Philips S7720/26 Manual Del Usuario página 28

ENGLISH
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Replacing the shaving heads
For maximum shaving performance, we advise you
to replace the shaving heads every two years.
Replacement reminder
The shaving unit symbol will light up to indicate that
the shaving heads need to be replaced. Replace
damaged shaving heads immediately. Only replace
the shaving heads with original Philips shaving heads
as specified in chapter 'Ordering accessories'.
1 The shaving unit symbol lights up continuously
when you switch off the shaver to indicate that
the shaving heads need to be replaced.
2 Pull the shaving head holder off the bottom
part of the shaving unit.
3 Turn the retaining rings anticlockwise and
remove them.
4 Remove the shaving heads from the shaving
head holder and throw them away.