Precautions for Use

1. The controller protective box (MC9) is a dust- and splash-proof structure equivalent to IP54. However, it has not been designed to withstand explosions, so avoid installing the protective box in any environment where:
   - there are any flammable gases or liquids,
   - there are any acidic, alkaline or other corrosive gases,
   - there are any large-sized inverters, high output/high frequency transmitters, large contactors, welders, or other sources of electrical noise,
   - the ambient temperature is out of the range from 0°C to 40°C,
   - the protective box is directly exposed to rains,
   - the protective box is directly exposed to water, oil, grinding chips or shavings,
   - there are any grinding or machining chips or shavings.
2. Clean the filter once for two weeks.
3. Sealing performance may degrade due to aging or other reasons. If the sealing performance of this product deteriorates, tighten the set screws on the top plate A and top plate B. In the event of water ingress into the controller protective box (MC9), remove the drain hall screws to drain water.
4. The controller protective box (MC9) has no power switch, so externally turn the controller power on and off.
5. To reduce the risk of electric shock, observe the following precautions.
   - Do not supply power from the facilities during wiring, controller connection, and controller disconnection.
   - Do not open the top plate A, top plate B, and the terminal cover during energizing.
   - Do not touch the inside parts within six minutes from the power OFF.
   - Do not touch the power terminals board (circled area in the image below) during other than wiring operation.
   
6. Using voltage beyond the specified range may damage the controller protective box or reduce the lifetime.
7. If an abnormal temperature is detected, check that whether the internal fan and the external fan of the controller protective box (MC9) works correctly.
8. Fans are placed in the bottom and the inside of the controller protective box (MC9). To avoid injury, do not insert fingers or any body parts into the fans, nor transport during energizing.