diff --git a/appsrc/service/test_page_mgr_service.cpp b/appsrc/service/test_page_mgr_service.cpp
index a6ca9e8..98e8a64 100644
--- a/appsrc/service/test_page_mgr_service.cpp
+++ b/appsrc/service/test_page_mgr_service.cpp
@@ -74,11 +74,11 @@ void TestPageMgrService::initialize() {
                                                                 logger->info("on AddDischargePumpCtrl.{}", buttonName);
                                                                 if (buttonName == "addingLiquid") {
                                                                   dcs->AddLiquidPump_stop();
-                                                                  usleep(100 * 1000);
+                                                                  usleep(500 * 1000);
                                                                   dcs->AddLiquidPump_addLiquid();
                                                                 } else if (buttonName == "drainLiquid") {
                                                                   dcs->AddLiquidPump_stop();
-                                                                  usleep(100 * 1000);
+                                                                  usleep(500 * 1000);
                                                                   dcs->AddLiquidPump_drainLiquid();
                                                                 } else {
                                                                   dcs->AddLiquidPump_stop();