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K3G500-AP25-90
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II 2G Ex d e ib IIB T3 Gb
IBExU14ATEX1122 X /03
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. There is
also a connection on the outside of the motor. The earthing
points on the fan frame or fan housing are no substitute for
protective earthing in the terminal box (only for dissipation of
static electricity).
CAUTION
Cutting and crushing hazard when removing device
from packaging
→ Carefully remove the device from its packaging, only
touching the housing. Strictly avoid shocks.# 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
Shortened device service life
→ Do not grasp 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
easilymove and that the impeller blades 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. 54005-5-9970 · ENG · Revision 90396 · Release 2016-09-21 · 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 may not introduce any forces into the device that place
stress on the frame structure and that affect the Ex-relevant gap (e.g.
uneven mounting level, air duct connections, or the like).
; 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
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 impeller and inlet nozzle is set
by ebm-papst and is at least 1% of the contact diameter (see
chapter 4.1 Product drawing).
Axial gap dimension
The axial distance between pressure tap and impeller must be
at least 1% of the contact diameter; (see chapter 4.1 Product
drawing).
→ Remember to always check this distance in axial and radial
direction on start-up and when performing routine checking in
accordance with chapter 7.3 Maintenance interval. Operation
of the device with less than the minimum gap dimension is
not permissible.
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 fan housing.# Operation of the
fan without earthing to dissipate electrostatic charges is not
permitted.
NOTE
Observe the minimum permissible temperature of -35°C
for connection of the cables at the terminals.
The terminals could be damaged.
→ Only connect the connection cables at temperatures above -
35°C.
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