Upkeep / Maintenance; Inspection Intervals - Nicotra Rlm E3 Betriebsanleitung

BA-CFD-RLM 9.7 – 03/2017
6.6.3 Fans with integrated NI-DV inverters
Please see the separate operating instructions or download them at www.nicotra-
gebhardt.com

7. Upkeep / Maintenance

7.1 Safety notes
Before working on the fan it is imperative to ensure:
 All poles of the drives and motors are disconnected from the grid!
 The impeller has come to rest!
 The surface temperature has been checked to prevent burning!
 There is no possibility of an uncontrolled running of the fan during the
maintenance work (e.g. through an isolating switch)!
Caution: electric shock!
There is electrical voltage in the intermediate circuit of the control electronics and
the grid connections when the permanent magnet motor turns!
 Do not do any work on the fan while the impeller/motor is rotating freely
 Lock the impeller by suitable means
 Any debris or dangerous materials which have arrived in the fan with the transported
medium must be removed using a suitable method.
Fan operation may resume after the safety checks of Section 6 "Commissioning / Safety
checks" have been carried out.
Only limited work may be carried out while in the operating condition and in observance
of the safety and accident prevention regulations: e.g. measurement of vibration.
Non-observance of these points endangers life and limb for the maintenance
personnel.
CAUTION If the state of the fan does not allow adapted action for repair it has to be put out
of order immediately and to be replaced if required!

7.2 Inspection Intervals

After having passed the period during which the grease keeps it's lubrication capacity
(30.000 h for standard applications) an bearing exchange may be required.During periods of
longer lasting stand stills the fan may be operated shortly in regular intervals. This is to
prevent the bearings from mechanical load and the avoid ingress of humidity. If fans have
been hold on stock for a longer period the bearings of fan and motor have to be checked
prior to installation.
Motors are equipped with permanently lubricated or regreasable bearings, depending on the
manufacturer, size and type of motor. Grease leakage cannot be excluded for motors with
regreasable bearings, even after the initial filling at the factory. However, this does not have
a negative effect on the life of the bearings; regreasing intervals must be adhered to.
English
EN-11/16