MMD Equipment 40S-8B1 - Manual (Page 25)

4. Operation
4-4
A080516
Reset
4.2.4 Circuit protector (CP) for AVR protection
AVR is equipped with circuit-protector (CP) for
protection against overcurrent. Under the following
cases, it happens to function.
 In case the machine gets overloaded while engine
speed is still lower.
 In case the output voltage of generator is increased
higher than the specified voltage.
＜ Symptom＞
 When circuit protector functions and load is applied
to the machine, such trouble as larger variance of
voltage and/or delayed voltage recovery follow.
＜ How to reset＞
 Press the white colored AVR button inside the
control panel for resetting the circuit-breaker.
Note: Do not hold the button with such sharply pointed
things as a screwdriver, ball point pens etc.