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Home >> Mercedes Benz >> 2020 >> E350 Base >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Climate Control - 213 Chassis 2 Of 3 >> Testing & Repair >> Check Air Conditioning System For Leakage - AR83.30-P-1761LW

Check Air Conditioning System For Leakage - AR83.30-P-1761LW

Model 205 

Model 213 

Model 253 

Model 293 

  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
  Procedure for a damaged or leaky air conditioning system   AH83.30-N-0004-01A
INSPECT Check     
1 Evacuate air conditioning system. Model 205, 213, 253 AR83.30-P-1760LW 
Model 293 AR83.30-P-1760EQ
2 Carry out preliminary check for pressure drop test. Model 213 with code 1U6 (R744 refrigerant)  
REFER TO SPECIAL TOOLS 000 588 19 21 00 Leak tester   WS83.00-P-0035B
IMPORTANT Pay attention to the leak tester operator's manual.
IMPORTANT Do not fill air conditioning system with forming gas unless engine is cold.
 
Preliminary test for pressure drop test *BE83.30-P-1002-04A 
3 Fill air conditioning with forming gas and check pressure drop.    
REFER TO SPECIAL TOOLS 000 588 19 21 00 Leak tester   WS83.00-P-0035B
IMPORTANT Pay attention to the leak tester operator's manual.
IMPORTANT Do not fill air conditioning system with forming gas unless engine is cold.
IMPORTANT Temperature changes during the pressure test (e.g. through change in weather or cooling down of the engine compartment overnight) can cause pressure surges. Consistent ambient conditions must therefore be strictly ensured.
 
Pressure drop in refrigerant circuit filled with test gas *BE83.30-P-1001-04A 
4 Check for leakage on air conditioning system using gas detection unit. If no pressure drop was detected.  
REFER TO SPECIAL TOOLS 000 588 03 21 00 Gas detector   WS47.00-P-0019B
    IMPORTANT Pay attention to the operator's manual of the leak tester and the gas detection unit. If there is a problem, ↓ Replace the damaged component parts of the air conditioning system.  
5 Release forming gas from leak tester.    
6 Fill air conditioning. Model 205, 213, 253 AR83.30-P-1760LW 
    Model 293 AR83.30-P-1760EQ
AIR CONDITIONING

Number Designation Model 118, 164, 166 167, 169, 171, 177, 190, 197, 199, 204, 205, 207, 209, 211, 212, 216, 218, 219, 221, 230, 238, 240, 245, 247, 251, 253, 257, 290, 292, 293 Model 213, 217, 222 except code 1U6 (R744 refrigerant) Model 213, 217, 222 with code 1U6 (R744 refrigerant)
BE83.30-P-1001-04A Pressure drop in refrigerant circuit filled with test gas Test pressure bar 15 90
Test period h 4 4
Permissible fluctuation of ambient temperature °C ±2 ±2
Pressure drop bar 0 <1
AIR CONDITIONING

Number Designation Model 213, 217, 222 with code 1U6 (R744 refrigerant)
BE83.30-P-1002-04A Preliminary test for pressure drop test Test pressure bar 50
Test period min 1
Pressure drop bar 0