77
S08
MAINTENANCE
COOLANT
WATER & ANTI-FREEZE
Please refer to the
Fluids section
for complete information.
WATER BOILER
A water boiler can be connected to the engine coolant
circuit. If the boiler is located above the engine, an
additional recovery tank must be installed above the
boiler.
Ducts to the boiler must be in accordance with high
temperature and high pressure. Never attempt to use
flexible hoses supplied from a hardware store.
A specific boiler kit is available from Nanni Industries.
Please contact your nearest Nanni representative for
more information.
The amount of coolant must be adapted depending
the model of water boiler to completely fill the coolant
system.
COOLANT EXPANSION
When the engine is running, the internal temperature is
high ; as a result, the coolant liquid expands its volume.
The heat exchanger is designed to accomodate this
normal and physical expansion.
Make sure not to overfill the heat exchanger when filling
with coolant.
CHECKING COOLANT LEVEL
DANGER !
Never open the coolant filling cap or any plug of the
cooling system when the engine is operating or still
warm. Steam or hot fluid can spray out. Prevent potential
injuries ! Use protective gloves as coolant can cause
irritation if it comes in contact with the skin.
IMPORTANT !
It is not permissible to top up large amounts of coolant
via the expansion tank. Filling via the expansion tank
leads to air locks in the cooling system which can lead
to e.g. cavitation damage to the coolant pump shaft
seal. If a large amount of coolant needs to be added,
follow the instructions in the section
Filling coolant
.
The following instructions apply to Nanni expansion
tanks. For other types of expansion tanks, follow the
manufacturer’s instructions.
1. Check the coolant level through the sight glass on
the expansion tank.
2. Top up with coolant as necessary.
CHECKING COOLANT ANTIFREEZE AND
CORROSION PROTECTION
Tools
Description
Illustration
Refractometer
WARNING !
Avoid skin contact with coolant as this may cause
irritation to the skin. Wear protective goggles and gloves
when handling coolant.
Summary of Contents for N13.700 CR3 HD
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