~

src/src/main/java/com/my/graphiteDigesterBg/diframe/actuator/DiActPeristalticPump.java

@@ -79,4 +79,11 @@ public class DiActPeristalticPump extends DiActuatorBase {
         this.call(DiCommand.MOTOR_EASY_MOVE_BY, distance);
         this.waitForFinish();
     }
+
+    // retract
+    public void retract() {
+        if ( null != this.retractionCircleCount && 0 < this.retractionCircleCount ) {
+            this.rotateByCircleCount(this.retractionCircleCount * -1);
+        }
+    }
 }