HOT WATER PRESSURE WASHERS

Transcription

1 HOT WATER PRESSURE WASHERS MODEL HW-1002, HW-1503, & HW-2904 OPERATING AND MAINTENANCE INSTRUCTIONS Goodway is a trademark of Per K. Reichborn Goodway Technologies Corporation 420 West Avenue Stamford, CT Sales: Customer Service: Fax: goodway@goodway.com Internet:

2 Index Important safety instructions 3 Grounding Instructions 3 Ground fault circuit interrupter protection 4 Extension cords 4 Cautions 4 Electric Motor 4 About the oil burner/boiler 5 Boiler/burner safety 5 Fuel oil filter 5 Heating coil 5 Pump lubrication 6 Changing pump oil 6 Getting ready 6 Break in period 6 Operation 6 Spray nozzles 7 Soap or chemical application 7 Shutdown 7 Cold weather storage 7 Pump repairs 8 Maintenance 8 Troubleshooting 9 Components and equipment 10 2

3 IMPORTANT SAFETY INSTRUCTIONS WARNING: When using this product basic precautions should always be followed, including the following: 1. Read all the instructions before using the product. 2. To reduce the risk of injury, close supervision is necessary when this product is used near children. 3. Know how to stop the product and bleed pressures quickly. Be thoroughly familiar with the controls. 4. Stay alert - watch what you are doing. 5. Do not operate the product when fatigued or under the influence of alcohol or drugs. 6. Keep operating area clear of all persons. 7. Do not overreach or stand on unstable support. Keep good footing and balance at all times. Use only certified scaffolding when necessary. 8. Follow the maintenance instructions specified in the manual. 9. Do not operate without eye protection. 10. Follow the maintenance instructions specified in the manual. 11. Use only Goodway recommended attachments. 12. The Model HW-1002 and HW-1503 are provided with a Ground Fault Circuit Interrupter (GFCI) built into the power cord. If replacement of the plug or cord is needed, use only identical replacement parts. 13. BURN HAZARD: Do not touch the boiler housing or metal part of wand when operating unit in the hot wash mode. The use of insulated gloves will help avoid accidental burns. WARNING - Risk of Injection or Injury - Do Not Direct Discharge Stream At Persons. This product is to be used only by trained operators. SAVE THESE INSTRUCTIONS GROUNDING INSTRUCTIONS This product must be grounded. If it should malfunction or break down, grounding provides a path of least resistance for the electric current to reduce the risk of electric shock. This product is equipped with a cord having an equipment-grounding conductor and a grounding plug. The plug must be plugged into an appropriate outlet that is properly installed and grounded in accordance with all local codes and ordinances. DANGER - Improper connection of the equipment-grounding conductor can result in a risk of electrocution. Check with a qualified electrician or service personnel if you are in doubt as to whether the outlet is properly grounded. Do not modify the plug provided with the product - if it will not fit 3

4 the outlet, have a proper outlet installed by a qualified electrician. Do not use any type of adapter with this product. GROUND FAULT CIRCUIT INTERRUPTER PROTECTION MODEL HW-1003 AND HW-1503 These pressure washers are provided with a Ground Fault Circuit Interrupter (GFCI) attached to the power supply cord. This device provides additional protection from the risk of electrical shock. Should replacement of the cord or plug become necessary, use only identical replacement parts that include GFCI protection. EXTENSION CORDS Use only 3-wire extension cords that have 3-prong grounding-type plugs and 3-pole cord connectors that accept the plug from the product. Use only extension cords that are intended for outdoor use. These extension cords are identified by a marking "Acceptable for use with outdoor appliances; store indoors while not in use." Use only extension cords having an electrical rating not less than the rating of the product. Do not use damaged extension cords. Examine extension cords before using and replace if damaged. Do not abuse extension cord and do not yank on any cord to disconnect. Keep cord away from heat and sharp edges. Always disconnect the extension cord from the receptacle before disconnecting the product from the extension cord. WARNING - To reduce the risk of electrocution, keep all connections dry and off the ground. Do not touch plug with wet hands. CAUTIONS 1. Avoid exposing the machine to freezing temperatures as the pump housing and heating coil may crack if water is allowed to freeze in the unit. If the unit must be exposed to freezing conditions, follow the instructions under COLD WEATHER STORAGE. 2. DO NOT RUN THE PUMP DRY FOR MORE THAN 15 SECONDS. 3. When the pump is running without spraying, the bypass valve allows the water to circulate around the pump. This condition will gradually elevate the temperature through friction. Frequent or prolonged bypass can result in high temperature build-up. These high temperatures can cause premature failure of the pump. RUNNING THE PUMP WITHOUT SPRAYING FOR MORE THAN A FEW MINUTES IS NOT RECOMMENDED. Do not attempt to change the factory settings of the bypass valve or the nozzle orifice size. Doing so may create an unsafe condition and shorten the life of the pump. 4. Do not spray water onto the machine housing or into the boiler as serious damage can result, voiding the warranty. 5. Do not smoke while filling fuel tank. Do not use this product where flammable liquids or vapors are present. ELECTRIC MOTOR These models utilize an electric motor equipped with thermal overload protection. The motor drives a three plunger oil bath pump. Should the motor overheat, the thermal overload will cut off power to the motor. The overload is automatically reset when the motor cools down sufficiently. ALWAYS 4

5 DETERMINE AND CORRECT THE CAUSE OF THERMAL OVERLOAD BEFORE USING THE MACHINE AGAIN. ABOUT THE OIL BURNER/BOILER These units are equipped with an oil-fired boiler, which can be fired on #1 or #2 fuel oil or diesel fuel. Most burner service can be performed locally by a qualified oil burner service technician. NEVER REMOVE THE BURNER HOUSING FROM THE UNIT AS DAMAGE TO THE BOILER INSULATION WILL RESULT. ALL BURNER SERVICE CAN BE PERFORMED WITH THE BURNER HOUSING IN PLACE. WARNING: NEVER PUT GASOLINE IN THE BURNER FUEL TANK. WARNING: DO NOT WRAP HOSES OR ELECTRICAL CORDS AROUND THE BOILER HOUSING. DAMAGE AND SERIOUS INJURY MAY RESULT. BOILER/BURNER SAFETY - ALL MODELS 1. Keep combustible materials a minimum of 48" (1200 mm) from the sides of the boiler housing. 2. Do not install a stack pipe on this product as it will impede airflow resulting in poor combustion and possible release of harmful fumes. 3. Do not exhaust gasses into a wall, ceiling, or confined space. 4. The use of a ducted exhaust hood is recommended for indoor operation. Otherwise, place the power unit outside the building. Do not, however, expose the machine to rain. 5. Always be mindful that there is an open flame at the top of the boiler when the burner is firing. Keep hands, hair, clothing and other combustible materials away. FUEL OIL FILTER These machines are equipped with a micron fuel oil filter, which is located on the fuel oil line under the machine housing. The fuel oil tank is also equipped with a filter to trap larger pieces of debris, which may get into the fuel oil supply. The micron filter should be changed and the fuel oil tank cleaned annually. HEATING COIL The heating coil in the boiler is constructed of high quality 1/2" (13mm) ID Sch. 80 steel tubing for long service. Proper care of the coil will maximize its life. Care should be taken to prevent objects from falling into the heating coil. Such objects could cause poor burner performance. In cases where very hard water is used, mineral scale can build up and restrict the water flow through the coil. It may be necessary to descale the coil annually. A coil descaler (part # HPW-DSC) is available from Goodway Technologies Corp. 5

6 PUMP LUBRICATION These units are equipped with an oil bath pump. When shipped, the crankcase is filled with the proper amount of oil. Due to the possibility of spillage in shipment, the oil level should be checked prior to the first use of the machine, as well as prior to each use. With the machine resting on a level surface, the correct oil level should reach the middle of the sight glass on the side of the pump. If the oil level is low, add sufficient oil to the crankcase. DO NOT OVERFILL. Use SAE 20 or SAE 30 oil. CHANGING PUMP OIL Pump oil should be changed after the first 50 hours of operation and then after every hours. GETTING READY 1. Check all oil level before any operation to ensure good start up and problem free performance. 2. Connect a clean water hose capable of delivering 4 GPM (15.14 LPM) to the hose fitting located on the pump inlet. Make sure the water filter is clean and in place.. Consult the Goodway catalog for heavy-duty water supply hose (part # WSH-R50). NOTE: Any restriction in the water supply may cause cavitation and pump damage. Positive inlet pressure above 25 PSI (1.7 BAR) is required to avoid cavitation. DO NOT RUN DRY. 3. Connect the high-pressure hose to the outlet fitting located on the side of the boiler housing. 4. Connect the gun to the high-pressure hose. 5. Insert the dip tube into a container of soap or chemical, if used. See " SOAP OR CHEMICAL APPLICATION" for a more detailed explanation on using soap or chemicals. 6. Turn on the water supply, and with no quick disconnect nozzle in place, trigger the gun for a few minutes to allow trapped air, dirt particles or mill scale to escape from the system. Reinstall the desired quick disconnect nozzle. NOTE: Always be sure when operating the machine that the nozzle is not clogged or restricted in any way. CAUTION: ALWAYS ENGAGE THE TRIGGER LOCK WHEN CHANGING NOZZLES. BREAK IN PERIOD CAUTION: The motor/pump assembly of a new machine needs to be broken in briefly. Operate the machine for no more than one hour. Allow the machine to cool for one hour. Repeat this procedure four or five times. OPERATION 1. Trigger the gun and turn the unit on by depressing the green pushbutton switch. Allow the unit to attain full pressure. 2. Select the desired water temperature by adjusting the thermostat control. 6

7 SPRAY NOZZLES These units are supplied with 5 quick disconnect nozzles a low pressure nozzle for chemical application, a 0 pinpoint spray, a 15 fan spray, a 25 fan spray and a 40 fan spray. The low pressure nozzle activates the siphon injector to draw soap or chemical into the water stream. The high pressure nozzles are used for rinsing. To switch from one nozzle to another simply: 1. Release the trigger to stop the spray action and engage the trigger lock. 2. Pull back the locking collar to release the nozzle. 3. Insert another nozzle until the locking collar snaps into place. CAUTION: NOZZLES MAY BE HOT. SOAP OR CHEMICAL APPLICATION 1. Place the strainer end of the siphon hose into your container of premixed chemical solution. The siphon injector draws at a rate of 1 part chemical to 8 parts water when the soap valve is wide open. Dilute your chemical, if necessary, to the proper level to obtain the final ratio recommended by the chemical manufacturer. ALWAYS USE LIQUID CONCENTRATES TO PREVENT CLOGGING THE SIPHON INJECTOR. 2. Chemicals are applied at low pressure and are drawn through the water system of the machine. Application is controlled by the valve on the wand. Turning the handle on the left side of the wand counter clockwise (or away from you) will start and gradually increase the chemical draw. Turning the handle clockwise (or towards you) will decrease and eventually shut off the chemical draw. It takes several seconds for the chemical to travel through the boiler coil and high-pressure hose to the nozzle. Chemical application is not instantaneous and chemical spray continues for several seconds after switching to high pressure. SHUTDOWN When shutting down from hot water operation, allow the boiler to cool gradually. Move the main switch to the cold water washing position (#2 ) and leave the gun trigger open for a few minutes before turning the machine completely off. Once the unit is turned off, trigger the gun to relieve pressure. COLD WEATHER STORAGE If the machine must be stored in an area subject to freezing temperatures, observe the following instructions: 1. Prepare a five-gallon pail with at least three gallons of anti-freeze mixture. 2. Run a feed hose from the pail to the pump inlet. 3. Place the end of the wand in the pail and trigger the gun. 4. Run the unit in the cold water wash mode until the anti-freeze mixture is seen discharging from the wand. The machine, hose, gun and wand are now protected against freezing. 7

8 PUMP REPAIRS When pump repairs are required, the pump, bypass valve and plumbing can be removed from the unit and sent to the factory for repair. Customer repair of the pump is not recommended as improper reassembly of the pump can result in an unsafe condition. In addition, often times problems that seem to be pump related are caused by faulty bypass valves or other components in the pressure system. It is not necessary to return the entire machine to have pump repairs performed. FACTORY REPAIR OF THE BYPASS VALVE IS RECOMMENDED. IF THE BYPASS VALVE IS NOT PROPERLY ADJUSTED, PUMP DAMAGE CAN RESULT. NEVER CHANGE THE FACTORY SETTING OF THE BYPASS VALVE. MAINTENANCE 1. Every six months make a general check on the machine components looking for wear. 2. After using detergents or chemicals, it is recommended to insert the dip tube into a container of clean water and running the machine in the siphon mode for several minutes to flush the system. 3. Monthly, check the water filter and clean as needed. 4. Every six months, check the pump oil level and top off as needed. Change the oil once annually with SAE20 or SEA 30 oil. 5. Check the fuel filter monthly and replace as needed. 8

9 TROUBLESHOOTING Problem Probable Causes Remedy Pump runs but no spray Water not turned on Turn on water Screen washer clogged Clean washer Spray nozzle clogged Clean nozzle Water comes out of dip tube Siphon injector clogged Clean siphon injector Ball and/or spring missing Check for proper assembly Will not draw chemical Siphon injector clogged Clean siphon injector Pressure too high Switch to low pressure nozzle Pressure and/or flow drops Worn or damaged nozzle Replace nozzle Fouled inlet strainer Clean strainer Worn or damaged hose Repair or replace hose Cavitation Check suction line on pump inlet for restrictions Leakage in the hi pressure Check all connections for stream leaks Pump damaged Return pump for repair Crankcase oil in pump milky Water in crankcase Return pump for new seals Noisy operation Worn pump bearings Return pump for repair Rough/pulsating operation with Bypass valve failure Replace bypass valve pressure drop Pump damage Return pump for repair Pump pressure as rated, Restricted discharge plumbing Resize discharge to flow Pressure drop at gun rate of pump Motor stops Overloaded due to long run Unplug and let motor cool without spraying down Extension cord too long Change extension cord or inadequate size Fuse blown Plug into adequately fused outlet Burner will not ignite Dirty burner nozzle Clean nozzle Empty fuel oil tank Fill with fuel oil Switch in cold wash position Switch to hot wash position Burner failure Consult a qualified service No spark technician Check transformer Check electrodes White smoke coming from burner Excess air in burner Adjust diesel fuel pressure to 145 PSI (10 BAR) 9

10 COMPONENTS AND EQUIPMENT Lance & gun assembly 2. Top cover 3. Cord holder with cord 4. High pressure hose connection 5. On/Off switch 4 6. Temperature control Diesel Fuel Tank 8. Quick connect nozzles Syphon Injector 10. Frame 11. Pump Gauge 13. Feed water connection. 9 10