Figure 25. Priming a charge using a blasting cap without a priming adapter.
Test Series Circuit. Test the series circuit using the steps that follow.
Connect the free ends of the firing wire to the binding posts when using the M51 blasting cap
test set. The indicator lamp should flash. If the lamp does not flash, the circuit is defective.
Touch the free ends of the firing wire to the galvanometer posts. This should cause a wide
deflection of the needle. The extent of the deflection depends on the number of caps and the
length of the firing wire.
Test Operate the Blasting Machine. Test operate the blasting machine (Figure 26) using
the steps that follow.
Free the D ring that holds the plunger handle against the machine's body. The plunger is
spring-loaded, so the handle is in the ready-to-fire position when freed from the D ring.
Stroke the handle three or four times. The neon indicator lamp located within the plastic
housing between the two terminals should glow briefly.
Figure 26. M32/34 blasting machine.