Westerbeke 4.5 KW BGC -60Hz Manual del operador descargar pdf (Pagina 26)

Dry stack-type exhaust systems (shown

the right) must be attached

the gen-

erator

engine's

exhaust manifold

means of a flexible connector pipe. This

system must be

properly supported and

insulated

prevent water from entering

into the engine's

cylinders. Provisions

must

made

for

discharging

the

engine's cooling sea water.

Exhaust

System

Failures

FLAf'PE~

coVEN

~lf

. I

! '

---1

~=====14r.~,L

7'f"".M.

MUI"FLI::R

XHSUL

TJ:DN

.:!

.1/2"

X.F.5.

COHDr::N-;::::S;p;~i'-'

P][I"E

SAT:tOH

TRAP

PXTI:

EXHAUST

LIHf

SE:A

WATER

%NTAKe:

TIH;lOUGH_

HULL

I'"1:Tl":t

....

DRY

STACK

EXHAUST

When the engine's sea water

fed into an exhaust system so that the full stream of this water strikes a sur-

face, erosion takes place. This erosion may cause premature failures. The proper design of either a water

jacketed

water injected "wet" exhaust system

prevent this problem requires that the sea water inlet

positioned so that the entering stream of sea water does not directly strike a surface. In addition, the velocity

of the entering sea water stream should be as low as possible, which can be achieved

having inlet fittings

as big in diameter as possible.

The best protection against carbon monoxide poisoning

a daily inspection of the complete exhaust sys-

tem. Check for leaks around manifolds, gaskets, and welds. Make sure exhaust lines are not heating sur-

rounding areas excessively.

If excessive heat

present, correct the situation immediately. If you notice a

change in the sound or appearance of the exhaust system, shut down the unit immediately and have the

system inspected and repaired at once

a qualified mechanic.

Make sure there are no unnecessary objects suspended from any portion of the exhaust

lines. Exhaust risers

installed off the exhaust manifold should not exceed 8 Ibs

total weight when rigidly constructed. Exces-

sive weight could cause deflection

distortion of the lines, resulting

damage or leaks. Inspect insulated

portions of the exhaust system

ensure there

no deterioration of the insulation.

CAUTION

Prolonged

cranking

intervals

without

the

engine starting can result in filling

the

engine-

mounted

exhaust system

with

sea waler coolant. This

may

happen because

the

sea

water

pump

pumping

sea water

through

the

sea water

cooling

system

during

crank-

ing.

This

sea water can enter

the

engine's cylinders

way

the

exhaust

manifold

once

the

exhaust system fills. Prevent

this

from

happening

closing

the

sea water

supply

through-hull

shut-off, drain

Ihe

exhaust

mulller,

and correct

Ihe

cause

lor

the

excessive

engine

cranking

needed

obtain a start. Engine damage resulting

from

this

Iype

sea

waler

entry

nol

a warrantable issue;

the

owner/operalor

should

keep

this

mind.

Weslerbeke Generators

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Westerbeke 4.5 KW BGC -60Hz Manual del operador Pagina 26

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