Inspect and clean the re-ref sensors

WHAT YOU NEED 

Tools:Allen Key SetSecurity Torx Key SetSmall Flat Head ScrewdriverSmall Phillips Head ScrewdriverLoctite Low Strength Threadlocker

Spare Parts:Banner Laser Emitter - EL1023 (if needed)Banner Receiver - EL1024 (if needed)Metal Pinhole Mask - EL1022 (if needed)

Safety Equipment:Standard Personal Protective Equipment

Other Equipment:Damp cloth

ClosedInspection and cleaning

  1. Perform the following checks:

    • Gently move the cable of each re-ref sensor and check for any signs of beam wobble when the cable is moved.
    • Inspect the re-ref sensors for any initial signs of damage or misalignment.
    • Make sure the green power LED on each emitter and receiver is on.
    • Check the strength and alignment of the laser beams on the receiver side by placing a thin strip of timber in front of each emitter. The beam should be clearly visible and roughly in the centre of the receiver.
    • Make sure the orange sensing LED on each receiver turns on when the beam is interrupted.
    • Make sure there is a metal pinhole mask fitted to all emitters.

  2. If any of the checks are not met, press the E‑stop button on the operator console and perform the following tasks accordingly:

    • Replace any damaged or faulty emitters and receivers with spare ones. Apply a small amount of Loctite on the mounting bolts.
    • If the beam is dull, clean the face of the emitter with a damp cloth. Remove the fitted mask if necessary and refit after cleaning. If this does not help, replace the emitter with a spare one.
    • If the beam is off centre, adjust the alignment of the emitter.
    • If any metal pinhole mask is missing, install a spare one.

ClosedTesting

CAUTIONWhen using the manual mode, make sure that everything and everyone is clear of moving parts to prevent damage or injuries.

  1. Release the E‑stop button on the operator console.
  2. Open the Manual Mode window.
  3. Feed a straight 6‑m-long timber into the saw so that Re-Ref Add in the Manual Mode window reads "0".
  4. Set the feeder speed to 20%.
  5. Use the appropriate Left & Right drive button to move the timber towards the re‑ref sensors on the infeed conveyor, and check that the Re-Ref Add value is changing from 0 to 6 as the timber passes through each beam.
  6. Use the other Left & Right drive button to move the timber back towards the saw chamber, and check that the Re-Ref Add value is changing from 6 to 0 as the timber passes through each beam.

    Note: if Re-Ref Right Err or Re-Ref Left Err shows a value greater than 0.05 mm, a calibration of the re‑referencing system must be performed.