IS 25T - IS30T - IS34T
50 Hz
- 20
GB
GB
7.3 Engine oil and oil filter change
The engine oil sump capacity is 10.2 litres.
Top-ups and filling with engine oil is carried out through the
hole [Fig. 3, Ref. 17].
To change the oil in the oil sump, remove the dipstick [Fig.
7, Ref. 2] and operate the special extraction pump [Fig. 7,
Ref. 7] after having removed the screw which functions as
plug.
It is recommended to drain the oil when it is still sufficiently
warm to flow easily.
For recommended oils see table A, Fig. 8.
- The first engine oil change must be carried out after 50
hours of generator operation. For the second and
subsequent oil changes, every 200 hours is sufficient.
- For more detailed information on engine lubrication,
consult the engine use and maintenance manual
attached to the generator.
- Dispose of the used oil or fuel in an appropriate manner
as they are polluting products.
Take the used engine oil to special collection centres
responsible for disposal.
Avoid contact of engine oil with the
skin. During maintenance operations use gloves and
protective glasses.
In case of contact with engine oil, immediately and
thoroughly wash the affected part with soap and water.
To replace the engine oil filter cartridge [Fig. 3, Ref.16],
unscrew it from its support, using suitable tools normally
found on the market. Reposition the new cartridge, taking
care to lubricate the rubber ring gasket.
The first replacement must be carried out after 50 hours of
generator operation. For the second and subsequent
replacements, respect an interval of 400 hours.
For further information consult the engine use and maintenance
manual.
For the safety of the engine, use only
original spare parts.
When the operation has been
completed, thoroughly wipe off all oil and fuel from the
engine parts.
7.4 Air filter cleaning
The generators of the IS series have a dry air filter which
prevents foreign bodies from entering the combustion chamber.
For its maintenance it is sufficient to clean the filtering mass
with diesel fuel once a year to remove nay impurities.
Dispose of the liquids used for air
filter washing in an appropriate manner. Take them to
special collection centres.
7.5 Fuel filter replacement
To guarantee long life and proper functioning of the engine,
it is extremely important to periodically replace the fuel filter
cartridge, respecting the frequency indicated by the engine
manufacturer as listed in the table in Paragraph 7.15.
This operation is carried out in the following steps:
- Completely unscrew the ring nut of the support [Fig. 3,
Ref. 13]
- Remove the old cartridge and position the new one.
- For remounting repeat the operations in reverse order.
When the filter has been replaced, bleed the fuel system
carrying out the operations described in Paragraph 5.2.
Avoid contact of the fuel oil with the
skin. During maintenance operations use gloves and
protective glasses.
In case of contact with fuel, immediately and thoroughly
wash the affected part with soap and water.
When the operation has been
completed, thoroughly wipe off all traces of fuel and
take the used cloths to special collection centres.
7.6 Coolant check
Periodically check the coolant level in the closed-circuit
cooling system. The reference index for this check is
printed on the expansion tank [Fig. 3, Ref. 11]. If the level
is insufficient, pour coolant into the expansion tank, taking
care not to exceed the maximum level index.
Never open the cap of the expansion
tank [Fig. 3, Ref. 11] or coolant tank [Fig. 3, Ref. 26]
when the engine is hot to prevent dangerous coolant
leaks.
7.7 V-belt tension check
A V-belt is used to transmit the rotary motion from the drive
shaft pulley to that of the seawater pump [Fig. 9 Ref. 1].
Excessive belt tension accelerates wear, while a slack belt
makes the pulleys idle and does not allow sufficient water
circulation.
Adjust the belt tension as follows:
Loosen the two adjusting screws [Fig. 9, Ref. 2] and move
the seawater pump outwards to increase the tension or
inwards to decrease it. Lock the screws and check the
tension.
The correct belt tension is such as to allow a yield of about
5 mm [Fig. 9] under a thrust force of 8 kg.
