![ZIEHL-ABEGG ECblue Series Скачать руководство пользователя страница 10](http://html1.mh-extra.com/html/ziehl-abegg/ecblue-series/ecblue-series_assembly-instructions-manual_933568010.webp)
4.4
Motorheating
A continuous power supply is required for safe operation down to the minimum permitted ambient
temperature (see technical data).
If the motor is not switched on with an existing power supply (no setting signal, switch off by enable),
the motorheating switches back off automatically at a controller inside temperature of -19
°
C and
heating up to -15
°
C.
Heating takes place via the motor winding whereby a current is induced which cannot cause rotation.
4.5
Installation of axial fans
4.5.1
Fans design A, D, K, S and W (without nozzles)
For attachment to
fi
xed motor
fl
ange use screws with property class 8.8 or A2-70 (stainless steel) to
EN ISO 4014 and provide with suitable screw locking.
Permissible tightening torques M
A
Thread size
M6
M8
Property class 8.8, friction coefcient
µ
ges = 0.12
9.5 Nm
23 Nm
Stainless steel A2-70, friction coefcient
µ
ges = 0.12
7 Nm
17 Nm
Screw penetration
≥
1.5 x d
≥
1.5 x d
When using screws with different friction values or strength classes, different tightening torques may
be necessary.
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.
•
Secure fan connection cable with cable fasteners or cable clips.
A minimum head gap
“
A
”
of 2.5 mm in all installation
positions but especially in installation position
“
H
”
(horizon-
tal motor shaft) is necessary. Distortion due to uneven sur-
face may lead to fan failure due to brushing against the fan
wheel.
Attention!
Avoid structural damage or stress with installation. Make sure the surface is
fl
at and even.
Assembly instructions
ECblue
Mounting
L-BAL-F055D-GB 1634 Index 002
Part.-No.
10/51