Adjusting The 90° And Mast Stowed Limit Switches; Diagnostic Leds On The Base Pc Board - Will Burt Night Scan Chief Series Operating Instructions Manual

NIGHT SCAN CHIEF
OPERATING INSTRUCTIONS
Frequency
Every 6 Months Extend the mast to the 90° position
and make sure the mast is rigidly
driven into the rubber pad below the
mast. There should be no mast wob-
ble observed when pulling on the
base tube.
Yearly Test the function of the emergency
stop button to ensure it is working
properly.
7.5 Adjusting the 90° and Mast Stowed Limit Switches
Before delivery of a new system, all switches are properly set and tested at the factory and nor-
mally no switch adjustment is necessary. However, if a switch needs adjusted, for example if the
actuator was replaced or if the mounting surface is not flat, follow the steps outlined in this sec-
tion to make the adjustment.
7.5.1

Diagnostic LEDs on the Base PC Board

The PC Board mounted at the mast Base has LED indicator lights useful for diagnostics for cir-
cuits. Table 7-2 charts the colors of the relevant diagnostic LEDs for the various mast positions.
An example of the diagnostic LEDs showing the mast in the stowed position is shown in Figure 7-
1. These diagnostic LEDs can be used to help determine if an adjustment is necessary, for exam-
ple if D7 / D8 shows Yellow when the mast is supposed to be stowed. They are also useful in
assisting to determine when the switches have been properly adjusted.
Table 7-2 Mast Positions Shown by Diagnostic LEDs
Mast Position
Mast Stowed
Mast Between 0° and 90°
Mast at 90°
Mast Fully Extended
PAGE 44 OF 80
Table 7-1 Periodic Inspections (Continued)
Inspection
D7/D8
Green
Yellow
Yellow
Yellow
Action
If the mast shows mechanical play,
adjust the mast 90° limit switch
according to Section 7.5.2.
Replace defective parts.
D10/D11 D13/D14
Green Green
Green Green
Yellow Green
Yellow Yellow
TP-4602001-T
DECEMBER 2020