Drain, evacuate and recharge air conditioning, check for proper operation and check for leaks - AR83.30-P-1760NKB

MODEL 117, 156, 176, 231, 242, 246 except CODE 2U8 (Refrigerant R-1234yf)

Shown on MODEL 246

Fig 1: High/Low Pressure Pipes And Filling Connection - Shown On Model 246

Courtesy of MERCEDES-BENZ USA

	Risk of injury due to fan starting unexpectedly	Do not reach into the rotation or hazard area of the fan. Wear closed and close-fitting work clothes.	AS20.40-Z-0001-01A
	Risk of explosion caused by welding or soldering work on closed air conditioning system. Risk of poisoning caused by inhaling overheated refrigerant vapors. Risk of injury to skin and eyes caused by contact with liquid refrigerant.	Do not perform welding work on or near a closed air conditioning system. No smoking or open flames. Wear safety glasses and protective gloves. Work only in well ventilated areas. Carry out repair work on the air conditioning system circuit only after the system has been drained.	AS83.00-Z-0001-01A
	Protect air conditioning circuit and components from moisture when carrying out repair work		AH83.30-P-0005-01A
	Procedure for a damaged or leaky air conditioning system		AH83.30-N-0004-01A
	Notes on handling refrigerant R134a		AH83.30-N-0003-01A
	Draining
1	Connect filler connection (2) of air conditioning service unit to high-pressure line (1) and filler connection (3) of air conditioning service unit to low-pressure line (4)
	000 588 04 82 00 Air conditioning service unit		WS83.00-P-0031B
2	Suction off refrigerant	Note down extracted quantity of refrigerant oil in refrigerant circuit. When operating the air conditioning service unit, proceed in accordance with the operator's manual from the manufacturer.
3	Install new desiccant cartridge	Model 231 except code 2U8 (Refrigerant R-1234yf)	AR83.30-P-6521RK
3	Install new desiccant cartridge	Model 117, 156, 176, 242, 246 except code 2U8 (Refrigerant R-1234yf)	AR83.30-P-6521NKB
	Evacuate
4	Clean refrigerant and evacuate refrigerant circuit
5	Perform vacuum test with air conditioning service unit
	Filling
6	Add new compressor oil to the refrigerant circuit according to the quantity of refrigerant oil noted during extraction	Use approved compressor oil only. If it is proven that a different compressor oil has been used, we will refuse to reimburse costs within the warranty and goodwill period. Daimler AG reserves the right to perform reexaminations. Correct compressor oil in the refrigerant circuit. In the event of an incorrectly measured quantity of refrigerant oil, the refrigerant compressor may be damaged. Depending on the repair case, the quantity of refrigerant oil must be corrected accordingly. ↓
		Correct oil level in air conditioning system if system is suddenly drained	AR83.30-P-5253NKB
		Correct oil level in air conditioning system after replacing parts	AR83.30-P-5252NKB
		Correct oil level in air conditioning system in the event of repair or slow refrigerant loss	AR83.30-P-5251NKB
7	Charge air conditioning system	Model 117 with engine 133 except code 2U8 (Refrigerant R-1234yf) Model 117 with engine 270, 651 except code 2U8 (Refrigerant R-1234yf) Model 156 with engine 133 except code 2U8 (Refrigerant R-1234yf) Model 156 with engine 270, 607, 651 except code 2U8 (Refrigerant R-1234yf) Model 176 with engine 133 except code 2U8 (Refrigerant R-1234yf) Model 176 with engine 270, 607, 651 except code 2U8 (Refrigerant R-1234yf) Model 231 except code 2U8 (Refrigerant R-1234yf) Model 242 with engine 270 except code 2U8 (Refrigerant R-1234yf) Model 242 with engine 780 except code 2U8 (Refrigerant R-1234yf) Model 246 with engine 270, 651 except code 2U8 (Refrigerant R-1234yf) Filling capacity - air conditioning/automatic air conditioning	*BF83.00-P-1001-01K
8	Perform pressure test with air conditioning service unit	In the event of a pressure drop during the pressure test: ↓ Check air conditioning system for leakage
8	Perform pressure test with air conditioning service unit		AR83.30-P-1761NKU
9	Disconnect filler connection (2) of air conditioning service unit from high-pressure line (1) and filler connection (3) of air conditioning service unit from low-pressure line (4)