Protect air conditioning circuit and components from moisture when carrying out repair work - AH83.30-N-0005-01A
MODEL 124, 126, 129, 140, 163, 166, 168, 169, 170, 171, 172, 197, 201, 202, 208, 210, 211, 215, 216, 219, 220, 230, 245, 462
MODEL 374, 375, 671, 684, 695, 800, 930, 932, 933, 934, 940, 941, 942, 943, 944, 949, 950, 952, 953, 954, 956, 957, 958, 963, 964
MODEL 375, 673, 674, 675, 676, 958, 967, 970, 972, 974, 975, 976
MODEL 405, 427, 436, 437
MODEL 414, 415, 447, 636, 638, 639
MODEL 450, 451, 452, 453, 454
MODEL 460
MODEL 461, 463 up to model year 2013
MODEL 667, 668, 670
MODEL 690, 900, 901, 902, 903 (except 903.662), 904, 905, 906 without CODE Z29 (James Cook touring camper, NAFTA) without CODE ZU8 (National version for USA) Except Minibus Sprinter
MODEL 909
Do not carry out repair operations on the air conditioning circuit in the open air during damp weather.
Moisture in the refrigerant circuit reduces the system's refrigeration output and leads to damage to the components.
After disconnecting or unscrewing refrigerant lines, immediately seal all connection apertures air tight with suitable stop plugs.
The fluid reservoir or the desiccant cartridge are to be replaced when:
- The refrigerant circuit was opened.
- A completely drained or leaky refrigeration circuit caused by a leakage.
- In the event of soiling (color dark gray - black) of refrigerant.
- A/C compressor has locked up.
- In the event of a damaged refrigerant circuit following an accident.
Always store all spare components in a dry, sealed-off area. Do not remove stop plugs in new components until just before they are installed.
Check desiccant cartridge packaging for damage. Dispose of desiccant cartridges with damaged packaging.
Install the desiccant cartridge no later than 20 minutes after opening the packaging.
Further protection against moisture is provided by carefully evacuating the air conditioning system following repair operations. By generating vacuum in the system, the evacuation process removes any moisture that might have penetrated into the system.