Adjusting The Rcp Home Position - Will Burt Night Scan Powerlite Operating Instructions Manual

NIGHT SCAN POWERLITE, POWERLITE XTREME, AND POWERLITE HDT
7.6

Adjusting the RCP Home Position

The RCP home position is the position of the RCP and lights where the light bars are parallel to
the axis of the mast and the lights are facing down when stowed. If the RCP home position is set
properly, when being stowed the RCP shafts should contact the saddle simultaneously. The
home position is established by positioning small flags in the RCP that engage photo interrupters
on the RCP PC board. Adjusting the RCP home position should be done indoors. Adjusting the
home position outside can cause improper RCP operation due to sunlight reaching the photo
sensors. Before delivery of a new system, the RCP home position is adjusted and tested and
normally no adjustment is necessary.
If an adjustment is required, adjust the RCP home position as follows:
1. Disconnect all light power to the system using proper lock-out tag-out procedures (see
Section 7.1). Keep the DC power connected to the mast control system.
2. Initiate the mast and raise the mast to the 90° position. Ensure that the "Pan Right" and "Tilt
Down" controller LEDs turn on.
3. Remove the RCP cover to access the flags. The flags are attached to the timing rings on the
horizontal and vertical shaft gears (Figure 7-3). Each timing ring has two set screws that must
be loosened. It may be necessary to loosen one in each, then pan and tilt the unit to access
the others. Note: The flags have sharp edges which may cause cuts.
Figure 7-3 RCP Tilt Flag Example (RCP cover removed)
4. Once the set screws are loose, pan and tilt the unit to the correct home position. Be careful
that the flags do not come into contact when panning and tilting, or they may be bent.
5. The pan and tilt functions have two photo sensors for each function. It is important that the
flags engage the correct photo sensor from the proper direction when setting the home
position (Figure 7-4). To set the Tilt Home Position, turn the timing ring on the tilt shaft such
TP-4723701-U
MAY 2021
OPERATING INSTRUCTIONS
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