How to clean the foam gun after work: Overview + Video

How to clean the foam gun after work: Overview + Video How to clean the foam gun after work. In the repair and construction business, the assembly gun has become something so familiar that it is already difficult to do without this tool. Without it, it is not so easy to carry out various important processes - to install plastic windows, to install interior and exterior doors, to mount slopes, to seal engineering systems in the house, to insulate the facade and much more.

But this device is often clogged due to the use of polyurethane foam, and for this reason, when buying, you should immediately figure out how to clean the gun from dried polyurethane foam.

Features of cleaning the gun

With the help of a sealing compound and a construction gun for supplying it, various cracks and voids can be closed, and this helps to do all kinds of manipulations.

But still, despite the simplicity of design, such a device requires special care and attention.

Can there be several types of device at once, which will help determine how to clean?

  1. A gun made of metal. This type is the most durable and reliable. Its operational life is about 5 years on average. It is also easy to apply and clean.

  2. Teflon. This type of apparatus has metal surfaces, but these are coated with Teflon for protection. This makes the gun easy to clean. The method for removing the sealant is similar to that of a conventional metal gun.
  3. Plastic.

    This device is positioned as a disposable one, so you shouldn't even clean it.

Please note, that usually the assembly gun is used more than a dozen times, and so that in the future work with this tool does not cause you any trouble, you should ensure its timely cleansing.

Let's take a look at a few options to help remove sealant from the gun:

  1. How to clean the foam gun after work: Overview + Video Cleansing without removing the balloon. This is the easiest method to clean the foam dispenser. Suitable if you often use tools and it is meant to replace containers with polyurethane foam, even when they are completely empty.

  2. Using chemical reagents. Flushing the gun is performed using chemical compounds, and it is performed after all installation work has been completed and the cylinder is removed. This method is considered ideal for short-term use.
  3. Mechanical cleaning method. In this case, disassembly of the device is provided, as well as thorough cleaning of all parts.

    For such an operation, substances such as a special wash, a penknife, or a cotton cloth can be used.

Once the cleaning methods have been identified, let's take a closer look at what tools can be used to clean up.

How to carry out the procedure

How to perform cleaning

The degree of contamination of the construction gun will determine what the cleaning method you use. The simplest and, moreover, available to everyone will be the option that is used when it is possible to eliminate contamination immediately after using the unit. In this case, it is envisaged to remove visible particles of the pistol, and also to displace the residual mass of sealant from the barrel outward.

M Mechanical cleaning involves a complete disassembly of the tool:

  1. It is required to unscrew and get everything that is possible. The instructions that come with the device must contain detailed instructions on how to clean the gun from the stuck polyurethane foam. When working, you should carefully take out and untwist everything so as not to rip or damage the thread.
  2. When disassembling the gun, all the parts should be cleaned of foam, and then wipe them dry with a soft cloth, and also blow through the barrel. For such purposes, it is better to use a cleaning rod, and you can do it yourself from any available means, for example, from wire.

  3. Pour into the barrel a special liquid, "flushing", and then clean the tube from the remains of the foam mass using an improvised rod. Repeat all the manipulations until the cleaning rod moves easily in all directions, and its tip appears on the other side. If the foam has dried in the barrel, then you will not be able to remove it with the help of only one chemical substance.
  4. The barrel should be cleaned very carefully so that future foam residues do not interfere with the passage of the new polyurethane foam sealant.
  5. When cleaning the tool, grease the connection points and reassemble.

  6. After all manipulations, the tool is ready for use.

Please note, that such actions should be performed only if you have an idea of ​​how the device was arranged. If you do not have such information, we recommend that you seek help and advice from specialists.

Disassembling the gun is a last resort, and it is best to try not to drive all equipment to such a procedure. Even after thoroughly cleaning the gun, new sealant may not come out well through the nozzle, and the gun is then useless.

How to clean the foam gun after work: Overview + Video There is another cleaning method, and it is used if the barrel of the pistol is completely clogged, and in addition to this, it is not pressed adjusting lever (i.e. trigger). In this case, carefully clean the nozzle from foam and sealant in general, and then lubricate everything with a solvent. In this case, the trunk must be lowered.

After a few minutes, the lever should start moving. If you succeed, then you can continue cleaning further.

If it turns out that the adjustment mechanism does not lend itself to movement, then use the third method. There is a small ball in the area where the container with the enclosed foam connects to the gun. It is he who should be treated with a solvent.

Such actions can really help with cleansing if the foam is heavily clogged into the bottle with the cleaner, and then clean the barrel with all the contents.

So, if we proceed from everything listed above, then you can conclude that to start work with a gun for mounting and sealing with foam, you should always have "gun first aid" with you, namely a bottle with cleaner. Prudence will help you clean expensive equipment from the remaining foam that has not hardened in time, as well as extend the operating life of the device. If the sealant has hardened, be aware that using brute force can ruin the gun, especially if you have the Teflon variety. The device in such a case will simply become unusable for subsequent use.

If, after the completion of the work, the tool is still dirty, and there is also a possibility that the foam will have time to solidify, then before performing the procedures for cleaning the foam gun from the foam, you must not pull the trigger under any circumstances , as this could break the mechanism.

Clear the gun from polyurethane foam, which has had time to harden, as soon as possible, and following certain rules:

  1. Immediately clean the barrel of sealant that adheres to it. A knife can be used for these purposes, but keep in mind that cleaning should be done very carefully so that the valve is not damaged.
  2. Gun nozzle / valve must be pointing straight down. The trigger should be filled with a substance such as Dimexide.

    Next, after a minute, try to lightly press the adjusting lever, and if it starts to vibrate, and the sealant flows from the nozzle, then the gun can be used further. If nothing like this happened, then you will need to proceed to the next step to remove the sealant that has accumulated in the hole.

  3. There is a small ball near where the balloon is connected. It is necessary to apply a little product (Dimexidum) to it, and then attach the bottle containing the cleaner. After a couple of minutes, try to pull the trigger.

Please note, that if for some reason none of the methods described above helps, you should completely disassemble the tool, and then drip a solvent (or the same Dimexide) into the socket and into each internal part of the device. Further, after 1/3 hour, all remnants of the mass that have hardened will easily give in, and you can wipe everything off with a rag. After assembling the gun, flush it with reagent.

This removal method should only be used when more than 8 hours have passed since the end of the work. During this time, the foam is able to dry up to 100%, and therefore the instrument should be cleaned mechanically after eight hours.

After such cleaning, the device will be able to produce much less pressure than before. For this reason, you should take care of the device and its cleanliness in advance, remove all foreign masses as quickly as possible, until they have time to dry out.

But there is another method, which makes it possible to avoid mechanical cleaning and complete disassembly of the device, due to which the nozzle of the gun will always be in working order. To do this, you need a tube, preferably a plastic one (you can remove it from the tool for a single use), good wire, and the gun itself.

Using a wire, hook the plastic tube and attach it to the nozzle of the device, and after working with the gun, simply remove it.

For further use of the gun, a new plastic tube must be taken, so that the tool is always ready and clean for new work.

How to flush the gun

The mechanical method is a sufficiently effective way to clean the gun from polyurethane foam. But if the foam has time to harden in the barrel cavity, then it will be difficult to remove it completely, directly all the particles. As a result, with each further use, the foam pressure will become less and less, since the new sealant will constantly cling to the remaining fractions of the substance. To solve the problem, you should promptly remove the remaining foam, and if you start the situation, then flush the equipment.

You will be able to perform high-quality cleaning of the gun from cured polyurethane foam by rinsing, if you can observe two basic rules - speed and prudence. Such moments imply that you should buy special cleaning products and quick use. Experts advise buying cleaning products from the same company as the manufacturer of the polyurethane foam, and working only in the tandem of the same name.

Important! When sealant application is complete, proceed with cleaning the instrument immediately and without delay. Remove the used balloon, and if there is still foam in it, then do not throw it away - the substance in the container will retain its positive properties for a long time.

Flushing of the assembly gun is carried out according to simple rules:

  • Remove the cylinder in which the sealant, and instead of it, fix the bottle, in which will be an aerosol for cleaning.
  • Pull the trigger. In this case, liquid should begin to drip from the spout of the apparatus.Keep it depressed until the spray is clear - this is the main sign that the flushing agent has succeeded in dissolving the hardened sealant.
  • The cylinder should be removed and pulled back on the trigger.

    If for some reason it moves in jerks, it means that it was not possible to wash all the dirt and you need to repeat the procedure again.

Please note, h then, according to safety rules, during washing, the barrel from the instrument must be directed away from the person so that the cleaning composition does not get on his skin and mucous membranes.

The fact is that the solvent can leave a burn on the body, and therefore, when working with it, you should be extremely careful, as well as attentive. Please note that you cannot smoke near the cylinder, and also store it in the sun, near a fire, or open the container. If the substance gets into your nose, mouth or eyes, you should definitely and immediately seek medical attention.

If you wish, you can replace the aerosol remover, and if you do not have any product at home, you can use acetone instead. Pour it into the nozzle of the device, and then use an iron wire to clean the gun. It should be washed slowly so that all parts remain intact and intact.

Rules for caring for the device

So, the main thing that is really worth remembering when buying a foam assembly gun is that this type of equipment should be cleaned after each use, and also try not to waste time. Foam hardening is the main cause of failure of such devices.

Blockage can form in the following places:

  • How to clean the foam gun after work: Overview + Video B shut-off ball.
  • In the bottle spout.
  • In the supply valve.

Such breakdowns can be attributed to mechanical, and in order to eliminate them immediately, you should simply clean the tool, do not throw it away immediately. But if, due to something, sticking occurred directly in the barrel of the pistol, then cleaning will not help, and repair work will not work either.

A simple way to prevent this kind of trouble is to follow the rules for use and proper care. Repair work on the pistol is usually not carried out; the most commonly used procedure is mechanical cleaning and lubrication.

Recommendations and advice from specialists

Masters with vast experience know like no one else how important it is to keep the instrument clean. For this reason, experienced craftsmen give recommendations to beginners who have just started using this type of auxiliary equipment for repair and construction work.

It is important to ensure that any dirt is removed immediately after work is completed.

Due to timely cleaning, the sealant gun will last much longer than it can.The cleaning method will depend on how difficult the contamination is, as well as the time the sealant has spent in the apparatus. If the foam has not had time to dry, then it will not be difficult to wipe it off.

Good advice! Substances of the chemical type for cleaning, experts advise to buy together with polyurethane foam. Ideally, both substances should be from the same manufacturer.

If you plan to replace the sealant bottle with a can from another manufacturer, in which the sealant has different characteristics, then it is imperative to remove the gun and rinse it well. Foam for sealing differs from different companies in its chemical composition, and if the substances begin to interact with each other inside the device, then material may appear that simply cannot be removed. For this reason, it is best to always take cleaning and sealant from the same brand. Specialty chemicals will work much more efficiently than universal fluids. Each firm will produce polyurethane foam with different characteristics.

A cleaner from a similar series will adapt to the characteristics of the polyurethane foam, and therefore the cleaning result will always be perfect.

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