Description and function ofthe safety devices
Unloader valve with switch:
The unloader valve limits the operating presur. The desired operating pressure can be infinitely varied with this. If
the max. permissible operating pressure is exceeded or the spray gun closed the unloader valve channels the
water through its bypass line depressurized back to the high-pressure pump.
While the gun is closed the integrated micro-switch will open. About 20 sec. After the mikro-switch opened, the
motor of devices with time delay stop will be cut of.
If thepressure sinks below 10bar , the motor switches on irnmediately again.
*There will be no time delayed stop after the gun closed at devices without time delay stop. The device runs
without pressure in the bypass. /
Attention:
The unloader valve has to be adjusted that overpressure is not more than 10% over working pressure.
Use and description of the equipment
The Weidner Waschbär SE 112/118 is a fully enclosed mobile hot -water high-pressure cleaning device.
The working pressure is generated by a Triplex pump with 3 ceramic plungers. The pump is flange- mounted
directly on thequill motor. There is apressure regulator with mechanical switch, flow controller and presure relief
valve on the high-pressure side of the pump. When the gun ist closed the pressure regulator receives a switching
surge which causes the water conveyed by the high-pressure pump to be retumed to the high-pressure pump' s
suction side depressurized. The motor and pump run without a load. Heating is by means of aflow heaterwith
heating spiral. The oil feed is controlled by thecontrol chain thermostat, flow controller and microswitch in the
mechanical pressure regulator. Ap-type heating oil switch can be incorporated in this control chain as an
accessory.
If workis interruptedfor longerthan 1 minutes the device should be switched offto saveenergy .The device is
suitable to remove dirt from surfaces by means of a freely-expelled water jet. The cleaning device is particularly
suitable forcleaning machines, building facades, stables and floors as well as vehicles such as cars and trucks.
The choice of working pressure depends on the cleaning task. In the case of hard and stubborn dirt the highest
possible pressure should be used for cleaning. The operating pressure depends on the size of the spray nozzle,
whereby the max. operating pressure is limited by the pressure regulator.
Apart from the working pressure and working distance from the object to be cleaned , thejet shape is also
important for the cleaning effect. A round spray nozzle with an angle of O degrees has the highest mechanical
effect an is, e.g. appropriate for cleaning stables or heavily soiled construction machinery and equipment. Normal
work can be carried out with a 25 degree nozzle. In case oflarge-scale cleaning work, e.g. floors, a 40 degree
nozzle can be used.
Important notices
If you discover transportation damage during unpacking pleas contact your Weidner sales office.
Start-up:
Open the stainless steel cover ( 64), check the oil level in the high-pressure pump and top up as required (see
specifications). /
Electrical connections
The voltage shown on the ratings plate must correspond with the voltage from the source of electric power.
The current lead must be fused with 32A on the SE112 ans with 50A on the SE118. A higher fusing is
not allowed.An FI safety switch is to be provided by the customer. .
The electrical connections and mains fusing should ony be installed by a professional.
The device may only be connected to a socket which has been installed in accordance with local laws. Work on
electrical components in the device may only be carried out by a qualied electrican.
Summary of Contents for HWY118 EXT
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