Hitachi C 10RA2 Technical And Service Manual page 37

No Problem
4 The saw blade won't
turn even if the switch
is turned on.
5 Slow saw blade
rotation.
The saw blade speed is
less than 5,000 /min.
6 Fast saw blade speed.
The saw blade speed is
more than 5,000 /min.
Possible cause
a) Power cord is not
connected to the
power outlet.
b) Wear of the carbon
brushes has exceeded
the wear limit (5 mm).
c) Switch failure
d) The circuit breaker
switch activated.
a) Power voltage lower
than rated voltage.
a) Power voltage higher
than rated voltage.
--- 33 ---
Factory rated
value
------
• Check the power voltage.
• Plug the power cord into the
outlet.
------
• Check the Carbon Brushes
[221].
• Replace the Carbon Brushes
[221].
------
• Check the Rocker Switch [159]
or the Circuit Breaker Switch
[152] for continuity.
• Replace the Rocker Switch
[159] or the Circuit Breaker
Switch [152].
------
• Press the reset button after 2 to
3 minutes.
• Check the power voltage.
4,500 --- 5,500 /min
• Check if the extension cord
used is nonstandard. The
usable extension cords are as
follows:
Ampere rating
Ext. cord length
• Check the power voltage.
4,500 --- 5,500 /min
Remedy
15
Wire gauge size
25 ft. 14 A.W.G.
(7.5 m) (2.0 mm
50 ft. 12 A.W.G.
(15 m) (3.5 mm
2
)
2 )