4.5
Mounting of centrifugal fans
4.5.1
Mounting of centrifugal fans design RE, RH, RZ
For attachment to
fi
xed motor
fl
ange use screws with property class 8.8 to EN ISO 4014 and provide
with suitable screw locking.
Permissible tightening torques M
A
Thread size
M6
Property class 8.8, friction coefcient
µ
ges = 0.12
9.5 Nm
Screw penetration
≥
1.5 x d
When using screws with different friction values or strength classes, different tightening torques may
be necessary.
Mounting of centrifugal fans, RZ design
Attachment to motor fan wheel mounting according to device manufacturer's speci
fi
cations.
Information
•
Pay attention to a suf
fi
cient screw-in length in the motor
fl
ange.
•
An excess screw length of max. 3 mm is permissible.
•
Every screwing case is different. The tightening torque adapted to it must be determined by the
appropriate screw tests.
•
In the case of a vertical motor axis, the respective lower condensation drain hole must be open.
Ensure that the clearance (gap)
“
a
”
see
fi
g. between
the fan impeller and the stationary housing section is
constant. Distortion due to uneven surface may lead to
fan failure.
Attention!
•
Avoid structural damage or stress with installation. Flange and mounting bracket must be
fi
xed
fl
at
on a level surface.
•
The fan must be securely mounted, with vibration dampers if necessary.
4.5.2
Mounting of centrifugal fans design RG.. / RD..
Fastening depending on housing design on
fl
ange or fastening brackets.
Information
An additional bracket is required for fastening to the
fl
ange. This is available as an accessory.
Attention!
•
Avoid structural damage or stress with installation. Flange and mounting bracket must be
fi
xed
fl
at
on a level surface.
•
Provide screwed connections with suitable screw locking.
Assembly instructions
ECblue
Mounting
L-BAL-F056-GB 1939 Index 003
Part.-No. 00700562-GB
11/35
