The purpose of using mechanical equipment is to make it more convenient for us. When there is a fault, we should deal with it flexibly. The grinder is one of them. What are the causes and maintenance skills of the power lamp of the surface grinder?
1. If the primary voltage is normal and there is no output voltage in the secondary, it means that the transformer is damaged and should be replaced in time.
2. Check whether the fuse Fu3 is burnt out. If the fuse is burnt out, replace the fuse, and focus on checking whether there is short circuit in the secondary indicating circuit. If the short circuit point is found, it should be treated first and then powered on.
3. One of the indicator bulbs HL, HL1, HL2, Hl3, HL4 is burnt out; use the resistance block of the multimeter to test whether the indicator bulb that is not on is burnt out, and the bulb should be replaced if the filament is burnt out.
4. If an auxiliary normally open point of contactor KM1, km2, KM3, km4, km5 and KM6 cannot be connected with the corresponding indicator light; if an indicator bulb is not on but the bulb is in good condition, check its corresponding control auxiliary normally open point, check the auxiliary contacts of contactor KM1, km2, KM3, km4, km5 or KM6, and repair the poor contact.
On 2018-08-08 11:45:46
