Volvo MD22L Owner's Manual download pdf (Page 20)

Electrical system

CAUTIONS FOR ALTERNATOR

The engine is equipped with an alternator. If the alterna-

tor and the regulator are to function without interference,

it is important that the following instructions are ob-

served.

1. The main battery switch must not be switched

off until the engine has stopped.

Never disconnect battery cables or wiring in the

charging system when the engine is running.

Disconnecting any part of the charging circuit

when engine is running will result in failure of the

voltage regulator and serious damage to the

alternator.

2. Battery terminals polarity must never be mixed

up, as improper will cause damage or equip-

ment failure. The battery terminals have a plus

and a minus sign respectively. The cable clamps

must be well tightened and then greased.

3. Do not switch the charging circuits while the

engine is running.

Install a Volvo Penta charging distributor (acces-

sory) to the alternator when more than one battery

is connected.

4. In the event the engine has to be started with the

help of a spare battery, proceed as follows:

Let the ordinary battery remain connected. Con-

nect the spare battery to the battery with plus to

plus and minus to minus. When the engine has

started, remove the spare battery but under no

circumstances may the circuit to the ordinary

battery be broken.

5. Do not use a rapid charger when the alternator is

connected to the battery. Never use a rapid

charger as a booster to provide starting voltage.

6. Disconnect both battery cables before doing any

work on the alternator or electrical system.

7. Before carrying out any electrical welding on the

engine or boat components, disconnect the

charging regulator cables at the alternator and

insulate the cable ends.

8. Check the belt tension and the cable connections

regularly.

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Volvo MD22L Owner's Manual Page 20

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