Electricity is dangerous and can kill you. Never attempt to service any electrical panel during bad weather. Wear all appropriate personal protective equipment. Exercise caution when troubleshooting your panel. Most panels manufactured by EG controls have an inner door protecting operators from the industrial equipment inside. Verify breakers are not tripped and no fault lights are illuminated on the inner door. Only qualified personnel should open the inner door and service industrial control panels.
- Is there a burnt smell?
- Is any equipment buzzing loudly?
- Does any equipment look damaged?
If there is anything that fails the sensory inspection, it is important to find out why that happened. EG Controls stocks replacement parts for your panel. You can order replacement parts here. Is your panel missing it’s control drawing? You can request a drawing here.
General power circuit trouble shooting.
- Check incoming breakers to make sure they are not tripped.
- Measure incoming voltage with a meter. You should observe voltage within 2% of the panel’s rating.
- If your panel is 3 phase, measure all phases.
If breakers are not tripped but voltage is out of range or a phase is missing, the problem is ahead of the panel. Your panel may have a voltage and or phase monitor preventing operation and equipment damage.
General motor circuit trouble shooting.
- Check breakers or motor starter protectors to make sure they are not tripped.
- If your panel has across the line starters, verify the overload does not need to be reset.
- If your panel has VFDs or soft starters, check for LEDs indicating power is on and a fault light is not on.
If breakers are not tripped and motor starters are correct, there may be a problem in the control circuit.
General control circuit trouble shooting.
- Check control breakers to make sure they are not tripped.
- Check fuses to make sure they are not blown.
- If your panel has a control power transformer(s), verify the voltage on the secondary is correct.
- If your panel has power supplies, check for LEDs indicating they are on and verify the output voltage is correct.
If breakers are not tripped and transformers and or power supplies are outputting correct voltage, there may be a problem in the control circuit.
Control circuit trouble shooting.
- Verify wires have not been pulled out of their terminations.
- Verify devices such as relays have not become unseated.