Cold storage is a low temperature and closed operating environment, the temperature is usually maintained below 0 ° C, and some ultra-low temperature cold storage can even reach about -30 ° C. This environment will affect the battery, hydraulic system, electronic control components, etc. of the lithium battery forklift to varying degrees. If the daily maintenance is not in place, it will not only shorten the service life of the equipment, but also may cause hidden dangers in operation safety. Therefore, it is crucial to master the targeted daily maintenance methods.
Battery system special project maintenance
Control the charging environment and frequency
In a low temperature environment, the activity of lithium batteries will be significantly reduced, and the charging efficiency and discharge capacity will be affected. During daily charging, it is recommended to transfer the forklift to a normal temperature environment (10 ° C -25 ° C) to avoid direct charging in a low temperature environment to prevent damage to the battery cells. At the same time, to avoid excessive discharge, replenish the power in time when the power is about 20% remaining to reduce the loss of the battery caused by deep discharge at low temperature.
Regularly check the battery status
Before daily operation, it is necessary to check the appearance of the battery for bulging, liquid leakage, whether the terminal is firm, and whether there is oxidation and corrosion. If the terminal is found to be oxidized, you can clean it with a dry brush and apply a special protective agent to ensure that the circuit connection is stable. In addition, professional equipment is required to monitor the temperature and voltage of the battery to ensure that various parameters are within the normal range.
Hydraulic and brake system maintenance
Select hydraulic medium suitable for low temperature
Low temperature will cause the viscosity of hydraulic oil to increase, affecting the response speed and operation efficiency of the hydraulic system. Therefore, it is necessary to choose hydraulic oil that meets the requirements of low temperature environment to ensure good fluidity at low temperature. When changing seasons, replace the hydraulic oil in time, and replace the filter element at the same time to avoid impurities blocking the pipeline.
Check piping and braking performance
Before daily operation, check the hydraulic pipeline for damage or leakage, and tighten the loose pipe joints. For the braking system, check the liquid level and quality of the brake fluid. If the brake fluid is turbid or deteriorated, replace it in time. At the same time, test the braking performance to ensure that the braking is sensitive and reliable at low temperatures, and avoid safety accidents caused by slow braking.
Electronic control and electrical component protection
Do a good job of moisture-proof and anti-condensation treatment
The ambient humidity of the cold storage is high, and it is easy to produce condensate at low temperatures, which will cause corrosion to the electronic control components and electrical circuits. The inside of the electronic control box should be cleaned regularly every day to keep it dry. A desiccant can be placed in the box to absorb moisture. Check whether the insulating layer of the electrical circuit is damaged. If any damage is found, replace it in time to prevent short circuit failure.
Body and structural inspection
Check for structural damage
The toughness of metal materials will decrease in low temperature environment, and it is prone to cracks and deformation. Weekly comprehensive inspections of forklift frames, forks, door frames and other structural parts are required to check for signs of cracks, welding or deformation. If damage is found, stop operations and carry out repairs in time to prevent safety accidents caused by structural failure.
Routine maintenance after operation
Timely cleaning and parking
After the operation, it is necessary to clean up the frost, cargo residue, etc. on the forklift in time to avoid the residual moisture freezing at low temperature and affecting the normal operation of the parts. Park the forklift in the designated area, and if conditions permit, try to park it in the room temperature warehouse to reduce the continuous impact of the low temperature environment on the equipment.
