User's Manual
1678 RFD OPERATION MANUAL 9
2.4.8. Disarm the Remote Unit: Depress the “DISARM” switch. The Controller
will transmit the Disarm command to selected Remote Units. Selected Remote Units
will internally discharge their firing capacitor. Selected Remote Units that receive the
Disarm command will become disarmed within 3 seconds of receiving the command.
The green SAFE light for selected Remote Units will begin to flash on the Controller
display panel. The Controller will then request status of selected Remote Units. If the
Controller is within range of the selected Remote Unit transmitter, the green SAFE
light for that Remote Unit will turn to steady on the Controller display panel. If the
Controller is out of range of the selected Remote Unit transmitter, the green SAFE
light for that Remote Unit will continue to flash on the Controller display panel. The
Fire command must be sent during the Arm Time Period. Once the Arm Time Period
has expired, the Auto Disarm feature will disarm the system automatically.
CAUTION Do not assume the DISARM command has been received by the Remote
Unit unless disarmed status is confirmed with a steady SAFE light for that Remote Unit
on the Controller display panel. If distance appears to be the problem, move closer to
the Remote Unit following standard procedures for this type of situation. The “STATUS”
and/or “DISARM” switches may be pressed repeatedly as the Remote Unit is
approached. Maintain a safe distance from the Remote Unit. Do not approach the
Remote Unit until disarmed status is confirmed with a steady SAFE light for that Remote
Unit on the Controller display panel. Under no conditions should the “FIRE” switch be
pressed as the Remote Unit is approached. DO NOT bring the Controller closer than
100 feet (30 meters) to blasting caps, wires connected to blasting caps, or other
explosives.
2.4.9. Activate the Remote Unit Firing Circuit: Depress the “FIRE” switch for
1/2 second and the Controller will transmit the Fire command to selected Remote
Units. The Controller will only transmit the Fire command to selected Remote Units
whose status is Armed. The selected Remote Units will be placed in Fire Mode and
discharge the firing capacitor across the binding posts. The red ARMED light will turn
off and the green SAFE light for each selected Remote Unit will begin to flash on the
Controller display panel. The Controller will then request status from the selected
Remote Units. If the Controller is within range of the selected Remote Unit transmitter,
the green SAFE light for that Remote Unit will turn to steady on the Controller display
panel. If the Controller is out of range of the selected Remote Unit transmitter, the
green SAFE light for that Remote Unit will continue to flash on the Controller display
panel.
2.4.10. Multistage Firing of Remote Units: Multistage firing provides the ability to
arm all Remote Units at one time, and select any combination of the Remote Units to
fire at different intervals within the Arm Time Period (prior to Auto Disarm). The
procedure for multistage firing is:
• Depress “1” though “4” or “8” switches.