bugfix

@@ -185,7 +185,7 @@ public class MonitorService extends AbstractMonitorService{
     //60 second
     private static final int appRebootTimeout = 60;
     //30 second
-    private static final int heartBeatTimeout = 30;
+    private static final int heartBeatTimeout = 60;
 
     private StringBuilder buildMailContent(String ip, int screenType){
         StringBuilder sb = new StringBuilder();