How to use wedding cold fireworks;
Step 1:
(Prepare relevant materials for cold fireworks display)
Several smokeless and odorless cold fireworks, several meters of two-ply yarn (64 cores) (available in hardware store), and several batteries 1.
Although cold fireworks are safe, I hope everyone should pay attention to safety, stay away from flammable and explosive materials, and pay attention to the operation process when setting off.
Step two:
Because the couple can't care about these things on their wedding day. So be sure to find someone with a particularly strong sense of responsibility, explain clearly and take full responsibility for this matter.
(1) When a single cold fireworks is set off, directly separate the positive and negative electrodes of the cold fireworks ignition head, and connect the battery to ignite it. After lighting, you can remove the battery (fireworks will not go out because of removing the battery).
(2) When setting off multiple fireworks, connect multiple cold fireworks in parallel on the double-stranded conductor, with no more than 20-25 fireworks at most, and arrange people at the end of the conductor. Fix the 1 battery together, and the person in charge of discharging will connect the positive and negative electrodes of the wire to the battery when it is necessary to discharge, and the whole cold fireworks will be finished. It is very simple, as long as you pay attention to the timing and accuracy (it is strongly recommended to use a special igniter for cold fireworks).
Note: The cold fireworks should be fixed on the floor to prevent the pipe from falling off with the nozzle facing upwards. You can also buy the base of the cold fireworks or stick it on the ground with adhesive tape to prevent it from falling off. Don't point the nozzle at people.
Matters needing attention when setting off cold fireworks:
1. Hold the cold fireworks a few times to see if there is any abnormal sound scattered in the receiver. If yes, please do not use it. When setting off cold fireworks, stay away from inflammable and explosive materials and stand upright in the direction of arrow (except waterfalls). Not for people and animals, fix the product (or use a special base for cold fireworks) to prevent the lamp from falling; After connecting the special wire, it will detonate at a distance of 4 meters, and the audience will watch it at a distance of 6 meters. In case of flameout, keep away from it for three minutes, and then push the product to the unmanned side with a wooden stick;
2. Voltage description for setting off cold fireworks: When the number of cold fireworks products is less than three, the battery of 1.5V can be used to get electricity; When the number of products is more than three, you can use batteries to get electricity, or you can use batteries to get electricity from civil power supply (use 65438+220V transformer to get electricity from civil power supply). It is recommended to buy a special igniter for cold fireworks;
3. Before setting off the cold fireworks, don't connect the power poles at the same time, and then connect them at the same time when setting off the fireworks. When installing the switch, make sure that the switch is closed to avoid accidental combustion. Turn off the switch in time after igniting the cold fireworks products;
4. When a large number of cold fireworks are set off, it is necessary to prepare a long enough power cord (64-core flower cord is recommended), determine the connection point with the flower bud according to the placement distance, peel off the rubber of the power cord at this point to expose the copper wire (2cm is enough), screw the two power cords of each flower bud together with the two copper wires stripped by the electric igniter, wrap them with adhesive tape to avoid short circuit, and then use a battery or civil electricity (see special igniter for cold fireworks).
5. Turn off the smoke alarm when it is set off in a place where there is a smoke alarm. When setting off in a place with carpets or wooden floors, add a piece of 40cm*40cm flame retardant material at the bottom of the fireworks, or wet the carpet with water around the fireworks within a range of about 1 m to prevent washing the bottom or burning the carpet. It is recommended to use a safe fixed base.
6. Do not use flammable and explosive compressed air pressure spray (such as colored aerosol) in the place when discharging, so as to avoid chemical reaction and explosion;
7. If the product is damaged or falls off from the soil, please do not use it. If such products are abnormal during discharge, please soak the unqualified products in water for half a day and then bury them deeply.