1. Preparation before starting:
(1) Check whether the protective railing covers of flywheel and generator are in good condition;
(2) Operators should have a clear division of labor, implement supervision, and wear insulating shoes;
(3) After sending the "ready" start-up signal to the staff in the electrical room, carefully check the gearbox, clutch, governor crankshaft control, oil level, and fastening screws of each part to confirm that they are correct, and the oil and water temperature is not lower than 20 ℃, can start;
(4) The pipeline gate of each system shall be in the working position;
(5) The connecting bolts of the transmission mechanism shall be fastened well;
(6) Check whether the pressure of the gas cylinder is normal and whether the overspeed safety device is positioned;
(7) Set the clutch handle to the starting position and open the drain valve of the scavenging pump;
(8) Start the external circulating water pump, oil pump and fuel pump. When the circulating water and oil pressure meet the requirements, one person shall operate and one person shall assist in starting.
2. Start-up and operation of diesel engine:
(1) If the generator is stopped for more than 24 hours, the test valve must be opened and the lubricating oil pump must be started. For the generator that has been stopped for a long time (usually for seven days), the exciter shall measure the insulation resistance of the motor and the operating circuit to meet the requirements. Manually turn the turning gear for 1~2 circles, freely start the motor and drive the diesel engine to idle for several circles to discharge the oil and water in the cylinder, then close the trial valve and close the front clutch;

(2) Start the fuel pump and release the air in the pipeline. The oil pressure should be within the specified range before it can be officially started;
(3) Check whether the voltage of the starting power supply is normal, press the "start" button and release it after the diesel engine catches fire. When the lubricating oil pressure rises above the specified value, stop and start the oil pump. Close the drain valve of the scavenging pump, and install the front clutch pin;
(4) When it cannot be started, the reason should be carefully determined. The reason is unknown and it should not be started again. The continuous starting shall not exceed three times, and the interval shall not be less than 2 minutes. If the third time still cannot be started, it shall be carefully analyzed and checked. After confirming that the fault is eliminated, the fourth starting is allowed;
(5) After the generator is started, it is considered that the generator and all electrical equipment have been charged. It is strictly prohibited for human body to contact the live parts. If live work is required, the approval system for hazardous work and the safety operation procedures for electricians should be observed;
(6) When adjusting the speed of the diesel engine, attention should be paid to whether the generator is running normally. The carbon brushes on the slip ring and commutator should have no beating, no sparks, and no abnormal sound. In addition, they should cooperate with electricians. Adjust the frequency and voltage to make it close to the rated value;
(7) When receiving the "ready to parallel" signal, the generator operation must be normal and stable. Moreover, only when the frequency is equal, the voltage is the same, the phase is the same, and the phase sequence is consistent can parallel work be carried out. When parallel, the synchronous table shall prevail, further adjust the speed and adjust the excitation. Raises the voltage and frequency to be close to the system voltage and frequency. When the damage of automatic excitation is changed to manual, the load should not be too large, and the relevant working parameters should be monitored at any time. The parallel synchronous operation steps are as follows: 1) close the knife switch of the generator outlet;
2) If the generator is powered by three-phase four-wire system, the neutral grounding switch shall be closed;
3) close the synchronous indicator switch, check the phase sequence, and further adjust;
4) Carefully check the signal of the synchronization indicator. If it is basically synchronized, immediately close the main switch and send power to the system. When automatic quasi-synchronization device is used in parallel, refer to the instructions. When the manual quasi-synchronous parallel operation is adopted, if the synchronization table is found to be jumping (or not moving), the synchronization indicator flashes without rules (or the brightness is unchanged), and the parallel closing is not allowed;

(8) During normal operation, it is strictly prohibited to use the fault stop switch or button, and it is strictly prohibited to wipe the unit. If the overspeed safety device of the diesel engine is found to be disconnected, the electrician should be notified to unload the load. After stopping, the overspeed safety should be restored to its original position and then started;
(9) Pay close attention to the working conditions of various operation instruments, protection devices, insulation monitoring and governor;
(10) For air tanks started with compressed air, check whether the test pressure gauge and safety valve are sensitive and reliable.
3. Parking and maintenance:
(1) After receiving the signal of "ready to disconnect", decelerate and unload. "After disconnecting", make the machine slow down and cool down gradually, and stop after listening to whether the machine has abnormal sound and determining its position and reason; (2) Shut down the fuel pump normally (fault shutdown or emergency shutdown can be used in special cases), and shut down the external circulating water pump;
(3) When parking for more than 1 hour, the car must be dumped; (4) After parking, according to the operation situation, maintenance should be carried out to keep the equipment in good condition and clean and sanitary;
(5) A comprehensive inspection of each operating part of the diesel engine should be carried out at least once a week, and problems should be dealt with in time.
4. Precautions:
(1) The personnel on duty must stick to their posts, do their job well, listen, watch and check frequently, and strictly abide by the operating procedures;
(2) The personnel on duty should fill in the shift handover records carefully. Problems in the operation of the unit shall be handled on duty and written explanation shall be made to the next shift in detail. For key issues to report to the leadership in a timely manner;
(3) After the tools used are used up, count and locate the lost and forgotten tools and parts;
(4) No smoking in the main engine room, keep the workplace clean, and actively take measures to eliminate noise.