Safety Guard Loading Test: Loaded with 1.5 M/T Test Load on the safety guard for 30 minutes continuously.安全架荷重检定：在安全架上放置1.5吨砝码，并持续一分钟。
When the pallet elevator bar was approaching the top of travel, the guide bar just inside the safety guard made contact 但在完成后他虽然将安全装置安装回去了，但却错误地将安全装置的下边缘安装到了升降机支架的内侧，而非应该安装到的支架的外侧。