Operation Initial start-up Additional venting of the fuel system by a 5 minute trial run at idle speed or on low load is absolutely essential. Carry out a brief trial run up to operating temperature (approx. 90 °C) after preparations. z Work with the engine not running: Check engine for tightness. Check lubricating oil level, if necessary top up. Check the coolant level and top up coolant if necessary. z Work during the trial run: Check engine for tightness. 26 © 2009 Do not load the engine if possible. Trial run z If required, repeat procedure with engine start. z Fill up coolant to the MAX mark on the compen- sation tank and close the cooling system cap.
z Switch on any available heating and set to the highest level so that the heating circuit is filled and vented. z Observe the filling volume of the cooling system ( 72 ). z Start the engine and run up until the thermostat opens (line (2) heats up). z Engine operation with open thermostat 2 - 3 min- utes. z Check the coolant level and top up coolant if nec- essary. Danger of scalding from hot coolant! Cooling system under pressure! Only open the cap when cool! Observe safety regulations and national specifications when handling cooling me- dia. The coolant must have a prescribed con- centration of cooling system corrosion pro- tection agent!
Never operate the engine without coolant, even for a short time! z Connect coolant outlet (2) and coolant inlet (1) to the cooling system. Connect the feed line of the compensation tank to the coolant pump or to the coolant inlet line (3). z Connect ventilation line from the engine and, if necessary, from the cooler to the compensation tank. z Fill cooling system via the compensation tank. z Close compensation tank with valve. 2 1 Order coolant corrosion protection agent from your DEUTZ partner. 3 Filling the coolant system 3