
2 | P a g e
Opening-Closing Function Check:
1. Manually push on the blades at the bottom from the front of the catch basin. Perform this at the
center and at each end of the device Please ensure all appropriate traffic control has been set up
and all appropriate safety procedures are followed based on local and state regulations, if required.
2. Observe if the tension is appropriate on the blades and that the return to the close position. Note
if any or all of the blades to not return to the close position.
3. Observe if the blades which are interconnecting work together. The blade being pushed on
should open the most and the adjacent blades should open slight less in an outward pattern as
shown below. Please note if any blades are moving or not moving outside of this pattern.
5. Check to see if the tensioner and cable/spring is properly connected behind each blade. Note any
issues related to the cable/spring not being connected.
Blades Maintenance/Adjustment/Replacement:
1. Verify which Blade is damaged and plan which faceplate is easiest and most efficient to remove.
2. Remove Faceplate from brackets and remove tension spring from back of unit.
3. Slide each blade off until damaged blade has been reached. Replace damaged blade or blades.
4. Feed tensioner spring through all the back clips and attach faceplate to top bar.
5. Secure tensioner spring on back of unit and secure faceplate to mounted bracket
LA-ARS Locking Screen: Torsion Spring and Adjustment Knob System Maintenance
1. Verify unit does not have damage blades and working properly
2. Check the status of the locking system making sure the system can tighten by first releasing the
unit by pressing on the releases on each side of the unit. If unit releases, proceed to next step
3. Check the status of the tension knob by clicking it tighter to make sure the unit tightens with
each click of the tightening knob. If unit tightens, maintenance is complete.
4. If unit does not tighten or release, remove faceplates from bracket and remove torsion spring
system. Both Torsion Spring and Adjustment knob units will need to be replaced.
5. Screw new torsion spring and adjustment knob system into place and place metal wire into
plastic holding system on back of each blade.
6. Test unit by tightening and releasing the locking system. If unit is working properly, reinstall
unit.