diff --git a/src/specificClass.js b/src/specificClass.js
index ef00497..bacb65c 100644
--- a/src/specificClass.js
+++ b/src/specificClass.js
@@ -264,15 +264,26 @@ class PumpingStation {
       return;
     }
 
-    if (level > startLevel && direction === 'filling') {
-      const percControl = this._scaleLevelToFlowPercent(level);
-      this.logger.debug(`Controllevel based => Level ${level} control applying to pump : ${percControl}`);
-      await this._applyMachineLevelControl(percControl);
-      // Also forward to machine groups (e.g. MGC) — the level-based
-      // control originally only addressed direct-child machines, but in
-      // a hierarchical topology (PS → MGC → pumps) the machines sit
-      // under MGC and PS.machines is empty.
-      await this._applyMachineGroupLevelControl(percControl);
+    // Continuous proportional control: command pumps whenever level is
+    // above stopLevel. The percControl ramp gives:
+    //   - 0% at minFlowLevel (= startLevel) → pumps barely running
+    //   - linearly up to 100% at maxFlowLevel → all pumps full
+    //   - Below startLevel but above stopLevel: percControl < 0 → clamp
+    //     to 0 → MGC turns off pumps (graceful ramp-down instead of a
+    //     dead zone where pumps keep running at their last setpoint).
+    if (level > stopLevel) {
+      const rawPercControl = this._scaleLevelToFlowPercent(level);
+      const percControl = Math.max(0, rawPercControl);
+      this.logger.debug(`Controllevel based => Level ${level} percControl ${percControl}`);
+      if (percControl > 0) {
+        await this._applyMachineLevelControl(percControl);
+        await this._applyMachineGroupLevelControl(percControl);
+      } else {
+        // Between stopLevel and startLevel with percControl ≤ 0:
+        // tell MGC to scale back to 0 rather than leaving pumps
+        // running at the last commanded setpoint.
+        await this._applyMachineGroupLevelControl(0);
+      }
     }
 
     if (level < stopLevel && direction === 'draining') {