BA 5846 en 05/2015
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 exterior coat depend on the ambient conditions stipulated in the order relating
to method of transport and area of application.
NOTICE
Material damage
Risk of damage to the gear unit through corrosion.
The gear unit is normally delivered completely ready, with a priming and a finish coat.
Where gear units are delivered with a priming coat only, it is necessary to apply a finish coat in
accordance with directives applying to the specific application.
The priming coat alone is not suitable to provide a sufficient longterm corrosion protection.
NOTICE
Material damage
Damage to the shaft seals possible.
When doing cleaning work and/or applying the top coat, the shaft seals must be protected with suitable
means (e.g. sealing with adhesive tape).
This protection prevents paint or cleaning agents from getting into the gear unit and coming into contact
with the shaft seal.
Note
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 standard "DIN EN 134631". The permissible
maximum coating thickness depends on the indicated explosion group (IIA or IIB or IIC). Where coatings
have a thickness < 200 μm, no electrostatic charge is to be expected.
DANGER
Electrostatic discharge
Danger to life through ignition of any potentially explosive atmosphere through electrostatic discharge.
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.
Note
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 or rubbing with cleaning cloths)
NOTICE
Material damage
Any damage to the coating may cause failure of the exterior protective coating and thus corrosion.
Ensure that the coat is not damaged.