Index: firmware/App/Controllers/PresOccl.c
===================================================================
diff -u -rcc4f8440e8ad7fa8f2ced2467d922be7422c344c -raf435e7b6e37b1c03027e7b7c269e4fc853e3efc
--- firmware/App/Controllers/PresOccl.c	(.../PresOccl.c)	(revision cc4f8440e8ad7fa8f2ced2467d922be7422c344c)
+++ firmware/App/Controllers/PresOccl.c	(.../PresOccl.c)	(revision af435e7b6e37b1c03027e7b7c269e4fc853e3efc)
@@ -78,13 +78,13 @@
 #define ARTERIAL_PRESSURE_STALE_DATA        2                                               ///< Arterial pressure status bits indicate data is stale (no new data since last fpga read).
 #define ARTERIAL_PRESSURE_DIAG_CONDITION    3                                               ///< Arterial pressure status bits diagnostic condition (alarm).
 
-#define OCCLUSION_THRESHOLD_OFFSET          4000                                            ///< Threshold offset.  Combined with initial reading after cartridge install, a threshold is derived above which an occlusion is detected.
-#define OCCLUSION_CLEAR_THRESHOLD_OFFSET    4000                                            ///< Threshold offset.  Combined with initial reading after cartridge install, a threshold is derived below which an occlusion is cleared.
+#define OCCLUSION_THRESHOLD_OFFSET          5500                                            ///< Threshold offset.  Combined with initial reading after cartridge install, a threshold is derived above which an occlusion is detected.
+#define OCCLUSION_CLEAR_THRESHOLD_OFFSET    5500                                            ///< Threshold offset.  Combined with initial reading after cartridge install, a threshold is derived below which an occlusion is cleared.
 
 #define CARTRIDGE_LOADED_THRESHOLD          5000                                            ///< Threshold above which a cartridge is considered loaded.
 #define MIN_OCCLUSION_COUNTS                2000                                            ///< Minimum occlusion sensor reading for range check.
 #define MAX_OCCLUSION_COUNTS                32766                                           ///< Maximum occlusion sensor reading for range check.
-#define OCCLUSION_CARTRIDGE_LOADED_PRESSURE_READING_MAX         26000                       ///< Occlusion sensors maximum pressure reading limit when cartridge is considered loaded.
+#define OCCLUSION_CARTRIDGE_LOADED_PRESSURE_READING_MAX         24500                       ///< Occlusion sensors maximum pressure reading limit when cartridge is considered loaded.
 
 #define EMPTY_SALINE_BAG_THRESHOLD_MMHG     -300.0                                          ///< Threshold below which the saline bag is considered empty (in mmHg).  TODO - get real threshold from Systems
 static const U32 EMPTY_SALINE_BAG_PERSISTENCE = ( 250 / TASK_GENERAL_INTERVAL );            ///< Time that saline bag looks empty before saying it is empty.