4) overload protection of thermal relay -- find the reason and eliminate it.
(2) burning of the controller
1) check the cable specifications;
2) short circuit of motor winding -- replace the motor;
3) check whether the controller specification matches the motor power.
4.6.2 single-phase electrical
2. Wiring diagram of single-phase motor: see figure 6
P - pressure switch K - centrifugal switch C1 - start capacitance - overheat protector
capacitance C2 – work
3. Common faults and countermeasures:
Special attention: electrical fault should be handled by experienced electrician,
non-professional personnel should not handle without authorization, otherwise it is
easy to cause equipment and personal injury.
(1) Motor cannot start:
1) Motor burning -- replacing motor;
2) Disconnect the power cord -- find and exclude;
3) The pressure switch is disconnected or damaged -- repair or replacement;
4) Disconnect the overheat protector -- find out the reason and exclude waiting for the
motor cooling before starting.
(2) The motor has a small starting torque, and the motor is buzzing:
1) The power grid voltage is too low -- find the reason;
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