English Operating Instructions HD 10/25 S/SX Plus, 13/18 S/SX Plus17Switching on the unitElectrical connectionCaution!The voltage specified on the model rat-ing plate must correspond to the voltage sup-plied.Caution!The maximum tolerable mainsimpedance at the electrical contact point (seeTechnical Data) must not be exceeded.Caution!Use an extension cable with a sufficientcable cross-section (see Technical Specifica-tions) and unwind it fully from the cable drum.For connected loads see model rating plate/Technical Specifications.Caution!It is essential that the unit is connectedto the power supply by means of a plug. An in-separable connection to the power supply isprohibited. The plug is used to disconnectfrom the mains.Water connection/Suction feedoperationConnection to water mainCaution!Pay attention to the regulations of thewater supply company; according to DIN1988, the unit may not be connected direct tothe public drinking water supply. A short-termconnection via a non-return valve(Order no. 6.412-578) is allowed.For connected loads see Technical Specifica-tions. Connect a supply hose (not supplied) to thewater outlet on the unit and to the water in-let (e.g. water tap). Open water inlet.Suctioning water from an open container Screw suction hose with filter(Order no. 4.440-238) to the water outlet. Vent the unit before using. To evacuate air from the unit, unscrew thenozzle and leave the unit running until wa-ter exits with no air bubbles. Switch off the unit and screw the nozzleback on.Operating the unitDanger!Observe the relative safety regulationswhen using the unit at filling stations or otherhigh-risk areas.Caution!Only clean engines in places whichhave appropriate oil separators (protection ofthe environment).Caution!Only wash animals with the low-pressure fan jet (see "Selecting the type ofspray").Operating with high pressureThe unit is equipped with a pressure switch.The motor only starts up when the lever is re-tracted. Unwind the high-pressure hose fully fromthe cable drum. Set the unit switch to "I". The indicator lightwill go green. Unlock the hand-held spray gun and retractthe lever of the gun. Adjust operating pressure and flow rate(+/–) by rotating the pressure/flow control(infinitely variable). At the lowest flow rate the waste heat fromthe motor will heat the water to approx.15 °C.!