1. The installation direction of thermal relay must be the same as that specified in the product manual, and the error shall not exceed 5°.When the thermal relay is installed together with other electrical appliances, it should prevent the heating of other electrical appliances.Cover the heat relay.
2. Check whether the rated current value of the thermal relay thermal element, or the scale value of the current adjustment knob, is equal to the rated current value of the motor.If not equal, replace the heat element, or turn the scale of the adjustment knob to comply.Usually, the rated current value of the thermal relay is slightly higher than that of the motor.If the thermal relay and the motor are installed in two places respectively, and the ambient temperature of the two places is quite different, then the current value of the two should be different.For example, JR1 and JR2 series thermal relay have no temperature compensation. When the ambient temperature of the thermal relay is lower than the ambient temperature of 15~20°C of the motor, the rated current value of the thermal relay thermal element can be 10% smaller than the rated current value of the motor, so a smaller thermal element can be selected.On the contrary, the rated current value of the thermal element is 10% larger than the rated current value of the motor, and a larger thermal element can be selected.
3. Heat relay in use, need to regularly wipe with cloth dust and dirt, bimetal pieces should keep luster, if there is rust, can use cloth dipped in gasoline gently wipe, but do not use sandpaper grinding.
4. The action mechanism should be normal and reliable, can be pulled for four to five times of observation, reset button should be flexible, adjust parts, not loose, if loose, should be tightened to browse more content, please log in and adjust again.When checking and adjusting parts, only gently touch with hand or screwdriver, not twisting or pushing.For the adjustable thermal relay, check the scale for the desired scale value.
5. The thermal relay wiring screws should be tightened, the contacts must be well touched, and the cover should be well covered.
6. When checking whether the thermal element is good, you can only open the lid to observe from the side, and do not remove the thermal element.If it must be removed, power on test adjustment after installation.
7. During use, power verification shall be verified once a year.In addition, after the equipment accident, and cause a huge short circuit current, the thermal element and bimetal sheet should be checked, whether there is obvious deformation.If the obvious deformation has been produced, need to power test adjustment, adjustment, absolutely can not bend bimetal sheet.
Post time: Mar-07-2022
