03 Expert Know how
DYNAJET has developed a number of versatile nozzles such as the standard 15° flat-jet nozzle. Requirements of our various applications can vary.
High-pressure jets can be hazardous to life and limb. We therefore strongly recommend that you wear suitable protective equipment. Please be sure you know the regulations that apply in your country and on your construction site.
A high-pressure hose should have a service life of around 6 years if properly looked after. Following a few helpful suggestions will get the most out of your machine’s service life. Here are 10 tips to protect your high-pressure hose.
Which water pressure, distance, blasting agent, temperature and nozzle are used to remove graffiti gently, cleanly and thoroughly? How do I proceed with different substrates - what do I have to consider? Read our tips on this subject.
Only with the optimal jet distance you will also achieve a good result when working with the high pressure cleaner. The jet distance depends on various factors: Type of surface, maximum pressure of the DYNAJET high-pressure cleaner used, type of nozzle and, if used, also the type of abrasive used.
The total length of a gun when working with the pressure washer, including lance and nozzle, must never be less than 75 cm. This is for safety reasons. A shorter gun drastically increases the risk of accident or injury, as the shorter the gun length, the greater the risk of your body or limbs getting into the high-pressure water jet danger zone.
Water sandblasting is particularly suitable for preparing substrates or for fast, simple and efficient paint stripping. The advantage of water sandblasting is that it only needs about half the pressure of water blasting alone for an equivalent, if not better, result.
There are many possible reasons why a pressure cleaner is no longer building up enough pressure. In most cases, a brief check-up will quickly identify and fix the fault.
You can extend the life of your high-pressure cleaning gun by using the trigger less. The more often this is used, the quicker it wears out. A solution is to work quickly with the trigger constantly pulled instead of stop-start working.
Rotor nozzles – also known as grime cutters – combine the benefits of the spot nozzle and the flat spray nozzle. The high-impact spot-jet nozzle removes stubborn dirt, while the rotation covers the wider area of a flat-jet nozzle.
The double-spray lance for professional high-pressure cleaners conveniently cleans and rinses in one. You can seamlessly regulate pressure directly on the tool. Removes stubborn dirt under high pressure and then rinses clean under low pressure, without swirling – all in one efficient operation.
Limescale deposits accumulate in the pipes of your high-pressure cleaner when water with a high magnesium or calcium content flows slowly or rests in hot pipes. Calcification problems occur regionally where “hard” water (for example from mountain springs) is used in th, sh or Dynabox series DYNAJET hot-water machines.
Please follow these instructions carefully when driving and parking your DYNAJET trailer. They cover optimum drawbar load, height of the trailer coupling and correct support.
Water supplied for high-pressure cleaning should generally be drinking-water quality, contain as little air as possible and be cool. Never use water from open waters, from the sea or fully desalinated water, including process water, to supply the machine.
The hose safety strap, also known as the pull-out protection, protects the high-pressure cleaner operator from danger if a hose breaks off at the connection points.
Your device automatically cuts out when there is insufficient water. This is to protect your DYNAJET pressure washer’s pump. We give you some tips here on how to avoid a shortage of water for your pressure washer.
You must protect your DYNAJET high-pressure cleaner from temperatures below 0°C. It must be filled with antifreeze if you are not able to park it indoors. We recommend a monoethylene glycol-based antifreeze as this does not attack the sealing material and protects against limescale deposits.
DYNAJET’s hot water high-pressure cleaners stop snow and ice from hampering your work. Simply use your DYNAJET high-pressure cleaner to deal with snow and ice on any of your stored material. They can also reach inaccessible places – such as between iron reinforcements – and create a clean substrate.
High-quality pressure washer accessories – such as hose connectors – are usually made of stainless steel. The stainless steel hose connection must be greased with the correct lubricant to counteract the cold welding effect.
A constant working temperature of 90-95°C is needed to remove weeds effectively using the high-pressure cleaner. Temperatures above 60°C are sufficient to destroy the protein structure of the weed. However, a higher temperature is needed to tackle the deeper roots.