Figure 24: Battery Charger And 30A Fuse - Westerbeke 9.5 MCGA 60 Hz Operator's Manual

Marine gasoline generators

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Table of Contents

5 Maintenance

A separate group of stator windings, protected by a 30-amp, in line fuse, supplies AC voltage to a bridge

rectifier, which converts the AC current to supply the charging unit. The unit senses the needs of the starting

battery and supplies a DC charge when one is needed. A 30-amp blade type fuse is in the wiring harness

behind the fuel filter.

When the generator is first started, the charger produces a low-charging rate. This charging rate rises as the

generator runs.

5.4.8

How to Check the Battery

See section 9.3 specifications Electrical System for battery size recomondation.

NOTE: You must use a dedicated battery.

Review the manufacturer recommendations and then establish a systematic maintenance schedule for your

engine starting batteries and house batteries.

Monitor your voltmeter for proper charging during engine operation.

Check the electrolyte level and specific gravity with a hydrometer (except on sealed type batteries)

Use only distilled water to bring electrolytes to a proper level.

Make certain that battery cable connections are clean and tight to the battery posts (and to your generator).

Keep your batteries clean and free of corrosion.

TIP: There is a small DC amperage drain from the starting battery when the generator is not in use. To prevent this draw,

turn OFF the DC breaker on the generator control panel (or turn OFF the DC battery switch to the generator).

CAUTION: To avoid electrical shorts when working on the engine electrical circuit, shut OFF the engine battery switch;

however, to avoid damage to the battery charging circuit, never shut OFF the engine battery switch while the engine is

still running.

5.4.9

Exhaust System Maintenance

The catalyst is critical to minimizing engine CO exhaust emissions. Any water intrusion into the exhaust system

can quickly compromise the proper operation of the catalyst. Inspection of the catalyst at the prescribed

intervals is critically important.

Remove the exhaust elbow by loosening the metal clamp to provide a view of the output surface of the

catalyst.

Any visual irregularity of the normal flush, honeycomb appearance is most likely a result of water intrusion.

The cause of the irregularity must be identified and addressed.

If there is irregularity, replace the catalyst and sealing gasket.

Inspect the water-injected exhaust elbow casting for corrosion and replace as needed.

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