User's Manual

1673 OPERATION MANUAL REV A
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as it counts down to zero. When it reaches zero, the unit will return to READY or disarmed state.
The firing capacitor is not charged while the unit is armed, but as the unit is in the act of firing. After
firing, the capacitor voltage will be briefly reported as the unit disarms back to the READY state.
2.11. SHOCK TUBE FIRING TIP
2.11.1. Shock Tube Initiation. The shock tube initiator circuit ignites the explosive powder
contained inside of the shock tube creating a dust explosion which transverses through tube at a
high rate of speed toward to the detonator. The Remote Unit develops a high-energy spark at the
igniter needle located in the Igniter Port shown in Figure 2-13 of the firing tip. Care must be taken
to ensure no water or moisture is allowed on or near the igniter needle, or misfires may occur.
Keep the tip clean and dry before use and keep the shock tube ends capped at all times. Once the
shock tube is installed onto the igniter needle, the unit may be operated in the rain.
Figure 2-13 Firing Tip, Shock Tube
2.11.2. Shock Tube Installation on Firing Tip. Figure 2-13 shows the shock tube firing tip and
how the shock tube is installed.
1. Make a fresh cut with a sharp knife removing the last 6 inches of shock tube.
2. Insert the shock tube through the guide hole on the tip as shown in Figure 2-13. The guide
hole secures the tube to the tip and prevents pulling out.