50-16 Operation D7x11 Series II Navigator Directional Drill
In Case of Electrical Strike
If a strike occurs, do not allow anyone to approach machine. The machine and ground will be electrically
charged.
If seated on the machine:
• Do not get off machine. Contacting the machine and ground while stepping off may result in injury or death.
• Fully retract drill or extend backreamer to try breaking contact with the electrical power line.
• Have someone who is clear of the work area contact the utility company to shut off electrical power.
• Do not shut off Strike Alert until utility company has confirmed that electrical power has been locked out.
IMPORTANT: Do not continue drilling until utility company has declared the area safe to resume operation.
After Utility Company Has Shut Off the Power
Step 1: Push Strike Alert Alarm Cancel Button to shut off alarm.
Step 2: Push Strike Alert Test Button to test Strike Alert system. The alarm must sound. Release button to
silence alarm.
A successful test is indicated when the green light remains ON steady, and the alarm shuts off, after releasing
the test button.
The Strike Alert System is not functioning correctly if the green light is flashing after releasing the test button.
If the test fails to pass, contact your Vermeer dealer.
IMPORTANT: The Strike Alert may not sense an electrical strike if the cutter shorts out a live voltage phase
directly to the ground wire of the same power line. The only indication that a strike has occurred may be loss of
power in the area.
DANGER: If the power has not been properly shut off, an automatically resetting circuit
breaker could re-energize the power line, causing the equipment and ground to again
become charged if the drilling tool is close to, or in contact with, the power line.
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