Panasonic ES-LV97 Operating Instructions Manual page 26

Problem
The shaving sensor
responds even though
the shaver is not in
contact with the skin.
26
Action
Clean the beard trimmings
from the shaver.
When the shaver is
extremely dirty, remove the
foil frame and wash with
water.
(See page 17.)
Replace the system outer
foil and/or inner blades.
Expected life of system
outer foil and inner blades:
System outer foil:
Approximately 1 year
Inner blades:
Approximately 2 years
Problem
Operating time is short
even after a full charge.
Shaver does not
operate even after
charging.
Action
Although the shaver can be
used for about 2 weeks after a
full charge (assuming dry‑
shave usages for 3 minutes
per day), the usable number
of days might be lower
depending on how the shaver
is used (for example, when
used for wet shaving).
Apply oil.
This can be improved by
cleaning every time after
shaving.
When the number of
operations per charge starts
to decrease, the battery is
nearing the end of its life.
Use the appliance in an
ambient temperature
approximately 5 °C or higher.
The battery has reached the
end of its life.
The shaver will not operate
with the AC adaptor
connected. Please use the
shaver after it has been
sufficiently charged and the
AC adaptor disconnected.