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3.3.4 Overriding an Alarm
In the event the D-TEC has generated a persistent alarm, the operator has the ability to override
the unit and continue raising the mast.
Note: The D-TEC will not allow an operator to override an alarm in an area where the electric
fields exceed the OSHA limit (16.2 kV/m). In this case, the audible warning "OSHA Limit" will be
played.
If the alarm appears to be incorrect, the alarm can be overridden as follows:
1. Momentarily push the Override/Clear switch to clear the alarm.
2. Attempt to raise the mast normally.
If the mast works normally, it is not necessary to override the alarm.
If the mast does not work normally, the operator may when override the alarm by
simultaneously (within 2 seconds) engaging the Override/Clear Switch and Keylock
Switch. If the installation is correct, this will require two people. If the switches are not
engaged within the same relative time frame, an override will not occur.
Once the override process has been initiated, the following audible warning will be
played in English and Spanish:
"Warning. Aviso, peligro. Danger. Danger. You are about to override a safety device.
Look up; you can be fatally injured. Make sure the area overhead is clear of all
obstructions before you continue."
This warning must play completely through one time before the mast is re-enabled. At
that point, the override warning will continue to play and the Up/Down Switch can be
utilized to raise the mast as long as the Override/Clear and Keylock Switches remain
engaged. Once a particular alarm has been overridden, it will not again disable the mast
until after a switch has been released, however another alarm can disable the mast. For
example, if an electric field is overridden, an electric field will not disable the mast, but a
magnetic field may still disable it. Each override of an alarm is time-stamped and
recorded in the D-TEC's non-volatile memory for future reference (factory use only).
TP-5522901-00
July 2018
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D-TEC
O
M
PERATOR
S
ANUAL
3-5
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