4. Safety devices
4-1 Thermal relay
When electric current exceeding the rating, the thermal relay (Fig.21) is actuated
automatically to stop the driving motor. If the thermal relay is actuated, locate and correct the
cause and reset the thermal relay by pressing the thermal relay reset push button.
4-2 Fuses
Fuses (Fig.21) are installed in the control box to protect electric circuits. If the machine
does not start operation with the power source connected and no abnormality is indicated in
each safety device, check the fuses. If fuses are blown, remove the cause before replacing the
fuse.
Fig.21
Thermal
relays
Fuses
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