Design K (with rotor flange) or D (with offset rotor flange) 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 flange, the fan wheel
must lie flat.
•
Use suitable screws for fastening the fan impeller on the rotor flange and fit as suitable screw lock.
•
Every screwing case must be tested for suitability.
•
The permissible area pressing of the rotor flange 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
fixed motor flange.
•
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 µges = 0.12
9.5 Nm
Screw penetration
≥ 1.0 x d
Max. permissible screw overhang
1.0 mm
5 Electrical installation
5.1 Safety precautions
Danger due to electric current
•
Work on electric components may only be carried out by trained electricians or by persons
instructed in electricity under the supervision of an electrician in accordance with electrical
engineering regulations.
•
The 5 electrical safety rules must be observed!
•
It is forbidden to carry out work on electrically live parts! Even after disconnection, the dc-link is still
live. Always wait at least 3 minutes.
•
Cover neighbouring electrical equipment during installation work.
•
Cable glands made out of metal are not allowed in plastic terminal boxes due to lack of potential
equalisation.
•
Other measures may be necessary to achieve safe electrical isolation.
•
Connect fan only to electrical circuits that can be disconnected with an all-pole isolating switch.
•
Operating the device with the housing cover removed is prohibited because energized, exposed
parts are present inside the device. Disregarding this regulation can lead to severe personal injury.
•
The final application must ensure that the fundamental health and safety requirements are met.
•
The device owner is responsible for the EMC of the entire plant according to the locally applicable
standards.
•
Electrical equipment must be checked regularly: Loose connections are to be re-tightened and
damaged cables must be replaced immediately.
Assembly instructions ECblue Electrical installation
L-BAL-F055D-GB 2021/51 Index 006 Part.-No.
16/56
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