Precautions for use:
(1) Re-ignite after safety inspection
Before using the cutting torch, the ignition performance must be checked. The inspection method is to fix the oxygen hose on the oxygen connector. After turning on the oxygen, first turn on the acetylene adjustment handwheel, then turn on the oxygen adjustment handwheel, and then press your finger on the acetylene connector. If you feel suction, it means that the suction performance is normal. If suction is not performed, even if oxygen flows back from the acetylene joint, it means that the suction performance is abnormal and must be repaired, otherwise it will be strictly prohibited.
If the suction performance is normal, check for leaks. The inspection method is as follows: connect the acetylene hose to the acetylene joint, immerse the welding torch in a clean water tank, or apply soapy water to each joint of the welding torch, gas valve, etc., and then turn on the adjustment handwheel to send oxygen and acetylene. Gas, if the place is narrow, bubbles will be found.
(2) Ignition
After passing the above inspection, the torch can be ignited. There are two methods for ignition: first turn on acetylene and first turn on oxygen. To ensure safety, it is best to turn on the acetylene first, turn on the oxygen immediately after ignition and adjust the flame.
When the high-power cutting torch is ignited, a friction igniter or other special ignition device should be used.

Oxygenation:

1. Connect the large oxygen cylinder (oxygen source) and the small oxygen cylinder to the original oxygen bridge of this product, and tighten the nut;
2. First turn off the low pressure knob of the small oxygen cylinder, and then turn on the high pressure switch of the small oxygen cylinder.
3. Slowly turn on the switch of the large oxygen cylinder. When air is blown in, the wire will make a slight sound. When the sound disappears, it indicates that the pressure of the two bottles is balanced and the oxygen is full.
4. Turn off the switches of the large oxygen cylinder and the small oxygen cylinder, and lower the oxygen bridge;

Note: The pressure of the oxygen source should not be higher than the working pressure of the small oxygen cylinder; after inhaling oxygen, the temperature of the small oxygen cylinder will rise slightly, which is a normal physical phenomenon!

Five, cylinder gas:
Butane gas flushing method: After shaking the butane gas cylinder, vertically insert the butane gas injection port, the pointer shows that the butane gas cylinder can be directly dialed into the butane gas cylinder after flushing;
Note: The cylinder is used for the first time. Because there is air in the bottle, after flushing the gas, put the gas bottle upright, turn on the switch to release the internal air, and then flush the gas!

Precaution:
1. The operator must hold a welder operation certificate issued by the national labor department. Undocumented operation will have adverse consequences and be responsible for it!
2. The oxygen cylinders are inspected every three years, and the gas cylinders are inspected once a year, and the full-time inspection unit at the user's location is responsible for the inspection;
3. Gas cylinders and oxygen cylinders should be kept away from fire sources, avoid high temperature sunshine, and the surrounding temperature should not exceed 50 degrees Celsius; it is strictly forbidden to use hard objects, heavy objects to hit or hit the oxygen cylinders and gas cylinders, avoid heat accumulation, pay attention!
4. The inflation volume of the gas cylinder shall not exceed 1/2 of the volume of the gas cylinder;
5. The oxygen in the oxygen cylinder cannot be used up completely. The residual pressure of 0.5Mpa must be retained!
6. The malfunction of the oxygen meter must be repaired and replaced by professionals, and no one else can disassemble it!
7. Gas cylinders and oxygen cylinders must not be mixed with other gases. Don't pollute the oil!
8. The function and performance of welding torch, dry fire extinguisher and other related main parts must be carefully checked before each use.
9. If you violate the above regulations, you will be responsible for the consequences!

Note: The pressure of the oxygen source should not be higher than the working pressure of the small oxygen cylinder; after inhaling oxygen, the temperature of the small oxygen cylinder will rise slightly, which is a normal physical phenomenon!