Alamarin Jet AJ 340, Руководство по эксплуатации и обслуживанию

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Maintenance
Operation and maintenance manual
KHO/340/EN/1.0.0. 15
4. Maintenance
The jet is designed and manufactured to be as simple as possible. This is why
the need for maintenance is low and maintenance can be carried out on shore.
However, maintenance must be performed regularly and whenever the need
arises.
Alamarin-Jet can provide you with a toolkit, available through separate order,
for maintenance purposes. The toolkit includes the tools needed to perform
most maintenance and repair procedures on the jet. The tools included in the
toolkit are specified in table 3.
Table 3. Toolkit
Tool Pcs Size
Wrench 6 10, 13, 17, 19, 30, 36 mm
Allen wrench 1 6 mm
Knife 1 -
Universal pliers 1 -
Feeler gauge 1 -
4.1. Washing
Washing the jet regularly removes possible salt accruals and impurities, thus
reducing the risk of corrosion.
Every time you lift the jet out of the water, it is a good idea to rinse it with
fresh water.
4.2. Corrosion protection
The jet has been protected against corrosion in the manufacturing and
installation phases. However, the protection requires regular maintenance.
4.2.1. Changing the anodes
The raw materials used for manufacturing the jet parts are mainly aluminium,
acid-proof steel, and plastic. Materials that have different electrochemical
properties can form a galvanic couple when they are submerged in electrolytic
fluid (salt water). A galvanic couple forms an electrical circuit because the
materials have different inherent voltages. This in turn leads to electron
movement and corrosion of the weaker material.
Cathodic protection is used to prevent the propagation of galvanic corrosion.
Cathodic protection means introducing a third material with weaker
electrochemical properties into the same circuit.