Lewmar 300 SVTAH, Руководство по установке

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CORROSION
Sea water is both corrosive and conductive, so care should be taken to protect
the underwater components of the Thruster.
Under no circumstances should any equipment be electrically connected to the
Thruster.
The Thruster must not be used as an earth return and it should be noted that
most hydraulic hoses contain wire braid reinforcement and are therefore
conductive. Consequently, the Thruster, hydraulic valves, hydraulic pump and
the prime mover which drives the pump may be inadvertently electrically
connected. For this reason, it should be ascertained that all equipment
connected by the hydraulics hoses have insulated returns or the hoses contain
insulated sections ( eg small lengths of Kevlar reinforced hose ).
It will be necessary to fit sacrificial anodes. Consult a cathodic protection
specialist, follow specialists recommendations on materials, fitting of
anodes and electrical checks. The anodes are usually fitted inside the
propeller shroud and are in strip form. It is vital that they are electrically
bonded to the metal of the Thruster by their fixing bolts. It is the
responsibility of the owner / builder of the boat to ensure that adequate and
effective anodic protection is in place.
The underwater part of the Thruster must be anti - fouled and a primer
compatible with the anti - fouling should be applied first. It is essential that the
primer and the anti - fouling paint is compatible with the Thruster materials.
In the case of a vertically retracting Thruster, it is essential that no paint is
applied to the stainless retracting leg.
Retracting and swing Thrusters should not be left in the " Down " position when
not in use.
The inboard components of the Thruster are normally supplied unpainted, and
these should not be painted. Certain hydraulic components, such as pipe / hose
fittings, and the bodies of some control valves, motors and pumps are made of
mild steel and it is recommended that these are painted after all hydraulic
connections have been finally made and tested.
Data Sheet : 023