IS-120B
9. Maintenance
9-2
(2) Replacement of Fuse
IS-120B
has a fuse in valve circuit
(
weld force power supply
)
(
see Table below
)
.
If it is blown, replace it following the procedures below.
Circuit
Fuse rating
Size
(
Dia x Length
)
in mm
Valve
T1A250VAC
6.35 x 31.75
When replacing the fuse, be sure to turn off the main power and wait for
at least 5 minutes, then replace the fuse so as not to get an electric
shock.
(1) Check that the power is turned off, then remove the outside cover.
Printed circuit board with fuse is installed on rear left side of the controller.
(
2
)
Insert a narrow screwdriver on the fuse holders and pry it up by using the
screwdriver as a lever. At this time, apply the screwdriver only to the metallic
part of the fuse so that the glass tube will not be broken.
(
3
)
Place the metallic parts of a new fuse on the fuse holders, then push in the glass
tube with the thumb a little strongly.
(
4
)
Check that the fuse is correctly set in the fuse holders. Re-place the cover and
secure it with screws.
IS-120B Rear
①
②
③
④
①
Screwdriver
Use a narrow type.
②
Fuse (Metallic part)
[Printed circuit board]
③
Fuse (Glass part)
④
Fuse holder
DANGER
！
