Equipment curing refers to the mixed curing of A and B coatings in the equipment, usually caused by the construction personnel reversing the positions of A and B materials. In addition to early prevention and operating equipment according to specifications, on-site construction personnel must be sensitive to abnormal phenomena during the construction process.
Today, we will summarize to you several signs of equipment curing and how to carry out emergency repairs on site.
Early curing of the device
During the construction process, the following characteristics are found, which can be judged as the equipment has begun to cure:1. The engine suddenly struggles significantly, with a heavy and continuous sound, and the higher the speed, the louder the sound.2. The spray amplitude is unstable and the line type changes.3. The hose heats up significantly.4. The sprayed paint is obviously thickened.
▲ Mixing assembly filled with paint blocks after the equipment is cured
At this point, you will need:
Immediately confirm the position of the A and B component coatings on the equipment.
Immediately reduce engine speed and reduce pressure.
Open the return valve.
Continue to keep the equipment running until the cleaning agent flows out of the return pipe.
If there is no cleaning agent flowing out of the return pipe, close the return valve and quickly separate the 1/4 short pipe from the spray gun. At the same time, increase the pressure until the cleaning agent is sprayed out of the short tube of the 1/4 gun.
If the 1/4 short pipe does not spray out the cleaning agent, quickly separate the 3/8 high-pressure pipe from it. At the same time, increase the pressure until 3/8 of the high-pressure pipe sprays out the cleaning solution.
Quickly disassemble the gun and clean the needle with cleaning agent.
※ On-site personnel should accurately judge early curing and repair quickly.
Mid-stage curing of the equipment
Failure to detect anomalies and stop repairs at the early curing stage can lead to further curing of the equipment. When the spray gun cannot continue to spray paint, it can be judged that the equipment is medium-term curing
▲Disassemble the side pipe after the equipment is cured
At this point, you will need:
Immediately reduce engine speed and reduce pressure.
Open the return valve.
Continue to keep the equipment running until the cleaning agent flows out of the return pipe.
If there is no cleaning agent flowing out of the return pipe, close the return valve and quickly separate the 1/4 short pipe from the spray gun. At the same time, increase the pressure until the cleaning agent is sprayed out of the short tube of the 1/4 gun.
If the 1/4 short pipe does not spray out the cleaning agent, quickly separate the 3/8 high-pressure pipe from it. At the same time, increase the pressure until 3/8 of the high-pressure pipe sprays out the cleaning solution.
If the high-pressure pipe is difficult to drain the paint, quickly remove the plunger pump and filter.
Disassemble the piston pump parts, soak them with cleaning agent and clean the parts.
※ Use the disassembly method to repair gradually, and the speed should be fast, so that the parts can basically be cleaned out and the loss can be reduced.
Late curing of the device
Late curing means that the cured paint has completely filled the pump body and lines, and the equipment cannot complete the fluid circulation.
▲ The pump body is filled with paint blocks in the late curing stage
At this point, you need to:
- Carefully remove the plunger pump lower block and filtration system.
- Soak with cleaning agent and wash the removed components.
- If it is not possible, heat it to soften the paint block before trying. The heating time can be up to several hours, so do not smash the component too hard.
- If you need assistance, please take your device to your nearest Sanwin Equipment Repair Center for repair.
※ Equipment curing will not only cause high economic losses, but also delay the construction period. We recommend that in addition to the cart driver, another assistant should be assigned to observe the operation of the equipment, the marking line shape and the settling of glass beads.
Equipment curing is the most likely engineering accident with serious consequences. Therefore, construction personnel must pay attention to prevent problems before they occur, especially when adding paint, and make sure that materials A and B are not reversed. In addition, poor quality paint may also cause equipment curing. If you find signs of curing during the application process, please stop the machine immediately and do not blindly construct. Early detection, early stop, early disassembly, and early cleaning can minimize losses
We believe that through scientific and systematic training, as well as close and fruitful cooperation between us and our customers, the quality of marking construction will definitely be improved, and the environment of road work will definitely be improved. This is also the goal of Sanwin's perseverance and unremitting efforts.