WHY IS MY MACHINE BLOWING FUSES?

When it comes to blowing fuses in your pressure washer machine, there are multiple factors which may be at play. Continue reading for the most common mistakes and how to easily avoid, prevent or fix issues regarding fuses.

ONE – EXTENSIONS:

First thing Aqua Blast Systems tend to ask our customers: Are you using an Extension Lead? As this is usually, from our experience, the main cause for fuses blowing due to Pressure Washers in the UK operating just shy of 13Amps – So with more extension comes more resistance, meaning your fuse is having to work extra hard. Solution: Connect your pressure washer directly into a plug socket for maximum current; or ensure the extension lead cable you’re using is as thick, if not more than the pressure washer cable to enable current to flow easier.

If you decide to use an extension lead, we would highly recommend that you uncoil the entire cable to avoid resistance, over-heating and Voltage drop. It is important that you do so because if your machine does experience a Voltage-drop, naturally, your motor will begin to draw more Amps in an attempt to compensate – Therefore, blowing fuses in your machine or tripping the overload. Another demanding recommendation we insist on is advising that you use a water-proof extension power socket that is RCD fitted.

Overall, if your cable is too short, ALWAYS look to extend your high-pressure hose rather than mains cable.

TWO – NOZZLES:

Recently, has your pressure washer been subject to a high-pressure nozzle replacement? Did you check what size high-pressure nozzle your machine requires? This is another common mistake few of our customers do and the reason it becomes a problem for your fuses is that the wrong size nozzle can potentially restrict the outlet water flow. Imagine your machine requires you to spray water out of a ’10 pence piece’ size hole, and now you have a ‘penny’ size hole. Restricting water flow like this can overload the motor due to a build-up of pressure, as well as possible blowing of fuses. Always check that you are using the correct nozzle size required for your machine to avoid any future controversy.

THREE – LIMESCALE:

Machine has been working perfectly for years and now suddenly feels like no power? Your machine is likely to be ‘scaled-up‘ which is the biggest problem, being water orientated, for pressure washers – as you can imagine. Similarly to nozzle sizes, a build-up of limescale can restrict water flow by forcing the hose circumference narrower, which again, can overload the pump and pop fuses.

However, limescale is not only an issue for your hoses, but it also builds up in the boiler and couplings around the machine – You can check if your machine has been a victim to limescale very easily; simply, remove the hose from machine and look down the end to see for any build-up.

Another way, if your machine has high-pressure chemical abilities, you can check for scale by running pressure washer with no hose attached, meaning that your pressure gauge should measure ‘0’. If no hose is attached and the gauge reads more than ‘0’ this is a typical sign for limescale. Solution: Aqua Blast Systems ALWAYS recommend Karcher branded ‘RM110’ for medium and hard water, as it prevents limescale deposits and ensures constant water flow without loss of performance. You can purchase this in-store.

FOUR – MACHINE:

Lastly, fuses dying could just be a machine-related problem. This can consist of many possibilities – We have condensed the top 3 most common problems we encounter regularly: Bypass Valve not operating correctly or Pressure Settings are set too high for the machine. If this is the case for you, what you’ll find happens is fuses blow when releasing the trigger. Solution: We advise taking your Pressure Washer to (ourselves!) an engineer to have your machine looked at professionally.

Are your fuses blowing by only starting-up your machine? This is most likely too much pressure trapped. Solution: Very easy, simplistic fix to this issue: Before powering pressure washer up, squeeze the trigger and release all pressure within hose as this will relieve the motors start-up of high pressure.

Completing the practice of all the above should minimalize the risk of fuses blowing. Thank you.

 

 

 

 

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