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The pre-assembly steps vary according to the location where the coupling list
shall operates; to prepare it for assembly, observe what follows:
3.4.1 CLEANING AND REMOVAL OF PROTECTIVE LAYERS
Before shipment, the coupling metal parts are duly protected with fluid ore 3.36.
Before coupling installation, remove.
3.4.2 AGGRESSIVE AND / OR CORROSIVE ENVIRONMENTS
Before a coupling is installed in an environment filled with aggressive or corro-
sive atmosphere (marine environment, atmospheres with corrosive acids), it is
appropriate to use specially manufactured hydromechanic couplings, i.e. with
anodized surfaces or it is necessary to coat the aluminium shells as follows:
- Degrease the coupling surfaces with a suitable solvent protecting the shaft
sealing.
- Spray the external surfaces with a suitable high-temperature resistant paint
(see coupling maximum temperature).
NOTE
The layer of paint must not exceed 200 µm in order to avoid bad heat dis-
sipation.
3.4 COUPLING PRE-ASSEMBLY
3.4.1
3.4.2
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