Category Archives: Tips from the Experts

The Importance of Spray Gun Cleaning

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With over 100 years of combined experience in the spray foam industry, SprayWorks is the leading supplier of spray foam equipment. We are dedicated to making sure your business has everything you need to get started when it comes to spray foam, and to grow well into the future.

A major component of a successful spray foam business is ensuring your equipment is in tip-top condition and is ready to tackle any job. This means regular spray gun cleaning as well as maintenance on its assorted parts. By Understanding how to clean a spray gun, you’ll  be able to keep it in great condition for many years to come.

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Remove moisture from your drums

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The “A” component, while in the drum, will react with atoms in the air resulting in the formation of crystal like skin structures. The “A” material should be sealed properly to limit the potential of these formations that if allowed to form will contaminate the liquid. Contamination may make the liquid impossible to process, requiring disposal and wasting of the product. Once the drum is opened, the air needed to replace the displacement of the “A” material being removed should be dry. This is achieved be either low pressure nitrogen being let in the drum as the material is displaced or filtered through a desiccant dryer.

Pre-greasing Gun Parts

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Most new-age spray guns are equipped with a grease fitting to lubricate the gun after service. However, pre-greasing each and every par,t within the wet end of the spray gun during assembly, assures each part is properly greased – without relying solely on the zurk fitting.

Electrical Connections

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Often overlooked when owning and operating spray foam equipment, is the electrical system.  When transporting to and from projects, the spray equipment takes its share of bumps and vibrations that can loosen electrical connections. I recommended rechecking all of the electrical connections at least once every three months. Weak connections can prematurely short circuit or shorten the life of the electrical components.

Best Tool to Have

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As Spray Foam Technicians, we recommend one tool you should have on hand that can keep you and your crew up and running. When you suspect that you may have an electrical issue and need to contact a tech for help, one of the first things you may be asked is to confirm voltage’s through the spray system. Having a Multi-Meter on hand in your spray rig will help you to easily determine the answers you need to get your system up and running asap.

Gun Cleaner for Minimizing Wear on Parts

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Torching, picking, sanding, and wire brushing off the gun and related parts often does more damage than good. At best, it cleans the parts but accelerates service life by abrasive cleaning. Utilizing an effective gun cleaner to reduce excessive cleaning of parts is recommended. Generally, a quality gun cleaner can clean parts within 15-20 minutes when the gun cleaner is heated overnight at room temperatures.

Restoring an Iso Hose

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After several years of service, iso will form a buildup within the hose. We recommend doing a thorough strip and rinse of these hoses to assure full flow performance. Order our SprayWorks Power Flush System to restore those aging iso hoses or when winterizing the system. You’ll be amazed at the amount of old cured materials that will come out.

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Clean your screen filter

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Materials entering the proportioning unit may require screening or filtering. Therefore, manufactures of the spray equipment commonly install y-strainers or filter housings on or near the machine to pre-screen the materials as they are transferred from the storage vessel prior to entering the proportioning unit. Proper cleaning or replacement of the screen filter must be completed daily or as needed to ensure proper material supply is achieved. Clogging and restriction of the screen filter may cause cavitation and/or poorly dispersed product known as off-ratio.
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Test Your Side Seals and O-Rings for Proper Seating

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After replacing the o-rings in your AP-2 Gun, it’s important to make sure they are sealing properly. In order to test if the side seals are seating properly and the o-ring is sealing, follow these steps:

With the safety on and the gun disconnected from the hose, hook an air hose onto the gun and pull on the trigger. This pulls the chamber back slightly which cuts the airflow coming out of the tip. The air should cease from blowing out of the tip and should only slightly exhaust at the vent near the handle and the air-motor. If the side seal, the o-ring around the side seal or the oring at the screen screw is not sealing the air will push out of the check valve seat.
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