Operating instructions
K3G560-AP23-90
`
II 2G Ex db eb ib IIB T3 Gb
IBExU14ATEX1122 X /04
`
Translation of the original operating instructions
54006-4-8670
5. CONNECTION AND STARTUP
Before starting the tasks, perform the measures for worker protection
specified in your hazard assessment.
In addition to the generally valid installation regulations for low-voltage
electrical equipment, the special requirements for installing electrical
equipment in explosion hazard areas must be observed.
5.1 Mechanical connection
DANGER
Insufficient grounding
Electric shock
→ The fan must be grounded in the motor terminal box. A
further connection is provided on the outside of the motor.
The grounding points on the fan frame or housing are no
substitute for the protective grounding in the terminal box
(only for discharge of static electricity)
CAUTION
Risk of cutting and crushing when removing device
from packaging
→ Carefully remove the device from the packaging by grasping
hold of the frame. Never subject to any impact.
→ Wear safety shoes and cut-resistant safety gloves.
CAUTION
Heavy load when unpacking device
Risk of physical injury, such as back injuries.
→ Two people should work together to remove the device from
its packaging.
NOTE
Imbalance
Shortening of device service life
→ Do not grasp or transport the device by the blades. Move
the device with a crane using ropes or cloth straps.# After
installation, make sure the fan impeller moves easilyand that
the blades are not deformed or bent and do not catch at any
point.
NOTE
Installing peripheral components
→ When installing peripheral components or similar
attachments, take care to use a suitable material (at points or
areas of contact) between rotating and stationary parts.
→ When installing such parts, you as the system
manufacturer are responsible for maintaining the safety
clearance, for example between the impeller and the
housing, in accordance with EN 14986.
NOTE
Shortened service life due to extreme stresses
Examples of extreme stresses include the effects of moisture,
aggressive chemical substances and vibrations. Examples of
extreme climatic stress include extreme heat or cold or high
humidity.
→ Avoid extreme stresses.
NOTE
Damage to the device from vibration
Bearing damage, shorter service life
→ The fan must not be subjected to force or excessive vibration
from sections of the installation. #If the fan is connected to air
ducts, the connection should be isolated from vibration, e.g.
using compensators or similar elements. #Ensure stress-free
attachment of the fan to the substructure.
;
Check the device for transport damage. Damaged devices are not to
be installed.
;
Install the undamaged device in accordance with your application.
;
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, take care not to bend or pry the device so as to
avoid mechanical strain.
;
Verify that all rotating parts can move freely. The device must be
installed in such a way that the shaft is horizontal or vertical with the
rotor facing downwards.
;
During installation, take note of the device's direction of rotation.
;
Use suitable fasteners for installation.
;
Remove any objects in the fan's exhaust zone or near its blades.
;
After installation, make sure the screws have been firmly tightened.
;
The system must not transmit any impermissibly high vibration levels
to the device (vibration measurement according to Chapter 7.4
Vibration check is required during startup and regular maintenance).
If multiple ebm-papst fans are installed in one system, please
allocate serial numbers to the project and write them down so
that accurate information can be provided about the range of
devices affected in the event of a malfunction.
5.1.1 Gap dimension
Radial gap dimension
The gap dimension between the fan impeller and the 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 clearance between the pressure tap and the fan
impeller must be at least 1% of the contact diameter; (see
Chapter 4.1 Product drawing).
→ Be sure to check this clearance in axial and radial direction
on start-up and when performing regular inspections in
accordance with Chapter 7.3 Maintenance interval.
Operating the device below the minimum gap dimension is
not allowed.
5.2 Electrical connection
DANGER
Voltage on the device
Electric shock
→ Always connect a protective earth first.
→ Check the protective earth.
DANGER
Explosion hazard
→ To dissipate electrostatic charges, the fan must be grounded
via the grounding point on the fan housing.# Operation of the
fan without grounding to dissipate electrostatic charges is not
permitted.
Item no. 54006-5-9970 · ENU · Change 93219 · Approved 2018-02-08 · 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 · [email protected] · www.ebmpapst.com