Calibrate Retro C Centerlines 1–5

Centerline calibration tells the Retro C the actual vertical position of each blade centerline. Recalibration may be required after position drift on an older screw-drive system, a power loss during movement, a lumber collision, mechanical service, or an incorrect calibration entry.

Safety: Keep personnel clear while the centerline and lumber move. Handle the cut test board only after the cycle is complete and the saw is in a safe state. Stop and use the advanced recovery procedure if the centerline is too far out to run this test normally.

Prepare a test board

1. Open Repair → Maintenance.
2. Select the centerline to calibrate.
3. Choose a straight 2 × 4 that can be used as a test board.
4. Measure the board, subtract approximately one or two inches, and enter that requested cut measurement in the popup.
5. Press Accept. The next message directs you to use Move to Position from the Cutting tab.

Cut the calibration board

1. Return to the main Cutting tab.
2. Select Move to Position and enter the requested setup.
3. Place the test board in the correct position and allow it to pass through the blades and discharge.
4. After the cycle is complete, place the board on a stable surface and measure it with a square.

Measure blades 1 and 4

Blades 1 and 4 are bottom-cutting blades. Use the square to measure the missing space on the correct side of the test cut. In the example below, the measurement is correct at 1-12, so no calibration change is needed.

Measure blades 2, 3, and 5

Blades 2, 3, and 5 are top-cutting blades, so measure from the opposite side. The example below is 1/4 inch too high. Always enter the actual measured position, not merely the amount of error.

Enter the measured position

1. Return to Repair → Maintenance.
2. Select Set Centerline for the affected centerline.
3. Enter the actual measurement in feet-inches-sixteenths format. For example, an actual two-inch measurement is 0-2-0.
4. Press Accept.

Verify the calibration

1. Cut a second test board using the same process.
2. Measure from the correct side for that blade number.
3. Confirm that the actual cut matches the requested measurement.
4. Repeat the test to confirm that the position is stable and does not drift.

If the centerline is outside its allowable range, cannot move to the test setup, or repeatedly loses calibration, use Advanced Centerline Recovery under Enventek Support direction and inspect the mechanical drive and position feedback.

What Correct Looks Like