Hotsy 9460 User manual

8.914-364.0-G 12/21/18
9450 / 9460
Hot Water - Oil Fired Burner Modules
Operator’s Manual
MODELS: 9450
1.103-905.0
9460
1.103-907.0
For the Dealer nearest you,
consult our web page at
www.kaercher/us/.com

29450 / 9460 Operators Manual - Oil Fired 8.914-364.0 - G
Machine Data Label

3
Table of Contents
Machine Data Label . . . . . . . . . . . . . . . . . . . . . . . . . .2
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . .3
How To Use This Manual . . . . . . . . . . . . . . . . . . . . .4
Safety
Introduction & Safety Information . . . . . . . . . . . . . . .5
IMPORTANT SAFETY INFORMATION . . . . . . . . . .6
Operations
Technical Specifications . . . . . . . . . . . . . . . . . . . . 10
Component Identification . . . . . . . . . . . . . . . . . . . .11
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Operation Instructions. . . . . . . . . . . . . . . . . . . . . . . 13
Detergents & General Cleaning Techniques . . . . .14
Shutting Down & Clean Up . . . . . . . . . . . . . . . . . . .15
Maintenance
Preventative Maintenance . . . . . . . . . . . . . . . . . . .16
Winterizing Procedure. . . . . . . . . . . . . . . . . . . . . . . 16
High Limit Thermostat. . . . . . . . . . . . . . . . . . . . . . . 16
Cleaning of Coils. . . . . . . . . . . . . . . . . . . . . . . . . . .16
Deliming Coils . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Relief Valve. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Ignition Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Electrode Setting. . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Burner Nozzle . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Fuel Control System . . . . . . . . . . . . . . . . . . . . . . . .18
Fuel Pressure Adjustment. . . . . . . . . . . . . . . . . . . . 18
Burner Air Adjustment. . . . . . . . . . . . . . . . . . . . . . .18
Maintenance Schedule . . . . . . . . . . . . . . . . . . . . . . 19
Oil Change Record . . . . . . . . . . . . . . . . . . . . . . . . . 19
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Parts
9450 Left . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
9450 Right. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Parts 9450. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
9460 Left . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
9460 Right. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Parts 9460. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
PHW-Series Wayne Burner . . . . . . . . . . . . . . . . . 34
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4
How To Use This Manual
This manual contains the following sections:
• How to Use This Manual
•Safety
• Operations
• Maintenance
• Parts List
The HOW TO USE THIS MANUAL section will tell you
how to find important information for ordering correct
repair parts.
Parts may be ordered from authorized dealers. When
placing an order for parts, the machine model and
machine serial number are important. Refer to the
MACHINE DATA box which is filled out during the
installation of your machine. The MACHINE DATA box
is located on the inside of the front cover of this manual.
The model and serial numbers will be found on a decal
attached to the machine
The SAFETY section contains important information
regarding hazardous or unsafe practices of the
machine. Levels of hazards are identified that could
result in product damage, personal injury, or severe
injury resulting in death.
The OPERATIONS section is to familiarize the operator
with the operation and function of the machine.
The MAINTENANCE section contains preventive main-
tenance to keep the machine and its components in
good working condition. They are listed in this general
order:
• Winterizing Procedure
• Hight Limit Thermostat
• Cleaning Of Coils
• Deliming Coils
• Removal Of Soot and Heating Coil
• Relief Valve
•Fuel
• Ignition Circuit
• Electrode Setting
• Burner Nozzle
• Fuel Control System
• Fuel Pressure Adjustment
• Burner Air Adjustment
• Maintenance Schedule
• Oil Change Record
• Troubleshooting
The PARTS LIST section contains assembled parts
illustrations and corresponding parts list. The parts lists
include a number of columns of information:
•REF – column refers to the reference number
on the parts illustration.
•PART NO. – column lists the part number for
the part.
•QTY – column lists the quantity of the part used
in that area of the machine.
•DESCRIPTION – column is a brief description
of the part.
•NOTES – column for information not noted by
the other columns.
NOTE: If a service or option kit is installed on your
machine, be sure to keep the KIT INSTRUCTIONS
which came with the kit. It contains replacement parts
numbers needed for ordering future parts.
NOTE: The manual part number is located on the
lower right corner of the front cover.
Model:
Date of Purchase:
Serial Number:
Dealer:
Address:
Phone Number:
Sales Representative:
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5
Safety
Introduction & Safety Information
Thank you for purchasing a heating module.
This manual covers the operation and maintenance of
the 9450 and the 9460 oil fired heater modules. All
information in this manual is based on the latest
product information available at the time of printing.
We reserves the right to make changes at any time
without incurring any obligation.
Owner/User Responsibility:
The owner and/or user must have an understanding of
the manufacturer’s operating instructions and warnings
before using this heating module. Warning information
should be emphasized and understood. If the operator
is not fluent in English, the manufacturer’s instructions
and warnings shall be read to and discussed with the
operator in the operator’s native language by the
purchaser/owner, making sure that the operator
comprehends its contents.
Owner and/or user must study and maintain for future
reference the manufacturers’ instructions.
SAVE THESE INSTRUCTIONS
This manual should be considered a permanent
part of the machine and should remain with it if
machine is resold.
When ordering parts, please specify model and
serial number.
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6
Safety
IMPORTANT SAFETY INFORMATION
WARNING: To reduce the risk of
injury, read operating instruc-
tions carefully before using.
AVERTISSEMENT: Pour réduire le
risque de blessures, lire atten-
tivement les instructions de
fonctionnement avant
l'utilisation.
1. Read the owner's manual thoroughly. Failure to
follow instructions could cause malfunction of the
machine and result in death, serious bodily injury
and/or property damage.
Read owner’s manual of attached pressure washer
before operating.
2. Stay alert — watch what you are doing.
3. All installations must comply with local codes.
Contact your electrician, plumber, utility company
or the selling dealer for specific details.his product
should be connected to a power supply protected
by a GFCI. Use copper conductors only for elec-
trical connections.
WARNING: Flammable liquids can
create fumes which can ignite
causing property damage or
severe injury.
AVERTISSEMENT: Des liquides
inflammables peuvent produire
des vapeurs qui peuvent
s'enflammer, causant ainsi des
dommages à la propriété ou des
blessures graves.
WARNING: Do not use gasoline, crankcase
drainings or oil containing gasoline, solvents or
alcohol. Doing so will result in fire and/or explo-
sion.
AVERTISSEMENT: Ne pas utiliser d'essence, de
drainage du carter de moteur ou d'essence
contenant de l'huile, de solvants ou de l'alcool. Agir
de la sorte risquerait de créer un incendie et/ou une
explosion.
WARNING: Risk of Explosion. Do
not spray flammable liquids.
Operate only where an open flame
or torch is permitted.
AVERTISSEMENT: Risque
d'explosion Utiliser uniquement
dans des endroits où l'utilisation
d'une flamme nue ou d'une torche
est permise.
4. This oil burning machine shall be installed only in
locations where combustible dusts and flammable
gases or vapors are not present.
5. In these oil burning models, use only kerosene, No.
1 home heating fuel, or diesel.
DANGER: Keep wand, hose, and
water spray away from electric
wiring or fatal electric shock may
result.
DANGER: Garder la lance, le
boyau et le jet d'eau à l'écart de
tout câblage électrique ou des
chocs électriques mortels
pourraient survenir.
6. To protect the operator from electrical shock, the
machine must be electrically grounded. It is the
responsibility of the owner to connect this machine
to a UL grounded receptacle of proper voltage and
amperage ratings. Do not spray water on or near
electrical components. Do not touch machine with
wet hands or while standing in water. Always
disconnect power before servicing.
WARNING: Spray gun kicks back
— hold with both hands.
AVERTISSEMENT: Le pistolet
pulvérisateur peut présenter un
risque de retour; le tenir avec les
deux mains.
7. Grip cleaning wand of the
attached pressure washer
securely with both hands before
starting the cleaner. Failure to do this could result
in injury from a whipping wand.
WARNING
READ OPERATOR’S
MANUAL THOROUGHLY
PRIOR TO USE.
OPERATIONS
SAFETY
MAINTENANCE
WARNING
RISK OF FIRE.
DO NOT USE WITH
FLAMMABLE LIQUIDS
DANGER
KEEP WATER
SPRAY AWAY FROM
ELECTRICAL WIRING.
WARNING
RISK OF EXPLOSION:
OPERATE ONLY WHERE
OPEN FLAME OR TORCH
IS PERMITTED
WARNING
TRIGGER GUN KICKS
BACK — HOLD WITH
BOTH HANDS
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Safety
WARNING: High pressure stream
of fluid from the pressure washer
attached to this equipment can
produce can pierce the skin and
its underlying tissues, leading to
serious injury and possible ampu-
tation.Keep clear of nozzle. Use
caution when operating. Do not
direct discharge stream at people
or animals or severe injury or
death will result.
AVERTISSEMENT: Le jet de liquide haute pression
de la laveuse à pression attaché à cet équipement
peut percer la peau et ses tissus sous-jacents,
causant ainsi des blessures graves et
possiblement une amputation. Faire preuve de
prudence lors de l'utilisation. Ne pas décharger
directement le jet vers des personnes ou des
animaux, car cela risquerait de causer des
blessures graves ou même la mort.
8. Never make adjustments on machine while it is in
operation.
WARNING: High pressure spray
can cause paint chips or other
particles to become airborne and
fly at high speeds.
AVERTISSEMENT: Un jet haute
pression peut écailler la peinture
ou provoquer l'émission d'autres
particules dans l'air et leur projec-
tion à hautes vitesses.
9. Always wear properly rated eye protection such as
safety goggles or face shield while spraying.
(Safety glasses do not provide full protection).
DANGER: Risk of asphyxiation.
Use this product only in a well
ventilated area.
DANGER: Risque d'asphyxie.
Utiliser ce produit uniquement
dans un endroit bien ventilé.
10. When the machine is working,
do not cover or place in a closed
space where ventilation is insufficient.
WARNING: Risk of fire. Do not
add fuel when the machine is
operating or still hot.
AVERTISSEMENT: Risque
d'incendie. Ne pas ajouter de
carburant pendant que la
machine fonctionner ou est
encore chaude.
11. Attached pressure washer with
a spray gun should not be operated with the spray
gun in the off position for extended periods of time
as this may cause damage to the pump. Check to
make sure burner shuts off when spray gun trigger
is closed.
WARNING: Protect from freezing.
AVERTISSEMENT: Protéger la
machine contre le gel.
12. To prevent a serious injury, make certain quick
coupler on discharge hose has locked before using
pressure washer.
13. Do not allow acids, caustic or abrasive fluids to
pass through the pump.
14. Inlet water must be from a cold, fresh, city water
supply.
15. Do not allow CHILDREN to operate the pressure
washer at any time. THIS MACHINE MUST BE
ATTENDED DURING OPERATION.
16. The best insurance against an accident is
precaution, and knowledge of the machine.
17. Do not operate this product when fatigued or under
the influence of alcohol or drugs. Keep operating
We will not be liable for any changes made to our
standard machines, or any components not
purchased from us.
18. Do not overreach or stand on unstable support.
Keep good footing and balance at all times.
19. Follow the maintenance instructions specified in
the manual.
WARNING
PROCTECT FROM
FREEZING
WARNING
RISK OF FIRE.
DO NOT ADD FUEL
WHEN OPERATING
MACHINE.
WARNING
HIGH PRESSURE
STREAM CAN PIERCE
SKIN AND TISSUES.
WARNING
PROTECTIVE
EYE WEAR AND
CLOTHING
MUST BE WORN.
9450 / 9460 Operators Manual - Oil Fired 8.914-364.0 - G
DANGER
RISK OF
ASPHYXIATION.
USE THIS PRODUCT
ONLY IN A WELL
VENTILATED AREA.

8
Safety
21. When making repairs disconnect from electrical
source.
22. Turn burner off and open spray gun to allow water
to flow and cool coil to 100° before turning machine
off.
23. Before disconnecting high pressure hose from
9450 or 9460 water outlet, open spray gun to
relieve back pressure in hose.
CAUTION: Hot discharge fluid. Do
not touch or direct discharge
stream at persons or animals.
AVERTISSEMENT: Liquide de
décharge chaud. Ne pas toucher
ou décharger directement le jet
vers des personnes ou des
animaux, car cela risquerait de
causer des blessures graves ou
même la mort.
CAUTION: This machine produces hot water and
must have insulated components attached to
protect the operator.
AVERTISSEMENT: Cette machine produit de l'eau
chaude et doit comporter des composants isolés
attachés pour protéger l'opérateur.
WARNING: If connection is made
to potable water supply, a back
flow device must be provided.
AVERTISSEMENT: Si une
connexion est établie avec un
approvisionnement en eau
potable, un dispositif de
protection contre le retour d'eau
doit être fourni.
WARNING: Do not spray machine
or any people, animals or elec-
trical parts.
AVERTISSEMENT: Ne pas
vaporiser sur la machine ou les
gens, les animaux ou les pièces
électriques.
Follow the maintenance instructions
specified in the manual.
9450 / 9460 Operators Manual - Oil Fired 8.914-364.0 - G
CAUTION
HOT DISCHARGE FLUID:
DO NOT TOUCH OR
DIRECT DISCHARGE
STEAM AT PERSONS
OR ANIMALS.
WARNING
DO NOT SPRAY
MACHINE OR ANY
PEOPLE, ANIMALS OR
ELECTRICAL PARTS.
WARNING
IF CONNECTED
TO A POTABLE
WATER SUPPLY,
PROTECT AGAINST
BACKFLOW.

9
Notes
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10
Operations
Technical Specifications
Model # Maximum Inlet
Pressure Burner Type Burner Fuel Pressure Machine Voltage
Total Machine
Amperage
9450 3200 PSI Oil Fired 550,872
BTU/Hr. In NOT TO EXCEED 200 PSI 120V 8 Amps
9460 3200 PSI Oil Fired 720,603
BTU/Hr. In NOT TO EXCEED 200 PSI 120V 8 Amps
Model # Machine
Weight
Shipping
Weight
Exhaust
Stacks Size Machine Dimensions
9450 495 Lbs 525 Lbs 10” L 32.5” X W 25” X H 50.5”
9460 865 Lbs 920 Lbs 12” L 40.5” X W 32” X H 65”
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11
Operations
Component Identification
9450 / 9460 Operators Manual - Oil Fired 8.914-364.0 - G
Burner
Exhaust Vent
For
Detail See
Control
Box Illus.
Relief Valve
High Pressure
Outlet
Burner Switch
Fuel Supply
Inlet
Fresh
Water
Inlet
Flow Switch
Power Cord

12
Operations
Installation
Place machine in a convenient location providing
ample support, draining and room for maintenance.
Location
The location should protect the machine from
damaging environmental conditions such as wind, rain,
and freezing temperatures.
These machines are designed for indoor
use. They must be stored indoors when
not in use.
1. The machine should be run on a level surface
where it is not readily influenced by outside
sources such as strong winds, freezing tempera-
tures, rain, etc. The unit should be located to allow
accessibility for refilling of fuel, adjustments and
maintenance. Normal precautions should be taken
by the operator of the unit to prevent excess
moisture from reaching the power unit or electrical
controls.
2. It is recommended that a partition be made
between the wash area and the machine to
prevent direct water spray from coming in contact
with the machine. Excess moisture reaching any
electric components or electrical controls will
reduce machine life and may cause electrical
shorts.
3. During installation of the machine, beware of
poorly ventilated locations or areas where exhaust
fans may cause an insufficient supply of oxygen.
Sufficient combustion can only be obtained when
there is a sufficient supply of oxygen available for
the amount of fuel being burned.
Electrical
This machine, when installed, must be electrically
grounded in accordance to local codes. Check for
proper power supply using a volt meter.
CAUTION: Use copper conductors only.
ATTENTION: Utiliser des conducteurs en cuivre
seulement.
Placement
Install this machine about 2 feet from wall to provide
adequate ventilation and servicing space. This
equipment incorporates parts such as snap switches or
similar parts that tend to produce arcs or sparks. There-
fore, when located in a garage, it should be in a room or
enclosure provided for the purpose or should be
installed 18” (457)mm) or more above the floor.
Water Source
The water source for the machine should be supplied
by a 5/8" I.D. garden hose with a city water pressure of
not less than 30 psi. If the water supply is inadequate,
or if the garden hose is kinked, the attached pressure
washer will run very rough and the burner will not fire.
Connection
Connect the wand, nozzle, hose and spray gun (where
applicable). On pipe thread connections, use teflon
tape to avoid water leaks.
(See Component Identification.)
Venting
Adding exhaust vent pipe to your oil fired burner is not
recommended. It restricts air flow, causing carbon
build-up, which affects the operation, and increases
maintenance on the coil. If a stack must be used,
refrain from using 90° bends. If the pipe can not go
straight up then use only 45° bends and go to the next
size pipe. The overall pipe length must not exceed 6
feet in length.
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13
Operations
Operation Instructions
STEP 1: Review installation
instructions prior to connecting
water supply and checking fuel
tank and pump oil level on both
machines.
STEP 4: Attach high pressure
wand to spray gun of connected
pressure washer (Not Included).
STEP 2: Connect high pressure
hose from pressure washer
(not included) to burner module.
STEP 5: Connect the power cords
into proper electrical outlet
(See Serial Plate).
STEP 3: Connect high pressure
hose from pressure washer when
connecting to burner module
outlet.
STEP 6: Turn on burner switch.
Pilot ignition will begin to spark.
Confirm pilot light ignition, if unsuc-
cessful, turn off switch and turn on
again. If pilot continues to spark,
but not light, consult trouble-
shooting guide.
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14
Operations
Detergents & General Cleaning
Techniques
Refer to operation manual of machine that is to be
connected to the oil fired heating module for instruc-
tions on applying detergent. Follow instructions when
using detergent injectors from the supplier of the
injector.
Pre-rinse cleaning surface with fresh water. Place
detergent suction tube directly into cleaning solution
and apply to surface at low pressure (for best results,
limit your work area to sections approximately 6 feet
square and always apply detergent from bottom to top).
Allow detergent to remain on surface 1-3 minutes. Do
not allow detergent to dry on surface. If surface
appears to be drying, simply wet down surface with
fresh water. If needed, use brush to remove stubborn
dirt. Rinse at high pressure from top to bottom in an
even sweeping motion, keeping the spray nozzle
approximately 1 foot from cleaning surface. Use over-
lapping strokes as you clean and rinse any surface. For
best surface cleaning action spray at a slight angle.
Recommendations
• Before cleaning any surface, an inconspicuous
area should be cleaned to test spray pattern
and distance for maximum cleaning results.
• If painted surfaces are peeling or chipping, use
extreme caution as pressure washer may
remove the loose paint from the surface.
• Keep the spray nozzle a safe distance from the
surface you plan to clean. High pressure wash
a small area, then check the surface for
damage. If no damage is found, continue to
pressure washing.
CAUTION - Never use:
• Bleach, chlorine products and other corrosive
chemicals
• Liquids containing solvents (i.e., paint thinner,
gasoline, oils, etc.)
• Tri-sodium phosphate products
• Ammonia or Acid-based products
These chemicals will harm the machine and will
damage the surface being cleaned.
ATTENTION: Ne jamais utiliser:
• Eau de Javel, produits à base de chlore et
autres produits chimiques corrosifs
• Liquides contenant des solvants (c.-à-d. diluant
à peinture, essence, huiles, etc.)
• Produits à base de tripolyphosphate de sodium
• Ammoniac ou produits à base d'acide
Ces produits chimiques endommageront la machine et
endommageront la surface étant nettoyée.
Rinsing
It will take a few seconds for the detergent to clear.
Apply safety latch to spray gun. Select and install
desired high pressure nozzle.
NOTE: You can also stop detergent from flowing by
removing detergent siphon tube from bottle.
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15
Operations
Shutting Down & Clean Up
STEP 1: To clean detergent from
hose and wand, insert end of
detergent hose in clean bucket of
water and run for a few minutes
until steady stream of clean water
is evident.
STEP 4: Open spray gun to relieve
remaining pressure.
STEP 2: Turn Burner Switch “Off”
and continue spraying water until
temperature reaches 100°.
STEP 3: Turn water off.
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16
Maintenance
Preventative Maintenance
1. Use clean fuel - kerosene, No. 1 home heating fuel
or diesel. Clean or replace fuel filter every 100
hours of operation. Avoid water contaminated fuel
as it will seize up the fuel pump. De-soot coils
monthly. Use an additive if diesel is being used.
2. Check to see that the attached pressure washer
water pump is properly lubricated.
3. Follow Winterizing Procedures to prevent freeze
damage to pump and coils.
4. Always neutralize and flush chemical from system
after use.
5. If water is known to be high in mineral content, use
a water softener on your water system, or de-scale
as needed.
6. Do not allow acidic, caustic or abrasive fluids to be
pumped through system.
7. Always use high grade quality cleaning products.
8. Never run attached pressure washer pump dry for
extended periods of time.
9. If machine is operated with smoky or eye burning
exhaust, coils will soot up, not letting water reach
maximum operating temperature. (See section on
Air Adjustments).
10. Never allow water to be sprayed on or near the
motor or burner assembly or any electrical compo-
nent.
11. Delime coils per instructions.
It is advisable, periodically, to visually inspect the
burner. Check air inlet to make sure it is not clogged or
blocked. Wipe off any oil spills and keep this equipment
clean and dry.
The areas around the washer should be kept clean and
free of combustible materials, gasoline and other
flammable vapors and liquids.
The flow of combustion and ventilating air to the burner
must not be blocked or obstructed in any manner.
Maintenance And Service
Winterizing Procedure
Damage due to freezing is not covered by warranty.
Adhere to the following cold weather procedures
whenever the washer must be stored or operated
outdoors under freezing conditions.
During winter months, when temperatures drop below
32°F, protecting your machine against freezing is
necessary. Store the machine in a heated room. If this
is not possible, use compressed air to blow all water
out of the system.
High Limit Thermostat
For safety, each machine is equipped with a high limit
control switch. In the event the temperature of the water
should exceed its operating temperature the high limit
control will turn the burner off until the water cools.
Cleaning of Coils
In alkaline water areas, lime deposits can accumulate
rapidly inside the coil pipes. This growth is increased by
the extreme heat build up in the coil. The best preven-
tion for liming conditions is to use high quality cleaning
chemicals. In areas where alkaline water is an extreme
problem, periodic use of Deliming Powder will remove
lime and other deposits before coil becomes plugged.
Deliming Coils
Periodic flushing of coils or optional float tank is
recommended.
Step 1 Fill a container or float tank with 4 gallons of
water, then add 1 lb. of deliming powder. Mix thor-
oughly. Verify mixing ratio on deliming powder package.
Step 2 Remove nozzle from wand assembly and put
spray gun and wand assembly into float tank. Attach a
nylon stocking to the end of the wand to collect debris.
Step 3 Attach a short section (3-5 ft.) of garden hose to
the attached pressure washer to siphon solution from
an elevated container. Turn attached pressure washer
switch on, allowing solution to be pumped through coils
back into the container. Solution should be allowed to
circulate 2-4 hours.
Step 4 After circulating solution flush entire system with
fresh water. Reinstall high pressure nozzle into wand.
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17
Maintenance
Removal of Soot and Heating Coil
In the heating process, fuel residue in the form of soot
deposits may develop between the heating coil pipe
and block air flow which will affect burner combustion.
When soot has been detected on visual observation,
the soot on the coil must be washed off after following
the coil removal steps.
Relief Valve
WARNING: The relief valve on this pressure washer
has been factory set and sealed and is a field
nonadjustable part. Tampering with the factory
setting may cause personal injury and/or property
damage and will void the manufacturer warranty.
For replacement parts refer to exploded views.
AVERTISSEMENT: La soupape de décharge sur
cette laveuse à pression a été réglée en usine, puis
scellée, et est une pièce non réglable. L'altération
du paramètre de l'usine pourrait causer des lésions
corporelles et/ou des dommages à la propriété, et
annulera la garantie du fabricant. Pour des pièces
de rechange, se référer aux vues éclatées.
This safety valve must be inspected and tested
annually.
Fuel
Use clean fuel oil that is not contaminated with water
and debris. Replace fuel filter and drain tank every 100
hours of operation.
Use No. 1 or No. 2
Heating Oil (ASTM
D306) only. NEVER
use gasoline in your
burner tank. Gasoline
is more combustible
than fuel oil and could
result in a serious
explosion. NEVER use
crankcase or waste oil
in your burner. Fuel
unit malfunction could result from contamination.
Ignition Circuit
Periodically inspect wires, spring contact and elec-
trodes for condition, security and proper spacing.
Transformer test:
(CAUTION 10,000 VOLTS) use defect free insulated
screwdriver and keep fingers off blade! Lay blade
across one contact: OK if arc will span 1/2" between
end of blade and other contact.
Electrode Setting
Gun Setting Instructions
(For EHASR Only)
SR-Series gage KNA Part
Number 8.717-379.
Burner Nozzle
Keep the tip free of surface deposits by wiping it with a
clean, solvent-saturated cloth, being careful not to plug
or enlarge the nozzle. For maximum efficiency, replace
the nozzle each season.
9450 / 9460 Operators Manual - Oil Fired 8.914-364.0 - G

18
Maintenance
Fuel Control System
The 9450 and 9460 both utilize a fuel solenoid valve
located on the fuel pump to control the flow of fuel to
the combustion chamber. This solenoid, which is
normally closed, is activated by a flow switch when
water is flowing through it. When an operator releases
the trigger on the spray gun, the flow of water through
the flow switch stops, turning off the current to the fuel
solenoid. The solenoid then closes, shutting off the
supply of fuel to the combustion chamber. Controlling
the flow of fuel in this way gives an instantaneous burn
or no burn situation, thereby eliminating high and low
water temperatures, and combustion smoke normally
associated with machines incorporating a spray gun.
Periodic inspection is recommended to insure that the
fuel solenoid valve functions properly. This can be done
by operating the machine and checking to see that
when the trigger on the spray gun is in the off position,
the burner is not firing.
Fuel Pressure Adjustment
To adjust fuel pressure, First install a pressure gage
into the port just after the pump fuel exit. Turn the
adjusting screw (located at the regulator port)
clockwise to increase, and counterclockwise to
decrease. Do not exceed 200 psi or lower the pressure
below 130 PSI, when checked at the post-pump
pressure port.
The fuel pressure may need to be adjusted due to
altitude. For every 500 ft altitude above sea level, the
boiling point of water goes down 1 °F. At high altitude
environments, this boiling point change may require the
heat input to be lowered so the water input does not
turn to steam earlier than at the factory settings and
activate the pressure sensors and pressure relief
equipment when the unit is operated and much higher
altitudes from factory settings or local dealer site
settings. Check with your dealer before making local
site fuel pressure adjustments.
Also, as ambient temperature changes seasonally, the
fuel temperature in the feed tank and air temperature
inlet can impact fuel flow. In more extreme tempera-
tures, this local-site adjustment may also require
different fuel nozzles for fuel inlet temperatures that are
at seasonal extremes (higher or lower) in locations
where the temperature changes are beyond moderate
temperatures of between 40°F and 90°F. Colder
temperatures will make for a thicker flow and less fine a
fuel spray while hotter temperatures will make for a
thinner flow a more fine spray with the same nozzle.
Consider alternate nozzle configurations from the
baseline factory-supplied nozzle for operating in such
temperature extremes if performance is not meeting
needs with air band and fuel pressure settings alone.
NOTE: When changing fuel pump, a by-pass plug
must be installed in return line port or fuel pump will
not prime.
Burner Air Adjustment
The oil burner on this machine is preset for operation at
altitudes below 500 feet. If operated at higher altitudes,
it may be necessary to adjust the air band for a #1 or #2
smoke spot on the Bacharach scale.
To adjust, start machine and turn burner ON. Loosen
two locking screws found on the air band and close air
band until black smoke appears from burner exhaust
vent. Note air band position. Next, slowly open the air
band until white smoke just starts to appear. Turn air
band halfway back to the previously noted position.
Tighten locking screws.
For higher altitudes, the air band opening may need to
be increased; for lower altitude, the air band may need
to be decreased.
For higher humidity, the air band opening may need to
be increased; for lower relative humidity, the air band
may need to be decreased.
For higher ambient temperatures the air band opening
may need to be increased; for lower ambient tempera-
tures, the air band opening may need to be decreased.
Adjust to your operating location’s environment as-
needed for best smoke spot and performance
compliant with local, state, and federal regulations.
9450 / 9460 Operators Manual - Oil Fired 8.914-364.0 - G

19
Maintenance
Maintenance Schedule
This Burner Module was produced with the best available materials and quality craftsmanship. However, you as the
owner have certain responsibilities for the correct care of the equipment. Attention to regular preventative mainte-
nance procedures will assist in preserving the performance of your equipment. Contact your dealer for mainte-
nance. Regular preventative maintenance will add many hours to the life of your pressure washer. Perform
maintenance more often under severe conditions.
Follow operators manual from the pressure washer manufacture that is connected to the Burner Module.
Oil Change Record
9450 / 9460 Operators Manual - Oil Fired 8.914-364.0 - G
MAINTENANCE SCHEDULE
Remove Burner Soot From Heating Coil Annually
Descale Coil Annually - (more often if required)
Replace Quick Connects Annually
Clean Water and Detergent Screen/Filter Weekly
Clean Float/Supply Tank Every 6 months
Replace HP Hose If there is any sign of wear
Grease Motor Every 10,000 hours
Check Burner Pilot Jets Annually
Pressure Relief Valve Annually
Date Oil Changed
Month/Day/Year
Estimated Operating
Hours Since Last Oil
Change

20
Maintenance
Troubleshooting
PROBLEM POSSIBLE CAUSE SOLUTION
BURNER
WILL
NOT
LIGHT
Flex coupling slipping on fuel
pump shaft or burner motor shaft Replace if needed.
On-Off switch defective Check for electrical current reaching burner assembly
with burner switch on.
Heavy sooting on coil and burner
can cause interruption of air flow
and shorting of electrodes
Clean as required.
Improper electrode setting Check and reset according to diagram in Operator's
Manual.
Fuel not reaching combustion
chamber
Check fuel pump for proper flow.
Check solenoid flow switch on machines with spray
gun control, for proper on-off fuel flow control.
Clogged burner nozzle Clean as required.
Thermostat faulty or slow engine
speed Increase engine RPM to increase voltage.
Flow switch malfunction Remove, test for continuity and replace as needed.
Flow solenoid malfunction Replace if needed.
Disconnected or short in electrical
wiring
All wire contacts should be clean and tight. No breaks
in wire.
Little or no fuel Fill tank with fuel.
Improper fuel or water in fuel Drain fuel tank and fill with proper fuel.
Clogged fuel line Clean or replace.
Plugged fuel filter Replace as needed.
Misadjusted burner air bands Readjust air bands for clean burn.
Little or no fuel pressure from fuel
pump
Increase fuel pressure to specification and/or replace
fuel pump. Test with pressure gauge.
Faulty burner transformer Test transformer for proper arc between contacts.
Replace as needed.
MACHINE
SMOKES
WHILE
BURNER UNIT
IS RUNNING
OR
UNIT SMOKES AT
COLD-START
ONLY WHEN
BURNER
IS OFF
Improper fuel or water in fuel Drain tank and replace contaminated fuel
Improper air adjustment Readjust air bands on burner assembly
Fuel pressure is low <140 psi for
burner Adjust fuel pump pressure to specifications
Burner nozzle is plugged or dirty Replace nozzle. Check parts breakdown
for nozzle size
Burner nozzle spray pattern is faulty Replace nozzle. Check parts breakdown
for nozzle size
Heavy accumulation of soot on coils
and burner assembly
Remove coils and burner assembly,
clean thoroughly Call local dealer
Misaligned electrode setting Realign electrodes to specifications
Obstruction in smoke stack Check for insulation blockage or other
foreign objects
Low engine RPM Increase RPM to correct specs. See serial plate
Improper burner nozzle See exploded view parts list
9450 / 9460 Operators Manual - Oil Fired 8.914-364.0 - G