Wipaire WIPLINE 13000, Руководство по обслуживанию

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SERVICE MANUAL & ICA
WIPLINE 13000 FLOATS
P/N 1002548 Revision H Page 19
Corrosion
Reference the Wipaire Structural Repair Manual (SRM) for allowable corrosion/material loss limits. Corrosion is a
reaction that destroys metal by an electrochemical action that converts metal to oxide. Corrosion is accelerated
when in contact with dissimilar metals such as aluminum and steel, or any material that absorbs moisture like
wood, rubber, or dirt.
The primary means of corrosion detection is visual. The most obvious sign is a corrosive deposit of white powder.
Other signs are discoloration of the metal surface or bubbles and blisters under the painted surface. Light
corrosion may be removed by light hand sanding or chromic acid. Moderate and severe corrosion (blistering,
flaking, and pitting) may be removed by heavy sanding or grinding, and applying chromic acid. If significant loss
of skin material thickness will result in corrosion treatment, reinforcement or replacement of the affected area may
be necessary.
After removing the corroded area, restore area to original finish (prime and enamel). BOESHIELD T9, Corrosion
X, or ACF-50 may also be applied to stop corrosion. Refer to manufacturer’s instructions for application
instructions.
Maintaining the float inside and outside finishes by washing after saltwater operations will help protect the float
from corrosion. Periodically all hardware should be covered with a waterproof grease or Paralketone. Under
saltwater conditions, bolts should be removed at least once a year and grease reapplied to the shafts, heads and
nuts.
THE ABOVE CLEANING TECHNIQUES ARE VITAL
FOR KEEPING CORROSION TO A MINIMUM. SALTWATER
OPERATIONS AND ENVIRONMENT ARE STRONGLY LINKED TO
CORROSION AND MUST BE ADDRESSED PROACTIVELY.