CNC Electric contact system maintenance:

. a move to check whether the static contact position on the positive, while the three-phase is closed, any questions should be adjusted contact spring;

. b check the contacts wear, abrasion depth Voltage stabilizer‍ of not more than 1mm, contacts have burning, welding off when open, shall be replaced; when slight burning, generally does not affect use. When allowed to use sandpaper to clean the contacts, use plastic file;

. c white insulation resistance measurements, resistance of not less than 10MΩ CNC Electric‍;

d. Check auxiliary contact action is flexible, shall comply with the value of the contact trip, check whether the contacts fall off, found the problem, it should be repaired or replaced.

3) the core part of the maintenance:

. a clean dust, especially the moving parts and core pull between the contact surfaces;

. b Check the fastening core, the core running loose will cause increased noise;

c. the core short-circuit ring has come off or mcb circuit breaker‍ broken should be promptly repaired.

4) solenoid maintenance:

. a measuring coil insulation resistance CNC Electric‍;

. b coil insulation discoloration, aging, coil surface temperature should not exceed 65 ° C;

c. Check the coil wire connection, if open welding, burning should be repaired. 5) interrupter cover part of maintenance:

. a check interrupter cover is damaged;

. b interrupter cover and Electric transformer‍ position location without loose change;

c. Remove the metal particles and debris in the arc chute inside the crevice.‍