diff --git a/SicRT/Equipments/ReturnAllWafer.cs b/SicRT/Equipments/ReturnAllWafer.cs
index 051adedd..5bc0c69b 100644
--- a/SicRT/Equipments/ReturnAllWafer.cs
+++ b/SicRT/Equipments/ReturnAllWafer.cs
@@ -877,8 +877,10 @@ namespace SicRT.Modules
                 // Cooling
                 if (!_unload.CheckCoolingCompleted())
                 {
-                    GetWaferSequenceCoolingTime(_unload.Module, 0, out var coolingTime);
-                    _unload.Cooling(true, coolingTime);
+                    //GetWaferSequenceCoolingTime(_unload.Module, 0, out var coolingTime);
+
+                    //ReturnAll里Unload冷却时间定为300s
+                    _unload.Cooling(true, 300);
                     return;
                 }