Zinc Anodes - FNM HPE 300 Owner's Manual

Marine Diesel Engines
4. Replace the cover re-screwing it and replace the sensor connector.
ATTENTION ! In the low pressure circuit diesel fuel is kept under pressure by the electric pump. Be careful
to avoid the formation of air bubbles in this part of the circuit, otherwise you will have irregular operation of
the engine. To put the circuit under pressure after the drainage operations turn the ignition key to position
(I) and wait that the electric pump stops working, before turning on. Repeat if necessary.
Zinc anodes prevent oxidation of engine metal parts. They are position in the sea water circuit. Replace
the anodes if the sacrificial zinc cartridge (see the picture below) is consumed over the 50%(the length of
the new part is around 15 mm). The zincs consumption depends on many ambient factors and engine
connections. The producer uses pure zinc anodes that can be used in the marine environment. Take care
when reassembling to maintain the electrical continuity (contact between the metal parts).
Follow the instruction to disassemble:
1. Stop the engine
2. Unscrew the anodes only after closing the sea water circuit valve .
3. Replace the anodes if the sacrificial part is consumed over the 50% and replace the copper
washer when retightening the anodes using thread sealant type LOXEAL 1810.
4. Open the sea water circuit and verify for leaks.
ENG rel. 1/11
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WNER S ANUAL

Zinc anodes

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Engine maintenance
HPE300
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