Maintenance and upkeep of vulnerable components in fermentation tanks:
1、 Maintenance and upkeep
1. Precision filters typically have a lifespan of one year. If the filtration resistance is too high or the filtration capacity is lost, which affects normal production, it needs to be cleaned or replaced (it is recommended to replace it directly without cleaning, as the performance of the filter cannot be reliably guaranteed after cleaning operation).
When cleaning the fermentation tank, please use a soft bristled brush to scrub it, and do not use a hard tool to scrape it, so as not to damage the surface of the fermentation tank.
The supporting instruments should be calibrated once a year to ensure normal use.
Electrical equipment such as appliances, instruments, sensors, etc. are strictly prohibited from direct contact with water and steam to prevent moisture.
When the equipment is stopped, it should be cleaned in a timely manner and the remaining water in the fermentation tank and various pipelines should be drained; Loosen the fermentation tank cover and hand hole screws to prevent deformation of the sealing ring.
Carbon steel equipment such as operating platforms and constant temperature water tanks should be regularly (once a year) painted to prevent rusting.
Regularly check the oil level of the reducer. If the lubricating oil is insufficient, it needs to be increased in a timely manner.
Regularly replace the lubricating oil of the reducer to extend its service life.
If the fermentation tank is not in use temporarily, it is necessary to empty it and drain the remaining water in the tank and various pipelines.
II Precautions
1. It is necessary to ensure that all individual devices can operate normally when using this system.
When disinfecting the filter, the steam pressure flowing through the air filter should not exceed 0.17MPa, otherwise the filter element will be damaged and lose its filtering ability.
During the fermentation process, it should be ensured that the tank pressure does not exceed 0.17MPa.
During the actual consumption process, when the jacket is preheated with steam, the inlet steam pressure must be controlled within the working pressure range of the equipment (not exceeding 0.2MPa), otherwise it may cause damage to the fermentation tank.
During empty and actual consumption, it is necessary to drain the remaining water in the jacket of the fermentation tank. Otherwise, it may cause the inner cylinder of the fermentation tank to flatten, resulting in equipment damage; During actual consumption, it can also cause excessive condensation water, leading to dilution of the culture medium and inability to meet process requirements.
During the cooling process after the completion of air disinfection and actual disinfection, it is strictly prohibited to generate negative pressure inside the fermentation tank to avoid pollution and even damage to the equipment.
During the fermentation process, the tank pressure should be maintained between 0.03 and 0.05 MPa to avoid contamination.
During each operation, it is necessary to maintain the pressure in the air pipeline greater than the tank pressure of the fermentation tank, otherwise it may cause the liquid in the fermentation tank to flow back into the filter, block the filter element or cause the filter to fail.
If you encounter problems that you cannot solve on your own, please contact the company's after-sales service department directly. Do not forcefully disassemble or repair.
3、 Mixing mechanism maintenance:
This mixing mechanism consists of a motor, mixing shaft, mixing slurry, and coupling mechanism. A specially designed coupling is used at the upper end of the mixing shaft, which not only hangs the mixing shaft but also ensures its normal operation
Maintenance of mixer 2:
1) After each opening of the can lid, check and tighten the stop screws installed in each component of the mixing shaft.
2) Bearing replacement: After one to two years of use, if the bearing noise significantly increases or the mixing shaft shows obvious oscillation, the bearing needs to be replaced. Remove the end cover of the bearing seat, remove the shaft head screw and bearing cover, remove the lower end cover of the bearing seat, remove the retaining spring at the bearing at the lower end of the bearing seat, take out the mixing shaft from top to bottom, remove the bearing and replace it, and then install it in sequence.
4、 Filter replacement:
1. Replacement of filter element
Due to the presence of a large amount of dust in the air, the micropores on the filter element will gradually become clogged after a certain period of time. On the one hand, this can lead to a severe shortage of air flow and an increase in air pressure drop, while also potentially causing bacterial contamination. At this point, it needs to be replaced. Due to significant differences in air quality across regions, there is no exact lifespan. It is recommended to disinfect 20 batches.
5、 Maintenance of solenoid valve:
The main reason why the temperature only drops without increasing while ensuring the operation of the circulation pump and the smoothness of the circulation pipeline is that the solenoid valve leaks or the valve core is stuck
1. Electromagnetic valve is used for cooling fermentation tanks. The valve core of the electromagnetic valve is stuck, the sealing ring of the valve core fails, and the electromagnetic coil is damaged, all of which can cause the failure of the electromagnetic valve.
2. Fault diagnosis:
Cooling valve failure:
1) Press the water injection switch, the water injection switch indicator light is on, but the upper end face of the solenoid valve is non-magnetic, no cooling water is discharged, and the coil is damaged; The water injection switch indicator light is not on, and the F1 (Realy) fuse in the control box is burnt out.
2) Turn off the solenoid valve, there is coolant leakage from the drain outlet, the valve core seal fails or debris gets stuck in the valve core;
6、 Other maintenance:
1. Maintenance of ball valve: Due to the fact that the sealing components inside the ball valve are made of two hemispherical tetrafluoroethylene, there may be leakage between the sealing components and the valve core after prolonged use. Repair method: Loosen the sleeve joint nuts at both ends of the valve, and then tighten the cylindrical joints at both ends of the valve. (Under normal circumstances: there should be a certain resistance when rotating the valve handle)
Leakage of 2-card sleeve connector: simply tighten the pressure cap on the connector.
3 Air hoses: To prevent accidental bursting of the hoses connected to both ends of the air flow meter, it is recommended to replace all hoses every two years.
4. Maintenance of steam generator: Refer to the steam generator user manual.
5. Maintenance of air compressor: Refer to the compressor manual.