Wabco 1200 air dryer cartridge question
Does anyone know for sure(without guessing or just personal opinion) If a Wabco 1200 series air dryer cartridge goes bad based on time but not mileage?? 29000 miles but 10 years old; never if hardly...
Forum Discussion
The more the system is used (pressurized and heated, because compressed air is hotter than ambient, the longer the change frequency is). Ocassional use (like a Motorhome) decreases the change interval. Reason being is, when the system drops to no pressure, the entrained water vapor condenses in the lines and when the system is pressureized again, that condensed water vapor winds up in the cartridge... Pretty simple really.
