修正UnLoadPurgeRoutine的Start()函数没有锁定Pump2的问题。

Modules/Mainframe/UnLoads/Routines/UnLoadPurgeRoutine.cs

@@ -74,12 +74,14 @@ namespace Mainframe.UnLoads.Routines
             _ventDelayTime = SC.GetValue<int>("UnLoad.Purge.VentDelayTime");
             _ventTimeOut = _pumpTimeOut;
 
+            LockPump2(out var reason);
+            
             if (!UnLoadDevice.CheckLidClose())
             {
                 EV.PostAlarmLog(Module, $"can not purge, lid is open");
                 return Result.FAIL;
             }
-            if (!TMDevice.SetFastPumpValve(false, out string reason))
+            if (!TMDevice.SetFastPumpValve(false, out reason))
             {
                 EV.PostAlarmLog(Module, $"can not purge, TM fast pump value can not close");
                 return Result.FAIL;