BE Power Equipment HW152EMD User manual

User Manual
ELECTRIC
HOT WATER
HW152EMD
HW204EMD
PRESSURE WASHER

2 3
Safety
6 Safety Rules
7 Safety Warnings
Features
13 Features
Installation & Preparation
14 Attire
14 Set-Up
15 Power Cord Connection
17 Burner Fuel Tank
17 Nozzle Review
18 Nozzle Connection
19 Water Supply
20 Unloader
20 Thermal Relief Valve
20 Pre-Start Inspection Procedures
Operation
21 Flushing the System
21 Start-Up/Cold Water Operation
23 Hot Water Operation
23 Steam Operation
24 Cleaning with Detergents
25 Shutdown
Maintenance
26 Specific Maintenance
27 Winterizing
29 Maintenance Chart
Troubleshooting
30 Troubleshooting Chart
Parts List
34 Specifications
36 Flow Chart
37 Operation Theory
38 Frame Assembly
40 Motor/Pump Assembly
42 Pump Assembly
45 Unloader
47 Pressure Switch (22-0171)
48 Coil Drain Plug (850-0218)
49 Heat Exchanger/Blower Motor
51 Boiler Assembly
53 Gun/Wand/Hose Assembly
54 Fuel Tank
55 Fuel Pump
55 Fuel Solenoid
56 Electric Box Assembly for HW1115EMD and
HW152EMD
58 Electric Box Assembly for HW204EMD
60 Wire Schematic for HW1115EMD and
HW152EMD
61 Wire Diagram for HW1115EMD and
HW152EMD
62 Wire Schematic for HW204EMD
63 Wire Diagram for HW204EMD
64 Statement of Warranty
65 Warranty Exclusions
TABLE OF CONTENTS TABLE OF CONTENTS

4 5
Using the Operator’s manual
The operating manual is an important part of your Pressure Washer. It
should be read thoroughly before initial use, and referred to often to make
sure adequate safety and service concerns are being addressed.
Reading the owner’s manual thoroughly will help avoid any personal injury
or damage to your pump. By knowing how best to operate this machine
you will be better positioned to show others who may also operate the
unit.
You can refer back to the manual at any time to help troubleshoot any
specific operating functions, so store it with the machine at all times.
Attention: Read through the complete
manual prior to the initial use of your
Pressure Washer
Record Identification Numbers
Pressure Washer
If you need to contact an Authorized Dealer or Customer Service line (1-
866-850-6662) for information on servicing, always provide the
product model and identification numbers.
You will need to locate the model and serial number for the pump and
record the information in the places provided below.
Date of Purchase:
Dealer Name:
Dealer Phone:
Product Identification Numbers
Model Number:
Serial Number:
INTRODUCTION PRODUCT IDENTIFICATION

6 7
The safety alert symbol ( ) is used with a signal word (DANGER,
CAUTION, WARNING), a pictorial and/or a safety message to alert you
to hazards.
DANGER indicates a hazard which, if not avoided, will result in death
or serious injury.
WARNING indicates a hazard which, if not avoided, could result in
death or serious injury.
CAUTION indicates a hazard which, if not avoided, might result in
minor or moderate injury.
NOTICE indicates a situation that could result in equipment damage.
Follow safety messages to avoid or reduce the risk of injury or death.
Hazard Symbols and Meanings
Save these Instructions
SAFETY RULES
This is the safety alert symbol. It is used
to alert you to potential personal injury
hazards. Obey all safety messages that
follow this symbol to avoid possible injury
or death.
explosion fire
toxic fumes
hot surface
flying objects injection
moving parts
electric
shock
WARNING
Serious injury or death could occur if the pressure
washer is not properly grounded. Your pressure washer
is powered by electricity and may cause electric shock
or electrocution if not used properly.
Electrical shock may occur from electrical cord.
Electrical shock may occur if pressure washer is not
operated properly.
Serious injury or death may occur if electrical repairs are
attempted by unqualified persons.
• This product must be grounded. Make sure the pressure washer is
equipped with a GFCI built into the power supply cord. If this is not
available, the pressure washer must be plugged into a receptacle that
is protected by a GFCI. Disconnect when not in use.
• If your unit is equipped with a GFCI, DO NOT drop the GFCI as
damage could result. If the GFCI is accidentally dropped, be certain
to test the GFCI before using to ensure it is working properly. (Follow
instructions on GFCI for test procedures.) Always be certain the unit
is receiving proper voltage. Before plugging the unit into a compatible
power source, be certain the switch is in the “OFF” position.
Disconnect when not in use.
• Do not modify 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 of adapter.
• Check power cord for signs of crushing, cutting or heat damage. If
replacement of plug or cord is needed, use only identical replacement
parts.
• Do not use extension cords with this pressure washer.
• Keep all connections dry and off the ground. Do not allow electrical
cords to lay in water or in such a position where water could come in
contact with them. Do not touch plug with wet hands.
• Do not pull on the electrical cord to disconnect from the outlet.
• Do not direct spray on or into electrical installations of any kind! This
includes electrical outlets, light bulbs, fuse boxes, transformers, the
unit itself, etc.
• Do not allow metal components of the pressure washer to come in
contact with live electrical components.
• Never operate the pressure washer with safety guards/covers
removed or damaged.
SAFETY SAFETY

8 9
WARNING
Serious injury or death may occur from normal sparks in
the multiple ignition sources or burner exhaust.
Injury or death may occur as a result of improper fueling.
Serious injury or death may occur if system safety’s are
not properly maintained.
• Always operate pressure washer in a well ventilated area free of
flammable vapors, combustible dust, gases or other combustible
materials.
• Do not store the pressure washer near an open flame or any
equipment such as a stove, furnace, water heater, etc., which utilizes
a pilot light or sparking device.
• Do not use this pressure washer to spray flammable material!
• Do not smoke while filling burner fuel tank.
• Never fill the burner fuel tank while the pressure washer is running or
hot. Allow to cool two minutes before refueling.
• Always refuel slowly to avoid the possibility of spilled fuel which may
cause a risk of fire.
• Do not refuel indoors or in a poorly ventilated area.
Burner Fuel Tank:
• Use No. 1 or No. 2 fuel oil/diesel or kerosene. Do not use gasoline,
crankcase drainings or oil containing gasoline or solvents.
• Do not operate the unit if diesel fuel is spilled. Wipe the pressure
washer clean and move it away from the spill. Avoid creating any
ignition until the diesel fuel has evaporated.
• This pressure washer has a Safety Relief device which should never
be altered, modified, removed or made inoperative. If the device fails,
replace immediately with only genuine manufacturer replacement part.
• Any electrical wiring or repairs performed on this pressure washer
should be done by Authorized Service Personnel in accordance with
National and Local electrical codes.
• Before opening any electrical enclosure, always shut off the pressure
washer, relieve pressure and unplug the pressure washer from the
power source. Allow the pressure washer to cool down. Never
assume the pressure washer is safe to work on just because it is not
operating. It could restart at any time! Service in a clean, dry, flat area.
WARNING
Serious injury or death may occur from inhaling burner
exhaust or dangerous vapors.
• Never operate this pressure washer in an enclosed area. Always make
certain there is adequate ventilation (fresh outside air) for breathing
and combustion. This will prevent the buildup of dangerous carbon
monoxide gases. Beware of poorly ventilated areas, or areas with
exhaust fans which can cause poor air exchange.
• Follow all safety instructions provided with the materials you are
spraying. Use of a respirator may be required when working with
some materials. Do not use this pressure washer to dispense
hazardous detergents.
WARNING
Serious injury or death could occur from high pressure
spray penetrating the skin.
• Keep clear of nozzle and spray! Never put your hand, fingers or body
directly over the spray nozzle.
• Do not direct discharge stream at persons or self.
• This product is to be used only by trained operators.
• Always keep operating area clear of all persons.
• Close supervision is necessary when used near children. DO NOT
allow children to operate this unit!
• SEEK EMERGENCY MEDICAL CARE if the spray appears to have
penetrated the skin! DO NOT TREAT AS A SIMPLE CUT!!
• High pressure hoses and fuel lines should be inspected daily for signs
of wear. If evidence of failure exists, promptly replace all suspect
hoses and fuel lines to prevent the possibility of injury from the high
pressure spray. If a hose or fitting is leaking, NEVER PLACE YOUR
HAND DIRECTLY ON THE LEAK.
• NEVER operate the gun with the trigger wired in the open position.
To prevent accidental discharge, the trigger gun should be securely
locked when not in use.
• Before removing the spray nozzle or servicing the unit, ALWAYS shut
off the unit and trigger the gun to release trapped pressure. (Even af-
ter you shut off the unit, there is high pressure water left in the pump,
hose and gun until you release it by triggering the gun.)
SAFETY SAFETY

10 11
WARNING
Serious injury may occur from a pressure washer
malfunction or exploding accessories if incorrect
system components, attachments or accessories are
used.
Serious injury or death may occur if attempting to start
the pressure washer when the pumping system is
frozen.
• Never make adjustments to the factory set pressures.
• Never exceed manufacturers maximum allowable pressure rating of
attachments.
• Do not allow any hoses to make contact with heat exchanger to
prevent the possibility of bursting. Avoid dragging the hoses over
abrasive surfaces such as cement.
• Use only manufacturer recommended repair parts for your pressure
washer.
• In freezing temperatures, the unit must always be warm enough to
ensure there is no ice formation in the pump. Do not start the pressure
washer if it has been transported in an open or under heated vehicle
without first allowing the pump to thaw.
WARNING
Serious injury may occur to the operator from moving
parts on the pressure washer.
• Never make adjustments to the unit while it is connected to the power
source.
• Do not operate the unit without all protective covers in place.
• Follow the maintenance instructions specified in the manual.
WARNING
Serious injury may occur from touching the heat ex-
changer. This area can remain hot for some time after
the pressure washer is shutdown.
• Never allow any part of your body to contact the heat exchanger.
• Do not leave unit unattended after shutdown until it is completely
cooled down as described in the “SHUTDOWN” procedures listed on
page 25 of this manual.
WARNING
Serious injury or death may occur from detergents con-
tacting the skin.
Serious injury can occur from loose debris being pro-
pelled at a high speed from the spray gun.
Injury may occur if the operator loses his balance
caused by the thrust of water traveling through the
spray nozzle.
Injury may occur from the pressure washer.
• SEEK EMERGENCY MEDICAL CARE if you are using cleaning
agents and the spray appears to have penetrated the skin! DO NOT
TREAT AS A SIMPLE CUT! Be prepared to tell a physician exactly
what kind of detergents you were using by reading the Material Safety
Data Sheet (MSDS) provided with your detergent.
• Never use any solvents or highly corrosive detergents or acid type
cleaners with this pressure washer.
• Protective equipment such as rubber suits, gloves and respirators are
advisable, especially when using cleaning detergents.
• Keep all detergents out of the reach of children!
• ALWAYS wear protective goggles when operating the unit to shield
the eyes from flying debris and detergents.
• DO NOT direct spray toward fragile materials such as glass for shat-
tering could occur.
• If the pressure washer is equipped with an Auto start/stop feature,
the unit will shutdown until the gun is triggered. To prevent accidental
high pressure discharge, do not leave unit unattended while in this
mode.
• Stay alert-watch what you are doing. Do not operate the unit when
fatigued or under the influence of alcohol or drugs.
• NEVER squeeze the trigger unless securely braced.
• DO NOT overreach or stand on unstable support. Keep good footing
and balance at all times.
• Wet surfaces can be slippery, wear protective foot gear and keep
good footing and balance at all times.
• NEVER trigger the gun while on a ladder or roof.
• ALWAYS hold on firmly to the gun/lance assembly when starting and
operating the unit. Failure to do so can cause the lance to fall and
whip dangerously.
SAFETY SAFETY

12 13
WARNING
• Know how to stop the pressure washer and bleed pressures quickly.
Be thoroughly familiar with controls.
• DO NOT leave pressurized unit unattended. Shut off the pressure
washer and release trapped pressure before leaving.
• DO NOT operate the unit if you see any fuel, oil or water leaks from
the machine. DO NOT resume operation until the unit has been in-
spected and repaired by a qualified service person.
• Place unit in a clean, dry, flat area for servicing. Before servicing the
unit: turn the unit off, relieve the water pressure from the trigger gun,
and allow the unit to cool down. Service in clean, dry, flat area. If ap-
plicable, block wheels to prevent unit from moving.
• Do not move the unit by pulling on the hose.
1. TEFC Pump Motor
2. Spray Nozzle Holder
3. Burner Fuel Tank
4. High Pressure Pump w/Unloader
5. Flat Free Wheels
6. Switch-On/Off/Burner
7. Burner Air Regulation
8. Brake
9. High Pressure Hose
10. Trigger Safety Lock
11. Trigger Gun
12. Insulated Lance
13. Lance
14. Spray Nozzle
15. Wand Holder
Features
DRAWING/PART NO:
DRAWING SIZE: DRAWN BY:APP'D:DATE:SCALE:
HSE SMALL - FEATURES
NTS RSWB12/05/14
HSE SMALL - BE UNIT ASSEMBLY (DIRECT FEED)
Mi-T-M Corporation
DESCRIPTIONITEM
TEFC PUMP MOTOR1
SPRAY NOZZLE HOLDER
2
BURNER FUEL TANK
3
HIGH PRESSURE PUMP W/UNLOADER
4
FLAT FREE WHEELS
5
SWITCH-ON/OFF/BURNER
6
BURNER AIR REGULATION
7
BRAKE
8
HIGH PRESSURE HOSE
9
TRIGGER SAFETY LOCK10
TRIGGER GUN
11
INSULATED LANCE12
LANCE
13
SPRAY NOZZLE14
WAND HOLDER
15
M:\Drawings\PRIVATELABEL\BEPRESSURESUPPLY\HSESMALL\HSESMALL-FEATURES.iam
REC'D: DATE:
1
2
3
4
5
9
10
11
12 13 14
876
15
SAFETY FEATURES

14 15
ATTIRE
Proper attire is essential to your safety. It is advised to utilize whatever
means necessary to protect eyes, ears, and skin. Additional safety
attire (such as respiratory mask) may be required when using detergent
cleaning agents with this washer.
SET-UP
1. This unit should only be placed on a level surface to ensure proper
lubrication for the water pump while operating. NEVER spray water
directly on the unit.
2. Do not use unit in an area:
a. with insufficient ventilation.
b. where there is evidence of oil or fuel leaks.
c. where flammable gas vapors may be present.
3. Engage brake to prevent the unit from moving while operating.
4. Do not allow the unit to be exposed to rain, snow or freezing
temperatures. If any part of the unit becomes frozen, excessive
pressure may build up in the unit which could cause it to burst
resulting in possible serious injury to the operator or bystanders.
5. Pump oil level should be checked before each use. Make certain
the oil is on the “Full” mark on the dipstick or in the center of the oil
sight glass. If the level appears to be low, fill with SAE20 or 30 non-
detergent pump oil.
Installation & Preparation
DANGER
DO NOT PLACE UNIT IN AN AREA WHERE
FLAMMABLE GAS VAPORS MAY BE PRESENT.
A SPARK COULD CAUSE AN EXPLOSION OR FIRE!
DO NOT STORE/OPERATE UNIT IN FREEZING
ENVIRONMENTS!
WARNING
DO NOT OPERATE IN AN ENCLOSED AREA. USE
THIS PRODUCT ONLY IN WELL VENTILATED
AREAS!
THE EXHAUST CONTAINS CARBON MONOXIDE, A
POISONOUS, ODORLESS AND INVISIBLE GAS.
BREATHING THIS GAS CAN CAUSE SERIOUS
INJURY, ILLNESS & POSSIBLE DEATH.
POWER CORD CONNECTION
1. Make certain the motor switch is in the “OFF” position.
2. Ensure electrical supply is identical to the specifications listed on the
pressure washer data plate.
3. 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 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.
4. 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 of adaptor with this product.
5. GROUND FAULT CIRCUIT INTERRUPTER PROTECTION:
a. SINGLE PHASE: If this pressure washer is provided with a Ground
Fault Circuit Interrupter (GFCI) built into the plug or the power supply
cord, test the GFCI each time it is plugged into an outlet according to
instructions on the GFCI. DO NOT use the pressure washer if the test
fails! The GFCI 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.
b. SINGLE PHASE: If this pressure washer is not provided
with a GFCI, this pressure washer should only be connected
to a receptacle that is protected by a Ground Fault Circuit
Interrupter (GFCI) to comply with the National Electric Code
(NFPA 70) and to provide additional protection from the risk of
electric shock.
c. THREE PHASE: These pressure washers are not provided
with GFCI protection.
DANGER
THIS UNIT MUST BE CONNECTED TO A PROPERLY
GROUNDED OUTLET. DO NOT USE AN ADAPTER
OR REMOVE THE THIRD GROUNDING PRONG.
INSTALLATION & PREPARATION INSTALLATION & PREPARATION

16 17
WARNING
TO REDUCE THE RISK OF ELECTROCUTION, KEEP
ALL CONNECTIONS DRY AND OFF THE GROUND.
DO NOT TOUCH PLUG WITH WET HANDS.
6. EXTENSION CORDS:THE MANUFACTURER DOES NOT
RECOMMEND THE USE OF EXTENSION CORDS! If use of an
extension cord is unavoidable, it must be plugged into a GFCI found
in circuit boxes or protected receptacles. When using an extension
cord, consult a qualified electrician to determine the proper wire gauge
needed for the length of the extension cord.
SINGLE PHASE: 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.
THREE PHASE: Use only 4 wire extension cords that have 4-prong
grounding type plugs and 4-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 cord 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 connect and disconnect the extension cord from the
receptacle before connecting and disconnecting the product from the
extension cord.
7. Ensure the area between the pressure washer cord and outlet is kept
dry.
8. Insert the male plug into a grounded AC outlet. DO NOT use an
adapter OR remove the grounding plug!!
DANGER
DO NOT SMOKE WHILE FUELING!
DO NOT FILL THE FUEL TANK WHILE UNIT IS
RUNNING OR HOT. ALLOW UNIT TO COOL FOR
TWO MINUTES BEFORE RE-FUELING.
DO NOT FILL FUEL TANK TO POINT OF
OVERFLOWING. ALLOW APPROXIMATELY 1/4” OF
TANK SPACE FOR FUEL EXPANSION.
ALWAYS STORE FUEL AWAY FROM THE WASHER
WHILE THE UNIT IS RUNNING OR HOT.
BURNER FUEL TANK
1. Review “Risk of Explosion or Fire” pg. 8, before fueling.
2. Locate the Safety Decals on your unit and heed their warnings.
3. Fill the burner fuel tank with good quality, clean No. 1 or No. 2 fuel oil
diesel or kerosene. Do not use gasoline!
NOZZLE REVIEW
Various nozzles may be quick-connected into the end of the wand to
change the spray pattern or use the detergent feature. When using Quick
Connects (Q.C.), be certain the connection is securely locked. If not, the
high pressure water may shoot the nozzle from the wand, causing severe
injury or serious damage. To determine spray fan, refer to the actual num-
ber stamped on the nozzle. The first two digits indicate the spray fan in
degrees, i.e.; 00=0”, 15=15°, 40=40°.
1. The 0° nozzle (RED): This is a blasting nozzle. It delivers a very con-
centrated stream of water. Be cautious when using the straight narrow
stream. It is not recommended for use on painted or wood surfaces,
or items attached with adhesive backings. Uses: Removing weeds
from sidewalk cracks, stubborn stains from concrete, masonry, alumi-
num and steel, caked mud from equipment, and cleaning lawn mower
undersides.
2. The 15° nozzle (YELLOW): This is a chiseling nozzle. The spray should
be directed at a 45° angle to the surface and used like a scraper to
remove paint, grease and dirt. Uses: Surface preparation (removing
mildew stains and paint chips).
3. The 40° nozzle (WHITE): This is a wash nozzle. This wide spray pattern
disperses the water pressure over a large area and is recommended
for moderate washing. Uses: Washing aluminum siding, cleaning win-
dows, washing vehicles, spraying sidewalks, driveways, and patios.
INSTALLATION & PREPARATION INSTALLATION & PREPARATION

18 19
1. Be certain the trigger gun is locked in the “OFF” position.
2. The nozzle assembly should be disconnected from the gun/wand
assembly at this by retracting the locking ring on the quick-connect
fitting to remove the nozzle.
WARNING
NEVER LOOK DIRECTLY AT THE NOZZLE ORIFICE UNLESS IT
IS DISCONNECTED FROM THE GUN/WAND ASSEMBLY!
NOZZLE CONNECTION
CONNECTION OF Q.C. NOZZLES QUICK-CONNECT (Q.C.)
12
12 Operator's Manual
INSTALLATION & PREPARATION
WATER SUPPLY:
1. Select a water supply hose which is a quality grade of garden hose measuring
at least 3/4" ID and no longer than 50 feet.
2 Check the water inlet strainer to ensure it is clean and free of any obstructions.
As a strainer becomes obstructed, it restricts proper ow of water to the
pump. This can result in cavitations which will prematurely cause failure
of pump packings.
a. Using a screwdriver, remove the screen from the water inlet.
b. Clean or replace if necessary.
3. Connect the hoses.
a. Connect one end of the water supply hose to the water inlet of the unit.
b. Connect the other end of the hose to your pressurized water supply.
NOTE 1: Do not use a non-pressurized water supply (i.e. from a pond or
well) with this unit.
NOTE 2: When connecting the water inlet to the water supply mains, local
regulations of your water company must be observed. In some
areas, the unit must not be connected directly to the public drinking
water supply. This is to ensure there is no feedback of detergents
into the water supply. (Direct connection is permitted if a backow
preventer is installed. Check with local authorities for approval.)
NOTE 3: If there is a high mineral content in your water, it is highly
recommended that a water softener and an additional water strainer
be added to the water inlet to help prevent the possibility
of excessive scale buildup inside the heat exchanger coil. Clean
both strainers before starting your pressure washer.
NOZZLE REVIEW:
Various nozzles may be quick-connected into the end of the wand to change the
spray pattern or use the detergent feature. When using Quick Connects (Q.C.),
be certain the connection is securely locked. If not, the high pressure water
may shoot the nozzle from the wand, causing severe injury or serious damage.
To determine spray fan, refer to the actual number stamped on the nozzle. The
rst two digits indicate the spray fan in degrees, i.e.; 00=0”, 15=15°, 40=40°.
1. The 0° nozzle (RED): This is a blasting nozzle. It delivers a very concentrated
stream of water. Be cautious when using the straight narrow stream. It is
not recommended for use on painted or wood surfaces, or items attached
with adhesive backings. Uses: Removing weeds from sidewalk cracks,
stubborn stains from concrete, masonry, aluminum and steel, caked mud
from equipment, and cleaning lawn mower undersides.
2. The 15° nozzle (YELLOW): This is a chiseling nozzle. The spray should
be directed at a 45° angle to the surface and used like a scraper to remove
paint, grease and dirt. Uses: Surface preparation (removing mildew stains
and paint chips).
3. The 40° nozzle (WHITE):
This is a wash nozzle. This wide spray pattern disperses the water pressure
over a large area and is recommended for moderate washing. Uses: Washing
aluminum siding, cleaning windows, washing vehicles, spraying sidewalks,
driveways, and patios.
NOZZLE CONNECTION:
1. Be certain the trigger gun is locked in the “OFF” position. See WARNING, left.
2. The nozzle assembly should be disconnected from the gun/wand assembly
at this by retracting the locking ring on the quick-connect tting to remove
the nozzle.
WARNING
RISK OF INJECTION CAUSING
SEVERE INJURY!
NEVER LOOK DIRECTLY AT THE
NOZZLE ORIFICE UNLESS IT
IS DISCONNECTED FROM THE
GUN/WAND ASSEMBLY!
CONNECTION OF Q.C. NOZZLES
QUICK-CONNECT FITTING
WARNING
RISK OF SEVERE INJURY!
THE TRIGGER GUN SHOULD
ALWAYS BE LOCKED IN THE OFF
POSITION WHEN NOT IN USE!
QUICK-CONNECT (Q.C.)
0°
15°
40°
12
12 Operator's Manual
INSTALLATION & PREPARATION
WATER SUPPLY:
1. Select a water supply hose which is a quality grade of garden hose measuring
at least 3/4" ID and no longer than 50 feet.
2 Check the water inlet strainer to ensure it is clean and free of any obstructions.
As a strainer becomes obstructed, it restricts proper ow of water to the
pump. This can result in cavitations which will prematurely cause failure
of pump packings.
a. Using a screwdriver, remove the screen from the water inlet.
b. Clean or replace if necessary.
3. Connect the hoses.
a. Connect one end of the water supply hose to the water inlet of the unit.
b. Connect the other end of the hose to your pressurized water supply.
NOTE 1: Do not use a non-pressurized water supply (i.e. from a pond or
well) with this unit.
NOTE 2: When connecting the water inlet to the water supply mains, local
regulations of your water company must be observed. In some
areas, the unit must not be connected directly to the public drinking
water supply. This is to ensure there is no feedback of detergents
into the water supply. (Direct connection is permitted if a backow
preventer is installed. Check with local authorities for approval.)
NOTE 3: If there is a high mineral content in your water, it is highly
recommended that a water softener and an additional water strainer
be added to the water inlet to help prevent the possibility
of excessive scale buildup inside the heat exchanger coil. Clean
both strainers before starting your pressure washer.
NOZZLE REVIEW:
Various nozzles may be quick-connected into the end of the wand to change the
spray pattern or use the detergent feature. When using Quick Connects (Q.C.),
be certain the connection is securely locked. If not, the high pressure water
may shoot the nozzle from the wand, causing severe injury or serious damage.
To determine spray fan, refer to the actual number stamped on the nozzle. The
rst two digits indicate the spray fan in degrees, i.e.; 00=0”, 15=15°, 40=40°.
1. The 0° nozzle (RED): This is a blasting nozzle. It delivers a very concentrated
stream of water. Be cautious when using the straight narrow stream. It is
not recommended for use on painted or wood surfaces, or items attached
with adhesive backings. Uses: Removing weeds from sidewalk cracks,
stubborn stains from concrete, masonry, aluminum and steel, caked mud
from equipment, and cleaning lawn mower undersides.
2. The 15° nozzle (YELLOW): This is a chiseling nozzle. The spray should
be directed at a 45° angle to the surface and used like a scraper to remove
paint, grease and dirt. Uses: Surface preparation (removing mildew stains
and paint chips).
3. The 40° nozzle (WHITE):
This is a wash nozzle. This wide spray pattern disperses the water pressure
over a large area and is recommended for moderate washing. Uses: Washing
aluminum siding, cleaning windows, washing vehicles, spraying sidewalks,
driveways, and patios.
NOZZLE CONNECTION:
1. Be certain the trigger gun is locked in the “OFF” position. See WARNING, left.
2. The nozzle assembly should be disconnected from the gun/wand assembly
at this by retracting the locking ring on the quick-connect tting to remove
the nozzle.
WARNING
RISK OF INJECTION CAUSING
SEVERE INJURY!
NEVER LOOK DIRECTLY AT THE
NOZZLE ORIFICE UNLESS IT
IS DISCONNECTED FROM THE
GUN/WAND ASSEMBLY!
CONNECTION OF Q.C. NOZZLES
QUICK-CONNECT FITTING
WARNING
RISK OF SEVERE INJURY!
THE TRIGGER GUN SHOULD
ALWAYS BE LOCKED IN THE OFF
POSITION WHEN NOT IN USE!
QUICK-CONNECT (Q.C.)
0°
15°
40°
12
12 Operator's Manual
INSTALLATION & PREPARATION
WATER SUPPLY:
1. Select a water supply hose which is a quality grade of garden hose measuring
at least 3/4" ID and no longer than 50 feet.
2 Check the water inlet strainer to ensure it is clean and free of any obstructions.
As a strainer becomes obstructed, it restricts proper ow of water to the
pump. This can result in cavitations which will prematurely cause failure
of pump packings.
a. Using a screwdriver, remove the screen from the water inlet.
b. Clean or replace if necessary.
3. Connect the hoses.
a. Connect one end of the water supply hose to the water inlet of the unit.
b. Connect the other end of the hose to your pressurized water supply.
NOTE 1: Do not use a non-pressurized water supply (i.e. from a pond or
well) with this unit.
NOTE 2: When connecting the water inlet to the water supply mains, local
regulations of your water company must be observed. In some
areas, the unit must not be connected directly to the public drinking
water supply. This is to ensure there is no feedback of detergents
into the water supply. (Direct connection is permitted if a backow
preventer is installed. Check with local authorities for approval.)
NOTE 3: If there is a high mineral content in your water, it is highly
recommended that a water softener and an additional water strainer
be added to the water inlet to help prevent the possibility
of excessive scale buildup inside the heat exchanger coil. Clean
both strainers before starting your pressure washer.
NOZZLE REVIEW:
Various nozzles may be quick-connected into the end of the wand to change the
spray pattern or use the detergent feature. When using Quick Connects (Q.C.),
be certain the connection is securely locked. If not, the high pressure water
may shoot the nozzle from the wand, causing severe injury or serious damage.
To determine spray fan, refer to the actual number stamped on the nozzle. The
rst two digits indicate the spray fan in degrees, i.e.; 00=0”, 15=15°, 40=40°.
1. The 0° nozzle (RED): This is a blasting nozzle. It delivers a very concentrated
stream of water. Be cautious when using the straight narrow stream. It is
not recommended for use on painted or wood surfaces, or items attached
with adhesive backings. Uses: Removing weeds from sidewalk cracks,
stubborn stains from concrete, masonry, aluminum and steel, caked mud
from equipment, and cleaning lawn mower undersides.
2. The 15° nozzle (YELLOW): This is a chiseling nozzle. The spray should
be directed at a 45° angle to the surface and used like a scraper to remove
paint, grease and dirt. Uses: Surface preparation (removing mildew stains
and paint chips).
3. The 40° nozzle (WHITE):
This is a wash nozzle. This wide spray pattern disperses the water pressure
over a large area and is recommended for moderate washing. Uses: Washing
aluminum siding, cleaning windows, washing vehicles, spraying sidewalks,
driveways, and patios.
NOZZLE CONNECTION:
1. Be certain the trigger gun is locked in the “OFF” position. See WARNING, left.
2. The nozzle assembly should be disconnected from the gun/wand assembly
at this by retracting the locking ring on the quick-connect tting to remove
the nozzle.
WARNING
RISK OF INJECTION CAUSING
SEVERE INJURY!
NEVER LOOK DIRECTLY AT THE
NOZZLE ORIFICE UNLESS IT
IS DISCONNECTED FROM THE
GUN/WAND ASSEMBLY!
CONNECTION OF Q.C. NOZZLES
QUICK-CONNECT FITTING
WARNING
RISK OF SEVERE INJURY!
THE TRIGGER GUN SHOULD
ALWAYS BE LOCKED IN THE OFF
POSITION WHEN NOT IN USE!
QUICK-CONNECT (Q.C.)
0°
15°
40°
WATER SUPPLY
1. Select a water supply hose which is a quality grade of garden hose
measuring at least 3/4” ID and no longer than 50 feet.
2 Check the water inlet strainer to ensure it is clean and free of any
obstructions. As a strainer becomes obstructed, it restricts proper
flow of water to the pump. This can result in cavitations which will
prematurely cause failure of pump packings.
a. Using a screwdriver, remove the screen from the water inlet.
b. Clean or replace if necessary.
3. Connect the hoses.
a. Connect one end of the water supply hose to the water inlet of the
unit.
b. Connect the other end of the hose to your pressurized water supply.
4. Follow the incoming water requirements listed below:
a. Water pressure must be a minimum of 20 pounds per square
Inch (PSI) and a maximum of 125 PSI. (A typical outdoor faucet will
generally supply this PSI if turned completely “ON”.)
b. Incoming GPM must be approximately one gallon more than the
outgoing GPM stated on the pressure washer nameplate. (You can
check GPM by timing how long it takes to fill a 5 gallon container.)
c. Incoming water temperature must not exceed 125°F. Excessive
pump damage may result if the water temperature exceeds this
acceptable level.
WARNING
THE TRIGGER GUN SHOULD ALWAYS BE LOCKED IN THE OFF
POSITION WHEN NOT IN USE!
NOTICE
• Do not use a non-pressurized water supply (i.e. from a pond or well)
with this unit.
• When connecting the water inlet to the water supply mains, local
regulations of your water company must be observed. In some areas,
the unit must not be connected directly to the public drinking water
supply. This is to ensure there is no feedback of detergents into the
water supply. (Direct connection is permitted if a back flow preventer
is installed. Check with local authorities for approval.)
• If there is a high mineral content in your water, it is highly recommend-
ed that a water softener and an additional water strainer be added
to the water inlet to help prevent the possibility of excessive scale
buildup inside the heat exchanger coil. Clean both strainers before
starting your pressure washer.
INSTALLATION & PREPARATION INSTALLATION & PREPARATION

20 21
UNLOADER
WATER INLET STRAINER
THERMAL RELIEF VALVE
PRE-START INSPECTION PROCEDURES
Standard Models: The unloader has been preset at the factory.
5. Never allow the unit to operate without the incoming water line
attached and the water supply is completely turned on.
To ensure the water temperature does not exceed acceptable levels,
never allow the pressure washer to operate in the bypass mode (with the
unit running and the trigger closed) for more than three minutes.
A thermal relief valve has been added to this unit to protect the pump.
This valve will open and release water if the water temperature in the
pump has exceeded 140° F. This will allow fresh, cool water to enter the
system, therefore preventing premature failure of pump packings.
Before starting the unit, perform the following procedures:
1. Inspect the electrical cords for cuts. If a cut is found, DO NOT TOUCH
OR USE CORD! Replace cord before starting unit.
2. Check the oil level in the pump.
3. Inspect the water inlet strainer. Clean or replace if necessary. See
“Water Supply”, #2.
4. Check all hose connections to ensure they are securely tightened.
5. Inspect for system water leaks, oil leaks and fuel leaks. If a fuel leak is
found, DO NOT START UNIT! See “Risk of Explosion or Fire”, pg. 8.
Be sure that all damaged parts are replaced and that the mechanical
problems are corrected prior to operation of the unit. If you require
service, contact Customer Service.
6. Inspect high pressure hoses for kinking, cuts and leaks. If a cut or leak
is found, DO NOT USE HOSE! Replace hose before starting unit.
See “Risk of Injection or Severe Cutting Injury”, pg. 9. Be sure that all
damaged parts are replaced and that the mechanical problems are
corrected prior to operation of the unit. If you require service, contact
Customer Service.
13
Operator's Manual 13
INSTALLATION & PREPARATION
4. Follow the incoming water requirements listed below:
a. Water pressure must be a minimum of 20 pounds per square inch (PSI)
and a maximum of 125 PSI. (A typical outdoor faucet will generally
supply this PSI if turned completely "ON".)
b. Incoming GPM must be approximately one gallon more than the outgoing
GPM stated on the pressure washer nameplate. (You can check GPM
by timing how long it takes to ll a 5 gallon container.)
c. Incoming water temperature must not exceed 125°F. Excessive pump
damage may result if the water temperature exceeds this acceptable
level.
5. Never allow the unit to operate without the incoming water line attached and
the water supply is completely turned on.
UNLOADER:
Standard Models:
The unloader has been preset at the factory.
THERMAL RELIEF VALVE:
To ensure the water temperature does not exceed acceptable levels, never
allow the pressure washer to operate in the bypass mode (with the unit
running and the trigger closed) for more than three minutes.
A thermal relief valve has been added to this unit to protect the pump. This
valve will open and release water if the water temperature in the pump has
exceeded 140° F. This will allow fresh, cool water to enter the system,
therefore preventing premature failure of pump packings.
PRE-START INSPECTION PROCEDURES:
Before starting the unit, perform the following procedures:
1. Inspect the electrical cords for cuts. If a cut is found, DO NOT TOUCH OR
USE CORD! Replace cord before starting unit.
2. Check the oil level in the pump.
3. Inspect the water inlet strainer. Clean or replace if necessary. See “Water
Supply”, #2.
4. Check all hose connections to ensure they are securely tightened.
5. Inspect for system water leaks, oil leaks and fuel leaks. If a fuel leak is
found, DO NOT START UNIT! See “Risk of Explosion or Fire”, pg. 5. Be
sure that all damaged parts are replaced and that the mechanical problems
are corrected prior to operation of the unit. If you require service, contact
Customer Service.
6. Inspect high pressure hoses for kinking, cuts and leaks. If a cut or leak
is found, DO NOT USE HOSE! Replace hose before starting unit. See
“Risk of Injection or Severe Cutting Injury”, pg. 6. Be sure that all damaged
parts are replaced and that the mechanical problems are corrected prior to
operation of the unit. If you require service, contact Customer Service.
END OF PREPARATION INSTRUCTIONS
WATER INLET STRAINER
Operating Instructions
FLUSHING THE SYSTEM
This unit has a steel coil which, after setting, will cause the water remain-
ing in the coil from the previous usage to turn brown or black. This water
must be flushed from the system before start-up. This procedure should
be performed without the high pressure hose, gun and lance assembly
installed.
1. Turn on the water supply.
2. Low pressure water will begin flowing from the water outlet. This
allows the unit to flush any particles from the system. The unit is
flushed when the water is clear.
3. Once the system is flushed, turn off the water supply and connect
the high pressure hose to the water outlet of the unit.
4. Connect the trigger gun and lance assembly to the high pressure
hose.
5. Turn on the water supply.
CAUTION
BE CERTAIN THE HOSE, GUN & LANCE ASSY. ARE NOT
CONNECTED TO THE UNIT WHILE PRIMING THE PUMP. PRIMING
ALLOWS MINERAL DEPOSITS TO BE RELEASED FROM THE
SYSTEM WHICH WOULD OBSTRUCT OR DAMAGE THE GUN
AND NOZZLE ASSEMBLY RESULTING IN COSTLY REPAIRS.
START-UP/COLD WATER OPERATION
WARNING
KEEP CLEAR OF NOZZLE! NEVER PLACE HAND OR FINGERS IN
FRONT OF NOZZLE!
DO NOT DIRECT DISCHARGE STREAM AT PEOPLE OR PETS!
AUTO START/STOP FEATURE WILL SHUTDOWN THE PRESSURE
WASHER UNTIL GUN IS TRIGGERED. TO PREVENT ACCIDENTAL
HIGH PRESSURE DISCHARGE, DO NOT LEAVE UNIT
UNATTENDED WHILE IN THIS MODE.
INSTALLATION & PREPARATION OPERATION

22 23
1. Refer to the “Safety Precautions” pgs. 7-12 before starting the unit.
2. Locate the Safety Decals on your unit and heed their warnings.
3. Ensure that the switch is in the “OFF” position.
4. Pointing the trigger gun in a safe direction, unlock the trigger gun and
squeeze the trigger. Brace yourself for possible gun kickback when
the pump starts.
5. Move the switch to the “Pump” position.
6. Once the unit has started, perform the following procedures with the
gun open:
a. Inspect for system water leaks, oil leaks and fuel leaks. If a fuel leak
is found, TURN UNIT OFF IMMEDIATELY! See “Risk of Explosion or
Fire”, pg. 8. Be sure that all damaged parts are replaced and that the
mechanical problems are corrected prior to operation of the unit. If you
require service, contact Customer Service.
b. Inspect high pressure hoses for kinking, cuts and leaks. If a cut or
leak is found, DO NOT TOUCH HOSE AT LEAK!!! TURN UNIT OFF
IMMEDIATELY! Replace hose before starting the unit. See “Risk of In-
jection or Severe Cutting Injury” pg. 9. Be sure that all damaged parts
are replaced and that the mechanical problems are corrected prior to
operation of the unit. If you require service, contact Customer Service.
7. At this point, the unit is operating as a cold water pressure washer.
Trigger the gun several times and try adjusting the water pressure by
rotating the grip on the lance. NEVER place hand or fingers in front of
the nozzle or look directly into the nozzle! High pressure water creates
a risk of severe injury!
8. Do not allow unit to operate in bypass mode (with trigger closed) for
more than three minutes without triggering the gun. Failure to follow
this simple rule can cause premature failure of pump packings.
9. Your pressure washer can deliver high pressure spray and a variety
of spray patterns using cold water. If you wish to use the Hot Water,
Steam application or Cleaning with Detergents, for the correct proce-
dures.
CAUTION
DO NOT ALLOW SPRAY PATTERN TO REMAIN ON A FIXED AREA
FOR AN EXTENDED PERIOD OF TIME. POSSIBLE DAMAGE MAY
OCCUR TO THE AREA.
HOT WATER OPERATION
WARNING
THE WATER TEMPERATURE COULD BECOME VERY HOT DURING
HOT WATER OPERATION. BE CAUTIOUS WHEN ADJUSTING
PRESSURE OR CONTROLLING THE TRIGGER GUN/ LANCE
ASSEMBLY.
1. Follow the steps 1-8 outlined for “START-UP/COLD WATER
OPERATION”.
2. Move the switch to the “Burner” position. On initial start-up, water
will begin turning hot in approximately 20 seconds and will reach
maximum temperature in approximately 2-1/2 minutes, provided the
trigger remains squeezed. The burner will stop firing when the trigger
is released.
At this point, the unit is operating as a hot water pressure washer. Be
extremely cautious when adjusting the pressure and controlling the
trigger gun/ lance assembly to avoid the possibility of burns.
NOTICE
While spraying, it is normal for the burner to fire intermittently. The high
limit switch will cause combustion to cease when the temperature of
the discharged water exceeds the temperature setting of the switch.
Combustion will begin again when the water temperature drops below
the minimum setting .
STEAM OPERATION (IF APPLICABLE)
1. Follow steps 1-8 outlined for “STARTUP/COLD WATER
OPERATION”.
2. Ensure the quick-connect at the end of the lance is cool enough to
touch, then remove the high pressure nozzle and replace it with the
steam nozzle. Remove the high pressure hose and replace it with the
steam hose.
3. Turn unloader knob completely counterclockwise to the minimum
setting.
4. Turn the switch to “Steam”.
At this point, the unit is operating as a steam pressure washer. Be
extremely cautious when adjusting the pressure and controlling the
trigger gun/ lance assembly to avoid the possibility of burns.
OPERATION OPERATION

24 25
1. Prepare detergent solution according to label directions. Never pump
acids, alkaline, abrasive fluids or solvents through the unit.
2. Adjust the amount of detergent desired by locating the adjustment
knob at the end of the clear vinyl hose. Turn the knob completely
counterclockwise to set at maximum siphon rate.
3. Fully immerse the detergent strainer into the detergent solution.
4. With the trigger gun locked in the “OFF” position, securely quick-
connect the detergent spray nozzle (#65 40° BLACK) into the end
of the wand.
5. To apply solution; unlock the trigger gun and squeeze the trigger. In
a few moments a detergent/water mixture will exit the nozzle. Start
spraying the lower portion of the surface being cleaned and move up,
using long overlapping strokes. Applying from the bottom up helps
avoid streaking. Allow to soak briefly. (Avoid working on hot surfaces
or in direct sunlight to minimize the chances of the detergent drying,
which may result in damaging painted surfaces.) Be certain to rinse
a small section at a time.
6. To rinse; lock the trigger gun in the “OFF” position, securely quick-
connect the desired high pressure nozzle into the end of the wand.
Unlock the trigger gun and spray. It will take about 30 seconds to
purge all detergent from the line. For best rinsing results, start at the
top and work down.
7. Siphon a gallon of water through the low pressure detergent injection
system after each use. This prevents the possibility of corrosion or
detergent residue causing mechanical problems during the next use.
CLEANING WITH DETERGENTS UNDER LOW PRESSURE
NOTICE
The burner will shut down if the switch is moved to “Steam” without
first setting the unloader to minimum or operating in the high pressure
mode.)
NOTICE
This feature is designed for use with mild detergents only. Since the
cleaning solution travels through the heat exchanger coil, DO NOT
use corrosives as they will cause extensive damage as well as pose
a considerable safety hazard.
NOTICE
This injection system is designed to apply detergents under low pres-
sure only. It will not allow detergent solutions to be introduced into the
system unless the adjustable nozzle is set in the low pressure mode.
SHUTDOWN
WARNING
TO PREVENT ACCIDENTAL HIGH PRESSURE DISCHARGE, DO
NOT LEAVE UNIT UNATTENDED UNTIL “OFF/PUMP/BURNER/
STEAM” SWITCH IS IN THE OFF POSITION.
1. Move the switch to the “Pump” position.
2. Squeeze the trigger and discharge the water for a period of three
minutes to cool the heat exchanger and high pressure hose.
(Insufficient cool down period of the high pressure hose will cause
excessive wear and eventual rupturing of the hose.)
3. Move the switch to the “OFF” position.
4. Turn off the water supply and trigger the gun momentarily to relieve
trapped pressure.
5. Disconnect and drain the high pressure hose, gun, and lance. Wipe
the unit clean and store in a non-freezing environment.
OPERATION OPERATION

26 27
Storage & Maintenance Instructions
SPECIFIC MAINTENANCE
PUMP: Change the pump oil after the first 50 hours of operation. After
initial change, every 3 months or 250 hour intervals are recommended.
If oil appears dirty or milky, changes may be required in greater
frequency. Use pump oil SAE20 or 30 and fill only to the center of the
oil sight glass. DO NOT overfill.
QUICK COUPLERS: There are o-ring seals inside the couplers which
will deteriorate. To replace, simply install a replacement o-ring to
correct the leak. (Additional o-rings can be purchased from your
dealer.)
NOZZLE: Water flow through the spray nozzle will erode the orifice,
making it larger, resulting in a pressure loss. Nozzles should be
replaced whenever pressure is less than 85% of the maximum. The
frequency of replacement will depend upon such variables as mineral
content in the water and number of hours the nozzle is used.
BURNER AIR ADJUSTMENT: The air shutter has been factory preset
for proper operation between sea level and 2000 feet elevation at
standard conditions (60°F ambient water and air temperatures). To
assure maximum combustion efficiency at colder temperatures and
higher altitudes, it will be necessary to adjust the air supply to the
combustion chamber. A smoke spot test is recommended during any
air shutter adjustment. This will aid in maximizing the burner efficiency
and avoid the inefficient operation and excessive sooting of the
combustion chamber.
1. The machine must be running and the burner on.
2. Take a smoke spot test to determine if more or less air is required for
proper combustion.
a. If the test is greater than a #3 smoke, turn the shutter arm
counterclockwise to increase the air flow into the combustion
chamber.
b. If the test is yellowish in color, turn the shutter arm clockwise to
decrease the air flow into the combustion chamber.
3. Hold onto the air shutter adjusting arm and loosen the locking nut.
Move the shutter in 1/8” increments and retighten the locking nut after
each 1/8” movement.
4. Trigger the gun on and off slowly to make sure there is proper ignition.
Slight or no puffing on the ignition, and a smoke spot test of 0-3 is
good.
5. Repeat steps 2 and 3 until step 4 is attained.
LEAKS: Promptly eliminate any leaks found in the pumping system by
removing suspect parts, applying thread sealant to the threads and
reinstalling.
NOTICE
If using Teflon tape, be certain no tape gets inside any plumbing to
prevent the possibility of a plugged spray nozzle.
WINTERIZING
1. For storage and transportation purposes in subfreezing ambient tem-
peratures, it will be necessary to winterize this unit. This unit must be
protected to the lowest incurred temperature for the following reasons:
a. If any part of the pumping system becomes frozen; excessive
pressure may build up in the unit which could cause the unit to burst
resulting in possible serious injury to the operator or bystanders.
b. The pumping system in this unit may be permanently damaged if
frozen. FREEZE DAMAGE IS NOT COVERED BY WARRANTY.
If you must store your unit in an area where the temperature may fall
below 32°F, you can protect your unit by following the procedure outlined
below.
1. Gather the following items:
a. Two 5 gallon containers.
b. One gallon of antifreeze. (Use an environmentally safe antifreeze.)
c. Water supply.
d. Three foot hose, 1/2-3/4 I.D. with a 3/4 inch male garden hose fit-
ting.
2. Procedure:
a. To start winterizing, unit must be run according to the “Start-up
Cold Water Operation”.
b. After running, shut off the unit and water supply.
c. Relieve system pressure by pointing the trigger gun in a safe direc-
tion and squeezing the trigger until water flow ceases to exit the Lance
Assy.
d. Lock the trigger gun in the OFF position and adjust the Lance to the
low pressure mode.
e. Remove the water supply hose from the unit and attach the 3 foot
hose securely to the inlet connection.
f. Shut off the detergent injector (if applicable).
g. Fill one 5 gallon container with water.
h. Holding the 3 foot hose in an upright position, completely fill the
hose with water. Then plug the open end of the hose with your thumb
or finger. Place the plugged end into the 5 gallon container of water.
i. Start the unit. Trigger the gun several times until all the air is worked
out of the system (unit is primed).
MAINTENANCE MAINTENANCE

28 29
j. With the trigger gun held open, siphon enough water out of the 5
gallon container until there is just enough water left to mix with the
antifreeze.
k. Point the trigger gun into the empty container. (Be certain to wear
safety attire for protection from splashing.)
l. Trigger the gun until the antifreeze begins to exit the trigger gun.
Release the trigger for 3 seconds, then trigger the gun for 3 seconds.
Continue cycling the trigger gun several times until all the antifreeze
mixture is siphoned from the container.
m. Stop the unit.
n. Detach the 3 foot hose from the unit and drain any excess antifreeze
back into the 5 gallon container storage & maintenance
o. Disconnect the hose and trigger gun from the unit and drain any
excess antifreeze back into the 5 gallon container.
p. Drain hose, trigger gun and lance assembly and store with the unit
in a safe non-freezing area.
q. Store antifreeze solution for next use or dispose of according to
state EPA laws.
3. OPTIONAL PROCEDURE:
a. Shut the unit and water supply off.
b. Relieve system pressure by pointing the trigger gun in a safe
direction and squeezing the trigger until water flow ceases to exit the
nozzle.
c. Disconnect and drain the hose, trigger gun and lance assembly.
d. Remove the coil drain plug from the heat exchanger inlet.
e. Start the unit and allow it to run until all the water exits the unit.
Once the water has stopped flowing from the unit, turn off.
NOTICE
When using this procedure, use caution as ice chips can form from
drops of water which could cause the unit to burst if starting before
completely thawed.
NOTICE
Proper winterizing is based on the recommended manufacturer’s
instructions listed on the “Protection Chart” shown on the back label of
most antifreeze containers.
20
20 Operator's Manual
d. Remove the coil drain plug from the heat exchanger inlet.
e. Start the unit and allow it to run until all the water exits the unit. Once
the water has stopped owing from the unit, turn off.
NOTE: When using this procedure, use caution as ice chips can form from
drops of water which could cause the unit to burst if starting before
completely thawed.
COIL DRAIN PLUG
COIL DRAIN PLUG
MAINTENANCE CHART
PROCEDURE DAILY 3
MONTHS
6
MONTHS
9
MONTHS
12
MONTHS
Inspect electrical cord X
Test GFCI X
Test voltage and amp draw X
Check water pump oil level X
Change water pump oil ** X X X X
Oil leak inspection X
Fuel leak inspection X
Water leak inspection X
Hose inspection X
Water inlet filter inspection X
Check fuel filter/water
separator
X
Inspect belt X X X X
Replace high pressure
nozzle***
X X X X
Replace fuel filter/water
separator
X
Inspect fuel pump filter* X
Replace fuel nozzle* X
Check burner air adjust-
ment
X X X X
Check burner electrodes* X
Test water pressure* X X X X
Test fuel pressure* X X X X
Test water temperature* X X X X
Descale coil**** X
* Must be performed by an authorized service technician.
** The pump oil must be changed after the first 50 hours of operation
and every 250 hours or 3 months, whichever comes first.
*** High pressure nozzle should be replaced whenever pressure is less
than 85%.
**** Scale build-up will vary with mineral content in the water and amount
of usage. Descaling can range from weekly to yearly maintenance.
MAINTENANCE MAINTENANCE

30 31
Troubleshooting
TROUBLESHOOTING CHART
SYMPTOM PROBABLE CAUSE REMEDY
Pump motor will not
run.
Circuit overload. Check wall breaker or fuse.
GFCI tripped. Reset.
Motor overload. Reset thermal overload button
on pump motor or inside
electrical control panel.
Auto Start/Stop Option in
use.
Point gun in a safe direction an
squeeze trigger.
No discharge at
nozzle when trigger
mechanism is
squeezed.
Inadequate water supply. Ensure hose is 3/4” diameter
and incoming water supply is
turned on.
Low or fluctuating
pressure.
Kink in water inlet hose. Remove kink.
Kink in high pressure
discharge hose.
Replace kinked high pressure
hose.
Water inlet screen
obstructed.
Remove screen, clean or
replace.
Pump sucking air. (Prime
eliminated)
Tighten all water intake
connections Eliminate leaks in
intake line.
Adjustable Grip on Lance is
not in high pressure mode.
Turn grip counterclockwise to
move to high pressure.
Obstructed or worn spray
nozzle.
Remove, clean or replace.
Damaged or obstructed
valve assy. on pump.
Remove, clean or replace.
Pump packings worn. Replace packings.
Unloader/Bypass valve not
operating correctly.
Repair or replace.
Scale build-up in heat
exchanger coil.
Descale coil.
Water is leaking from
Thermal Relief Valve.
Water inlet temperature is
too high.
Incoming water temperature
must be less than 125°.
Water temperature is too
high.
Do not allow unit to operate in
bypass mode (with the trigger
gun closed) for more than three
minutes.
Defective valve. Replace.
Oil appears milky or
foamy.
Water in oil. Change pump oil. Fill to proper
level.
SYMPTOM PROBABLE CAUSE REMEDY
Oil leaking from unit. Worn seals or o-rings. Contact Customer Service.
Detergent will not
siphon .
Detergent strainer is not
completely submerged in
detergent solution.
Check, submerge if necessary.
Detergent strainer
obstructed.
Inspect, clean or replace.
Detergent hose cut,
obstructed or kinked.
Inspect, clean or replace.
Detergent adjusting knob
turned to closed position.
Open adjusting knob. Refer to
“Cleaning with Detergents”.
Detergent will not
siphon into the Low
Pressure Mode
Adjustable grip on lance is
not in low pressure mode.
Turn grip clockwise to move to
low pressure
Too many high pressure
hose extensions attached to
the water outlet.
Use one extension maximum.
Nozzle assembly is plugged. Clean or replace.
Ball & Spring in Venturi
stuck.
Remove, clean or replace.
Water flows back into
detergent container.
Check valve missing or
corroded.
Remove, clean or replace.
Water flows from the
nozzle when the trigger
gun is locked in the
“OFF” position
Trigger gun is
malfunctioning.
Repair or replace.
Water is leaking under
heat exchanger coil.
Coil drain plug is not
installed.
Install.
Safety Relief device is
relieving caused by an
unloader or pressure switch
malfunction.
1.Detect and correct unloader or
pressure switch problem.
2. Replace safety relief device.
NEVER run unit without safety
relief device. Doing so can cause
an explosion!
Burner will not ignite Switch is not in “Burner”
position.
Check switch position.
No voltage. Contact Customer Service.
Out of fuel. Refuel. (Reset burner primary
control on cad cell options.)
Fuel pickup screen
obstructed.
Consult Service.
TROUBLESHOOTING TROUBLESHOOTING

32 33
SYMPTOM PROBABLE CAUSE REMEDY
Burner will not ignite
Steam Option:
Cad Cell Option:
Trigger gun is closed. Open trigger gun for pressure.
Pressure switch override. Pressure should be over 250
PSI to allow burner to come on.
High limit switch override. Unit will automatically reignite
when cool.
Flexible coupler broken. Replace.
Dirty or clogged fuel filter/
water sep.
Drain or replace as necessary.
Fuel pump sucking air. Tighten all fuel intake
connections. Eliminate leaks in
intake line.
Fuel pump inoperative. Check pressure, replace if
needed.
Dirty or clogged fuel nozzle. Replace.
Improper burner air
adjustment.
Adjust as explained on page 26.
Ignition transformer failure. Replace.
Ignition electrodes
damaged or worn.
With unit running and trigger
gun closed, look through burner
sight glass to ensure there is
sparking across electrodes.
Fuel solenoid valve failure. Replace.
High PSI mode. Verify Burner/Steam switch is in
“Steam” mode.
Steam Mode. Verify Burner/Steam switch is in
“Steam” mode.
Steam mode: Pump Head
PSI too high.
Reduce pressure to 350PSI.
Primary control lock-out. Reset.
Burner motor will not
run.
Switch is not in “Burner”
position.
Check switch position.
No voltage. Consult Customer Service.
Motor overload. Motor automatically resets when
cool.
Fuel pump seized. Allow motor to cool. Repair or
replace.
Blower Fan seized. Allow motor to cool. Repair or
replace.
SYMPTOM PROBABLE CAUSE REMEDY
Burner runs erratically. Water in the fuel oil. Drain fuel filter/water separator.
Drain fuel tank, and replace with
clean fuel.
Dirty fuel filter/water
separator.
Replace element.
Dirty fuel nozzle. Replace.
Fuel pickup screen
obstructed.
Consult Customer Service.
Improper air adjustment
setting.
Adjust as explained on page 26.
Fuel pump malfunctioning. Replace.
Burner runs, but will
not heat.
Poor or improper fuel
supply.
Check fuel to ensure it is correct.
Drain tank and replace filter if
necessary and refill with proper
fuel.
Low fuel pump pressure. Check fuel pump pressure,
adjust or replace if needed.
Dirty fuel nozzle. Replace.
Fuel pickup screen
obstructed.
Consult Customer Service.
Improper air adjustment
setting.
Adjust as explained on page 26.
Scale build up in heat
exchanger coil.
Consult your Customer Service.
Burner discharges
white smoke.
Low on fuel. Refuel. If white smoke persists,
consult Customer Service.
Poor or improper fuel
supply.
Check fuel pump pressure,
adjust or replace if needed.
Dirty fuel nozzle. Replace.
Fuel pickup screen
obstructed.
Consult Customer Service.
Improper air adjustment
setting.
Adjust as explained on page 26.
Cold combustion chamber
start-up.
Run burner for several minutes.
Excessive air supply. Adjust as explained on page 26.
Burner discharges
black smoke.
Insufficient air supply. Adjust as explained on page 26.
Combustion chamber
loaded with unburned fuel.
Consult Customer Service.
TROUBLESHOOTING TROUBLESHOOTING

34 35
Parts List
SPECIFICATIONS
MODEL NUMBER HW152EMD HW204EMD
Operating Pressure (PSI/Bar) 1500/103 (+/- 5%) 2000/138 (+/- 5%)
Water Volume (GPM/lpm) 2.0/ 7.6 (+/- 5%) 2.8/ 10.6 (+/- 5%)
Outlet Water Temperature
(F/C) 140°F / 60°C (+/- 10°F) rise above inlet ambient (210°F / 99°C maximum)
Motor: TEFC
Horsepower 2.0 4.0
Phase Single
Voltage 120 240
Amperage 17.0 16.0
High Pressure Pump: Direct Driven, Oil Bath, Triplex Piston
Oil Type 15W20 Detergent
Oil Capacity (oz./lter) 16.9 / 0.50
Plungers Ceramic
Manifold Forged Brass
Valves Stainless Steel
Unloader Preset
Heat Dump Valve Relieves heated water during unloader bypass stage
Detergent Injector: Adjustable High Pressure
Burner Fuel System
Fuel Type No. 1 or No. 2 Fuel Oil, Diesel or Kerosene
Fuel Capacity (gal./liters) 4.46 / 16.9
Fuel Filter Inline Filter
Fuel Pump Two Line, Single Stage
Fuel Pressure (PSI/BAR) 145 / 10
Fuel Nozzle 1.00 60° B Delavan 1.25 60° B Delavan
Fuel Consumption 1.21 / 4.58 Cont. Burner 1.48 / 5.54 Cont. Burner
Voltage 120 240
Amps 1.6 0.9
Heat Exchanger: Vertical, Top Fired, Dual Spiral Coil
BTU Input 169.000 207.000
Efficiency 86% with #2 Fuel Oil / Diesel
Smoke Density 0-3 per ASTM D2156
SPECIFICATIONS CONT.
MODEL NUMBER HW152EMD HW204EMD
Controls:
On/Off Switch Industrial grade cam switch
Pressure Switch Shuts off burner fuel supply upon trigger release
High Limit Switch Shuts off burner fuel supply when outlet water temp.
exceeds 210°F / 99°C
Fuel Solenoid: 120 Volt 240 Volt
Safety Relief: Relieves excess system pressure
Unit Net Weight (Lbs/Kg) 299 / 136 316 / 143
Unit Shipping Weight (Lbs/
Kg) 422 / 191 439 / 199
Unit Net Dimensions (In/Cm) 43L x 29.5W x 36.5H / 109.5L x 75W x 93H
Unit Shipping Dimensions (In/
Cm) 46.5L x 31.5W x 48.5H / 118L x 80W x 123H
PARTS LIST PARTS LIST

36 37
FLOW CHART
57
6
©Copyright 2013
FLOW CHART
WATER FLOW: Connect a pressurized water source to the inlet GAR-
DEN HOSE CONNECTION (1) and turn on the water supply.
The water then travels into the TRIPLEX HIGH PRESSURE PUMP (2)
which has an UNLOADER (3) that bypasses the water when the trigger
gun is closed. To protect the pump from heated water during this bypass
stage, a HEAT DUMP VALVE (4) will open at 140°f/60°c allowing the
heated water to escape. The heat dump valve automatically resets when
the water cools. The PRESSURE SWITCH (5) controls the fuel supply to
the burner.
From there, the water will flow into the HEAT EXCHANGER INLET (8)
where it is heated when the burner is on. As the water exits the HEAT EX-
CHANGER OUTLET (9), it enters a safety system which protects the op-
erator from danger. The safety system contains a HIGH TEMPERATURE
LIMIT SWITCH (16) which senses the water temperature and shuts off
the fuel supply to the burner if it gets too hot. If the unloader fails to by-
pass the water or the burner remains on when the trigger gun is closed,
the SAFETY RELIEF (14) will relieve and allow water to exit safely.
The heated water then flows through the HIGH PRESSURE HOSE (13)
and to the TRIGGER GUN ASSEMBLY (12) which allows the operator
to control the water spray. When the trigger gun is open, the water flows
through the LANCE (11) and exits the NOZZLE (10).
FUEL FLOW: The fuel pump draws fuel from the FUEL TANK (19)
through a replaceable FUEL FILTER (18) and into the FUEL PUMP (17).
Fuel exits the fuel pump, into a FUEL SOLENOID VALVE (6) which con-
trols fuel flow to the FUEL NOZZLE (7) where it ignites and burns in the
heat exchanger.
GENERAL THEORY OF OPERATION
PARTS LIST PARTS LIST

38 39
FRAME ASSEMBLY
ITEM DESCRIPTION PART # QTY
1 Electric Cord (1500 PSI) 32-0215 1
- Electric Cord (1000 PSI) 32-0268 1
- Electric Cord (2000 PSI) 32-0333 1
2 Electric Box Assembly N/A 1
3 Motor Pump Assy N/A 1
4 Bolt 27-0066 8
5 Washer 28-0003 20
6 Locknut 30-0157 10
7 Bolt 27-0015 2
8 Bolt 27-9550 1
9 Push/Pull Toggle Clamp 33-0400 1
10 Lockwasher 29-0007 4
11 Locknut 30-0155 2
12 Hose Clip 42-0052 1
13 Bolt 27-1201 1
14 Fuel Hose 15-0147 2
15 Bolt 27-0067 2
16 Nozzle Holder 20-1276A01 1
17 Grommet 33-0001 5
18 Fuel Tank Assembly N/A 1
19 Collar 33-0351 4
20 Wheel 14-0130 4
21 Axle 20-0524 2
22 Bolt 27-0072 4
23 Hose Reel Mounting Bracket 20-1395A42 1
24 Heat Exchanger/Blower Motor Assembly N/A 1
FRAME ASSEMBLY SPECS
DRAWING/PART NO:
DRAWING SIZE: DRAWN BY:APP'D:DATE:SCALE:
HSE SMALL - BE UNIT ASSEMBLY_DIRECT FEED
NTS RSWB10/17/14
HSE SMALL - BE UNIT ASSEMBLY (DIRECT FEED)
Mi-T-M Corporation
M:\Drawings\PRIVATELABEL\BEPRESSURESUPPLY\HSESMALL\HSESMALL-BEUNIT ASSEMBLY_DIRECTFEED.iam
3
2
46795104
11
14
1418
212019
24
8
1
REC'D: DATE:
5
1213
6
5
23
5
22
17
16
5
15
56
PARTS LIST PARTS LIST