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4.6.4
Optimal installation distances according to for RH../ ER../ GR.. fans
•
Distance on suction side: LA
≥
0.5 x DSa *
•
Distance on the pressure side: LD
≥
1 x DSa
•
Impeller blade external-diameter :
Ø
DSa
•
Housing wall distances: A = 1.8 x DSa (A = B)
* In the case of disturbance
fl
ow (per example curved pipe at the suction side,
fl
aps etc.) LA
≥
1 x DSa
4.7
Mounting the motor
Motors design MK
Fastening to
fi
xed motor
fl
ange
(assembly of axial fans / fans of design A, D ..) and (assembly of
radial fans of design RH).
•
If the motor is used to drive fan impellers or other components, please note the maximum
permissible speeds of the impeller or the component to be driven.
•
The max. permissible mass of the impeller ort he component to be driven must be inquired from
and con
fi
rmed in writing by ZIEHL-ABEGG.
Design K (with rotor
fl
ange) or D (with offset rotor
fl
ange) as a drive for fans:
•
During assembly of the fan impellers or other components, no inadmissible force may be applied to
the motor bearing.
•
Centre the fan impeller accurately and mount without tension on the rotor
fl
ange, the fan wheel
must lie
fl
at.
•
Use suitable screws for fastening the fan impeller on the rotor
fl
ange and
fi
t as suitable screw lock.
•
Every screwing case must be tested for suitability.
•
The permissible area pressing of the rotor
fl
ange may never be exceeded (depending on the
contact surface).
•
Too great a screw overhang is not permitted and can lead to scraping or blocking of the rotor on the
fi
xed motor
fl
ange.
•
Motors are not balanced as standard, a complete balancing with mounted fan impeller is necessary.
The balancing must be done on the fan impeller. The pertinent regulations must be observed.
Permissible tightening torques M
A
Thread size
M6
Property class 8.8, friction coefcient
µ
ges = 0.12
9.5 Nm
Screw penetration
≥
1.0 x d
Max. permissible screw overhang
1.0 mm
Assembly instructions
ECblue
Mounting
L-BAL-F055D-GB 1634 Index 002
Part.-No.
13/51