Just like we said yesterday,the heating system of accumulator die head is divided into three parts. The first part is the temperature controller. The second part is the contactor and the third part is the heater.Contactor Maintenance is very importance.
Yesterday, Yankang shared with you how to maintain the temperature controller.
Today, Yankang Plastic Machinery will share with you about the contactor maintenance.
The working condition of the heating system contactor and motor contactors has a little difference.Because of the characteristic of the temperature control, the heating systems contactor is always in on and in off the frequent alternation work, contactor and the coil are under the high load working condition,so need pay attention to following maintenance.
1)Using the downtime to clean the connector, keeping it clean.
2)Often check the working of the contactor protection circuit is normal or not, replace and repair them in time when you discovery the faults.
3)Regular check fasteners whether is loosen, especially the pontes of the guide line and conductor,prevent the connector become loose and emit heat.
4)Regular check the position of movable contact and stationary contact whether align, the three-phase whether closed at the same time. Adjusting the contact spring if there has problems.
5)Regular check the degree of wear for touch spot, the wearing depth can not exceed 1mm.
6)When touch spot has the serious burning loss and open welds falls off replacing them promptly. But slight burning loss does not affect the use.
7)Cannot use sandpaper when clean up the touch spot, should use reshaping file.
8)Regular measure the interphase insulation resistance, the resistance value can not lower than 10MΩ.
9)Regular check the motion of the auxiliary contacts whether agility, contacts stroke should correspond to the special value.Check up the touch spot whether looseness and fall off, repair and replace them promptly when discovery problems.
10)Regular maintain the iron core. Pay attention to cleaning actuation contact surfaces between moving parts and iron core joint contact surface. Inspect the tight situation of iron core, it will cause operation noise increased if the iron core loose: must repair promptly if it short circle or fracture.
11)Regular maintain the solenoid coil. Measure the coil insulation resistance, check up the insulator whether change color or aging, the temperature of the coil surface should below 650.Inspect the attached point of the coil lead wire, if it has burning loss or open welds, repairs promptly.
12)Maintain the arcing chamber. Check up it whether damaged, the position whether loosen and position variation, eliminate the metal granules sundry in the slit of arcing chamber.
13)Replace the invalided contactor of heating system promptly. When you replace them notice the type,power, coil and voltage of the main parameters to meet the specification of the machine, and ensure the wiring is correct and contactor fixed reliable.
Contactor maintenance of the blow molding machine is shared here. Regarding the maintenance of other parts, Yankang Plastic Machinery will share it for you in the following time.