====== High-pressure washer ======

The robot must be connected to an external high-pressure washer in order to wash.

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===== What kind of high-pressure washer fits the EVO Cleaner best? =====

The robot is delivered with, and shall be used with, a [[:parts:nozzle_types|turbo-nozzle]], working with a flow of 17-19 liters/minute at a pressure of 180 to 220 bars.

^Pressure - Bar [PSI]^Flow with rotary nozzle L/min [GPM]|
|180 [2600]|17.0 [4.5]|
|200 [2900]|17.9 [4.7]|
|220 [3200]|18.8 [5.0]|

This flow is less then most operators use when they are washing today but the whole idea about using a robot is that time is not so important anymore. Best result with the robot is achieved when it’s allowed to clean the same space several times.

  * The robot can wash up to 30 hours non-stop.*
  * Soaking and washing is normally done with the robot.
  * Water consumption is less than 1 m3/hour.

//*Depending on how demanding and efficient the programs are. //

==== What kind of high-pressure washer? ====

A high-pressure washer with too big pump will by-pass the extra water or in worst case constantly start and stop. The incoming water is never completely clean and this by-pass causes a big wear on pump and valves. Too small pump and you will not get the pressure required.

Required specifications for the high-pressure washer:

  * Water pressure: 180 – 220 bar

  * Flow about 17-19 litres/min (1000 L/hour), higher flow is only a cost

  * High quality, it’s going to work long hours

  * Automatic start/stop function

  * Controlled with pressure switch. (There are also pumps controlled by a flow-switch. That, however, sometimes gives problems starting the pump since it’s depending on the water flow on the farm which mostly goes up and down)

=== Examples to buy: ===

  * KÄRCHER HD 10/25-4 S
  * KRÄNZLE QUADRO 1000 TS
  * RENO 195/18 with pressure switch
  * RENO 220/18 with pressure switch

Remember to use a **[[:parts:water_filter|water filter]]** with the incoming water to the high-pressure washer (filter placed before the high-pressure washer). Water isn't always clean and the particles make wear on the high-pressure washer, the nozzle and robot sealings.

**We recommend that you buy your high-pressure washer from the local dealer who can give you the best service.**