Cooling Circuit - Coolant; Coolant Fi Lling - Nanni Diesel H4.115 Manuel D'utilisation

Maintenance

Cooling circuit - coolant

The cooling system enables the engine to operate at an optimal
temperature and protects it against frost and corrosion. The
cooling system must be fi lled with a coolant comprising 50%
water and 50% anti-freeze and anti-corrosion additive.
The coolant must be changed regularly as the additives
become less effective over time. Prepare the mix before
fi lling the exchanger.
If the engine must be switched off for a long period in an
environment with a high risk of frost, the coolant must be
drained.
Attention! : Never use just water to fi ll the cooling circuit.
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Always use a clean receptacle and ensure the fl uids are well
mixed.
Coolant fi lling
Attention! : Do not check the coolant level when the
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engine is hot. Pressurised coolant can spurt and cause
serious burns. Carry out this work with the engine stopped
and cold. Only use new coolant when replenishing or adding
coolant.
Regularly check the coolant level.
• Turn the fi ll cap A situated on the heat exchanger to
its fi rst stop to release the system pressure and then
remove the cap.
• Check the coolant level: it must be between 1 and 2 cm
below the edge of the exchanger.
• Top up if necessary. Fill the heat exchanger slowly with
coolant up to the maximum level in order to let the air
escape.
• Run the engine for few minutes and keep it idling. Stop
the engine, wait a few moments, then check the coolant
level again. Fill again if necessary.
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A