The summer rainy season. The cold winter is the snow season . Rain and snow season even more to pay attention to maintenance Manual Hoist to avoid corrosion of the main components in case of influx of rust , corrosion hand chain hoist is a direct result of the heavy chain hoists scrapped , so should not be underestimated . Manual hoist in response to its main components after use to clean , dry or even dry . Then the bearings and gear parts to grease lubrication ; chain hoists chain is easily corroded parts , and after the application of professional cleaning oil to lubricate the chain and placed in a dry environment , away from direct sunlight . Rain and snow outdoors lifting operations should be avoided , if not avoided, you must take certain precautions to avoid all kinds of accidents .