the impeller can move
easily and the blades of the impeller are not deformed or bent
and do not scrape anywhere.
NOTE
Mounting peripheral components
→ When mounting peripheral components or similar
attachments, make sure you use a suitable material (in terms
of contact points or contact surfaces) between rotating and
stationary parts.
→ When mounting such parts, you, the system
manufacturer, are responsible for maintaining the safety
distance in accordance with EN 14986, for example
between the impeller and housing.
NOTE
Shortened service life due to extreme loads
Examples of extreme loads include the effects of moisture,
corrosive chemical substances and vibrations. Examples of
extreme climatic stressing include extreme heat or cold or high
humidity.
→ Avoid extreme loads.
; Check the device for transport damage. Damaged devices must no
longer be installed.
; Install the undamaged device according to your application.
Item no. 54008-5-9970 · ENG · Revision 87791 · Release 2016-04-29 · Page 8 / 16
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
; The system must not transmit any forces into the device which would
cause strain and affect the gaps.
; During installation, make sure not to bend or pry the device in order to
avoid mechanical tension.
; Verify that all rotating parts can move freely. The device must be
installed such that the shaft is horizontal or vertical with the rotor facing
downwards.
; During installation, ensure that the direction of rotation of the device is
correct.
; Use suitable fastening hardware for the installation.
; Remove any objects that are located in the exhaust zone of the fan or
near the fan blades.
; After installation, ensure that the screws are tightened.
; The device must not be subjected to impermissibly high vibration from
the system (vibration measurement as per chapter 7.4 Vibration
check is required on start-up and as part of regular maintenance).
5.1.1 Gap dimension
; Prior to start-up of the device and routine checking in accordance with
chapter 7.3 Maintenance interval, always check the gap between the
wall ring and all fan blades at every position on the wall ring as
specified

5.2 Connecting the electrical system

If multiple ebm-papst fans are installed in one system, please
allocate serial numbers to the project and write them down so
that in the even of a potential defect, accurate information can be
provided about the range of devices affected.
Radial gap dimension
The gap dimension between the blade and the wall ring is set
by ebm-papst and is at least 1% of the impeller diameter (see
chapter 4.1 Product drawing). If the connecting screws from the
motor to the support bracket/guard grille and/or from the support
bracket/guard grille to the wall ring have been loosened, check
the gaps and readjust them if necessary.
Axial gap dimension
The clearance between the blade and the customer unit must be
at least 1% of the impeller diameter; see chapter 4.1 Product
drawing.
→ Be sure to maintain this clearance during installation. For
aerodynamic reasons, we recommend selecting a greater
clearance than the specified minimum clearance.
DANGER
Electric voltage on the device
Electric shock
→ Always install a protective earth first.
→ Check the protective earth.
DANGER
Explosion hazard
→ To dissipate electrostatic charges, the fan must be earthed
via the earthing point on the wall ring.# Operation of the fan
without earthing to dissipate electrostatic charges is not
permitted.
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