starting preheater fire pan

例句：

1. 1. The engineer started the preheater fire pan to warm up the furnace.
   工程师启动预热器火盘来加热炉子。
2. 2.During startup, the machine needs to be checked for any potential issues.
   在启动过程中，需要检查机器是否有潜在问题。
3. 3. The technician quickly replaced the faulty part and restarted the preheater fire pan.
   技术员迅速更换了故障部件，重新启动预热器火盘。