KAERCHER SSG-403037E Shark Group Gas Hot Water Instruction Manual
- May 15, 2024
- kaercher
Table of Contents
KAERCHER SSG-403037E Shark Group Gas Hot Water
Product Information
Specifications:
- Model Variants: SSG-403037E, SSG-503027E, SSG-503027E/G, SSG-503537E, SSG-503537E/G, SSG-603537E, SSG-603537E/G, SSG-503537E/G
- Machine Data Label: 1.110-579.0, 1.110-580.0, 1.110-581.0, 1.110-582.0, 1.110-583.0, 1.110-584.0, 1.110-585.0, 1.110-603.0
Product Usage Instructions
Safety:
Before operating the pressure washer, ensure you thoroughly read and
understand the safety instructions provided in the manual. Make sure to follow
all safety precautions to prevent accidents and injuries.
Operations:
Familiarize yourself with the operation and functions of the pressure washer
by referring to the OPERATIONS section of the manual. Understand how to use
the different features and settings for optimal performance.
Maintenance:
Regular maintenance is essential to keep your pressure washer in good working
condition. Follow the Preventative Maintenance guidelines outlined in the
manual to ensure the longevity of your machine. Refer to the Maintenance Chart
for scheduled maintenance tasks.
Parts:
For any parts replacement or repair, refer to the Parts List section of the
manual. Make sure to order the correct parts by providing the machine model
and serial number located on the back of the machine.
FAQ:
-
Q: Where can I find the model and serial number of my pressure washer?
A: The model and serial number are located on the back of the machine. -
Q: How often should I perform maintenance on the pressure washer?
A: Refer to the Maintenance Chart in the manual for scheduled maintenance tasks. Perform preventive maintenance regularly to keep your machine in good working condition.
Machine Data Label
MODELS:
-
SSG-403037E
1.110-579.0 -
SSG-503027E
1.110-580.0 -
SSG-503027E/G
1.110-581.0 -
SSG-503537E
1.110-582.0 -
SSG-503537E/G
1.110-583.0 -
SSG-603537E
1.110-584.0 -
SSG-603537E/G
1.110-585.0 -
SSG-503537E/G
1.110-603.0
How To Use This Manual
This manual contains the following sections:
- How to Use This Manual
- Safety
- Operations
- Maintenance
- Parts List
The HOW TO USE THIS MANUAL section will tell you how to find important information for ordering correct repair parts.
Parts may be ordered from authorized dealers. When placing an order for parts, the machine model and machine serial number are important. Refer to the MACHINE DATA box which is filled out during the installation of your machine. The MACHINE DATA box is located on the inside of the front cover of this manual.
The model and serial number of your machine are located on the back of the machine.
- The SAFETY section contains important information regarding the hazardous practices of the machine. Levels of hazards are identified that could result in product damage, personal injury, or severe injury resulting in death.
- The OPERATIONS section is to familiarize the operator with the operation and function of the machine.
The MAINTENANCE section contains preventive maintenance to keep the machine and its components in good working condition. They are listed in this general order:
- Storage
- Maintenance
- Troubleshooting
The PARTS LIST section contains assembled parts illustrations and a corresponding parts list. The parts lists include several columns of information:
- REF – column refers to the reference number on the parts illustration.
- PART NO. – The column lists the part number for the part.
- QTY – column lists the quantity of the part used in that area of the machine.
- DESCRIPTION – The column is a brief description of the part.
- NOTES – column for information not noted by the other columns.
NOTE:
- If a service or option kit is installed on your machine, be sure to keep the KIT INSTRUCTIONS that came with the kit. It contains replacement parts numbers needed for ordering future parts.
- The manual part number is located on the lower right corner of the front cover.
Introduction & Safety Information
- Thank you for purchasing this Kärcher Pressure Washer. We reserve the right to make changes at any time without incurring any obligation.
Owner/User Responsibility:
- The owner and/or user must have an understanding of the manufacturer’s operating instructions and warnings before using this pressure washer. Warning information should be emphasized and understood. If the operator is not fluent in English, the manufacturer’s instructions and warnings shall be read to and discussed with the operator in the operator’s native language by the purchaser/owner, making sure that the operator comprehends its contents.
- The owner and/or user must study and maintain for future reference the manufacturers’ instructions.
- The operator must know how to stop the machine quickly and understand the operation of all controls. Never permit anyone to operate the engine without proper instructions.
Save these Instructions:
- This manual should be considered a permanent part of the machine and should remain with it if the machine is resold.
- When ordering parts, please specify the model and serial number. Use only identical replacement parts.
- This machine is to be used only by trained operators.
WARNING:
To reduce the risk of injury, read operating instructions carefully before
using.
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Read the owner’s manual thoroughly. Failure to follow instructions could cause a malfunction of the machine and result in death, serious bodily injury, and/or property damage.
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Know how to stop the machine and bleed pressure quickly. Be thoroughly familiar with the controls.
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Stay alert — watch what you are doing.
WARNING: Keep wand, hose, and water spray away from electric wiring, or fatal electric shock may result. -
All installations must comply with local codes. Contact your electrician, plumber, utility company, or the selling distributor for specific details.
WARNING: This machine exceeds 85 dB appropriate ear protection must be worn.
WARNING: High-pressure spray can cause paint chips or other particles to become airborne and fly at high speeds. To avoid personal injury, eye, hand, and foot safety devices must be worn. -
Eye, hand, and foot protection must be worn when using this equipment.
-
Keep the operating area clear of all persons.
WARNING: Flammable liquids can create fumes that can ignite, causing property damage or severe injury.
WARNING: Risk of explosion — Operate only where open flame or torch is permitted. WARNING: Risk of fire — Do not add fuel when the product is operating or still hot.
WARNING: Risk of fire — Do not spray flammable liquids -
Allow engine to cool for 1-2 minutes before refueling. If any fuel is spilled, make sure the area is dry before testing the spark plug or starting the engine. (Fire and/or explosion may occur if this is not done.)
Gasoline engines on mobile or portable equipment shall be refueled:- outdoors;
- with the engine on the equipment stopped;
- with no source of ignition within 10 feet of the dispensing point; and
- with an allowance made for expansion of the fuel should the equipment be exposed to a higher ambient temperature.
In an overfilling situation, additional precautions are necessary to ensure that the situation is handled safely.
WARNING: Risk of injury. Disconnect the battery ground terminal before servicing.
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When in use, do not place the machine near flammable objects as the engine is hot.
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Oil-burning appliances shall be installed only in locations where combustible specks of dust and flammable gases or vapors are not present. Do not store or use gasoline near this machine.
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Use No. 1 or No. 2 heating oil (ASTM D306) only. NEVER use gasoline in your fuel oil tank. Gasoline is more combustible than fuel oil and could result in a serious explosion. NEVER use crankcase or waste oil in your burner. Fuel unit malfunction could result from contamination.
-
Do not confuse gasoline and fuel oil tanks. Keep proper fuel in the proper tank.
WARNING: Risk of injury. Hot surfaces can cause burns. Use only designated gripping areas of the spray gun and wand. Do not place hands or feet on non-insulated areas of the pressure washer. -
Transport/Repair with fuel tank EMPTY or with fuel shut-off valve OFF.
CAUTION: Hot discharge fluid. Do not direct discharge stream at people or animals or severe injury or death will result.
WARNING: This machine produces hot water and must have insulated components attached to protect the operator. -
To reduce the risk of injury, close supervision is necessary when a machine is used near children. Do not allow children to operate the pressure washer. This machine must be attended to during operation.
WARNING: Grip the cleaning wand securely with both hands before starting. Failure to do this could result in injury from a whipping wand. -
Never make adjustments to the machine while in operation.
-
Be certain all quick coupler fittings are secured before using a pressure washer.
WARNING: High pressure developed by these machines will cause personal injury or equipment damage. Keep clear of the nozzle. Use caution when operating. Do not direct discharge stream at people, or severe injury or death will result. WARNING: Protect the machine from freezing. -
To keep the machine in the best operating conditions, you must protect the machine from freezing. Failure to protect the machine from freezing could cause malfunction of the machine and result in death, serious bodily injury, and/or property damage. Follow the storage instructions specified in this manual.
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Inlet water must be clean fresh water and no hotter than 90°F.
WARNING: Risk of asphyxiation. Running this product indoors can result in death due to carbon monoxide, a poisonous gas you cannot see or smell. Never operate indoors, even if windows and doors are open. Only use outdoors and far away from windows, doors, and openings or vents. -
Avoid installing machines in small areas or near exhaust fans. Adequate oxygen is needed for combustion or dangerous carbon monoxide will result.
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The manufacturer will not be liable for any changes made to our standard machines or any components not purchased from us.
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The best insurance against an accident is precautionary and knowledge of the machine.
WARNING: Be extremely careful when using a ladder, scaffolding, or any other relatively unstable location. The cleaning area should have adequate slopes and drainage to reduce the possibility of a fall due to slippery surfaces. -
Do not allow acids, caustic, or abrasive fluids to pass through the pump.
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Never run the pump dry or leave the spray gun closed longer than 1-2 minutes.
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Machines with shut-off spray guns should not be operated with the spray gun in the off position for extensive periods as this may cause damage to the pump.
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Protect discharge hose from vehicle traffic and sharp objects. Inspect the condition of the high-pressure hose before use or bodily injury may result.
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Before disconnecting the discharge hose from the water outlet, turn the burner off and open the spray gun to allow the water to cool below 100° before stopping the machine. Then open the spray gun to relieve pressure. Failure to properly cool down or maintain the heating coil may result in a steam explosion.
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Do not overreach or stand on unstable support. Keep good footing and balance at all times.
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Do not operate this machine when fatigued or under the influence of alcohol, prescription medications, or drugs.
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In oil-burning models, use only kerosene, the No. 1 home heating fuel, or diesel. If diesel is used, add a soot remover to every tankful.
WARNING:
If a connection is made to a potable water system, the system shall be
protected against backflow.
Follow the maintenance instructions specified in the manual.
Operations
Component Identification
- Pump — Delivers a specific gpm to the high-pressure nozzle which develops pressure.
- Starter Grip — Used for starting the engine manually.
- Spray Gun — Controls the application of water and detergent onto a cleaning surface with a trigger device. Includes safety latch.
- Unloader Valve — A Safety device that allows pressure to be released when the spray gun is closed.
- High-Pressure Hose — Connect one end to the water pump discharge nipple and the other end to the spray gun.
- Adjustable Thermostat — Safety control that prevents temperatures from going above the adjustable setting.
- Wand — Must be connected to the spray gun.
NOTE:
- If the trigger on the spray gun is released for more than 2 minutes, warm water will discharge from the pump protector onto the floor. This system prevents internal pump damage.
- If a flue adapter is installed, the burner assembly air adjustment must be adjusted.
Assembly Instructions
- STEP 1: Attach the high-pressure hose to the spray gun by threading the twist connect onto the spray gun inlet. Use Teflon tape or sealant
- STEP 2: Remove the Wand end and first place the o-ring followed by the high-pressure nozzle as shown. Replace the end of the wand.
- STEP 3: Remove the shipping cap and install the oil dipstick (Depending on the type of shipping, the dipstick may already be installed). Check the pump oil level by using a dipstick or observe the oil level in the oil window (if equipped). Use 30 wt. nondetergent oil.
- STEP 4: Connect the high-pressure hose to the pump discharge fitting. Thread twist connects to discharge fitting by turning clockwise.
- STEP 5: Connect a garden hose to the cold water source.
- STEP 6: Check inlet filters, remove debris, then connect the garden hose to pump water inlet.
CAUTION: Do not run the pump without water or pump damage will result.
Battery Installation
Local purchase of battery will be the responsibility of the owner, except when the machine is purchased with a factory-installed battery option (8.904-051.0). Automotive type 12 Volt Group 24 battery is recommended for placement within the weather-resistant box. Follow safety and installation instructions furnished with the battery. Red Cable is attached to the battery (+) positive terminal, black cable is connected to the battery (-) negative terminal.
Operating Instructions
STEP 1:
Check engine oil level. The oil level should be level to the fill markings on
the dipstick. Be sure the machine is level when checking the oil level. (Refer
to the engine’s operating manual included with the machine.) We recommend that
the oil be changed after the first 5 hours of use, then once every 100 hours.
Note: Improper oil levels will cause the low oil sensor to shut off the
engine.
CAUTION:
Do not run the engine with high or low oil levels as this will cause engine
damage.
STEP 2:
Fill the gas tank with unleaded gasoline. Do not use leaded gasoline.
-
STEP 3:
Connect a garden hose to the cold water source and turn the water on completely. Never use hot water. -
STEP 4:
Before installing the pressure nozzle, trigger a spray gun to eliminate trapped pressure. Then run the machine, allowing water to flush through the system until clear. Engage the safety latch before inserting a high-pressure nozzle.
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STEP 5: Pull the choke lever out to the “Choke” position (on a warm engine, leave the choke lever in the run position). Push the choke lever to the “Closed” position. To restart a warm engine, leave the choke lever in the “Open” position.
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STEP 6: (Non-Electric Start Models) Pull the starter grip. If the engine fails to start after 2 pulls, squeeze the trigger gun to release pressure and repeat the step. Return the starter gently. After the engine warms up enough to run smoothly, move the choke to the run position and the throttle to the fast position.
WARNING: Starter cord kickback (rapid retraction) can result in bodily injury. Kickback will pull your hand and arm toward the engine faster than you can let go. Always relieve spray gun pressure before pulling the starter cord. Pull the starter cord slowly until resistance is felt, then pull rapidly
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STEP 7: (Electric Start Models) Turn the engine switch to the “Start” position.
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STEP 8: (Electric Start Models) Turn the key to the START position, and hold it there until the engine starts. If the engine fails to start within 5 seconds, release the key, and wait at least 10 seconds before operating the starter again.
- Using the electric starter for more than 5 seconds at a time will overheat the starter motor and can damage it.
- When the engine starts, release the key, allowing it to return to the ON position. If the choke knob has been pulled to the CLOSED position to start the engine, gradually push it to the OPEN position as the engine warms up.
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STEP 9: Turn the burner switch “ON”. Turn the thermostat dial to the 210° mark.
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STEP 10: (Pump Steam Option)
- Operate the machine as instructed.
- Open the steam valve counterclockwise, which will lower pressure.
- Turn the thermostat knob to 250°F.
- When steam is no longer desired, Turn the steam valve clockwise and the thermostat knob to 200°F.
WARNING!
Never replace the nozzle without engaging the safety latch on the spray gun
trigger.
Detergents & General Cleaning Techniques
WARNING:
Some detergents may be harmful if inhaled or ingested, causing severe nausea,
fainting, or poisoning. The harmful elements may cause property damage or
severe injury. Read MSDS before handling.
- STEP 1: Use a detergent designed specifically for pressure washers. Household detergents could damage the pump. Prepare detergent solution as required by the manufacturer. Fill a container with pressure washer detergent. Place the filter end of the detergent suction tube into the detergent container.
- STEP 2: Open detergent metering valve.
- STEP 3: Detergent will be drawn into the pump and coil and discharged under pressure. Never use anything that will damage the pump and coil.
- STEP 4: With the engine running, pull the trigger to operate the machine. Liquid detergent is drawn into the machine and mixed with water. Apply detergent to the work area. Do not allow detergent to dry on the surface.
IMPORTANT:
You must flush the detergent from your machine after each use by placing the
suction tube into a bucket of clean water and then running the pressure washer
for 1-2 minutes.
Thermal Pump Protection
If you run the engine on your pressure washer for 3-5 minutes without pressing
the trigger on the spray gun, circulating water in the pump can reach high
temperatures. When the water reaches this temperature, the pump protector
engages and cools the pump by discharging the warm water onto the ground. This
thermal device prevents internal damage to the pump.
Cleaning Tips
Pre-rinse the cleaning surface with fresh water. Place the detergent suction
tube directly into the cleaning solution and apply to the surface at low
pressure (for best results, limit your work area to sections approximately 6
feet square and always apply detergent from bottom to top). Allow the
detergent to remain on the surface for 1-3 minutes. Do not allow detergent to
dry on the surface. If the surface appears to be drying, simply wet down the
surface with fresh water. If needed, use a brush to remove stubborn dirt.
Rinse at high pressure from top to bottom in an even sweeping motion keeping
the spray nozzle approximately 1 foot from the cleaning surface. Use over-
lapping strokes as you clean and rinse any surface. For best surface cleaning
action spray at a slight angle.
Recommendations:
- Before cleaning any surface, an inconspicuous area should be cleaned to test the spray pattern and distance for maximum cleaning results.
- If painted surfaces are peeling or chipping, use extreme caution as a pressure washer may remove the loose paint from the surface.
- Keep the spray nozzle a safe distance from the surface you plan to clean. High-pressure wash a small area, then check the surface for damage. If no damage is found, continue to pressure washing.
CAUTION – Never use:
- Bleach, chlorine products, and other corrosive chemicals
- Liquids containing solvents (i.e., paint thinner, gasoline, oils)
- Trisodium phosphate products
- Ammonia products
- Acid-based products
These chemicals will harm the machine and will damage the surface being cleaned.
Rinsing
It will take a few seconds for the detergent to clear. Apply safety latch to
spray gun. Remove the black soap nozzle from the quick coupler. Select and
install the desired high-pressure nozzle.
NOTE:
You can also stop detergent from flowing by simply removing the detergent
siphon tube from the bottle.
Shutting down & Cleaning Up
- STEP 1: Remove the detergent suction tube from the container and insert it into one gallon of fresh water. Open detergent metering valve. Pull the trigger on the spray gun and siphon the water for one minute. Close the detergent valve. Turn the burner switch off and continue spraying, allowing the water to cool to below 100°F.
- STEP 2: Turn off the engine.
- STEP 3: Turn off the water supply.
- STEP 4: Press the trigger to release water pressure.
- STEP 5: Disconnect the garden hose from the water inlet on the machine.
- STEP 6: Disconnect the high-pressure hose from the high-pressure outlet.
- STEP 7: Engage the spray gun safety latch.
Storage
CAUTION:
Always store your pressure washer in a location where the temperature will not
fall below 32°F (0°C). The pump in this machine is susceptible to permanent
damage if frozen. FREEZE DAMAGE IS NOT COVERED BY WARRANTY.
- Stop the pressure washer, and squeeze the spray gun trigger to release pressure.
- Detach water supply hose and high-pressure hose.
- Turn on the machine for a few seconds, until the remaining water exits. Turn the engine off immediately.
- Drain the gas and oil from the engine.
- Do not allow the high-pressure hose to become kinked.
- Store the machine and accessories in a room that does not reach freezing temperatures.
CAUTION: Failure to follow the above directions will result in damage to your pressure washer.
- Replenish engine oil to the upper level.
- Drain gasoline from the fuel tank, fuel line, fuel valve, and carburetor.
- Pour about one teaspoon of engine oil through the spark plug hole, pull the starter grip several times, and replace the plug. Then pull the starter grip slowly until you feel increased pressure which indicates the piston is on its compression stroke and leave it in that position. This closes both the intake and exhaust valves to prevent rusting of the cylinder.
- Cover the pressure washer and store in a clean, dry place that is well-ventilated away from open flame or sparks.
NOTE:
The use of a fuel additive, such as STA-BIL®, or an equivalent, will minimize
the formulation of fuel deposits during storage. Such additives may be added
to the gasoline in the fuel tank of the engine or the gasoline in a storage
container.
After Extended Storage
CAUTION:
Before restarting, thaw out any possible ice from pressure washer hoses, spray
guns, or wands.
Engine Maintenance
During the winter months, rare atmospheric conditions may develop which will
cause an icing condition in the carburetor. If this develops, the engine may
run rough, lose power, and may stall. This temporary condition can be overcome
by deflecting some of the hot air from the engine over the carburetor area.
NOTE: Refer to the engine manufacturer’s manual for service and maintenance of
the engine.
Maintenance
Preventative Maintenance
- Check to see that the water pump is properly lubricated.
- Follow winterizing instructions to prevent freeze damage to the pump and coils.
- Always neutralize and flush detergent from the system after use.
- If water is known to have high mineral content, use a water softener in your water system, or de-scale as needed.
- Do not allow acidic, caustic, or abrasive fluids to be pumped through the system.
- Always use high-grade quality cleaning products.
- Never run the pump dry for extended periods.
- Use clean fuel: kerosene, No. 1 fuel oil, or diesel. Clean or replace the fuel filter every 100 hours of operation. Avoid water-contaminated fuel as it will damage the fuel pump.
- If the machine is operated with smoky or eye-burning exhaust, coils will soot up, not letting water reach the maximum operating temperature.
- Never allow water to be sprayed on or near the engine or burner assembly or any electrical component.
- Periodically delete coils as per instructions.
- Check to see that the engine ne is properly lubricated.
It is advisable, periodically, to visually inspect the burner. Check the air inlet to make sure it is not clogged or blocked. Wipe off any oil spills and keep equipment clean and dry.
- The flow of combustion and ventilating air to the burner must not be blocked or obstructed in any manner.
- The area around the pressure washer should be kept clean and free of combustible materials, gasoline, and other flammable vapors and liquids.
Maintenance and Service
Unloader Valves:
Unloader valves are preset and tested at the factory before shipping.
Occasional adjustment of the unloader may be necessary to maintain correct
pressure.
Adjusting Unloader Valves:
Tampering with the factory setting may cause personal injury and/or property
damage and will void the manufacturer’s warranty.
Winterizing Procedure:
Damage due to freezing is not covered by warranty. Adhere to the following
cold weather procedures whenever the washer must be stored or operated
outdoors under freezing conditions. During winter months, when temperatures
drop below 32°F, protecting your machine against freezing is necessary. Store
the machine in a heated room. If this is not possible then mix a 50/50
solution of anti-freeze and water in the float tank. Turn the engine on to
siphon the anti-freeze mixture through the machine. If compressed air is
available, an air fitting can be screwed into the float tank by removing the
float tank strainer and fitting. Then inject the compressed air. Water will be
blown out of the machine when the trigger on the spray gun is opened.
High Limit Hot Water Thermostat:
For safety, each machine is equipped with a tempera-ture sensitive high-limit
control switch. If the water should exceed its operating temperature, the high
limit control will turn the burner off until the water cools then it will
automatically reset itself. The thermostat sensor is located on the discharge
side of the heating coil. The thermostat control dial is located on the
control panel.
Pumps:
Before running the pump check the pump crankcase for a proper oil level. A
proper oil level is indicated by the red dot in the sight glass or between the
high and low marks on the dipstick. Use only SAE 30 non-detergent oil. Change
the initial oil after the first 50 hours and then change the oil every 500
hours or every three months.
When draining oil, clean the inside of the crankcase to remove all impurities.
CAUTION:
When operating in damp places or with high-temperature fluctuations oil must
be changed immediately.
Cleaning of Coils:
In alkaline water areas, lime deposits can accumulate rapidly inside the
heating coil. This growth is increased by the extreme heat build-up in the
coil. The best preventative for liming conditions is to use high-quality
cleaning detergents. In areas where alkaline water is an extreme problem,
periodic use of a Coil Conditioner will remove lime and other deposits before
the coil becomes plugged. (See Deliming instructions for use of Coil
Conditioner.)
Deliming Coils:
Periodic flushing of coils or an optional float tank is recom-mended.
- Fill a container with 4 gallons of water, then add 1 lb. of deliming powder. Mix thoroughly. Pour the mixture into the float tank.
- Remove the wand assembly from the spray gun and put the spray gun into the float tank. Secure the trigger on the spray gun into the open position.
- Turn the engine on, allowing the solution to be pumped through coils back into the float tank. The solution should be allowed to circulate for 2- 4 hours or until the color changes.
- After circulating the solution, flush the entire system with fresh water. Clean out the float tank and then reinstall the wand assembly to the spray gun.
Removal of Soot from Heating Coil:
In the heating process, fuel residue in the form of soot deposits may develop
between the heating coil pipe, and block airflow which will affect burner
combustion. When soot has been detected on visual observation, the soot on the
coil must be washed off after following the coil removal steps (See Coil
Removal section).
Fuel:
- Use clean fuel oil that is not contaminated with water and debris. Replace the fuel filter and drain tank every 100 hours of operation.
- Use No.1 or No. 2 Heating Oil (ASTM D306) only. NEVER use gasoline in your burner fuel tank. Gasoline is more combustible than fuel oil and could result in a serious explosion. NEVER use crankcase or waste oil in your burner. Fuel unit malfunction could result from contamination.
Fuel Control System:
This machine utilizes a fuel solenoid valve located on the fuel pump to
control the flow of fuel to the combustion chamber. The solenoid, which is
normally closed, is activated by a flow switch when water flows through it.
When the operator releases the trigger on the spray gun, the flow of water
through the flow switch stops, turning off the electrical current to the fuel
solenoid. The solenoid then closes, shutting off the supply of fuel to the
combustion chamber. Controlling the flow of fuel in this way gives an
instantaneous burn-or-no-burn situation, thereby eliminating high and low
water temperatures and the combustion smoke normally associated with machines
incorporating a spray gun. Periodic inspection, to ensure that the fuel
solenoid valve functions properly, is recommended. This can be done by
operating the machine and checking to see that the burner is not firing when
the spray gun is in the OFF position.
Rupture Disk:
- If pressure from the pump or thermal expansion should exceed safe limits, the rupture disk will burst allowing high pressure to be discharged through a hose to the ground. When the disk ruptures it will need to be replaced.
- The ruptured disk should be replaced every two years.
Fuel Pressure Adjustment:
To adjust fuel pressure, First, install a pressure gauge into the port just
after the pump fuel exit. Turn the adjusting screw (located at the regulator
port) clockwise to increase, and counterclockwise to decrease. Do not exceed
200 psi or lower the pressure below 130 PSI, when checked at the post-pump
pressure port.
The fuel pressure may need to be adjusted due to altitude. For every 500 ft altitude above sea level, the boiling point of water goes down 1 °F. At high altitude environments, this boiling point change may require the heat input to be lowered so the water input does not turn to steam earlier than at the factory settings and activate the pressure sensors and pressure relief equipment when the unit is operated and much higher altitudes from factory settings or local dealer site settings. Check with your dealer before making local site fuel pressure adjustments.
Also, as ambient temperature changes seasonally, the fuel temperature in the feed tank and air temperature inlet can impact fuel flow. In more extreme temperatures, this local-site adjustment may also require different fuel nozzles for fuel inlet temperatures that are at seasonal extremes (higher or lower) in locations where the temperature changes are beyond moderate temperatures of between 40°F and 90°F. Colder temperatures will make for a thicker flow and less fine fuel spray while hotter temperatures will make for a thinner flow and a more fine spray with the same nozzle. Consider alternate nozzle configurations from the baseline factory-supplied nozzle for operating in such temperature extremes if performance is not meeting needs with air band and fuel pressure settings alone.
NOTE:
When changing the fuel pump, a by-pass plug must be installed in the return
line port or the fuel pump will not prime
Burner Nozzle:
Keep the tip free of surface deposits by wiping it with a clean, solvent-
saturated cloth, being careful not to plug or enlarge the nozzle. For maximum
efficiency, replace the nozzle each season.
Electrode Setting
SR Series Gage
KNA Part # 8.717-379.0
Oil Burner
- Burner Air Adjustment: The oil burner on this machine is preset for operation at altitudes below 500 feet. If operated at higher altitudes, it may be necessary to adjust the air band for a #1 or #2 smoke spot on the Bacharach scale.
- To adjust, start the machine and turn the burner ON. Loosen two locking screws found on the air band and close the air band until black smoke appears from the burner exhaust vent. Note the air band position. Next, slowly open the air band until white smoke just starts to appear. Turn the air band halfway back to the previously noted position. Tighten locking screws.
- For higher altitudes, the air band opening may need to be increased; for lower altitudes, the air band may need to be decreased.
- For higher humidity, the air band opening may need to be increased; for lower relative humidity, the air band may need to be decreased.
- For higher ambient temperatures the air band opening may need to be increased; for lower ambient temperatures, the air band opening may need to be decreased.
- Adjust to your operating location’s environment as needed for the best smoke spot and performance compliant with local, state, and federal regulations.
- Caution: If white smoke appears from the burner exhaust vent during start-up or operation, discontinue use and readjust air bands.
- NOTE: If a flue is installed, have a professional serviceman adjust your burner for a #1 or #2 smoke spot on the Bacharach scale.
Coil Removal:
Removal of coil because of freeze breakage, or to clean soot from it can be
done quickly and easily.
- Disconnect the hose from the pump to the inlet side of the coil.
- Carefully disconnect the thermostat sensor making sure you do not crimp the capillary tube.
- Remove the burner assembly from the combustion chamber.
- Remove the 3-3/8″ bolts from each side of the coil and tank assembly (these bolts are used to fasten the tank to the chassis).
- Remove fittings connected to the 1/2″ pipe nipples from the inlet and discharge sides of the coil.
- Remove the top tank wrap, bend back in the emulation tabs, and fold back the blanket.
- Remove bolts that hold down the coil to the bottom wrap.
- Remove coil.
- Replace or repair any insulation found to be torn or broken.
Remove insulation retainer plates.
Coil Reinstallation:
Reinstall the new or cleaned coil by reversing Steps 9 through 1.
Oil Change Chart
This pressure washer was produced with the best available materials and
quality craftsmanship. However, you as the owner have certain responsibilities
for the correct care of the equipment. Attention to regular preventative
maintenance procedures will assist in preserving the performance of your
equipment. Contact your dealer for maintenance. Regular preventative
maintenance will add many hours to the life of your pressure washer. Perform
maintenance more often under severe conditions.
Check the pump oil level before the first use of your new pressure washer. Change pump oil after the first 50 hours and every 3 months or 500 hours thereafter. Use SAE 30-weight oil, non-detergent.
- Date Oil Changed Month/Day/Year
- No. of Operating Hours Since Last Oil Change
- Brand Name and Type of Oil (See Above)
Maintenance Chart
Maintenance Operation| Every 8 Hrs or Daily| 25 Hrs or Weekly| 50 Hrs or
Monthly| 100 Hrs or Yearly| Yearly
---|---|---|---|---|---
Check Oil
| Pump| | X| | |
Engine| X| | | |
Change Oil
| Pump| | | | | X
Engine| | | X| |
Air Cleaner| Check| | Clean| |
Spark Plug| | | | X|
Check Valve Clearance| | | | | X
Fuel Tank Filter| | | | X|
Water Filter/Clean| Check| | | | X
Rupture Disk| Replace every 2 years
Troubleshooting
| PROBLEM | POSSIBLE CAUSE | SOLUTION |
|---|
LOW OPERATING PRESSURE
| Faulty pressure gauge| Install new gauge.
Insufficient water supply| Use a larger supply hose; clean the filter at the
water inlet.
Old, worn, or incorrect spray nozzle| Match nozzle number to machine and/or
replace with a new nozzle.
Belt slippage| Tighten or replace; use the correct belt.
Plumbing or hose leak| Check the plumbing system for leaks. Retape leaks with
teflon tape.
Faulty or misadjusted unloader valve| Adjust the unloader for proper pressure.
Install repair kit when needed.
Worn packing in the pump| Install new packing kit.
Fouled or dirty inlet or discharge valves in the pump| Clean inlet and
discharge valves.
Worn inlet or discharge valves| Replace with valve kit.
Obstruction in spray nozzle| Remove obstruction.
Leaking pressure control valve| Rebuild or replace as needed.
Slow engine RPM| Set engine speed to proper specifications.
Pump sucking air| Check the water supply and the possibility of air seepage.
Valves sticking| Check and clean or replace if necessary.
The unloader valve seat is faulty| Check and replace if necessary.
BURNER WILL NOT LIGHT
| Little or no fuel| Fill the tank with fuel.
Improper fuel or water in fuel| Drain the fuel tank and fill it with proper
fuel.
Clogged fuel line| Clean or replace.
Plugged fuel filter| Replace as needed.
Misadjusted burner air bands| Readjust air bands for a clean burn.
Little or no fuel pressure from the fuel pump| Increase fuel pressure to
specification and/or replace the fuel pump. Test with pressure gauge.
Faulty burner transformer| Test transformer for proper arc between contacts.
Replace as needed.
Disconnected or short in electrical wiring| All wire contacts should be clean
and tight. No breaks in the wire.
Flex coupling slipping on the fuel pump shaft or burner motor shaft| Replace
if needed.
On-Off switch defective| Check for electrical current reaching the burner
assembly with the burner switch on.
Heavy shooting on coil and burner can cause interruption of airflow and
shorting of electrodes| ****
Clean as required.
Improper electrode setting| Check and reset according to the diagram in Oper- actor’s Manual.
Fuel not reaching the combustion chamber
| Check the fuel pump for proper flow. Check solenoid flow switch on machines
with spray gun control, for proper on-off fuel flow control.
Clogged burner nozzle| Clean as required.
BURNER WILL NOT LIGHT
| Thermostat faulty or slow engine speed| Increase engine RPM to increase
voltage.
---|---|---
Flow switch malfunction| Remove, continuity test, and replace as needed.
Flow solenoid malfunction| Replace if needed.
FLUCTUATING PRESSURE
| Valves worn| Check and replace if necessary.
Blockage in valve| Check and replace if necessary.
Pump sucking air| Check water supply and air seepage at joints in the suction
line.
Worn piston packing| Check and replace if necessary.
Gasoline engine altitude
| The gasoline engine is preset for operation at altitudes below 1000 ft above sea level. If operated at higher altitudes, it may be necessary to install a high-altitude main jet in the carburetor. Contact your local authorized engine sales and service center for details.
MACHINE SMOKES WHILE BURNER UNIT IS RUNNING
OR
UNIT SMOKES AT COLD-START ONLY WHEN BURNER IS OFF
| Improper fuel or water in fuel| Drain the tank and replace the contaminated
fuel
Improper air adjustment| Readjust the air bands on the burner assembly
Fuel pressure is low <140 psi for burner| Adjust fuel pump pressure to
specifications
Burner nozzle is plugged or dirty| Replace nozzle. Check parts breakdown for
nozzle size
The burner nozzle spray pattern is faulty| Replace nozzle. Check parts
breakdown for nozzle size
Heavy accumulation of soot on coils and burner assembly| Remove coils and
burner assembly, and clean thoroughly Call the local dealer
Misaligned electrode setting| Realign electrodes to specifications
Obstruction in smoke stack| Check for insulation blockage or other foreign
objects
Low engine RPM| Increase RPM to correct specs. See serial plate
Fuel Pressure is too high for clean burn (fuel PSI above 140 and below 200)
and smokes when the burner is off| Reduce fuel pressure PSI/Increase air band
set for a cleaner without max water heat loss
LOW WATER TEMPERATURE
| Improper fuel or water in fuel| Replace with clean and proper fuel.
Low fuel pressure| Increase fuel pressure.
Weak fuel pump| Check fuel pump pressure. Replace the pump if needed.
The fuel filter is partially clogged| Replace as needed.
Soot build-up on coils not allowing heat transfer| Clean coils.
Improper burner nozzle| See specifications.
WATER TEMPERATURE TOO HOT| Incoming water to machine warm or
hot| Lower incoming water temperature.
Fuel pump pressure too high| See specifications for proper fuel pressure.
Fuel pump defective| Replace fuel pump.
RELIEF VALVE LEAKS WATER| Relief valve defective| Replace or
repair
__
WATER TEMPERATURE TOO HOT
| Detergent line sucking air| Tighten all clamps. Check detergent lines for
holes.
---|---|---
Defective temperature switch| Replace.
Incorrect fuel nozzle size| See specifications for proper fuel nozzle.
Insufficient water supplied| Check water G.P.M. to the machine.
Restricted water flow| Check nozzle for obstruction, and proper size.
__
__
PUMP NOISY
| Air in the suction line| Check the water supply and connections on the
suction line.
Broken or weak inlet or discharge valve springs| Check and replace if
necessary.
Excessive matter in valves| Check and clean if necessary.
Worn bearings| Check and replace if necessary.
THE PRESENCE OF WATER IN OIL| Oil seal worn| Check and replace if
necessary.
High humidity in the air| Check and change the oil twice as often.
__
WATER DRIPPING FROM UNDER PUMP
| Piston packing worn| Check and replace if necessary.
O-Ring plunger retainer worn| Check and replace if necessary.
Cracked piston| Check and replace if necessary.
Pump protector| Lower water supply pressure. Do not run with the spray gun
closed longer than 2 minutes
OIL DRIPPING| Oil seal worn| Check and replace if necessary.
EXCESSIVE VIBRATION IN DELIVERY LINE| __
Irregular functioning of the valves
| __
Check and replace if necessary.
__
__
__
__
DETERGENT NOT DRAWING
| Air leak| Tighten all clamps. Check detergent lines for holes.
The restrictor in a float tank is missing| Replace restrictor. Check for
proper orifice in the restrictor.
Filter screen on detergent suction hose plugged| Clean or replace.
Dried-up detergent plugging metering valve| 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.
__
THE PUMP RUNNING NORMALLY BUT THE PRESSURE IS LOW ON INSTALLATION
| Pump sucking air| Check the water supply and the possibility of air
seepage.
Valves sticking| Check and clean or replace if necessary.
Nozzle incorrectly sized| Check and replace if necessary (See serial plate for
proper size).
The unloader valve seat is faulty| Check and replace if necessary.
Worn piston packing| Check and replace if necessary.
__
BURNER MOTOR WILL NOT RUN
| Fuel pump seized| Replace fuel pump.
Burner fan loose or misaligned| Position correctly, and tighten the set screw.
Defective control switch| Replace switch.
Loose wire| Check and replace or tighten the wiring.
Defective burner motor| Replace motor.
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- Kärcher North America 6398 N Kärcher Way Aurora, CO 80019
- Phone: +1 800 444-7654