64 53 ... Notes on Replacing Dryer Flask or Desiccant Insert

64 53 ... Notes On Replacing Drier Bottle Or Drier Insert

The drier bottle or drier insert does not have to be replaced at regular service intervals in a functioning, leakproof A/C system.

However, the drier bottle or drier insert must be replaced without fail in the event of:
- the refrigerant being fouled by chips (e.g. when the compressor is clamped).
- a leaking A/C system or loss of refrigerant
- the refrigerant circuit being open for a period exceeding 24 hours, e.g. during a repair.