Galvanic Corrosion; Operating Instructions - Bukh DV24 ME Owner's Handbook Manual

OPERATING MANUAL FOR BUKH DV24ME ENGINES

Galvanic corrosion

To avoid corrosion of the propeller due to galvanic action it
is advisable to fit a sacrificial zinc anode on the outside of
the hull. To obtain a high degree of protection, electrical
contact between sacrificial zinc (anode) and propeller
(cathode) has to be established.
This is obtained by fitting the sacrifial zinc and connecting
electrically, as shown on the sketch.
For the DV24 a sacrificial zinc of BERA 2B type is
recommended.
The sacrificial zinc must not be painted or be otherwise
insulated, as this will prevent the zinc from corroding.
The sacrificial zinc must be checked everytime the boat is
ashore, or at least twice a year.
If the corrosion turns out to be very heavy, bigger anodes,
e.g. 2 pcs. BERA 2B or 1 pc. BERA 1, should be fitted. If
there is no corrosion, check the electrical connections. A
good way of fitting the sacrificial zinc is to fold down one of
its flaps and to clamp it to thestern bearing by means of a
rustproof clip as shown on the sketch.
Starting Instructions for BUKH Diesel Engine type DV24ME
Electric Start:
a) Switch on the main switch.
b) Put the gear in neutral position
c) Turn the start switch to the right
until the engine starts
Hand Start:
a) Put gear into neutral position.
b) Put handle into crank claw.
c) Lift decompression lever (1).
Only for Cold Start (below 0
Start pilot: Pos 1 - 2 - 3
Pull and push the pump (2) 2-3 times.
d) Turn the starting handle as quickly as possible
(clockwise), release the decompression lever,
but keep on turning until the engine starts.
Stopping the engine:
Turn the start switch to the left.
After engine stand still:
Turn the switch right to neutral position.
Filling the pressure tank (3):
a) Open the cover.
b) Put the gas cylinder on top of the valve and fill up
the tank to max. marking.
009W0825-R02
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C).
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