1. Seasonal maintenance for sand washers begins with replacing engine oil, lubricants, and adding coolant. It's also essential to inspect for any damaged parts in the bearings, as they undergo significant wear during operation. Utilize the seasonal maintenance to replace these damaged parts and add lubricant to extend the bearing's lifespan.

2. To ensure the normal operation of the sand washing machine during seasonal changes, we must enhance regular maintenance efforts; perform scheduled maintenance and check for any abnormal phenomena in the machine's various components. Additionally, remove dust and other debris, and avoid conducting repairs or cleaning during operation to prevent serious accidents.

3. With the cold weather setting in, if you notice any abnormal vibration or noise from the sand washing machine, immediately stop adding materials. After the material inside the box is completely drained, shut down the motor immediately and conduct a shutdown inspection. Only after the fault is resolved can the machine continue to operate. In case of an emergency, stop the motor first, and before starting up again, clear the cavity of materials and perform an empty-load start-up.