(1) Preparations before start-up
Unit installation is completed, according to product skill requirements for comprehensive inspection. Acknowledging that the equipment is installed correctly, the line is correct, the operation part should be sensitive, the moving parts should not be stuck, and the spare parts are complete and reliable before they can be ready for operation.
Installation and operation of fasteners should be flexible. Cable wiring is not loose, and the gap between positive and negative poles of battery wiring should be greater than 150 mm to avoid sparks due to collision.
For units initially put into operation, the cold insulation resistance of each electrical circuit to the ground and between the circuits should be measured. It can be measured by 500V megohm meter (at this moment, the connecting wires of semiconductor devices, capacitors and other weak electric components in the electrical part of natural gas machine should be disconnected), and the measurement results are not less than 2M.
Before operation, phase sequence test should be done to ensure that the phase sequence of the unit is the same as that of other machines or power grids.
All electrical switches and conditioning knobs shall be located at the corresponding stop position.
Operating screen battery and electronic governor power switch is "on" position, press the test alarm button to check whether the alarm lights and sounds are normal. If it is found that the lights do not flicker or sound, it should be checked and swept or replaced. Press muffler and alarm exemption button at the end of viewing to restore the alarm signals.
For the preparation of natural gas engine before starting, please refer to the Protection Manual of natural gas engine, and check the preparation of lubrication, cooling, gas source, start-up and operation systems. Generators and control screens are also prepared before starting according to the requirements of operation instructions.
(2) Boot-up operation
Boot-up operation can be carried out at the side of the machine, but also at the control screen.
Note: During the operation, pay attention to observe whether the oil, water and gas of the unit are normal.
Close the pre-supply switch and start the electric pre-supply pump (or pull the hand-cranked oil pump). When the main oil pressure reaches 100kPa, press the start button. After the unit starts, release the start button and disconnect the start switch immediately. The start-up time of the unit is 5 seconds each time. If three successive start-ups are unsuccessful, the cause should be checked and the fault should be cleared before starting.
After the engine is running, the page-turning button can be pressed to check the changes of various technical parameters in the engine operation through the LCD screen. After successful start-up, idle warmer should be used. When oil temperature and water temperature reach above 40 C, it can be accelerated and loaded.
Press or adjust the acceleration and deceleration knob on the control panel to adjust the frequency of the unit slightly higher than the additional frequency. Adjust the fine-tuning knob of the voltage regulator on the control panel, so that the communication voltmeter is at 400 V position, close the main switch, and the unit will supply power to the load.
If the voltage and frequency of the unit deviate from the extra value after on-load operation, the adjusting speed knob and the voltage setting potentiometer are separated to make the voltage frequency reach the extra value.
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