Standard Coating And Preservation - Siemens FLENDER B3 E Series Assembly And Operating Instructions Manual

4.4

Standard coating and preservation

The gear unit is provided with an interior preservative agent; the free shaft ends are painted for protection.
The characteristics of the external coat depend on the ambient conditions stipulated in the order relating
to method of transport and area of application.
The gear unit is normally delivered completely ready, with a priming and a finish coat.
The coating complies with the requirements for the conductivity of the coating and the
limitation of the layer thickness of the applied coating in accordance with
DIN EN 13 463­1. The permissible maximum coating thickness depends on the
indicated explosion group (IIA or IIB or IIC). Where lacquer coatings have a thickness
less than 200 µm, no electrostatic charge is to be expected.
Where gear units are delivered with a priming coat only it is necessary to apply a finish
coat in accordance with the directives applying to the specific case of application.
The priming coat alone is not suitable to provide a sufficient long­term corrosion
protection.
The coating must not carry an electrostatic charge!
The operator must ensure that highly effective mechanisms which can set up a charge
in the coating are safely avoided.
Examples of highly effective charge­generating mechanisms are:
the rapid passage of heavily dust­laden air near by
the sudden escape of particle­laden compressed gases
other heavy friction action (not manual cleaning/rubbing with cleaning cloths)
Ensure that the coat is not damaged!
Any damage may cause failure of the external protective coating and corrosion.
Unless otherwise contractually agreed, the durability periods of the interior gear unit
preservation specified in table 4 or 5 will apply, provided the related requirements are adhered
to. The durability period for the exterior preservation and the related requirements can be found
in table 6.
The guarantee period starts on the date of delivery or that of the notice that the item is ready
for shipment.
In the case of a storage period other than that indicated in table 4 or 5 and in table 6, the interior preservation
must be checked and, as necessary, be repeated (see items 7.3.1 and 7.3.2).
The output shaft must then be rotated at least one turn to change the position of the rolling element in the
bearings. The input shaft must not be in the same position as before rotation.
This procedure must be repeated and documented every 6 months until start­up.
BA 5033 EN 03/2011
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