Check air conditioning system for leakage · ar8330d1761ts · Mercedes-Benz WIS

AR83.30-D-1761TS

Check air conditioning system for leakage

06.12.2019

Model

907, 910

Modification notes

18.07.2019

Basic data reference BE08.50-N-1001-02TE, added

Operation step 2

 Danger	Risk of death when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC)	Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines.Model 910 with engine 780.703	AS00.00-Z-0035-01A
 Danger	Risk of explosion when using a forming gas with incorrect mixing ratio. Risk of suffocation due to inhalation of forming gas. Risk of injury due to bursting of high-pressure hoses.	Wear safety glasses and protective gloves. No smoking or open flames. Work in well-ventilated rooms only.	AS83.00-Z-0001-02A
Topical note	General information on handling vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system		AH00.00-Z-0300-01A
Topical note	Protect air conditioning circuit and components from moisture when carrying out repair work		AH83.30-N-0005-01A
Topical note	Procedure for a damaged or leaky air conditioning system		AH83.30-N-0004-01A
	Check
1	Discharge and evacuate air conditioning system.		AR83.30-D-1760TS
2	Fill air conditioning with forming gas and check pressure drop.
	000 588 19 21 00 Leak tester		WS83.00-P-0035B
		 Make sure ambient temperatures remain constant. Otherwise, temperature changes during the pressure test (e.g. caused by a change in the weather or cooling down of the engine compartment over night) may cause pressure fluctuations.
		 Do not fill air conditioning system with forming gas unless engine is cold.
		 When connecting and when operating the leak tester, the complete work procedure must be conducted in accordance with the manufacturer's operator's manual.
		Model 910 with engine 780.703Pressure drop in refrigerant circuit filled with test gas	*BE08.50-N-1001-02TE
		Model 907 Model 910 with engine 651Pressure drop in refrigerant circuit filled with test gas	*BE83.30-N-1001-04TS
		If a pressure drop was detected,
		
		locate leakage in air conditioning system using gas detection unit.
		000 588 03 21 00 Gas detector	WS47.00-P-0019B
		 Observe operator's manual for gas detection unit.
		If a leak is present,
		
		replace affected air conditioning system component parts.
3	Vent used forming gas from refrigerant circuit using leak tester.	 Observe operator's manual for the leak tester.
4	Fill air conditioning.		AR83.30-D-1760TS

Refrigerant circuit of cooling system

Number	Designation			Engine 780.703 in model 910
BE08.50-N-1001-02TE	Pressure drop in refrigerant circuit filled with test gas	Test pressure	bar	15
		Test period	h	2
		Permissible ambient temperature fluctuation	°C	2
		Pressure drop	bar	0

Air conditioning

Number	Designation			Model 907, 910
BE83.30-N-1001-04TS	Pressure drop in refrigerant circuit filled with test gas	Test pressure	bar	15
		Test period	h	4
		Permissible ambient temperature fluctuation	°C	2
		Pressure drop	bar	0

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