Alternator Maintenance; Battery Maintenance; Periods Of Inactivity; Table Of Scheduled Maintenance - Mase Generators MARINE I.S. 21.5 Manual Uso Y Mantenimento

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6.12 Alternator maintenance

The alternator used on this model of generator is type
synchronous, self-energised, with electronic voltage regu-
lation. This model alternator, without manifold and
brushes, does not require particular maintenance opera-
tions. The periodic checks and maintenance are limited
to removing any traces of damp and oxidation which
might damage it.

6.13 Battery maintenance

For starting all the generator models, it is recommended
to use an 70 A/h battery for ambient temperatures
exceeding 0ºC, and 100 A/h for lower temperatures.
Before installing a new battery it is important that it
undergoes a full charging cycle.
At least once a month check the level of the electrolyte
and, if necessary, top up with distilled water. If the
generator is not to be used for a long period, it is
recommended to disconnect the battery and store it in a
dry place at a temperature over 10ºC and to carry out a
full charging cycle once a month.
If the battery is left completely flat
for long periods, there is a risk of irreparably damag-
ing it.
The positive terminal of the battery must be protected
with Vaseline to prevent corrosion and the formation of
oxide.
For top-ups with sulphuric acid,
ready solutions must be used.
The battery top-up operations with
distilled water or with acid must be carried out with
rubber gloves and protective glasses to prevent
accidental contact of the sulphuric acid with the
skin.
In the event of accidental contact, thoroughly wash
the part affected with soap and water and consult a
doctor.
Before recharging the battery
check the level of the electrolyte and, if necessary, fill
up with distilled water. This operation must be re-
peated when the recharging cycle has been com-
pleted.
GB

6.14 Periods of inactivity

Start up the generator at least once a month.
If the generator is not to be used for a long time, the
following operations must be carried out:
- Change the engine oil
- Replace the oil filter cartridge (see par. 6.3)
- Replace the fuel filter cartridge (see par. 6.5)
- Remove the injectors and pour 2 cc engine oil into
each cylinder and let the engine turn over a few times,
manually operating the drive shaft pulley. Remount the
injectors.
- Replace the zinc anodes (see par. 6.10)
- Through the seawater intake pipe aspirate some anti-
freeze whose function is to protect the heat exchang-
ers against low temperatures and to lubricate the
seawater pump rotor and the metallic parts in the
cooling system.
- Disconnect the starter battery and store it in a dry
place (see par. 6.13)
- Disconnect the sea exhaust pipe from the engine
manifold.
- Clean the seawater filter.
- Close the seawater intake cock.
- Drain the seawater from the exhaust.
- Clean and lubricate the antisiphon valve, if installed
(siphon break).

6.15 Table of scheduled maintenance

OPERATION
Check engine oil level .............................................. 10
Check coolant .......................................................... 10
Check for oil leaks ................................................... 20
Check for fuel leaks ................................................. 20
Check for coolant leaks .......................................... 20
Adjust V-belt tension .............................................. 100
Check battery charger ........................................... 100
Clean fuel filter ........................................................ 200
Adjust belt tension .................................................. 200
*Change engine oil .................................................. 200
Check seawater pump rotor .................................. 400
Check engine rpm ................................................... 400
Check integrity of electrical connections ............ 400
Replace fuel filter .................................................... 400
* Replace oil filter .................................................... 400
Check injectors ....................................................... 400
Check injector timing ............................................. 400
Adjust play on intake/exhaust valve ...................... 400
Check the fuel injection pump .............................. 1000
Check battery electrolyte level ........................... monthly
Clean and deoxidise the metallic parts .............. yearly
Clean air filter ........................................................ yearly
Replace coolant completely ................................. yearly
Replace zinc anodes ............................................ yearly
Carry out the first maintenance operation after 50
hours, subsequently according the required intervals.
31
IS 21.5-23.5
HOURS
TABLE "B"