ClimateRight CR-2550 Manuel du propriétaire télécharger pdf (Page 275)

7-30

CHAPTER 7

Zinc anodes in brackish or salt water need to be checked more

frequently. If the anodes seem to be requiring frequent replacement

there may be a boat leaking DC current into the water taxing the anodes.

This is especially possible around a marina environment. Contact a

marine professional who can measure the galvanic activity with a special

electrode and electric VOA meter. Refer to the engine manufacturer’s

manual for exact anode location and detailed information. Stern drive

or related parts damage due to galvanic or stray current corrosion

is not covered under the Regal limited warranty.

SACRIFICIAL ANODE

VOLVO SHOWN

Zinc Anodes

Sacriﬁ cial zinc anodes are located on the stern drive housing, trim

cylinders and/or propshaft to protect softer metals exposed to the

water. Electrolysis attacks the least noble metals ﬁ rst. Because zinc is

a less noble metal, it will decompose before other metals. Check these

zinc anodes periodically and have them replaced when they are 30%

consumed. Notwithstanding, zinc is the most popular metal used to

protect parts that are exposed to saltwater, freshwater or brackish

water.