Free electrical troubleshooting guide. POSITION WE CAN START BY CHECKING INCOMING POWER STEP 2: CHECK VOLTAGE AT THE NEXT STOP (CIRCUIT BREAKER), CHECK BOTH THE TOP AND BOTTOM. STEP 3: PUT THE HOA SWITH TO âHANDâ AND. CHECK VOLTAGE ON EACH SIDE OF THE MOTOR CONTACTOR CONTACTS, FIRST THE TOP, THEN THE BOTTOM. STEP 4: CHECK VOLTAGE AT THE PUMP CONNECTIONS. Basic Electrical Troubleshooting. A boiler feed pump being powered by two 3500 HP inducti on motors appears to be developing a problem. Failure of this pump will result in the loss of a generator currently producing half of the stationâs power output. Operators are complaining that a large compressor on several occasions has failed to start. TROUBLESHOOTING ELECTRICAL CONTROL CIRCUITS. About 70% of the time is spent working, hands-on, at a troubleshooting station with motor control circuits (operating at a safe, low level of 24 volts). This is a basic course, without any prerequisites, that. Helps you develop a solid foundation to build your troubleshooting knowledge and skills.
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