North Star Pressure Washer M157305G User Manual

M157305G  
ITEM NUMBER: 157305,306,307,308  
SERIAL NUMBER:  
HP:______ Volts:______ Amp:______ Ph:_____  
RPM:____ PSI:____ GPM:____ Nozzle Size:_____  
Pump:___________ Hose:______ Lance:_______  
Max. Discharge Temperature:_____________  
Proven Performance  
K - B AR I n d u s t r i e s , F a r i b a u l t , M N , 5 5 0 2 1  
Installation, Operation, and Maintenance Manual  
HOT WATER PRESSURE WASHER: Cleans dirty surfaces with high-  
pressure hot water.  
To the Owner:  
Thank you for purchasing a Northstar hot water pressure washer. Your machine is designed for long life,  
dependability, and the top performance you demand! Take time now to read through this manual so you will  
better understand the machine’s operation, maintenance and safety precautions. Everyone who operates this  
machine must read and understand this manual. The time you take now will prolong your machine’s life and  
prepare you for its safe operation. Enjoy the exceptional performance of your Northstar hot water pressure  
washer, the industry leader! The manufacturer reserves the right to make improvements in design and/or  
changes in specifications at any time without incurring any obligation to install them on units previously sold.  
Quick Facts  
Pump Oil  
Water  
Pump is shipped with oil. Change oil plug if and check pump oil level before starting.  
Use UTTO for Comet and Cat Pump oil (item# 22158) for Cat oil changes.  
Make sure your water flow is 20% higher than the pressure washer’s flow rate.  
Make sure your water is clean and particle free.  
Storage  
Spraying  
Chemicals  
Do not allow water to freeze in the pump, hose, coil, or spray gun.  
Use any North Star brand or equivalent pressure washer chemicals.  
Maintenance Pump Oil: change after first 50 hours, then every 3 months or 500 hours.  
Schedule  
Read and understand all manuals before operating.  
Any Questions, Comments, Problems or Parts Orders  
In the United States  
In the United Kingdom  
Call 02392639752  
Northstar Customer Service  
Call 1-800-270-0810  
Northern Tool and Equipment Co. (UK) Ltd.  
Unit 2, Keel Close,  
Hours: Monday - Friday 7:00 AM to 5:30 PM  
Saturday 7:30 AM-11:30 AM Central Time  
Portsmouth, Hants PO3 5QD, England  
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Grounding Instructions  
This product must be grounded. If it should malfunction or breakdown, grounding provides a path of least resistance for  
electric current to reduce the risk of electrical 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 the outlet, have a proper outlet installed by a qualified electrician. Do not  
use any type adapter with this product.  
1. For a product rated 125 volts or less:  
GROUND FAULT CIRCUIT INTERRUPTER PROTECTION  
This pressure washer is provided with a ground fault circuit interrupter (GFCI) built into the plug of the power supply cord.  
This device provides additional protection from the risk of electric shock. Should replacement of the plug or cord become  
necessary, use only identical replacement parts that include GFCI protection.  
2. For a product rated more than 125 volts:  
GROUND FAULT CIRCUIT INTERRUPTER PROTECTION  
To comply with the National Electric Code (NFPA 70) and to provide additional protection from the risk of electric shock,  
this pressure washer should only be connected to a receptacle that is protected by a ground fault circuit interrupter  
(GFCI).  
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 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.  
SAVE THESE INSTRUCTIONS  
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Specifications  
Item Number  
157305  
1700 psi  
157306  
157307  
2000 psi  
157308  
2750 psi  
Pressure Rating  
Flow Output  
Pump Type  
2700 psi  
1.5 gpm  
Ceramic Triplex  
Plunger  
2.5 gpm  
Ceramic Triplex  
Plunger  
1.5 gpm  
Ceramic Triplex  
Plunger  
2.5 gpm  
Ceramic Triplex  
Plunger  
Water Supply  
Standard tap water  
@ 20-100psi  
1.5 hp  
Standard tap water  
@ 20-100psi  
5 hp  
Standard tap water  
@ 20-100psi  
2.0 hp  
Standard tap water @  
20-100psi  
5 hp  
Motor Horsepower  
Maximum  
Temperature  
250°F  
250°F  
250°F  
250°F  
Approved Fuels  
#1 or 2 Diesel,  
Kerosene, Fuel Oil  
8.25 gal.  
#1 or 2 Diesel,  
Kerosene, Fuel Oil  
8.25 gal.  
#1 or 2 Diesel,  
Kerosene, Fuel Oil  
8.25 gal.  
#1 or 2 Diesel,  
Kerosene, Fuel Oil  
8.25 gal.  
Fuel Capacity  
Discharge Hose  
Power  
3/8” x 50’  
3/8” x 50’  
3/8” x 50’  
3/8” x 50’  
Requirements  
Dedicated NEMA  
Receptacles  
Volts  
5-20R  
6-30R  
5-20R  
6-30R  
115V  
20A  
230V  
30A  
115V  
20A  
230V  
30A  
Amps  
Hertz  
Phase  
60Hz  
single  
60Hz  
single  
60Hz  
single  
60Hz  
single  
Dimensions  
Length  
Width  
38”  
26”  
38”  
26”  
38”  
26”  
38”  
26”  
Height  
43”  
43”  
43”  
43”  
Ship Weight  
385 lb.  
415 lb.  
385 lb.  
415 lb.  
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Machine Component Identification  
157305, 157306, 157307, 157308  
Ref # Description  
Ref # Description  
Ref # Description  
1
2
3
4
5
6
7
8
9
Exhaust Vent  
High Pressure Water Outlet  
Motor  
Burner  
Fuel Fill Cap  
Fuel Tank  
Control Box  
Elbow  
Swivel Fitting  
10  
11  
12  
13  
14  
15  
16  
17  
18  
Flow Switch  
Tee  
Safety Relief Valve  
Pump  
Gun Hooks  
Power Switch  
Thermostat  
Service Panel  
Nozzles  
19  
20  
21  
22  
23  
24  
25  
26  
Fuel Filter  
Quick Connector  
Spray Gun  
Grip  
Lance Wand  
Power Cord Hangers  
High Pressure Hose Hanger  
Garden Hose Water Inlet  
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Installation Instructions  
I.) Unpack  
Separate and identify all components. Use the assembly instructions in this manual for assembly.  
Spray Gun & Grip  
Qty-1  
High Pressure Hose  
Qty-1  
Fastener Bag  
Qty-1  
Wheel Retainer  
Qty-2  
Wheel  
Qty-2  
Pressure Washer  
Qty-1  
Nozzle  
Qty-6  
6
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Wheel Retainer  
II.) Assembly Instructions  
Axle  
A. 1. Carefully raise the pressure washer off the floor by  
using blocks or ramps. Make sure the pressure  
washer is secure before proceeding.  
2. Install the two wheels as shown with grease zerk  
away from frame.  
3. Slide the two wheel retainers onto the end of the  
axle. Tighten the set-screw with a hex wrench.  
Description  
Wheel  
Wheel Retainer  
Qty.  
2
2
Wheel  
Grease Zerk  
B. 1. Install the pressure hose onto the pressure washer  
as shown.  
2. Connect the other end of the pressure hose to the  
spray gun as shown.  
3. Make sure all plumbing connections are tight.  
Description  
Spray Gun/ Lance  
Spray Hose  
Qty.  
1
1
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III.) Pump Preparation  
Quantities Of Fluid  
*Comet Pumps Only  
Pump  
Type of  
Fluid  
QTY  
A.) Replace shipping oil plug with vented plug.  
Comet GXD 1617-E UTTO*  
5.0oz (0.15L)  
5.0oz (0.15L)  
8.5oz (0.25L)  
8.5oz (0.25L)  
Comet GXD 2527G  
Cat 2DX  
UTTO*  
SAE 30**  
SAE 30**  
Cat 3DX  
*Universal Tractor Transmission Oil or Mobil 1 15W50  
**SAE Non-Detergent (order Cat Pump Oil Item# 22158)  
**Cat Pumps Only  
A.)Remove shipping tape from oil fill cap  
B.)Make sure the oil is 1/2 way up oil sight glass.  
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V.) Getting Started  
IMPORTANT: Proper initial installation of equipment  
will assure more satisfactory performance, longer  
service life, and lower maintenance cost.  
VI.) Oil Burner  
Burner Air Adjustment: The oil burner is preset and  
performance tested at the factory (elevation 1100 feet).  
A one-time initial correction of the burner for your  
location will pay off in economy, performance, and  
extended service life.  
Make sure the pressure washer is on a level surface and  
in a protected area where it is not readily influenced by  
outside forces such as strong winds, freezing  
temperatures, rain, etc. Locate the pressure washer for  
easy access for filling fluids, adjustments, and  
maintenance.  
It is recommended that a partition be made between the  
wash area and the pressure washer to prevent direct  
nozzle spray from coming in contact with the pressure  
washer. Moisture reaching the equipment will reduce  
the pressure washer’s service life.  
Air Band  
White  
Arrow  
Locking  
Burner  
Partition  
Screw  
1.) Turn the pump and heat switches on (Refer to  
Operation” for details). Have someone operate the  
spray gun so the burner fires.  
2.) Loosen the locking screw and close the air band  
until black smoke appears from the burner exhaust  
vent. Note the position of the white arrow on the air  
band.  
3.) Slowly open the air band until white smoke just  
starts to appear.  
4.) Turn the air band half way back to the black smoke  
V.) Venting  
DANGER: Do not run machine indoors or in an  
enclosed area without adequate ventilation, or in  
areas where flammable vapors, (gasoline, solvents,  
etc.) may be present. Do not vent exhaust gases into  
a wall, a ceiling, or a concealed space.  
position previously noted.  
screw.  
Tighten the locking  
5.) Fine tune the burner air by loosening the shutter lock  
screw and turning the shutter until the exhaust is  
CAUTION: All venting must be in accordance with  
applicable federal and state laws, and local  
ordinances. Consult local heating contractors.  
Shutter  
Poor draft will cause the pressure washer to soot and  
not operate properly. When selecting the location for  
installation, beware of poorly ventilated locations or  
areas where exhaust fans may cause an insufficient  
supply of oxygen. Proper combustion can only be  
obtained when there is a sufficient supply of oxygen  
available for the amount of fuel being burned. If it is  
necessary to install a unit in a poorly ventilated area,  
outside fresh air may have to be piped to the burner and  
a fan installed to bring sufficient air into the unit  
Shutter Lock  
Screw  
cleanest. Tighten the shutter lock screw.  
CAUTION: If white smoke appears from the burner  
exhaust vent during start-up or operation,  
discontinue use and readjust air bands.  
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Operating Instructions  
Follow these instructions every time you use the pressure washer.  
I.) Pre-Operation  
III.) Before Starting  
; A.) Position the machine for easy access to all  
controls.  
WARNING: Make sure all switches and controls are  
in the OFF position prior to plugging in the cord.  
DO NOT stand in water while plugging or unplugging  
electrical cord.  
; B.) Position the machine on a solid surface, with  
less than a three degree slope, and so it is  
protected from external damage.  
; C.) Position the machine so that ambient lighting is  
sufficient for the surface you are cleaning to be  
seen with ease. Use artificial light if needed.  
; D.) Check hoses, fittings, wand, trigger gun and fuel  
connections for signs of wear, cracks and  
looseness, and replace as required.  
; E.) Check and clean the nozzle orifice.  
; F.) Check and clean the water inlet screen and  
filter.  
WARNING: Use  
protected by  
extension cord of proper voltage and amperage at  
all times.  
a
UL recognized receptacle  
a
ground fault interrupter and  
1. Connect electrical cord to specified NEMA receptacle.  
See page 4.  
WARNING: Check hoses, fittings, wand, trigger gun  
and fuel connections daily for signs of wear, cracks  
and looseness. Replace as required.  
; G.) Read entire manual, especially the important  
safety instructions listed on page 2.  
; H.) Check and maintain proper oil level in the pump.  
2. Connect water supply hose to the garden hose  
connector located on the pump.  
3. Fill the burner fuel tank. We recommend kerosene  
because it burns cleanest. #1 grade home heating  
oil, #1 or #2 diesel can also be used. DO NOT USE  
GASOLINE OR CRANKCASE OIL.  
II.) Check Your Water Supply  
; A.) Make sure the water supply is clean. Debris can  
cause excess pump wear and reduce  
performance.  
4. If detergents will be used, only use detergents  
intended for pressure washers. Follow instructions  
on the detergent container.  
; B.) An insufficient water supply will damage your  
pump. Make sure the water supply is steady  
and is 20% over the rated flow of your pump.  
Use a stopwatch to time how long it takes to fill a  
5 gallon bucket with your garden hose.  
Example: If the rated flow is = 3 gpm  
Then required flow = 3 x 1.20 = 3.6 gpm  
5 gallons / 3.6 gpm = 1.39 minutes  
IV.) To Start  
DANGER: Do not point the spray wand at yourself or  
at any person. Bodily injury may result from water  
under high pressure.  
1.39 min x 60 sec/min = 83 seconds  
Therefore, you must be able to fill a  
WARNING: Wear eye, ear, hand, foot and skin  
protection at all times while operating this pressure  
washer.  
IMPORTANT: The water must be turned on before  
starting. Running the pump dry will cause damage  
and void warranty.  
5 gallon bucket in 83 seconds or faster.  
; C.) The water supply garden hose must have an  
inside diameter of at least 5/8”. If the hose is  
more than 100 ft. long, the diameter must be at  
least 3/4”.  
; D.) Never use a reservoir tank as a water source.  
1. Turn water supply ON.  
This pressure washer is designed for  
a
2. Squeeze the trigger to allow air to purge from the  
system. (This step goes faster with the pressure nozzle  
removed)  
pressurized water source such as a city water  
faucet. Sucking water out of a tank may cause  
pump cavitation and damage to your pump.  
However, the inlet pressure of the pump must  
not exceed 115 psi (8 bar).  
; E.) Always use a flexible rubber hose for your water  
supply. Do not use rigid piping.  
; F.) Do not pump flammable liquids or liquids  
containing incompatible chemicals or solvents.  
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V.) Attach Nozzle  
VII.) For Hot Water  
1. If HOT water is desired, make sure there is fuel in  
the fuel tank, turn the heat switch ON, and adjust the  
thermostat to the desired temperature. The burner  
will fire when the trigger is squeezed. You may need  
to initially adjust your burner for peak performance.  
See the “Oil Burner” section under INSTALLATION.  
When the trigger is released or the temperature  
setting is reached, the burner will automatically turn  
off.  
Nozzle  
IMPORTANT: Do not run the machine in hot mode  
without any fuel in the fuel tank. The fuel pump will  
be damaged if it is run dry.  
To Clean  
Color of Nozzle: Spray Angle  
Used For:  
Highest Impact  
Tough Stains/  
Stripping  
General  
Light Cleaning  
Steaming  
WARNING: Wear eye, ear, hand, foot and skin  
protection at all times while operating this pressure  
washer.  
DANGER: Do not point the spray wand at yourself or  
at any person. Bodily injury may result from water  
under high pressure.  
CAUTION: Be careful on painted or delicate  
surfaces. The pressure may damage the surface if  
the nozzle is too close.  
Red  
0
Yellow  
15  
Green  
White  
Yellow  
Black  
25  
40  
15  
65  
Chemical  
IMPORTANT: Your spray gun is equipped with a  
built-in trigger safety latch to guard against  
accidental trigger actuation and potentially  
dangerous high pressure spray. Rotate the safety  
latch to the locked position when not spraying.  
NOTE: Your pressure washer is equipped with a low  
pressure chemical injector. You do not need to use  
chemicals for every job, however, the proper  
chemical used for the proper application can speed  
up cleaning jobs tremendously.  
Your pressure washer is equipped with six nozzles. To  
install a nozzle simply pull back the collar towards the  
lance and push the nozzle into the coupler. Once the  
connection is made, pull on the nozzle to assure a tight  
connection.  
Lance  
Nozzle  
Coupler  
Collar  
WARNING: Only use North Star pressure washer  
chemicals or chemicals specifically formulated for  
pressure  
washers.  
Follow  
the  
chemical  
manufacturer’s recommendations. Understand all  
safety precautions and first aid for all chemicals.  
CORRECT  
INCORRECT  
1. Press the braided chemical hose over the chemical  
injector on the pump and submerge the suction  
strainer connected to the braided chemical hose into  
the chemical solution.  
WARNING: Make sure the nozzle is correctly  
inserted. The nozzle may become a projectile if not  
inserted correctly. Do not attempt to use different  
types of nozzles that may not fit the coupler.  
Chemical  
Injector  
VI.) Turn the pump switch ON.  
1. Make sure the hose is not kinked. A kinked hose  
will provide insufficient water supply to the pump and  
will reduce its life. Make sure the hose remains  
unkinked after moving the pressure washer.  
Braided Hose  
and Strainer  
Diluted  
Chemical  
11  
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Unloader  
Chemical  
Injector  
Braided Hose  
and Strainer  
Diluted  
Chemical  
Unloader  
2. The black, low pressure chemical nozzle must be  
used to spray chemicals.  
3. Squeeze the spray gun trigger. The chemical injector  
will draw the chemical into the water stream.  
4. Spray detergent onto the surface and allow it to soak.  
Chemicals need time to work properly. Follow the  
chemical manufacturer’s recommendations for the  
recommended time.  
5. Change back to high pressure to rinse by inserting  
one of the high pressure nozzles.  
6. Hold the lance with two hands in a sturdy stance  
position.  
7. Point lance at dirty surface and squeeze trigger.  
8. Wash from the bottom to the top, using side to side  
motions. This washes away heavy dirt and allows the  
detergent to soak as you work toward the top.  
9. Use the width of the spray pattern to wash in a wide  
path. Overlap spray paths for complete coverage.  
10.The nozzle should be 12” to 24” from the work, closer  
for tough areas.  
WARNING:  
Do not alter the unloader valve’s  
maximum pressure. Excess pressures could cause  
serious injury and/or pump damage. Any alteration  
other than turning the adjustment knob will void  
your warranty.  
Caution: Be careful on painted or delicate surfaces,  
the pressure may damage the surface if the nozzle is  
too close.  
For Steam (Optional)  
1. Set the thermostat to 250°F.  
2. Turn the Heat switch ON.  
3. Insert the steam nozzle into the nozzle holder.  
11. Small parts should be washed in a basket so the  
pressure does not push them away. Larger, light  
weight parts should be clamped down.  
12. The pressure washer is set to the maximum rated  
pressure when it leaves the factory. To adjust the  
pressure, turn the unloader knob counter-clockwise.  
To Stop  
1. If detergents were used, draw clear water through the  
detergent inlet line to purge detergent. Failure to do  
so may clog the chemical injector.  
2. If the burner was used, turn off the “Heat” switch and  
pump cold water through the coil for 3 minutes.  
Insufficient cool down period of high pressure hose  
will cause excessive wear and eventual rupturing of  
hose.  
3. Turn the pump switch OFF.  
4. Turn OFF the water supply.  
5. Squeeze the trigger to relieve the system pressure.  
12  
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Safety Features  
I.) Safety Relief  
The safety relief valve is a backup safety feature. If the  
unloader malfunctions, the safety relief valve will open  
II.) High Temperature Limit  
Safety  
Relief  
High Temp.  
Limit  
00789  
00790  
and relieve system pressure.  
WARNING: If the safety relief valve ever discharges  
water, turn the unit off and do not use the machine.  
See a dealer or call Customer Service at  
1-800-270-0810.  
Maintenance Instructions  
WARNING: Unauthorized machine modification or use of non-approved replacement parts may cause personal  
injury and/or property damage and will void the manufacturer warranty.  
All mechanical equipment, no matter how well designed, will need repairs. A North Star pressure washer is no exception.  
At times, a North Star pressure washer may be inoperable because repairs are required. North Star Customer Service  
will assist in these repairs as needed, but if an inoperable pressure washer creates a major expense to your business  
then we strongly recommend the following:  
1. Have someone on staff who is trained in the operation of the pressure washer and is capable of making minor repairs  
and performing all preventative maintenance procedures as outlined in the provided manuals.  
2. Keep a stock of recommended service parts for maintenance and minor repairs.  
Maintenance Mode  
Before performing any maintenance on the pressure  
washer, it must be placed in maintenance mode.  
A.) Turn off water supply  
B.) Bleed water from system  
C.) Turn off and unplug power cord  
Maintenance Schedule  
What to Check  
Fuel Filter  
Inlet Filter  
Tires  
When To Check  
500 hrs  
What to Do  
Change  
Each Use  
Each Use  
Each Use  
Each Use  
Clean  
Check Pressure  
Check for Wear  
Check for Loose  
Bolts  
Hoses  
Bolts  
13  
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Cleaning The Inlet Filter  
WARNING: Check whether dangerous chemicals have  
been used, and take precautions when handling filters.  
Checking the Hoses  
WARNING: Do not use a finger or skin to check for  
leaks. Escaping fluid under pressure has sufficient  
force to penetrate the skin, causing serious injury. Do  
not operate the pressure washer if the hose is  
cracked, worn, or leaking.  
A.) Check all hoses for leaks  
B.) Check all hoses of worn areas  
Screen  
Good  
Bad  
Water  
FIG02300  
Bad  
Wire Mesh  
A.) Unscrew clear tube by hand.  
B.) Remove Inlet filter  
C.) Run water though to clean filter  
Changing The Pump Oil  
*Change oil after first 50 hours, then every 3 months or  
500 hours  
1.) Remove oil drain plug on Cat pumps.  
2.) Drain pump oil.  
Checking the Tire Air Pressure  
A.) Remove air fill cap  
B.) Fill tire to 20psi (1.4bar)  
C.) Replace air fill cap  
3.) Replace oil drain plug.  
4.) Fill pump oil according to table below.  
5.) Use dip stick to fill to proper level or sight glass on Cat  
pumps. On Comet pumps, fill with the correct measured  
amount of UTTO.  
Quantities Of Fluid  
Pump  
Comet  
CAT  
Type of Fluid  
UTTO*  
SAE 30**  
QTY  
5.0 oz (0.15L)  
8.5 oz (0.25L)  
Air Fill Stem  
*Universal Tractor Transmission Oil of Mobil 1 15W50  
**Non-Detergent Oil (order pump oil Item #22158)  
Air Fill Cap  
Burner Fuel Filter  
Comet  
Pump  
Cat  
Pump  
Drain water which has accumulated in the fuel filter  
bowl and replace the filter as needed.  
Filter  
Oil  
Fill/Drain  
Oil Fill  
Water Drain  
Oil Drain Plug  
(Underneath)  
14  
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Coil Descaling  
Coil Desooting  
In hard water areas, scale build-up within the  
heating coil will occur. Scale deposits will decrease  
the water temperature rise and may eventually clog  
the heating coil.  
1. Mix scale remover in a 5 gallon bucket and  
elevate the bucket so it is higher than the pump.  
2. Attach the high pressure hose to the high  
pressure water outlet on the machine. Do not  
hook up the spray gun.  
Poor grades of fuel oil or inadequate combustion  
air will cause heavy soot build-up on the outside  
surface of the heating coil. These deposits will  
insulate the coil. This will restrict the air flow  
through the coil, further aggravating the soot build-  
up.  
Most coils will never require desooting. However,  
to desoot a coil...  
1. Wear protective clothing, goggles, and gloves.  
2. Remove the fittings from the inlet and outlet of  
the coil.  
3. Place the other end of the high pressure hose in  
the 5 gallon bucket.  
4. Attach a short length of hose to the garden hose  
inlet on the pump.  
5. Prime the pump by filling the hose with water,  
then place the end of the hose in the bucket.  
3. Remove the lid from the heating chamber and  
hoist the coil out. Be careful, the coil is very  
heavy.  
Important: Be careful not to damage the threads  
on the coil inlet and outlet. If the threads get  
damaged, it will be hard to reconnect and seal  
the fittings on the coil inlet and outlet.  
Lid  
Insulation Cap  
Heating Coil  
Heating Chamber  
00791  
Clean Inlet Strainer  
When Finished  
6. Run the pressure washer in cold mode for 1 to 3  
hours recirculating the cleaning solution.  
Warning: Do not run the burner.  
7. Dispose of the cleaning solution where it is not  
harmful to animals or the environment.  
8. Flush with fresh water and clean the inlet strainer  
when finished.  
Short High  
00792  
Pressure Hose  
4. Clean the coil.  
5. Reassemble the coil to the machine. Make sure  
the white insulation remains in place.  
6. Make sure all fittings are tight before using the  
machine. Use thread sealant on all threads.  
15  
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Electrodes  
4. Clean off carbon deposits, which may have  
accumulated on the tips of the electrodes.  
5. Reset the spacing as shown below.  
On a yearly basis the electrodes should be  
inspected and any necessary adjustments made.  
1. Tip the machine back until it rests on the frame.  
Electrodes  
4 Nuts  
1/16”  
00793  
1/8”  
2. Remove the 4 nuts that attach the burner to the  
heating chamber.  
You do not have to  
disconnect the fuel lines or the electric cords.  
3. Let the burner fall away from the heat exchanger.  
7/16”  
00794  
16  
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Moving and Handling Instructions  
Maneuvering Your Pressure Washer  
Lifting Your Pressure Washer  
1.) Pull the handle back with both hands.  
2.) Rotate the handle downward to a comfortable height.  
3.) Push the pressure washer forward as you walk.  
1.) To reduce risk of injury, it is recommended to use a  
hoist to lift this pressure washer.  
2.) Lift from lifting point (see picture_.  
Handle  
Lift Here  
Long Term Storage  
During cold weather, store the pressure washer indoors and move it outdoors before starting.  
Follow these instructions to prevent the pump from freezing during storage.  
Winter Storage:  
Items needed: 12” piece of garden hose or equivalent,  
funnel and RV antifreeze (approximately 2 gallons).  
1.) Attach the garden hose with funnel to the pump inlet  
(see illustration).  
2.) Pour RV antifreeze into the funnel.  
3.) Turn the unit on and make sure the burner is off.  
4.) Let the pump run no more than 15 seconds at a time  
until antifreeze comes out the high pressure outlet.  
5.) It will take about 1.5 gallons of antifreeze to fill the  
pump and heat exchanger coil.  
RV Antifreeze  
6.) Drain all water from the high pressure hose. Depress  
trigger on gun and drain all water out of gun/lance.  
Funnel  
Hose  
Water Inlet  
17  
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Troubleshooting Guide  
Pressure Washer Will Not Run - No Power  
Causes  
Machine not plugged in  
Solutions  
Plug machine in  
GFCI tripped  
Make sure machine is dry  
Press RESET on the GFCI  
Turn Pump switch ON  
Machine turned OFF  
Line circuit breaker tripped  
Check for tripped circuit breaker in building  
Circuit Breaker Trips During Operation  
Causes  
Voltage too low  
Solutions  
Check the voltage  
Circuit Breaker Overloaded  
Make sure to use NEMA specified receptacle  
Make sure there is no other equipment using the same circuit  
- see Specifications  
Pressure set too high  
Check/adjust pressure setting on unloader  
Pressure Washer Runs But No Pressure  
Causes  
Partially clogged or damaged nozzle  
Low water flow  
Solutions  
Clean or replace nozzle  
Make sure the water supply is more than the required flow  
Pressure Washer Surges Or Cycles While In Bypass  
Causes  
Solutions  
Leak between pump and gun  
Check all connections between pump and gun for leaks  
Tighten loose components and replace damaged components  
Replace spray gun  
Gun leaking internally  
Smoke From Heat Exchanger  
Causes  
Solutions  
Air band not adjusted properly due to Adjust the air band until the burner burns cleanly  
different elevation  
See Oil Burner under Installation Instructions  
Poor quality fuel  
Use Kerosene for the cleanest burn  
Water Not Heating Sufficiently  
Causes  
Scale build-up in coil  
Coil is full of soot  
Solutions  
See Coil Descaling under Maintenance Instructions  
See Coil Desooting under Maintenance Instructions  
Safety Relief Valve Sprays Water  
Solutions  
Causes  
Unloader/Burner Control Problem  
Call customer service  
Poor Or No Detergent Supply  
Causes  
Inadequate detergent supply  
Solutions  
Refill detergent container  
Make sure the chemical strainer is fully submerged  
High pressure hose too long  
Use less hose  
Move machine closer to the work  
Chemical strainer or injector clogged  
Clean the strainer and injector. Always start with a clean detergent  
container. Run clean water through the injector after each use.  
18  
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M157305G - 157305,157306,157307, 157308  
Parts Breakdown  
19  
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M157305G - 157305,157306,157307, 157308  
Parts List  
ITEM PART # DESCRIPTION  
QTY  
1
1
1
1
1
1
1
1
1
49”  
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
4
4
25”  
10”  
25”  
1
MODEL  
ALL  
ALL  
ALL  
ALL  
ALL  
ALL  
ALL  
ALL  
ALL  
ALL  
ALL  
ALL  
ALL  
ALL  
ALL  
ITEM PART # DESCRIPTION  
35 38379 Swivel Fitting, 6MP-8FPS  
QTY  
1
1
2
3
1
1
1
2
MODEL  
ALL  
ALL  
ALL  
ALL  
ALL  
ALL  
ALL  
ALL  
ALL  
ALL  
1
2
3
6
7
8
9
38525 50’ PW Hose Assy  
777914 Quick Couple, 3/8” FPT  
777915 Quick Couple Nipple, 3/8” FPT  
777904 Quick Coupler, 1/4” FPT  
779166 Lance Assembly  
313107 Quick Couple, 3/8” FPT  
779168 Gun Trigger Assembly  
36  
5027 Elbow, 8MP-FP  
37 38509 Threaded Gun Hook  
38 38510 Threaded Hose Hook  
39 777111 Grommet  
40 778092 Hot Water Frame  
41 32308 Fuel Filter, Water Separator  
42 30388 Pneumatic Wheel/Tire  
43 305408 Axle  
10 22622 Gun Grip  
11 38398 Insulation Cap Assembly  
12 36302 Fiberglass Rope  
13 35331 Heat Exchanger Lid  
14 305410 ~Caution Hot~ Decal  
15 777913 Quick Couple Nipple, 3/8”  
16 30048 Reducer, 8MP – 6FP  
17 305208 Tee, 8FP  
1
2
44 305200 Wheel Retainer  
777165 Braided Chemical Hose, 1/4”  
777165 Braided Chemical Hose, 1/4”  
36” 157305, 157306  
36” 157307, 157308  
45  
46  
2212 Chemical Strainer  
1
1
1
1
1
1
1
1
1
1
1
1
6
1
1
1
1
1
4
1
1
1
1
1
ALL  
157305, 157306  
157305  
47 778236 Thread-on Coupler, 22mm  
778153 Comet GXD 1617-E  
18 778179 Kink Guard  
ALL  
ALL  
ALL  
778162 Comet GXD 2527G-E  
778154 Cat 2DX  
157306  
157307  
157308  
157305  
48  
19 779228 Coil Assembly  
20 33387 Insulation Can  
21 779232 Fire Chamber  
38518 Cat 3DX  
777616 Leeson, 1.5 HP Motor  
ALL  
49  
37530 Vented Wrap  
36180 Vented Wrap, Stainless  
157305, 157306  
157307, 157308  
ALL  
778670 Leeson 5 HP Motor  
777617 Leeson, 2 HP Motor  
157306, 157308  
157307  
22  
23 38120 Insulation Gasket  
24 778111 Heat Exch. Mount Weld.  
50 779303 Control Box Cover  
51 31985 Grommet  
52 779301 Control Panel Weldment  
53 35198 Grommet, 7/16” ID  
ALL  
ALL  
ALL  
ALL  
ALL  
777166 Burner, 120V  
778189 Burner, 230V  
157305, 157307  
157306, 157308  
ALL  
157306, 157308  
ALL  
25  
26 305267 Strain Relief Nut  
27 22502 Strain Relief  
778197 Nozzle 5-pack, #2.0  
38531 Nozzle 5-pack, #3.0  
157305, 157307  
157306, 157308  
ALL  
157305, 157307  
157306, 157308  
ALL  
54  
28 777340 Hose Barb, 1/4” MPT x 1/4”  
29 777834 Hose Clamp, 1/4”  
30A 777345 Fuel Line, 1/4” Burner-Tank  
30B 777345 Fuel Line, 1/4” Filter -Burner  
30C 777345 Fuel Line, 1/4” Tank to Filter  
55 778198 Steam Nozzle, 15 Deg  
ALL  
ALL  
ALL  
ALL  
778151 DP Contactor, 120V/25A  
778152 DP Contactor, 230V/30A  
56  
57 30754 Leather Washer  
58 3054007 Fuel Tank  
59 305206 Printed Fuel Cap  
60 777410 Elbow, 3/8” NPT  
61 305266 Strain Relief, 1/2” NPT  
778194 Motor Power Cord 14/3  
ALL  
ALL  
31  
35104 Pop Off Valve, 3/8”  
157305, 157307  
157306, 157308  
22392 Pop Off Valve, 3/8”  
1
157305,157306  
157306,157308  
157305  
157306, 157307,  
157308  
778195 3000PSI RXS Hose, 3/8x18”  
778193 3000PSI RXS Hose, 3/8x26”  
777347 Tee, 6MP-6FP-6FP  
18” 157305, 157306  
26” 157307, 157308  
1
32  
33  
62  
ALL  
778191 Motor Power Cord 12/3  
1
34 37537 Flow Switch  
1
ALL  
778141 GFCI Cord, 120V/20A, 36 ft  
63  
1
1
157305, 157307  
157306, 157308  
778142 GFCI Cord, 240V/30A, 36 ft  
20  
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ITEM  
PART #  
778153  
778162  
778154  
38518  
DESCRIPTION  
Comet GXD 1617-E  
Comet GXD 2527-E  
Cat 2DX  
QTY  
1
1
1
1
MODEL  
157305  
157306  
157307  
157308  
1
Cat 3DX  
2
3
4
5
35918  
Thermal Protector, 1/4”  
1/4” MPT x 1/4” Hose Barb  
22mm Thread-On Coupler  
3/8” Street Elbow  
3/8” NPT Easy Start Valve  
3/8 Plug  
3/8” Tee  
Inlet Filter  
Braided Chemical Hose, ¼”  
1
1
1
1
1
1
1
1
157307, 157308  
157308  
157305  
157305, 157306  
157308  
777340  
778236  
777410  
38584  
777837  
777411  
38596  
6
157307  
7
8
9
157307, 157308  
157307, 157308  
157308  
777165  
12”  
21  
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22  
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23  
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24  
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