D20x22 Series II Navigator HDD Overview 30-9
Hydraulic Lockout Backup Engine Shutdown
To ensure drill remains locked out during a confirmed hydraulic lockout, rotation water pump flow, and thrust
hydraulic pressures and the control circuit for drilling fluid are monitored. If any of the hydraulic pressures
increase, or if drilling fluid system is turned on, engine will be shut down. The engine cannot be started in Drill
mode until Run Button on the remote transmitter is pushed and Run mode is confirmed.
LOSS OF REMOTE TRANSMITTER SIGNAL
A loss of signal indicates that the remote transmitter and machine are not
communicating with each other. Reasons for a loss of signal are:
•The remote transmitter is too far away from the machine (3,300 ft/1,000 m).
•The remote transmitter signal is blocked by an obstruction between the
transmitter and machine.
•The transmitter battery is fully discharged.
•The remote transmitter is turned on when machine is off.
•The system is not operating correctly.
Range of signal can be significantly affected by any obstructions, such as buildings or
equipment, located between the remote transmitter and machine.
When a loss of signal occurs in LOCKOUT mode and the Run Button is pressed, yellow light (1) will flash and
the system will remain in LOCKOUT mode. If in RUN mode, yellow light will flash and the system will continue
to allow drill operation. If Lockout Button is pressed, a “failure to lockout” signal is given.
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