求翻译：因高压产生的挤压热，会使物料变色，用自来水或冷却水冷却，使压轮温度在＜45℃一下工作，水质一定清洁，否则容易堵塞通道，影响生产。是什么意思？

Extrusion from high pressure heat, will make the material to change color, with tap water or cooling, pressure and temperature in < 45 ° c, water must be clean, otherwise easy to plug the channel, affecting production.