Venting air from the low temperature circuit - AR20.00-P-1145H

ENGINE 275, 279, 285 

Vacuum-type cooling system filler with low-temperature circuit (NTKL) adaptation 

Prepare bleeding: line routing shown on model 230 

Perform bleeding: line routing shown on model 230 

	Risk of injury  to skin and eyes suffering scalding from contact with hot contemporary. Risk of poisoning  from swallowing coolant.	Do not open cooling system unless coolant temperature is below 90 °C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers. Wear protective gloves, protective clothing and safety glasses.	AS20.00-Z-0001-01A
	Notes on coolant		AH20.00-N-2080-01A
1.1	Connect diagnostic system in order to actuate circulation pump for low-temperature circuit	Model 216, 221
		ENGINE 275 in MODEL 216, 221 Only conduct ventilation procedure on a cold engine	AD00.00-P-2000-04A
1.2	Prepare actuation of circulation pump for low-temperature circuit	ENGINE 275, 285
		MODEL 215, 220	AR20.00-P-1145-01M
		MODEL 230	AR20.00-P-1145-01R
		MODEL 240 Only conduct ventilation procedure on a cold engine	AR20.00-P-1145-01H
		Cooler vacuum filling device	Figure
		NTKL Adaption	Fig 6
2	Screw on the connection (M) at the pressure tube (7) of the venturi nozzle (6)	The venturi nozzle (6) will lose its function if used without the pressure tube (7). The venturi nozzle (6) does not generate a vacuum, but creates excess pressure at connection (U) if the compressed air is connected without the pressure tube (7). When first assembling the venturi nozzle (6) connection (M) on the workshop equipment compressed air system must be closed.
3	Fill coolant reservoir (4) with coolant	20 liter
4	Open low-temperature circuit at filler neck and screw on tester cap	Cooler vacuum filling device	Figure
		ENGINE 279 Test cap	Figure
		ENGINE 275, 285 Test cap	Fig 5
5	Empty vacuum box (1)
6	Prepare low-temperature circuit for bleeding and check for leaktightness		AR20.00-P-1145-02R
7.1	Bleed low-temperature circuit using circulation pump and vacuum	ENGINE 275, 285
			AR20.00-P-1145-03R
		ENGINE 275, 285 Test cap	Fig 5
7.2	Carrying out the bleeding process for the low-temperature circuit	ENGINE 279
			AR20.00-P-1145-03R
		ENGINE 279 Test cap	Figure
8	Close off vacuum-type cooling system filler	Close off connections (A, B) and close diagnostic sockets for low-temperature circuit.
		Cooler vacuum filling device	Figure
9	Unscrew test cap and close off low-temperature circuit	ENGINE 279 Test cap	Figure
		ENGINE 275, 285 Test cap	Fig 5
10.1	Close off diagnostic system	MODEL 216, 221
			AD00.00-P-2000-04A
10.2	Replace switch (2) for manual actuation of the circulation pump against a relay	MODEL 215, 220, 230, 240