| questions | answers |
|---|---|
| How do I choose the right size surface cleaner for my pressure washer? | A general rule is to have 4 inches of surface cleaner diameter for every 1 GPM your machine produces. For example, a 4 GPM machine is best paired with a 16-inch surface cleaner for optimal spin speed and cleaning power. |
| How do I set up the nozzles on my surface cleaner spray bar? | The nozzles must be sized correctly for your machine's GPM and PSI, with the total orifice size split between the two (or more) nozzles. They should also be angled slightly to create the thrust needed to spin the bar at high speed. |
| My surface cleaner is leaving "tiger stripes." What's causing this? | "Tiger stripes" are usually caused by moving too quickly, having the wrong nozzle size for your GPM, or using incorrect pressure. Slowing your walking speed and ensuring your nozzles are correctly sized will typically solve the issue. |
| How often should I service the swivel on my surface cleaner? | For professional use, inspect and grease the swivel bearings weekly or according to the manufacturer's guidelines. A well-maintained swivel ensures the spray bar spins smoothly and prevents costly damage. |
| Can I use a surface cleaner on vertical surfaces like walls? | While primarily designed for flat surfaces, some smaller, lightweight surface cleaners can be used on vertical walls. However, it can be physically demanding, and overspray control is more difficult than when using a traditional wand. |
| Why is my surface cleaner vibrating or "hopping"? | "Hopping" is often caused by clogged or mismatched nozzles, which unbalances the spray bar. Turn off the machine, clear any debris from the nozzle orifices, and verify both nozzles are the same size and type. |
| Is it better to have a 2-nozzle or 4-nozzle spray bar? | A 2-nozzle bar is standard and works well for most applications. A 4-nozzle bar can provide a more even clean and may allow for faster movement on lightly soiled surfaces, but it requires precise nozzle sizing and a higher GPM machine to be effective. |
| Should I pre-treat or post-treat the concrete when using a surface cleaner? | Yes, applying a chemical pre-treatment helps break down dirt and organic stains, reducing cleaning time and improving results. A post-treatment rinse with a mild bleach solution can brighten the concrete and kill any remaining algae spores. |
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