Pressure Washer Operations Manual
WARNING HIGH PRESSURE SPRAY CAN CAUSE SERIOUS INJURY Never point or aim the gun/wand at yourself or anyone else. Never put your hand, fingers or body directly in front of the spray nozzle. RISK OF INJECTION OR SEVERE INJURY TO PERSONS. KEEP CLEAR OF NOZZLE. CAUTION A. KNOW YOUR PRESSURE WASHING EQUIPMENT READ YOUR OWNERS MANUAL CAREFULLY. Do not operate your power washer until you completely understand and can follow all operating instructions, precautions and safety rules.
PRECAUTIONS FOR GASOLINE ENGINES/ELECTRIC MOTORS WARNING RISK OF FIRE. DO NOT ADD FUEL WHEN OPERATING MACHINE. WARNING RISK OF ASPHYXIATION. USE ONLY IN A WELL VENTILATED AREA. WARNING RISK OF EXPLOSION: DO NOT SPRAY FLAMMABLE LIQUIDS WARNING RISK OF ELECTRICAL SHOCK. HAZARDOUS VOLTAGE CAN SHOCK, BURN OR CAUSE DEATH. GROUND SYSTEM BEFORE CONNECTING TO POWER SUPPLY.
INITIAL SETUP AND OPERATION OF YOUR NEW PRESSURE WASHER Inspection for freight damage When you receive your commercial pressure washer be sure you check for concealed freight damage. Any damage should be noted with the delivering carrier. If you have any questions related to freight call your selling dealer. Inspection of oil levels Check all oil levels in the pump or engine if applicable. Failure to check all levels could result in pressure washer damage.
The Unloader Valve Pressure cleaners are built with one of two types of unloaders: The Trapped Pressure Unloader or the Flow Actuated Unloader. After the pump is filled with water, the direction of water flow must be controlled with the unloader or regulating valve.
NOZZLE SELECTION GUIDE Spray nozzle can be identified by the nozzle “number”, a five or six digit number that is stamped on the nozzle, which indicates the spray angle and orifice size. In most cases the second and third digits of the nozzle number indicate the spray angle in degrees. EXAMPLE: 00 is 0 degrees, 15 is 15 degrees and 40 is 40 degrees. The last two numbers of the nozzle number indicated the orifice size, a standard industry designation. EXAMPLE: 60 is a 6.0 orifice, 55 is a 5.5 orifice.
SHUT DOWN PROCEDURE STORAGE 1. Turn off the power switch on the commercial pressure washer. 2. Relieve pressure on line by pulling trigger gun. 3. Shut off water supply and disconnect garden hose. 4. Be sure to check for water leaks or oil leaks that should be repaired before the next operation. 5. If you are going to store the machine for extended period of times in cold climates be sure to antifreeze the equipment.
TROUBLESHOOTING COMMON PROBLEMS AND SOLUTIONS Low Nozzle Pressure Low nozzle pressure is a common complaint. In a majority of instances, low nozzle pressure is generally caused by one of the following: 1. Obstructed or clogged nozzle tip. 2. Obstructed or clogged inlet filter. 3. Unloader valve stuck open due to debris lodged under the check valve ball. 4. Customer use of shutoff-type quick connectors. 5. Plugged or obstructed hose. 6. Insufficient flow in gallons per minute (not pressure) to the pump.
3. A piece of debris may be caught in the injector valve, injector ball valve, or orifice. Disassemble and clean the injector. 4. If you have an adjustable nozzle, be sure it is in the low pressure position (away form the gun) to draw soap. Notice User maintenance procedures include replacing valves and seals. Unloader components are not user serviceable. Repairs involving unloaders and crankcase components should be referred to the factory or a factory authorized repair center.
PROBLEM POSSIBLE CAUSE SOLUTION LOW OPERATING PRESSURE Valves sticking Check and clean or replace if necessary. Unloader valve seat faulty Check and replace if necessary. Valves worn Check and replace if necessary. Blockage in valve Check and replace if necessary. Worn piston packing Check and replace if necessary. Air in suction line Check water supply and connections on suction line. Broken or weak inlet or discharge valve springs Check and replace if necessary.
PROBLEM POSSIBLE CAUSE SOLUTION DETERGENT NOT DRAWING Incorrect nozzle or adjustable nozzle in wrong position. Install chemical nozzle or push adjustable nozzle forward (away from gun). Dried up detergent plugging metering valve injector Disassemble and clean thoroughly. High viscosity of detergent Dilute detergent to specifications. Hole in detergent line(s) Repair hole. Low detergent level Add detergent, if needed. Pump sucking air Check water supply and possibility of air seepage.
PROBLEM POSSIBLE CAUSE ENGINE WILL NOT START BUT WILL CRANK OVER Low oil shut down is activated Add oil to engine, check more frequently. ENGINE BOGS DOWN UNDER LOAD, WHENEVER SPRAY GUN IS TRIGGERED ELECTRIC MOTOR DOES NOT START SOLUTION Engine low or out of fuel Add Fuel. Fuel filter is clogged Replace or clean fuel filter. Fuel supply valve-off Turn on fuel supply valve. Engine flooded or starved Choke only as required.
MAINTENANCE SCHEDULE OIL CHANGE RECORD Check pump oil level before first use of your new pressure washer. Change pump oil after first 50 hours and every 3 months or 300 hours thereafter. Use SAE 30 weight oil, non-detergent.
