A hot water pressure cleaner needs a short cool-down process before you switch it off.

In this video, we show you how to cool down your hot water pressure cleaner before shutting it down. This simple step helps protect the heating coil, reduce scale build-up and keep your SPITWATER running at its best.

Why the Cool-Down Procedure Matters

Australia has hard water in many areas, especially in rural regions. Hard water has a high mineral content, including lime, calcium and magnesium.

When a hot water pressure cleaner runs at temperature, those minerals separate from the water. If the machine shuts down while the coil is still hot, the minerals stay inside the coil and stick to the internal surface as the machine cools.

Descaling a kettle or coffee machine is quick. Descaling a pressure cleaner coil is a much bigger job.

The best approach is preventative maintenance.

This simple step helps:

• Protect the heating coil
• Reduce scale build-up
• Lower the risk of corrosion
• Maintain water flow
• Support reliable heating performance

When to Use This Procedure

Use this procedure every time you run your hot water pressure cleaner at temperature.  It is especially important after longer cleaning jobs or when operating in areas with hard water.

How to Cool Down Your Hot Water Pressure Cleaner

1. Turn the thermostat down

Turn the thermostat back to ambient temperature or below.  Depending on the machine and conditions, this may be around 30°C. You can also wind the thermostat back to zero.

2. Keep operating the pressure cleaner

Keep running the machine as normal with the gun open.  This allows cooler water to move through the coil and flush out the minerals that have separated from the hot water.

3. Run until the water cools [30 secs to a minute]

Continue running the machine until the water coming from the lance is cool to the touch or back to ambient temperature. This usually takes 30 seconds to 1 minute.

4. Turn the burner off

Once the water has cooled, turn the burner switch off.  At this point, the coil has cooled safely and the machine is ready for normal shutdown.

5. Shut down the machine as normal

Follow your normal shutdown process for the machine.

6. Release pressure from the line

After shutdown, pull the trigger to release any residual pressure in the hose and gun assembly.  This is a safe practice on any SPITWATER pressure cleaner and helps prepare the machine for the next start-up.

Quick Checklist

• Turn the thermostat down to ambient temperature or zero

• Keep the gun open

• Run the machine until the water feels cool

• Turn the burner switch off

• Shut down the machine as normal

• Pull the trigger to release pressure

What happens if you skip this step?

Switching off a hot water pressure cleaner while the coil is still hot leaves minerals sitting inside the coil.

Over time, this leads to scale build-up. Scale reduces performance, restricts water flow and shortens the life of the coil.

A quick cool-down at the end of each hot water cleaning job protects your investment and keeps your SPITWATER ready for the next job.