Now we have to carry out the daily maintenance and calibration of the stone grinder. In the maintenance, we need to pay special attention to the factors that affect the inspection results, such as dust, temperature, humidity, vibration, noise, corrosion and so on. We should strictly control them to reduce the error. And also to ensure that all the instruments in the table fixed and flat, in line with the use requirements.

每台石磨磨粉机都有相应的工作规范和操作规程及简单的故障排除方法，需要制定所有设备的一个台帐，以及一个检定周期的计划表等，并还要设置专人对这些进行管理，确保落实到位。从而正确的使用以及保养维护各设备与仪器。

Each stone mill has its own work specifications, operating procedures and simple troubleshooting methods. It is necessary to establish a standing book of all equipment and a verification cycle schedule, and set up a special person to manage these to ensure the implementation. So that the correct use and maintenance of the equipment and instruments.

有些朋友遇到石磨豆腐机轴承噪声问题，这是怎么回事？因为轴承在运转中都会发出一定的声响。若石磨豆腐机轴承运转正常，其声音为连续而细小的“沙沙”声，不会有忽高忽低的变化及金属摩擦声。若出现以下几种声音则为正常现象。

Some friends encounter the bearing noise problem of stone mill tofu machine. What's the matter? Because the bearing will make a certain noise in operation. If the bearing of tofu mill works normally, its sound is continuous and small "rustle", and there will be no change from high to low and metal friction sound. The following sounds are normal.

一种是轴承运转时有“吱吱”声，这是金属摩擦声，一般为机器轴承缺油所致，应拆开轴承加注适量的润滑脂。

One is that there is a "squeak" sound when the bearing is running, which is the metal friction sound. Generally, it is caused by the lack of oil in the machine bearing. It is necessary to disassemble the bearing and add an appropriate amount of grease.

第二种是若出现“唧哩”声，这是由于滚珠转动时所发出的声音，一般为润滑脂干涸或缺油引起，可加注适量油脂。

The second is if there is a "chirp" sound, which is caused by the sound when the ball rotates. Generally, it is caused by the grease drying up or lack of oil. You can add an appropriate amount of grease.

第三种是若出现“喀喀”声或“嘎吱”声，则为轴承内滚珠不规则运动而产生的声音，这是机器轴承内滚珠损坏或电动机长期不用，润滑脂干涸所致。

The third is that if there is a "click" or "creak" sound, it is caused by the irregular movement of the ball in the bearing, which is caused by the damage of the ball in the bearing of the machine or the long-term use of the motor and the drying up of the grease.