The daily maintenance work of the generator set is divided into four levels of maintenance (level A maintenance, level B maintenance, level C maintenance, and level D maintenance). Level A maintenance 1. Daily: 1) Check the generator’s daily work report. 2) Check the generator: oil level, coolant level. 3) Daily check whether the generator is damaged or leaked, and whether the belt is loose or worn.

According to news reports, Qingdao currently has 23 sewage treatment plants in operation, with a total treatment capacity of 1.7 million cubic meters per day. The annual biogas power generation capacity of Maidao Sewage Treatment Plant is more than 9 million kilowatt-hours. Based on the average annual electricity consumption of 1,200 kilowatt-hours per household in Qingdao, it is equivalent to the annual electricity consumption of 7,000 households. According to reports, Qingdao's sewage treatment plant leads the country in sludge digestion and stabilization, biogas power generation, and waste heat recovery and utilization. The China Urban Water Supply and Drainage Association plans to hold an on-site meeting in 2016 to promote Qingdao's experience. The reasonable disposal and comprehensive utilization of sludge, biogas and waste heat have significant economic, social and environmental benefits. Taking Maidao Sewage Treatment Plant as an example, the sludge generated during the sewage treatment process is reduced, stabilized and harmlessly treated through the anaerobic digestion process, achieving a sludge reduction of nearly 40%, which greatly saves sludge transportation and follow-up. disposal costs; anaerobic digestion produces about 6 million cubic feet of biogas annually.

After summarizing years of unit experience, generator manufacturers have also summarized some reliable methods for estimating the price of second-hand diesel generator sets. The following diesel generator manufacturers will share this method with everyone. The method can be based on the method of first asking, second looking, and third testing, with testing as the main method. First question: It is to ask about the purchase time, purpose and reason of sale of the diesel generator set, the repair status and the main parts that have been replaced, and what problems there are in use, etc., so as to have a more comprehensive understanding of the machine. The second look: first check whether the model is obsolete, then look at the condition of the diesel generator set from the outside, and check whether the parts are complete and whether there is any damage. Third test: Test the machine. The specific steps are: 1. Shake the flywheel up and down. If there is no sound or obvious shaking, it means that the gap between the crankshaft main journal and the bearing bush is not large; turn the flywheel. If there is no clicking sound, it means that the crankshaft connecting rod shaft The wear between the neck and the connecting rod shoe is not serious. 2

Diesel generator set must be inspected before test run ◎ The steps for inspection before diesel engine test run are as follows: 1) Check whether the surface of the diesel generator set is clean; whether the anchor nuts, flywheel screws and other moving parts nuts are loose, and find out problems Tighten in time 2) Check whether the clearance of each part is correct. In particular, carefully check whether the clearance of each inlet and exhaust valve and the clearance of the pressure reducing mechanism meet the requirements. 3) Place each cylinder in the decompression position, rotate the crankshaft to check whether there are any abnormal sounds in the operation of each cylinder's parts, and whether the crankshaft rotates freely. At the same time, pump oil into a friction surface, then close the decompression mechanism and shake the crankshaft. Check whether the cylinder is leaking. If it feels laborious when shaking the crankshaft, it means the compression is normal. 4) Check the condition of the fuel supply system. The steps are as follows: Check whether the ventilation hole on the fuel tank cap is smooth. If there is dirt in the hole, clean it out. Check whether the diesel fuel added meets the required grade, whether the oil quantity is sufficient, and whether it is

When the battery of the diesel generator set has not been used for a long time, it must be properly charged before use to ensure the normal capacity of the battery. (The actual capacity of the battery can be detected through a hydrometer) Normal operation and charging will cause some water in the battery to evaporate, which requires frequent rehydration of the battery. Before rehydration, first clean the dirt around the filling port to prevent it from falling into the battery compartment, and then remove the filling port. Open and add appropriate amount Do not overfill the distilled or purified water (based on the scale on the battery plate). Otherwise, when the battery is discharging/charging, the electrolyte inside the diesel engine will gush out from the overflow hole of the filling port, causing damage to the surroundings. Corrosion damage to objects and environment. Avoid using the battery to start the unit at low temperatures. The battery capacity will not be output normally in low temperature environments, and long-term discharge may cause battery failure (cracking or explosion). The batteries of the standby generator set should be maintained and charged regularly and can be equipped with a float charger. diesel fuel

The editor reminds customers to be careful of the eight major traps that should be paid attention to when purchasing diesel generator sets. 1. Confusing the relationship between KVA and KW. Treat KVA as KW to exaggerate the power and sell it to customers. In fact, KVA is the apparent power and KW is the effective power. The relationship between them is IKVA=0.8KW. Imported units generally use KVA to express the power unit, while domestic electrical equipment is generally expressed in KW, so when calculating power, KVA should be converted into KW at a 20% discount. 2. We do not talk about the relationship between long-line (rated) power and backup power. We only talk about 'power' and sell the backup power to customers as long-line power. In fact, reserve power = 1.1x long line power. Moreover, the backup power can only be used for 1 hour out of 12 hours of continuous operation. 3. The power of the diesel engine is configured to be the same as that of the generator in order to reduce costs. In fact, the industry generally stipulates that diesel engine power ≥ generator power 10%, because

The manufacturer believes that this problem may be caused by damage to the fuse or rectifier diode. When the fuse is blown, the charger's power indicator light does not light up; after the rectifier diode is damaged, the charger's power indicator light turns on, but there is no DC output. 1. The charger transformer is burned out. 2. The diode on the charger is burned out. 3. The charging ammeter of the charger is damaged. 4. The fuse of the charger is burned out. The troubleshooting method is: disconnect the connection line between the charger and the battery, use a multimeter with a DC voltage range (50V) to test the voltage between the two output terminals of the charger. Note that the red test lead is connected to the positive pole of the charger, and the black test lead is connected to the negative pole. No voltage output was found. Remove the charger casing and check the charging fuse. It is found that the 60A fuse is burned out. After replacement, the charger resumes normal charging and the fault is eliminated.

When a diesel generator set is shut down, it is mostly because the unit has been in a static state for a long time. The various materials of the unit itself will undergo complex chemical and physical changes with the oil, cooling water, diesel, air, etc. This is mainly manifested in two aspects, which are summarized as follows: : The filtration capacity of the filter decreases. The filter plays a role in filtering diesel, engine oil or water to prevent impurities from entering the body. Oil dirt and impurities are also inevitable in diesel, so during the operation of the unit, the filter plays a role. important role, but at the same time these oils or impurities are also deposited in On the filter wall, the filtration capacity of the filter will be reduced, and there will be too much sedimentation, and the oil circuit will not be smooth. In this way, when the oil machine is running under load, it will go into shock due to the inability to supply oil (like a person lacking oxygen). Therefore, during normal use of the generator set Among them, the editor of the diesel generator public platform recommends: 1. Every 500 for commonly used units Replace the third filter every hour; 2. Replace the third filter of the backup unit every two years. Cooling system