8.1 In case the motor stops during operation, carefully
check whether there is a phase failure or overload, and
check whether the temperature of the motor rises very
high first. If there is a temperature rise, the motor may
stop due to overload. If there is no temperature rise,it
may be phase failure causing tripping, check whether the
three-phase power supply is normal; Whether the
dynamic and static contacts of the AC contactor are in
good contact, and whether the three power lines of the
motor are loose; If the motor still cannot start after
everything is normal, it is necessary to carefully check
whether the self-locking contact of the AC contactor and
the connection screw of the normally closed contact of
the protector are loose and other reasons. The motor can
be started until the fault is removed. When the fault is
not removed, can not start the motor forcibly to avoid
accidents.
8.2 The protector shall be used in conjunction with the
motor and load switch (such as contactor), and the
power supply shall be switched on synchronously. If the
power supply is not switched on synchronously, the
protector shall appear phase failure fault, and the motor
cannot be started normally.
8.3 When a fault occurs, disconnect the power supply
first, find the cause of the fault, check the circuit and
follow the instructions for installation and operation;
8.4 If the product has quality problems, please contact
the local distributor or our company.
8. Common faults and troubleshooting methods
9
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