User manual MAKITA HW131

[. . . ] The safety valve is also a pressure limiting valve. When the gun trigger is released, the valve opens and the water recirculates through the pump inlet. All installation and assembly operations must be performed with the appliance disconnected from the mains power supply. For experienced people informed about the relative technical, regulatory and legislative aspects and capable of performing the operations necessary for the use and maintenance of the appliance. [. . . ] Adjusting the spray nozzle (for models with this feature) Adjusting the detergent (on models with this feature) Adjusting the detergent pressure 5. 2) Depress the gun trigger and discharge the residual air inside the hoses. Discharge the residual pressure from the gun until all the water has come out of the nozzle. When using detergent, the adjustable nozzle must be set on " " (on models with this feature). Fill the tank with highly degradable detergent. Dissolve dirt by applying the detergent mixed with water to the surface while still dry. When dealing with vertical surfaces work from the bottom upwards. Leave the detergent to act for 1-2 minutes but do not allow the surface to dry. Starting from the bottom, use the high pressure jet at a minimum distance of 30 cm. Do not allow the rinse water to run onto unwashed surfaces. Set the adjustable nozzle on " " to deliver detergent at the correct pressure (on models with this feature). The regulator (G) is used to adjust the working pressure. The pressure is shown on the pressure gauge (where fitted). Adjusting the pressure (on models with this feature) Set the starter switch on (ON/1) to: a) start the motor (in models without TSS device); b) set the motor ready to start (in models with TSS device). If there is a pilot light on the starter device, it should light up. If the "low/high" settings are available, use them as follows: Low : low pressure washing High : high pressure washing Set the starter device switch on (OFF/0) to shut down the appliance. If there is a pilot light on the starter device, it should go out. During operation the appliance must be positioned as shown in fig. Any maintenance operations not covered by this chapter should be carried out by an Authorized Sales and Service Centre. Always disconnect the plug from the power socket before carrying out any work on the appliance. [. . . ] To unjam the motor, turn the drive shaft with a tool (M). Treat the appliance with non-corrosive, non-toxic antifreeze before storing it away for winter. Possible causes Nozzle worn Water filter fouled Water supply pressure low Air being sucked into system Air in pump Adjustable nozzle not positioned correctly Water intake from external tank Intake water too hot Nozzle clogged Insufficient power supply 5) Turn on water supply tap fully Check tightness of hose fittings Switch off the appliance and keep depressing and releasing the gun trigger until the water comes out in a steady flow. 5) Check that the voltage of the mains power supply line is the same as that on the plate (fig. [. . . ]