RJ - thermal overload electrical KM - ac contactor BXS - P - pressure switch fuses
QK-- external switch KT-- time relay HL-- signal lamp
Note: the dotted part is all external control wiring
2. Wiring diagram of three-phase motor: see figure 4
3. Common faults of three-phase electrical equipment 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 does not work:
1) the air pressure switch is cut off or damaged -- reset or replaced;
2) motor burning -- replacing motor;
3) burnt contactor coil -- replace the coil;
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