Note: this knowledge is only suitable for 5 gallon press disc polyurethane pur hot melt adhesive machine, 55 gallon barrel pur polyurethane hot melt adhesive machine, 5 gallon polyurethane hot-melt machine, and 55 gallon pur hot-melt machine. (this information is provided exclusively by Dongguan SEP machinery, not reproduced, illegal reprint must be investigated for legal liability).



One, PUR polyurethane hot melt adhesive machine features:

Because of the particularity of PUR polyurethane hot melt adhesive machine, PUR polyurethane hot melt adhesive is also called wet curing reactive polyurethane hot melt adhesive, also known as wet hardening reactive polyurethane hot melt adhesive, called pur hot melt adhesive. It is cured when hot melt is used, such as water vapor contact in air, so it is melted and made in pur hot melt machine. The process needs to be completely isolated from the air. The pur hot melt adhesive machine is specially designed for gluing polyurethane hot melt adhesive. You may need to know the pur polyurethane hot melt machine. After understanding the characteristics of PUR polyurethane hot melt adhesive, it is easier to understand the following maintenance.

Two, PUR polyurethane hot melt adhesive machine working principle:

Polyurethane hot melt adhesive machine and ordinary hot melt machine biggest it is the hot melt coating process completely isolated from the air, the ordinary hot melt machine is from bottom to top melt hot melt, PUR hot melt adhesive machine is down by the melting of PUR polyurethane hot melt adhesive, so one of the key components of PUR hot melt machine is hot melt pressure plate body.

Three, PUR hot melt glue machine when changing the attention:

1, when cleaning the pur polyurethane hot sol machine, the hot melt adhesive heating disc must be separated from the pur hot-melt adhesive tub first, and the pur polyurethane hot melt glue barrel is separated from the pur hot dissolving machine, and the power supply should be cut off in the case of keeping the pressure in the lift cylinder.
2. When the polyurethane hot melt adhesive machine is removed from the bucket, the pressure should be pressurized slowly from small to large. In any case, direct use of high pressure gas is not allowed to remove the bucket directly to avoid accidents.
3. When the heat disks of the pur polyurethane hot melt machine and the polyurethane hot melt bucket are separated from the pur hot melt adhesive, it is necessary to close the channel between the pressure plate and the pump body to prevent the curing before cleaning the pur hot soluble glue.
4. When cleaning up the heating plate of PUR hot melt adhesive machine, the staff must wear special high temperature protective clothing, with high temperature gloves, no skin contact hot melt adhesive buckets, molten pur hot melt adhesive and heating plate and other high temperature parts to avoid scald.
5, PUR hot melt adhesive machine is the best way to remove the dry nitrogen from the 5 gallon hot-melt glue barrel, and avoid the direct use of undried compressed air. If the compressed air is needed to be filled, the compressed air must be thoroughly dried. And often check the use of desiccant.
6, after the pur polyurethane hot melt machine is separated from the hot melt adhesive barrel, it is necessary to clean up the residual pur hot melt adhesive on the hot melt adhesive press disc immediately and thoroughly. When cleaning the hot melt adhesive plate of the pur hot-melt adhesive machine, no hard tools are used to prevent the scratching and pressing of the Teflon coating.
7. For the special structure of the pur hot melt adhesive press disc cleaning, because the special structure pur hot melt adhesive machine heating plate can not completely clean the residual pur polyurethane hot melt adhesive in a short time, then the residual pur polyurethane hot sol must be cleaned by dry nitrogen protection, and the residual glue time must not be more than 10 minutes, not to be used. He hard tool to clean pur hot dissolving machine heating plate.
8. After the pur hot melt glue machine is cleaned, the pressure plate should be pressed into the new pur hot melt glue barrel immediately, so that the pressure plate can not be

Four. Safety precautions for daily operation of polyurethane hot melt adhesive machine: you may need to know 5 gallons moisture reactive polyurethane hot melt adhesive machine.
1, avoid the use of polyurethane pur hot-melt machine around the volatile and explosive materials or gases, and no inflammable and explosive materials can be stored around the spraying equipment of PUR hot-melt glue machine.
2. Do not operate hot melt adhesive machine without proper protective devices and good insulators or good protective panels.
3, when the pur hot-melt adhesive machine needs to be repaired, it must be trained by professional trainers.
4, when the ambient temperature is below -20 C or the ambient temperature is above 80 C, PUR polyurethane hot melt adhesive can not be used.
5, the use of PUR polyurethane hot melt machine occasions should ensure no fast flowing air. When the pur glue barrel and the melt adhesive pressure plate used by the pur hot-melt machine are exposed to the fast circulation air, the rapid cooling will affect the heat flux of the pur hot-melt adhesive and waste energy.
6, when pur hot-melt adhesive is supplemented, the deformation of PUR hot-melt adhesive buckets should be checked. The pur polyurethane hot melt adhesive buckets should be discarded to avoid damaging the press disc of the pur hot-melt adhesive machine.
7. Whenever the pur polyurethane hot melt glue machine throat and spray glue gun are disassembled, the silicone oil must be used immediately to seal the exposed pur hot melt adhesive to avoid the wet reaction and curing.
7. When pur polyurethane hot melt machine is not used for a long time, silicone oil seal should be used to ensure the performance of PUR hot melt adhesive in the barrel of PUR polyurethane hot melt adhesive.
Five. Safety precautions during installation of PUR hot melt adhesive machine.
1, when installing the pressure plate pur hot-melt adhesive machine, it is necessary to connect an effective grounding wire correctly. Any equipment that uses high voltage power needs grounding wire. When the grounding wire is not used, any pur polyurethane hot-melt machine with insulators protection elements can still form a voltage conductor, which is dangerous to electric shock.
2. According to the load required by the pur polyurethane hot melt adhesive machine and its attached peripherals, check whether the power cord is in conformity with the insulation protection. The load of the wire must be above thirty percent of the rated power of the hot melt adhesive machine.
3. To ensure that the use voltage of the pur polyurethane hot-melt adhesive machine is in accordance with the requirements of the hot melt adhesive machine. In general, the 5 gallon pur polyurethane hot melt adhesive machine is used for the single-phase 220V AC voltage standard, and the 55 gallon wet reactive polyurethane hot melt machine uses the 380V AC power supply. When the voltage is too high or too low, it will not be used. To achieve the design performance of the equipment, it may also damage the hot-melt adhesive machine, and ensure that the power supply line is connected to the correct voltage and power supply properly when wiring.
4, ensure that the pur hot-melt glue machine operates under the specified voltage. If the voltage used is different from the specified standard power supply, it may cause the hot melt glue machine to be burned down.
5. The pur hot melt adhesive machine needs to be operated by professional electricians when the power is connected to the power supply. The power supply with polarity can not be reversed, and the wiring point needs to be fixed with special terminals.
Six. Matters needing attention in the use of moisture reactive polyurethane pur hot-melt adhesive machine:
1. When installing and using pur hot melt adhesive machine, no other debris can be placed on the machine body or used as a padded appliance.
2, we should ensure the cleaning of the pur hot-melt adhesive machine, and there should be no solid, impurities, iron chips, screws, wire head, hard sharp objects and other solid objects on the press disc of PUR glue machine.
3, when the polyurethane hot melt machine is moved or raised, only the base is allowed to be used as the moving point, and the hot melt machine can not be lifted by using the stroke cylinder, the electrical box door, the electrical components on the control panel or the insulation pipe of the control panel for the pur hot melt glue machine, and the abnormal handling will damage the spraying equipment of the pur hot-melt adhesive machine.
4, when moving or transporting pur hot-melt adhesive machine, the power supply must be cut off first, so that the cooling plate of the pur hot-melt machine and the glue cooling in the plastic barrel can be moved.
5, PUR hot melt glue machine must always maintain the vertical of the pur hot-melt adhesive during transportation and transportation. If the tilting or transportation will damage the positioning accuracy of the pur hot-melt adhesive machine, it may also destroy the pur hot-melt adhesive machine.

Seven. General safety precautions for PUR moisture reactive polyurethane hot melt adhesive machine during maintenance.
Maintenance and maintenance of PUR moisture reactive polyurethane hot melt adhesive machine should take the following major safety precautions as follows:
1. Before working on the maintenance and maintenance of the pur humid reactive polyurethane hot melt adhesive machine, it is necessary to cut off the power supply of the pur humid reactive polyurethane hot melt adhesive and the total power connected to the outside, and not be charged.
2. In the process of disassembly and maintenance, the maintenance personnel should not wear earrings, watches, necklaces, bracelets and other conductive ornaments, so as to prevent accidents.
3, do not disassemble and check any part of the pur moisture reactive polyurethane hot melt adhesive machine unless you have enough knowledge about the performance of the equipment.
4. Unless there are other personnel assisting in the side, and in the event of accident, mechanical damage or the injury of the personnel, it can be immediately given to help or first aid, or do not separate and repair the pur humid reactive polyurethane hot melt machine equipment.
5, only qualified personnel can carry out maintenance work for PUR moisture reactive polyurethane hot melt adhesive machine.
6, in any case, do not touch the wire connector that may be exposed to the outside world or other components that are not connected to the wires.
6, before dismantling or moving the protective device or replacing the components of the pur hot melt polyurethane hot melt adhesive machine, the power supply must be cut off.
7, if possible, try to stand on plastic blankets for maintenance. Do not maintain the pur hot melt polyurethane hot melt adhesive machine in a flooded floor or very wet environment.
8. Safety gloves, goggles and long sleeved clothes must be worn to maintain and repair the pur humid reactive polyurethane hot melt adhesive machine. The body is burned by high temperature liquid heat soluble glue or burned by the surface of high temperature components.
9. When loosening or installing pressure joints, it must be determined that the pressure of the pur moisture reaction polyurethane hot melt adhesive machine to provide pressure gas source has been reduced to zero.
10, when cleaning hot melt adhesive cylinder, avoid using firework or sharp rigid tools to avoid scratching the Teflon non adhesive coating on the heating plate of PUR hot melt adhesive machine.
11, if the air pressure or PUR humid reactive polyurethane hot-melt machine leaks glue, do not continue to use pur wet air reactive polyurethane hot melt machine. First stop the pur wet air reactive polyurethane hot melt machine work, cut off the power supply, and reduce the operating pressure to zero for repair.

Eight. General safety precautions for hot melt adhesives and solvents:
1. pur polyurethane hot melt adhesive
When using high temperature pur polyurethane hot melt adhesive, the following matters should be paid much attention to:
A, hot melt adhesive can be condensed into solid at the high temperature of the liquid, even if it is condensed into solid state for a period of time, it still has high temperature. Once touched to the human skin, it can cause serious injury.
B, when working with a pur humid reactive polyurethane hot-melt machine or PUR hot melt adhesive buckets, be sure to pay attention to whether you are wearing a safe working suit, or if you are wearing gloves and goggles.
2. solvent for heating and cleaning
A, when using the heating solvent to clean the adhesive elements, do not use the equipment with fireworks or no temperature control to heat and clean, the general pur wet air reactive polyurethane hot melt machine can not operate 280 degrees during cleaning and maintenance.
B, can not be used to remove paint with the solvent to clean the adhesive elements, because of the high volatility of the solvent, easy to burn, explosion, and at high temperature will produce toxic gas, and easy to destroy the pur hot melt glue machine heating plate on the Teflon coating.
C, before the use of cleaning solvent, it is necessary to check the indoor air circulation is good, to avoid the use of clear fire, the air can not be used in the environment without the circulation of PUR hot melt glue machine.
D, try to avoid the long time use of cleaning flux to clean the pur wet gas reactive hot melt adhesive machine, so as to avoid inhaling too many possible harmful gases produced by the high temperature.

Nine, the use of PUR hot-melt glue machine special attention:
If the pur hot-melt adhesive is used in the process of hot melt hot melt adhesive hot liquid pur hot melt glue, please do not try to wipe off the pur hot melt adhesive from the skin, and immediately soak or rinse the injured place in clean and icy water until the pur hot melt adhesive on the skin is completely cooled. Don't try to peel off the surface of the skin with hot melt glue. Cover the scald with a clean, wet gauze. If the injury is serious, or the area of hot melt glue is wide, it may cause the trend of injury or injury, then the body temperature of the injured person must be kept in normal condition, and then the injured person will be sent to the hospital immediately. Therefore, the use of PUR polyurethane hot melt adhesive machine should always pay attention to safety.