Einbauanleitung Snow Way

The hydraulic power unit consists of:12V DC MotorHydraulic pump rated at 1.12 GPM @ 1500 PSI1.35 quart capacity reservoirfine mesh intake and return filtersFilter screens on all outlet portsThe fluid supply line for the pump is submerged in thehydraulic fluid reservoir and is equipped with a fine meshintake filter screen.The 12V DC motor is protected electrically by 150 ampcircuit breaker located between the battery and the motorsolenoid.The hydraulic pump is protected by a 1750 PSI systemrelief valve.If this unit is equipped with a down pressure option, thiswill allow the operator to selectively switch the system toprovide additional hydraulic force to the cutting edge ofthe plow.IMPORTANT: The electric coils, which operate thesolenoid valves, require a minimum of 9-1/2 volts DCfor proper operation. Lower voltage will cause erraticoperation, or failure to operate.Each coil is actuated by completing a circuit to groundthrough the coil and the circuit board by means of a signalto the circuit board from the hand- held controller in thevehicle, either by a wire transmitted signal or a radiosignal.Actuating the ’Raise’ switch on the hand-held controllersends a signal to the control circuit board on the plow,which then actuates the motor start solenoid and the coilfor the ’C’ valve.Actuating the start solenoid sends current to the powerunit motor to cause the power unit to pump hydraulic fluid.Hydraulic fluid under pressure is directed through the ’C’valve to the lift cylinder causing it to extend and raise theplow. On down pressure plows, the ’F’ valve is alsoactuated to allow fluid in the rod end of the double actingraise cylinder to return to the reservoir.When the ’Raise’ switch on the hand-held controller isreleased, the start solenoid circuit is broken, the motorstops, the circuit to the coil for the ’C’ valve and (if a downpressure plow) the ’F’ valve is broken and these valves goto their normally closed positions.The hydraulic controls consist of:System pressure relief valve, set to 1750 PSIOne crossover relief valve, set to 2000 PSITwo three-way two position hydraulic valves for angleleft or right functionsTwo single acting hydraulic cylinders for angle left andright functionsOne three-way two position, one two-way two positionvalve, and one check valve for raise and lower functionfor gravity plowsOne three-way two position, three two-way two positionvalves and two check valves for raise, lower and downpressure functions for down pressure plowsOne down pressure relief valve for down pressureplowsActuating the ’Lower’ switch on the hand-held controllersends a signal to the control circuit board on the plow.This actuates the coil for the ’B’ valve and (if a downpressure plow) the ’F’ valve, allowing hydraulic fluid toflow from the lift cylinder to the reservoir.Once the ’Lower’ switch has been actuated, the systemwill stay in this mode until the ’Raise’ function is actuatedor control is shut off, allowing hydraulic fluid to flowbetween the reservoir and the lift cylinder. This allows thelift cylinder to extend and retract as necessary to followground contours while plowing.All hydraulic functions are controlled by the 12V DCelectrical system which actuates coils on the hydraulicvalves and the solenoid for the electric motor of the powerunit.12V DC power is fed from the battery post of the motorstart solenoid to a control circuit board on the plow andfrom the circuit board to each coil.