Common Airless Sprayer Issues and Solutions

Are you struggling to properly spray your coatings with an Airless sprayer? Sometimes, the coating can get stuck in the sprayer, and you don’t know why. Or perhaps the machine simply won’t turn on. You might also encounter power issues, extension cord problems, or an irregular spray pattern during application.

There are various reasons why these technical issues occur. To help you resolve them quickly, Beissier experts Raphael and Jeremy share their tips and solutions.

Problem 1: The Coating Won’t Pass Through the Airless Sprayer

Using an Airless sprayer for coating applications increases efficiency and saves time. BAGAR special Airless coatings are specifically designed for high-pressure mechanized spraying, ensuring a clean and precise finish on walls and ceilings.

However, a frustrating issue may arise: the coating does not exit the machine. This problem could be due to:

• An outdated seal kit that needs replacement.
• An electrical failure causing the machine to enter an error mode.

But the most common cause is a blocked ball inside the piston. If this happens, follow these steps:

How to Fix It:

• Activate the closed-circuit purge on the machine.
• Dislodge any trapped balls at the nozzle end. If a protective grid is present, use a screwdriver to remove it.
• If the issue persists, a ball may be stuck at the top of the piston. In this case, you’ll need to disassemble the piston to free it.
• If none of these solutions work, contact after-sales support (SAV).

Problem 2: The Machine Won’t Turn On

Another common issue is the Airless sprayer failing to start. This is usually caused by an electrical failure. To check, start by inspecting the power supply on your worksite.
If using an extension cord, ensure that:

• It does not exceed 30 meters in length.
• It has a minimum cross-section of 2.5 mm².
• It is fully unrolled during use.

The issue might also be due to a fault in the machine itself. To verify:

Check the connections and see if there is any response at the control panel.

Inspect the power cable for wear and tear:

Is the cable damaged or cut?

Is there a faulty connection inside the casing?

If all these checks do not resolve the issue, it’s time to contact the manufacturer or after-sales service (SAV).

Problem 3: Power Supply Issues

As mentioned earlier, insufficient power on a worksite can prevent the machine from turning on. But how can you continue working without delaying progress?
Important: NEVER connect an Airless sprayer to a generator!

Even if the generator is regulated, manufacturers strongly advise against it, as it may damage the equipment.

Solution: Use a Thermal Sprayer

If electrical power is unreliable, the only viable alternative is a thermal-powered sprayer:

Some hydraulic machines allow you to replace the electric motor with a thermal engine.

Others come pre-equipped with a thermal motor.

Safety Reminder: Never use thermal sprayers indoors!

Problem 4: Irregular Spray Pattern or Streaking

If your sprayer produces an inconsistent spray pattern or visible streaks (cordage) during application, several factors may be responsible.

Possible Causes & Solutions:

Incorrect nozzle for the product

Check the technical data sheets for the coating you’re using.

These documents specify the correct nozzle type for optimal spraying.

Worn nozzle or seal

A worn-out nozzle or joint can cause an irregular spray pattern.

Expert tip from Beissier’s Jeremy: replace the seal every time you change the nozzle to avoid spray malfunctions.

Clogged nozzle due to impurities

If a particle is blocking the nozzle, follow these steps:

Rotate the nozzle.

• Apply slight pressure to remove the obstruction.
• Reposition the nozzle and check the spray quality.
• Before starting work, ensure the filter is clean and properly installed.

The coating is too thick for spraying

If the product is too dense, it won’t spray properly.

Solution:

• Mix the coating thoroughly.
• Dilute it (maximum 5% water) if necessary.

Using an Airless sprayer can greatly improve efficiency on your worksite, but technical issues may arise. By following these expert recommendations, you can quickly identify and resolve common problems, ensuring a smooth and efficient application process.

Remember: A well-maintained machine saves time and prevents costly delays!