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If the waterproof barometric membrane is damaged or shows signs of wear and tear,
replacement of the waterproof barometric membrane is required. To replace the
waterproof barometric membrane:
1.
Take out the top cover.
2.
Peel off the old waterproof barometric membrane. Clean the surface barometric
vent and make sure there is no residue on the surface.
3.
Remove the 3M paper from the waterproof barometric membrane and press it
firmly on the barometric vent to ensure a tight seal.
4.
Put the top cover back.
Make sure there is a tight seal around the waterproof barometric membrane when
applying.
