Nanni V6.270 Instruction Manual

Nanni V6.270 Instruction Manual Manual pdf 20 page image

Maintenance22Cooling circuit - coolantThe cooling system enables the engine to operate at an optimaltemperature and protects it against frost and corrosion. Thecooling system must be filled with a coolant comprising 50%water and 50% anti-freeze and anti-corrosion additive.The coolant must be changed regularly as the additivesbecome less effective over time. Prepare the mix beforefilling the exchanger.If the engine must be switched off for a long period in anenvironment with a high risk of frost, the coolant must bedrained.I Attention! : Never use just water to fill the cooling circuit.Always use a clean receptacle and ensure the fluids are wellmixed.Coolant fillingI Attention! : Do not check the coolant level when theengine is hot. Pressurised coolant can spurt and causeserious burns. Carry out this work with the engine stoppedand cold. Only use new coolant when replenishing or addingcoolant.Regularly check the coolant level.• Turn the fill cap A situated on the heat exchanger toits first stop to release the system pressure and thenremove the cap.• Check the coolant level: it must be between 1 and 2 cmbelow the edge of the exchanger.• Top up if necessary. Fill the heat exchanger slowly withcoolant up to the maximum level in order to let the airescape.• Run the engine for few minutes and keep it idling. Stopthe engine, wait a few moments, then check the coolantlevel again. Fill again if necessary.A