Service
Manual
‐
CTM
HS
‐
559
12
Maintenance
5
‐
1
Motor
Carbon
brushes,
Change
of
new
carbon
brush
could
effectively
improve
abnormal
noise.
Carbon
brush
is
consumables,
which
wears
out
after
use,
hence,
in
order
to
sustain
motor
quality,
CTM
would
recommend
following:
‐
When
one
carbon
brush
is
worn
to
1/2
of
its
original
length,
it
is
necessary
to
replace
4
carbon
brushes
by
new
ones.
‐
When
one
carbon
is
worn
out
by
2/3
of
its
original
length,
4
carbon
brushes
must
be
replaced
by
new
ones.
‐
Suggested
change
for
brush
=
one
time
only
5
‐
2
Batteries
(50ah)
Information
for
battery
voltage,
‐
Normal
situation:
12.95V~13.1V
‐
Low
battery:
Below
12.9v
‐
Dead
battery:
Below
12v
‐
First
charging
after
receiving:
8hr.
Information
for
battery
storage
temperature,
‐
Below
20°C,
after
full
charging,
can
store
9
month.
‐
Between
20~30°C,
after
full
charging,
can
store
6
month.
‐
Above
30°C,
after
full
charging,
can
store
3
month.
Battery
maintenance,
Summary of Contents for HS-559
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