Command Light K.L450A, Manual, Page: 17 / 36

USER GUIDE
17
Maintenance
Cleaning
The KNIGHT
2
is constructed with corrosion resistant aluminum and stainless steel
fasteners. To further enhance corrosion resistance all exposed surfaces receive a powder
coated paint finish. To ensure years of trouble free service periodically clean all external
surfaces with a mild detergent solution and a gentle spray of water.
DO NOT USE A
HIGH-PRESSURE WASHER , which will force water into sensitive electric circuitry.
Lamp lenses may be cleaned with any commercially available glass cleaner.
Upper and lower stage actuators are sealed units and do not require adjustment or
lubrication. The actuators have slip-clutches to compensate for minor stroke tolerances at
the limits of its travel as well as internal limit switches. The actuator may produce a
ratcheting sound at each end of the stroke which is normal. The actuators should not be
made to ratchet excessively, this can lead to premature actuator clutch failure.
All pivot points on the KNIGHT 2 are self-lubricating thermal polymer. Periodic cleaning
with a moisture displacing cleaner and soft bristle brush, without disassembly, to remove
accumulated dirt and debris will minimize wear.
Center Switch Adjustment
1. From a nested position, raise the lower section of the KNIGHT 2 until there is room to
access the center switch on the bottom of the mid-plate.
2. Verify that the centering cam attached to the spindle is activating the center switch.
3. Loosen the single screw holding the pointed centering cam in place.
4. Slide the centering cam so its point is directly against the center switch and ensure there
is some play in the center switch arm. Without this play, the switch could be crushed or
damaged during rotation.
5. Slide the cam in the counter-clockwise direction when viewing from below until the
centering cam does not engage the center switch.
6. By watching the center indicator light (green light on the holster), slowly move the
centering cam in the clockwise direction when viewed from below until the center
indicator light activates. You might also hear a soft click in the center switch when
activated.
7. Once the centering cam is at the point where it starts activating the center switch, hold the
centering cam in place and tighten the mounting screw.
8. Rotate off center and activate the Auto Park sequence. Watch where the angled point of
the lamp tree aligns with the main lift arm when the lower stage lowers.
9. If the center switch is adjusted properly, the lamp tree will come down slightly off center.
As the angled point of the lamp tree lowers into the lift arm, the centering cam will be
rotated more fully onto the center switch. This will ensure the center switch is fully
activated in the nested position
10. If problems adjusting center still persist you may need to adjust the center switch bracket,
or call Command Light for technical assistance at 1-800-797-7974.