VALVE GP-RELIEF 3G9020 - Caterpillar

The display allows you to see the settings that are configured and the devices that are connected to the AccuGrade Laser system.To start the display, place the "power/setup" switch to the ON position. Upon start-up, the display will be in guidance mode. When you are in the reference elevation mode a screen that is similar to Illustration 1 will appear.
Illustration 1 g01066373
Guidance screen (Reference Elevation Mode) (1) Laser Receiver Strike Window (2) Guidance Sensor Icon (3) Reference Elevation (4) Device Status Icons (5) Elevation Display Icon
Table 1
Description of the Display    
Callouts     Feature     Function    
1     Laser Receiver Strike Window     This represents the strip of photocells in the left laser receiver. The laser receiver strike window shows the position of the on-grade set point. This strike window indicates that the laser beam is detected on the left laser receiver.    
2     Guidance Sensor Icon     This indicates the guidance sensor that is used by the AccuGrade - Laser System. For the AccuGrade - Laser System, the guidance sensor is always the laser receiver. This icon disappears if the laser receiver is not detected on powerup.    
3     Reference Elevation     This indicates the reference elevation that is set. This is shown in the units set.    
4     Device Status Icons     This shows the status of the devices that are used by the AccuGrade Laser System.    
5     Elevation Display Icon     This represents the current display mode, reference or cut/fill.    Most of the information that is shown on the Display is represented with icons. The following sections discuss the icons that are used on the Display.Elevation Display Icon
The elevation display icon indicates the type of elevation information that is shown on the LCD of the display. There are two elevation display icons.
The reference display icon indicates that the information for the reference elevation is shown.
The cut/fill display icon indicates that the cut/fill to grade is shown.
Illustration 2 g01086065
(5) Elevation Display Icon for Reference Mode
Illustration 3 g01086057
(5) Elevation Display Icon for Cut/Fill ModeThe type of elevation that is shown on the display depends on the operating mode that is configured. Refer to Operation and Maintenance Manual, "Operating Modes" for more information.Device Status Icons
Device status icons indicate the status of every device on the AccuGrade Laser system. The following device status icons may appear on the LCD of the display:Black Icons - Indicate detected devices.Missing Icons - Indicate that the devices are not detected on powerup.Simulated Gray Icons - Indicate devices that were previously detected, but have stopped communication while the display was powered ON.Note: The AccuGrade Laser system will not give grade guidance if any of the required devices are not detected.The following illustrations describe the device status icons for the AccuGrade Laser system.
Illustration 4 g01086075
(6) The laser receiver is connected. The electric mast is connected. (7) The laser receiver is connected. The electric mast is not connected. (8) The device is not connected at powerup or the device is