ULTIMATE WASHER ES320AIR User manual

AIR DRIVEN
SHAKER WASHER
OOPERATORS MANUAL
DIRECT DRIVE
PRESSURE WASHER
Once the unit has been removed from the box, immediately write in the
serial number of your unit in the space provided below.
SERIAL NUMBER_________________________________
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2
TABLE OF CONTENTS
INTRODUCTION .............................................................................................................3
IMPORTANT SAFETY WARNINGS............................................................................. 4-7
MOTOR PRECAUTIONS .............................................................................................................................4
SPRAY PRECAUTIONS................................................................................................................................5
DETERGENT CLEANING PRECAUTIONS ...................................................................................................6
MISCELLANEOUS SAFETY PRECAUTIONS ...............................................................................................6
ADJUSTMENT PRECAUTIONS....................................................................................................................7
FEATURES DRAWING ....................................................................................................8
SAFETY DECALS ............................................................................................................9
INSTALLATION & PREPARATION .......................................................................... 10-13
ATTIRE .......................................................................................................................................................10
SETUP .......................................................................................................................................................10
NOZZLE REVIEW .......................................................................................................................................11
NOZZLE CONNECTION ............................................................................................................................. 11
WATER SUPPLY .........................................................................................................................................12
UNLOADER ................................................................................................................................................12
THERMAL RELIEF VALVE ..........................................................................................................................12
PRE-START INSPECTION PROCEDURES.................................................................................................13
OPERATING INSTRUCTIONS ................................................................................ 14-15
PRIMING THE PUMP .................................................................................................................................14
START-UP...................................................................................................................................................14
CLEANING WITH DETERGENTS ............................................................................................................... 15
SHUTDOWN...............................................................................................................................................15
STORAGE & MAINTENANCE................................................................................. 16-17
SPECIFIC MAINTENANCE ........................................................................................................................16
WINTERIZING.............................................................................................................................................17
TROUBLESHOOTING ...................................................................................................18
STATEMENT OF WARRANTY ......................................................................................19
Warning: This product contains lead, a
chemical known to the State of California
to cause birth defects or other reproductive
harm.
Wash your hands after handling this product.
PUMP BREAKDOWN ............................................................................................... 20-21
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3
INTRODUCTION
Congratulations on the purchase of your air driven pressure washer! You can be assured your new
pressure washer was constructed with the highest level of precision and accuracy. Each component has
been rigorously tested by technicians to ensure the quality, endurance and performance of this unit.
This operator’s manual was compiled for your benefit. By reading and following the simple safety,
installation, operation, maintenance and troubleshooting steps described in this manual, you will receive
years of trouble free operation from your pressure washer. The contents of this manual are based on the
latest product information available at the time of publication. CSE reserves the right to make changes
in price, color, materials, equipment, specifications or models at any time without notice.
!IMPORTANT !
THESE PARAGRAPHS ARE SURROUNDED BY A “SAFETY ALERT BOX”. THIS BOX IS USED
TO DESIGNATE AND EMPHASIZE SAFETY WARNINGS THAT MUST BE FOLLOWED
WHEN OPERATING THIS PRESSURE WASHER. ACCOMPANYING THE SAFETY
WARNINGS ARE “SIGNAL WORDS” WHICH DESIGNATE THE DEGREE OR LEVEL OF HAZARD
SERIOUSNESS. THE “SIGNAL WORDS” USED IN THIS MANUAL ARE AS FOLLOWS:
DANGER: INDICATES AN IMMINENTLY HAZARDOUS SITUATION WHICH, IF NOT AVOIDED, WILL
RESULT IN DEATH OR SERIOUS INJURY.
WARNING: INDICATES A POTENTIALLY HAZARDOUS SITUATION WHICH, IF NOT AVOIDED, COULD
RESULT IN DEATH OR SERIOUS INJURY.
CAUTION: INDICATES A POTENTIALLY HAZARDOUS SITUATION WHICH, IF NOT AVOIDED MAY
RESULT IN MINOR OR MODERATE INJURY.
THE SYMBOLS BELOW THIS PARAGRAPH ARE “SAFETY ALERT SYMBOLS”. THESE SYMBOLS ARE
USED TO CALL ATTENTION TO ITEMS OR PROCEDURES THAT COULD BE DANGEROUS TO YOU
OR OTHER PERSONS USING THIS EQUIPMENT.
ALWAYS PROVIDE A COPY OF THIS MANUAL TO ANYONE USING THIS EQUIPMENT. READ ALL
INSTRUCTIONS BEFORE OPERATING THIS PRESSURE WASHER AND ESPECIALLY POINT
OUT THE “SAFETY WARNINGS” TO PREVENT THE POSSIBILITY OF PERSONAL INJURY
TO THE OPERATOR.
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4
Your safety and the safety of others is extremely important.
We have provided many important safety messages in this
manual and on your product. Always read and obey safety
messages.
This is the safety alert symbol. This symbol alerts
you to hazards that can kill or hurt you and others.
The safety alert symbol and the words “DANGER”
and “WARNING” will preceed all safety messages.
These words mean:
mDANGER
You will be killed or seriously injured if you don’t follow
instructions.
mWARNING
You can be killed or seriously injured if you don’t follow
instructions.
All safety messages will identify the hazard, tell you how to
reduce the chance of injury, and tell you what can happen if
the safety instructions are not followed.
CODE SYMBOLS
Hazard. Possible consequences: death or severe
injuries
Hazardous Situation. Possible consequences: slight
or mild injuries
Dangerous Situation. Possible consequences:
damage to the drive or the environment
Important instructions on protection against
explosion
Improper environment, installation and operation can result
in severe personal injury and/or damage to property.
Qualified personnel must perform all work to assemble,
install, operate, maintain and repair air motor.
Qualified personnel must follow:
• These instructions and the warning and information labels on the
motor.
• All other drive conguration documents, startup instructions and
circuit diagrams.
• The system specic legal regulations and requirements.
• The current applicable national and regional specications
regarding explosion protection, safety and accident prevention.
Complete the following checklist prior to starting
installation in a hazardous area. All actions must be
completed in accordance with Directive 2014/34/EU.
Checklist for installation in hazardous areas:
______ Read air motor label to check that motor has been
designed for use in a hazardous application:
• Haza dous zone
• Haza dous category
• Equipment g oup
• emperature class
• Maximum surface temperatu es
Example:
Model designation: 1UP-NRV-10
Year manufactured: 2003
II 2GD
Ex h IIC T4 Gb
Ex IIIC T135°C Db
Benton Harbor, MI USA
Telephone: [phone]
* Legend
II: Equipment group II
2: Equipment category 2
G: Gas atmospheres
D: Dust atmospheres
b: EPL b.
Max. surface temp. 275ºF/135ºC
Ambient range (Ta) +1Cº to +40ºC (34ºF/104ºF)
______ Check the site environment for potentially explosive oils,
acids, gases, vapors or radiation
______ Check the ambient temperature of the site and the
ability to maintain proper ambient temperature.
Ambient range:
Non-hazardous conditions: 34ºF/1ºC to 250ºF/121ºC
Hazardous conditions: 34ºF/1ºC to 104ºF/40ºC
______ Check the site to make sure that the air motor will be
adequately ventilated and that there is no external heat
input (e.g. couplings). The cooling air may not exceed
104ºF/40ºC.
______ Check that products to be driven by the air motor meet
ATEX approval.
______ Check that the air motor is not damaged.
INSTALLATION
Correct installation is your responsibility. Make sure
you have the proper installation conditions.
m WARNING
Injury Hazard
Install proper guards around output shaft as needed.
Air stream from product may contain solid or liquid materi-
als that can result in eye or skin damage.
Wear eye protection when installing this product.
Failure to follow these instructions can result in serious
injury or property damage.
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Mounting
This product can be installed in any orientation. Mount the motor to
a solid metal base plate that is mounted to a stable, rigid operating
surface. Use shock mounts to reduce noise and vibration. Install a
pressure regulator or simple shut-off valve to control motor.
Connection
Check the direction of the motor airow. A single rotation motor
will operate properly only in one direction. Single rotation motors
require a sound absorber to be connected to the air port. Remove
the plastic shipping plugs from the ports. Save plugs for future use
during shutdown.
Install a 5-micron lter in the air line before the connection to the
motor. Next install an air pressure regulator to control motor speed
and torque.
For lubricated operation: Air motors with an “LL” or “NLP”
designation in the model number can operate with or without
lubrication. For optimal service and life, lubrication is recommended.
An automatic air line lubricator should be installed in the air line as
close as possible and no more than 18 inches (1/2 meter) from the
air motor. Install the lubricator level with or above the air motor so
that the oil mist will blow directly into or fall down into the motor.
Fill the oil reservoir to the proper level with Gast #AD220 or SAE
10W high detergent or non-detergent motor oil. For food processing
applications, use an FDA-approved, food-grade lubricant. Adjust
lubricator to feed 1 drop of oil for every 50 CFM of air while the unit
is running, or 1 drop of oil per continuous minute of run time. Do
Not overfeed oil or exhaust air may become contaminated.
Clean the compressed air connection with low pressure air to
remove any dirt from the line before connecting to the ports.
Use the proper sized fasteners. For the most efcient output and
control of speed, use air lines that are the same size as the motor
inlet port if the connection is less than 7 feet (2 meters). For longer
connections, use the next pipe size larger than the motor intake
port. Connect lines to motor in the proper direction.
A reversible motor will work equally well in both directions. Connect
a 4-way valve with piping to both air ports of motor to make
reversing possible. Connect the sound absorber on the exhaust air
port or valve connection.
Do not add any thrust to the end or side of the shaft when
making connections.
Do not use a hammer on the shaft or connections.
Lubricating the drive shaft will make assembly
easier. Use a puller for removal of pulleys,
couplings and pinions on the motor shaft. Check
that the tension on the belt pulley matches the
manufacturer’s specifications. Do not exceed
the maximum radial and axial forces on the
shaft. If the motor shaft is connected to the part
to be driven without a coupling, check that the
radial offset and axial force effect will not cause
problems.
Use only belts with < 109 electrical leakage
resistance to prevent static electrical problems.
Ground the motor.
Accessories
A mufer is shipped with the air motor (except 16AM) but is not
installed. Consult your Gast Distributor/Representative for additional
lter recommendations. Install a moisture trap and 5 micron lter in
the air line ahead of motor.
Air consumption data at various speeds and pressures are available
from your Gast Distributor/Representative or the factory.
OPERATION
m WARNING
Injury Hazard
Air stream from product may contain solid or liquid materi-
al that can result in eye or skin damage.
Do Not use cumbustible gases to drive this motor.
Wear hearing protection. Sound level from motor may
exceed 85 db(A).
Failure to follow these instructions can result in eye injury
or other serious injury.
Check all connections before starting motor. It is your
responsibility to operate this product at recommended
speeds, loads and room ambient temperatures. Do not run
the motor at high speeds with no load. This will result in
excessive internal heat that may cause motor damage.
The starting torque is less than the running torque. The starting
torque will vary depending upon the position of the vanes when
stopped in relation to the air intake port.
Use a pressure regulator and/or simple shut-off valve to regulate
the motor’s speed and torque. This will provide the required power
and will conserve air. Open the air supply valve to the motor. Set
the pressure or ow rate to the required speed or torque. Adjust the
lubricator to feed one drop of oil for every 50-75 CFM (1.5-2 M3per
minute) of air moving through motor. Check the oil level daily. The
gear reducer does not need lubrication.
Revision 11/3/2021 5

Operate the motor for approximately 2 hours at
the maximum desired load. Measure the surface
temperature of the motor on the casting opposite
the pipe ports. The maximum surface temperature
listed on the motor is for normal environmental
and installation conditions. For most air motors,
the maximum surface temperature should not
exceed 275ºF/135ºC. Do not continue to operate
the motor if the measured surface temperature
exceeds temperature listed on the motor. If your
measured temperature does exceed listed value,
consult with your Gast Distributor/Representative
for a recommendation.
MAINTENANCE
m WARNING
Injury Hazard
Disconnect air supply and vent all air lines.
Wear eye protection when flushing this product.
Air stream from product may contain solid or liquid materi-
al that can result in eye or skin damage.
Flush this product in a well ventilated area.
Do Not use kerosene or other combustible solvents to
flush this product.
Failure to follow these instructions can result in eye injury
or other serious injury.
It is your responsibility to regularly inspect and make
necessary repairs to this product in order to maintain proper
operation.
For Lubricated Operation
Use Gast #AD220 or a detergent SAE #10 automotive engine oil for
lubricating. Lubricating is necessary to prevent rust on all moving
parts. Excessive moisture in air line may cause rust or ice to form in
the mufer when air expands as it passes through the motor. Install
a moisture separator in the air line and an after cooler between
compressor and air receiver to help prevent moisture problems.
Manual Lubrication
Shut the air motor down and oil after every 8 hours of operation.
Add 10-20 drops of oil to the air motor intake port.
Automatic Lubrication
Adjust inline oiler to feed 1 drop of oil per minute for high speed
or continuous duty usage. Do not overfeed oil or exhaust air may
become contaminated. Check intake and exhaust lters after rst
500 hours of operation. Clean lters and determine how frequently
lters should be checked during future operation. This one
procedure will help assure the motor’s performance and service life.
Flushing
Flushing this product to remove excessive dirt, foreign particles,
moisture or oil that occurs in the operating environment will help to
maintain proper vane performance. Flush the motor if it is operating
slowly or inefciently.
Use only Gast #AH255B Flushing Solvent. DO NOT use
kerosene or ANY other combustible solvents to flush this
product.
1. Disconnect air line and mufer.
2. Add ushing solvent directly into motor. If using liquid solvent,
pour several tablespoons directly into the intake port. If using
Gast #AH255B, spray solvent for 5-10 seconds into intake
port.
3. Rotate the shaft by hand in both directions for a few minutes.
4. You must wear eye protection for this step. Cover exhaust with
a cloth and reconnect the air line.
5. Restart the motor at a low pressure of approximately 10 psi/
0.7 bar until there is no trace of solvent in the exhaust air.
6. Listen for changes in the sound of the motor. If motor sounds
smooth, you are nished. If motor does not sound like it is
running smoothly, installing a service kit will be required (See
“Service Kit Installation”).
Check that all external accessories such as relief valves or
gauges are attached and are not damaged before operating
product.
Cleaning the sound absorber.
1. Remove the sound absorber (for non-lubricated operation,
inspect mufer every 90 days. To avoid excessive clogging of
mufer element, change frequently).
2. Clean the felt lter.
3. You must wear eye protection for this step. For lubricated
operation, add 3-4 drops of oil.
4. Check the air compressor.
5. Listen for changes in the sound of the motor. If motor sounds
smooth, you are nished. If motor does not sound like it running
smoothly, installing a service kit will be required (See “Service
Kit Installation”).
Shutdown.
It is your responsibility to follow proper shutdown procedures
to prevent product damage.
1. Turn off air intake supply.
2. Disconnect air supply and vent all air lines.
3. Disconnect air lines.
4. Remove air motor from connecting machinery.
5. Remove the mufer.
6. Wear eye protection. Keep away from air
stream. Use clean, dry air to remove condensation from the
inlet port of the motor.
7. For lubricated operation, add a small amount of oil into the
intake port. Rotate shaft by hand several times to distribute oil.
8. Plug or cap each port.
9. Coat output shaft with oil or grease.
10. Store motor in a dry environment.
Disposal (Please note current regulations) Parts of the
air motor or air powered gear motor, shafts, cast iron
or aluminum castings, gear wheels as well as rolling
contact bearings may be recycled as scrap metal.
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6

7
SPRAY PRECAUTIONS:
DANGER: RISK OF INJECTION OR SEVERE CUTTING INJURY!
KEEP CLEAR OF NOZZLE! DO NOT DIRECT DISCHARGE
STREAM AT PERSONS OR PETS! ONLY TRAINED OPERATORS
SHOULD USE THIS PRODUCT. WHEN OPERATING THIS UNIT,
BASIC PRECAUTIONS SHOULD ALWAYS BE OBSERVED
INCLUDING THE FOLLOWING:
1. KEEP AWAY FROM THE SPRAY:
B #FDBVTF PG UIF IJHI QSFTTVSF BOE WFMPDJUZ PG UIF TQSBZ æVJET DBO
penetrate the skin, causing serious injury.
b. Never point the gun at yourself or anyone else. Never put your hand,
åOHFSTPSCPEZEJSFDUMZPWFSUIFTQSBZOP[[MF"MXBZTLFFQPQFSBUJOH
area clear of all persons. Use extreme caution when operating near
children.
c. If an accident does occur and the spray appears to have penetrated
the skin, SEEK EMERGENCY MEDICAL CARE. DO NOT TREAT AS
A SIMPLE CUT. If you are using cleaning agents, be prepared to tell
a physician exactly what kind.
2. ALWAYS wear protective goggles when operating the unit to shield the
FZFTGSPNæZJOHEFCSJTBOEEFUFSHFOUT0UIFSQSPUFDUJWFFRVJQNFOUTVDI
as rubber suits, gloves and respirators are advisable, especially when using
cleaning detergents. Use extreme caution when operating near children.
3. Stay alert-watch what you are doing. Do not operate the unit when fatigued
PSVOEFSUIFJOæVFODFPGBMDPIPMPSESVHT
4. NEVER squeeze the trigger unless securely braced. The thrust from the
water traveling through the nozzle may be powerful enough to cause the
operator to lose balance if unprepared. DO NOT overreach or stand on
unstable support. 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.
5. Caution should be used when directing spray toward fragile materials
such as glass. Shattering could result in serious injury.
 "-8":4 IPME PO åSNMZ UP UIF HVOXBOE BTTFNCMZ XIFO TUBSUJOH BOE
operating the unit. Failure to do so can cause the wand to fall and whip
dangerously. 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.
7. DO NOT direct spray on or into electrical installations of any kind! This
includes electrical outlets, light bulbs, fuse boxes, transformers, etc.
Severe electrical shock may occur.
8. Even after you shut off the unit, there is high pressure water left in the
QVNQIPTF BOEHVOVOUJMZPVSFMFBTFJUCZUSJHHFSJOHUIFHVO#FGPSF
removing the spray nozzle or servicing the unit, ALWAYS shut off the unit
and trigger the gun to release trapped pressure.
IMPORTANT SAFETY WARNINGS
Revision 11/3/2021

8
DETERGENT CLEANING PRECAUTIONS:
1. DO NOT use solvents or highly corrosive detergents or acid type cleaners
with this pressure washer.
2. ,/08:063%&5&3(&/54#FQSFQBSFEUPUFMMBQIZTJDJBOFYBDUMZXIBU
you are using in the event of an emergency. Read the Material Safety
Data Sheet (MSDS) provided with your detergent and all detergent labels.
Follow all appropriate instructions regarding preparation use, safety and
transportation. Keep ALL detergents out of the reach of children.
3. DO NOT use this pressure washer to dispense hazardous detergents.
4. DO NOT alter the detergent injection feature in any manner not prescribed
in this manual. Use only genuine replacement parts for necessary
repairs.
MISCELLANEOUS SAFETY PRECAUTIONS:
1.NEVER ALLOW CHILDREN OR ADOLESCENTS TO OPERATE THIS UNIT!
2.Read and follow all handling, operations, maintenance and safety instructions listed in this manual and provide such information to ANYONE who will
be operating this unit.
3.In freezing temperatures, the unit must always be warm enough to ensure there is no ice formation in the pump. DO NOT start this unit if it has been USBOTQPSUFEJOBOPQFOPSVOEFSIFBUFEWFIJDMFXJUIPVUåSTUBMMPXJOHUIF pump to thaw.
4.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 that there is no feedback of the detergents into the water supply. %JSFDUDPOOFDUJPOJTQFSNJUUFEJGBCBDLæPXQSFWFOUFSJTJOTUBMMFE
5.DO NOT allow any part of your body or the high pressure hose to make DPOUBDUXJUIUIFNVGæFS"WPJEESBHHJOHUIFIPTFPWFSBOBCSBTJWFTVSGB
DF such as cement. This causes wear and eventual rupturing.
6.High pressure hoses should be inspected daily for signs of wear. If evidence
of failure exists, promptly replace all suspect hoses to prevent the possibility
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&3 place your hand directly on the leak.
7.DO NOT operate the unit without all protective covers in place.
8.NEVER run the unit with the governor disconnected or operate at excessive
speeds.
9.To reduce the risk of injury, maintain a safe distance for persons while operating this unit. Close supervision is necessary when operating the unit near children.
10.DO NOT leave pressurized unit unattended. Shut off the unit and release trapped pressure before leaving.
11.DO NOT move the unit by pulling on the hose.
IMPORTANT SAFETY WARNINGS
Revision 11/3/2021

9
ADJUSTMENT PRECAUTIONS:
1. NEVER alter or modify the equipment, be sure any accessory items and system components being used will withstand the pressure developed. Use ONLY genuine parts for repair of your pressure washer. Failure to do so can cause hazardous operating conditions and will void warranty.
2. NEVER make adjustments to the machinery while it is connected to a
compressor XJUIPVU GJSTUSFNPWJOHUIF connected air lines 5VSOJOH the
machinery over by hand during adjustment or cleaning might start the
motor and machinery with it, causing serious injury to the operator.
3. Know how to stop the pressure washer and bleed pressures quickly. #FUIPSPVHIMZGBNJMJBSXJUIDPOUSPMT
4. #FGPSFTFSWJDJOHUIFVOJUUVSOUIFVOJUPGGSFMJFWFUIFXBUFSQSFTTVSFBOE allow the unit to cool down. Do not make repairs while unit is running. 4FSWJDFJOBDMFBOESZGMBUBSFB#MPDLUIFXIFFMTUPQSFWFOUUIFVOJU from moving.
5. 'PMMPXUIFNBJOUFOBODFJOTUSVDUJPOTTQFDJGJFEJOUIJTNBOVBM
! SAVE THESE INSTRUCTIONS !
IMPORTANT SAFETY WARNINGS
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INSTALLATION & PREPARATION
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-
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 5IFOP[[MF:&--085IJTJTBDIJTFMJOHOP[[MF5IFTQSBZTIPVME
CFEJSFDUFEBUBBOHMFUPUIFTVSGBDFBOEVTFEMJLFBTDSBQFSUPSFNPWF
paint, grease and dirt. Uses: Surface preparation (removing mildew stains
and paint chips).
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TVJUFEGPSæVTIJOHEJSUNVEBOEHSJNF6TFT8FUTXFFQJOHMFBWFTGSPN
XBMLTDVSCTBOEESJWFXBZTDMFBOJOHTUBCMFæPPSTXBTIJOHTXJNNJOH
pool bottoms, degreasing engines.
 5IFOP[[MF#-"$,5IJTJTBMPXQSFTTVSFEFUFSHFOUBQQMJDBUJPO
nozzle. This broad spray pattern distributes solution over vast areas under
low pressure. Uses: Detergent application, misting or rinsing.
QUICK-CONNECT (Q.C.)
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
NOZZLE CONNECTION:
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right.
2. The nozzle assembly should be disconnected from the gun/wand assembly
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remove the nozzle.
QUICK-CONNECT FITTING
WARNING RISK OF SEVERE
INJURY!
THE TRIGGER GUN SHOULD
ALWAYS BE LOCKED IN THE
OFF POSITION WHEN NOT IN
USE!
Revision 11/3/2021
10

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.
Periodic cleaning of the water strainer will help prevent pump problems.
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pump. This can result in cavitations which will cause premature failure of
pump packings.
a. Using a screw driver, 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: Do not use a non-pressurized water supply (i.e. from a pond or
well) with this unit.
c. Connect the high pressure discharge hose to the water outlet of the
unit.
d. Securely connect the other end of the hose to the gun assembly. (A
wrench may be required on some models.)
e. Connect the wand assembly to the gun/hose assembly.
4. Follow the incoming water requirements listed below:
a. Water pressure must be a minimum of 25 pounds per square inch (PSI)
and a maximum of 100 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
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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 completely turned on.
CHECK WATER INLET STRAINER
INSTALLATION & PREPARATION
UNLOADER:
FACTORY PRESET:
:
The unloader valve on your machine is factory preset and should only be
adjusted by a trained service technician. DO NOT adjust the pressure on
your own!
CAUTION RISK OF UNIT
DAMAGE!
DO NOT OVERTIGHTEN THE UN-
LOADER. BREAKAGE COULD
RESULT IN IMMEDIATE LOSS
OF WATER PRESSURE AND
COSTLY REPAIRS.
Revision 11/3/2021 11

WARNING
THE FOLLOWING PAGES CONTAIN OPERATING AND MAINTENANCE INSTRUCTIONS.
DO NOT ATTEMPT TO OPERATE THIS PRESSUREWASHER UNTIL YOU HAVE READ AND
UNDERSTOOD ALL SAFETY PRECAUTIONS AND INSTRUCTIONS LISTED IN THIS MANUAL.
INCORRECT OPERATION OF THIS UNIT CAN CAUSE SERIOUS INJURY!!
DO NOT ALTER OR MODIFY THIS EQUIPMENT IN ANY MANNER!
THERMAL RELIEF VALVE:
To ensure the water temperature does not exceed acceptable levels, never al-
low the pressure washer to operate in the bypass mode (with the unit running
and the trigger gun closed) for more than three minutes.
A “thermal relief valve” has been added to this unit to protect the pump. It
may begin to open and release water if the water temperature in the pump
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PRE-START INSPECTION PROCEDURES:
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1.Check the oil level in the pump and motor.
2.Inspect the water inlet strainer. Clean or replace if necessary. See “Water Supply”.
3.Check all hose connections to ensure they are securely tightened. See “Water Supply”.
4.Inspect for system fuel leaks. If a fuel leak is found, DO NOT START UNIT!
4FFo'JSF7FOUJMBUJPO1SFDBVUJPOTp#FTVSFUIBUBMMEBNBHFEQBSUTBSF replaced and that the mechanical problems are corrected prior to operation
of the unit. If you require service, contact Customer Service.
5.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 o.JTDFMMBOFPVT4BGFUZ1SFDBVUJPOTp#FTVSFUIBUBMMEBNBHFEQBSUTBSF replaced and that the mechanical problems are corrected prior to operation
of the unit. If you require service, contact Customer Service.
INSTALLATION & PREPARATION
Revision 11/3/2021
12

PRIMING THE PUMP:
1. It is essential to prime the pump on initial start-up and each time the water
supply is disconnected from the unit after initial use.
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the hose, creating tight loops if the hose is not straight.
3. Securely connect the gun assembly to the high pressure hose.
NOTE: The nozzle assembly should NOT be connected to the gun as-
sembly at this time. See “Nozzle Connection”.
3. With the trigger gun locked in the “OFF” position, turn the water supply
completely on. Pointing the gun in a safe direction, unlock the trigger gun
and squeeze the trigger.
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allows the unit to prime and purge any air from the system. The unit is
QSJNFEXIFOXBUFSæPXJTVOJOUFSSVQUFECZBJS
5. Once the unit is primed, release the trigger and lock the gun in the “OFF”
position. Securely connect the nozzle assy. (See “Nozzle Connection”).
DANGER RISK OF
INJECTION CAUSING
SEVERE INJURY!
-KEEP CLEAR OF NOZZLE!
NEVER PLACE HAND OR FIN-
GERS IN FRONT OF NOZZLE!
-DO NOT DIRECT DISCHARGE
STREAM AT PEOPLE OR PETS!
-BE CERTAIN THE NOZZLE IS
SECURELY CONNECTED TO
THE WAND TO PREVENT ACCI-
DENTAL DISCHARGE!
START-UP:
1. Refer to the “Safety Precautions” before starting the unit.
2. Locate the Safety Decals on your unit and heed their warnings.
3. With the gun locked in the “OFF” position, point the trigger gun away from
yourself or anyone else. Ensure the water supply is completely turned on.
4. Disengage the safety lock-off on the gun and squeeze the trigger. Low
QSFTTVSFXBUFSXJMMCFHJOæPXJOHGSPNUIFOP[[MF
 #&$&35"*/UIFUSJHHFSHVOSFNBJOTJOBOPQFOQPTJUJPOXIJMFTUBSUJOHUIF
FOHJOF#SBDFZPVSTFMG BT UIFHVOXJMMLJDLCBDLGSPNUIFIJHIQSFTTVSF created by the pump once the motor has started.
6.Steady the unit during start-up. Slowly apply air flow to the motor, not
to exceed 100 psi / 7 bar.
7.Once the motor has started, perform the following procedures with the gun open:
a.Inspect for system oil leaks and fuel leaks. If an oil leak is found, TURN UNIT OFF IMMEDIATELY! See “Fire & Ventilation Precautions”. #FTVSFUIBUBMMEBNBHFEQBSUTBSFSFQMBDFEBOEUIBUUIFNFDIBOJDBM 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 restarting the unit. See o.JTDFMMBOFPVT4BGFUZ1SFDBVUJPOTp#FTVSFUIBUBMMEBNBHFEQBSUT are replaced and that the mechanical problems are corrected prior to operation of the unit. If you require service, contact Customer Service.
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“OFF” position whenever changing the quick connect nozzles. NEVER
look directly into the nozzle! High pressure water creates a risk of severe
injury!
9. 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 packing seals, resulting in costly
pump repair.
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of spray patterns, there are many cleaning jobs that can be done without
the use of detergents. If a cleaning agent is required, see “Cleaning With
Detergents” for the correct procedures.
CAUTION RISK OF
DAMAGE.
DO NOT ALLOW SPRAY PAT-
TERN TO REMAIN ON A FIXED
AREA FOR AN EXTENDED
PERIOD OF TIME. POSSIBLE
DAMAGE MAY OCCUR TO THE
AREA.
CAUTION RISK OF UNIT
DAMAGE.
BE CERTAIN THE NOZZLE IS
NOT CONNECTED TOT HE UNIT
WHILE PRIMING THE PUMP.
PRIMING ALLOWS MINERAL
DEPOSITS TO BE RELEASED
FROM THE SYSTEM WHICH
WOULD OBSTRUCT OR DAM-
AGE THE NOZZLE ASSEMBLY
RESULTING IN COSTLY RE-
PAIRS.
OPERATING INSTRUCTIONS
Revision 11/3/2021 13

CLEANING WITH DETERGENTS:
1. Refer to “Detergent Cleaning Precautions” pg. 6 before working with
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2. Prepare detergent solution according to label directions. Never pump
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3. Some units are equipped with adjustable detergent knobs. Locate the
clear vinyl hose which leads to the pump head.
a. If your injector is equipped with an adjustment knob on the pump
head, you may adjust the amount of detergent desired by turning the
knob completely counterclockwise to set at the maximum siphon
rate.
b. If your injector is not equipped with an adjustment knob, the
detergent ratio is preset and cannot be adjusted.
4. Immerse the detergent strainer into the detergent solution to allow
detergent to siphon.
5. With the trigger gun locked in the “OFF” position, securely quick-connect
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6. NOTE: This injection system is designed to apply detergents under
low pressure only. It will not allow detergent solutions to be intro-
duced into the system unless the nozzle assembly is in the low
pressure detergent mode.
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few moments a detergent/water mixture will exit the low pressure nozzle.
Start spraying the lower portion of the surface being cleaned and move
up, using long overlapping strokes. Applying from the bottom up helps
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to dry on the surface. (Avoid working on hot surfaces or in direct sunlight
to minimize the chances of the detergent drying, which may result in
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time.
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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.
8. 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.
QUICK CONNECT DETERGENT
SHUTDOWN:
1.Turn air supply “OFF”.
2.Turn the water supply “OFF”.
3.Pointing the gun in a safe direction, trigger gun momentarily to relieve any trapped pressure.
4.Once pressure is relieved, disconnect the nozzle assembly.
5.Disconnect and drain gun, wand and hoses.
6.Wipe unit clean and store with gun, wand and hoses in a safe, non-
freezing area.
OPERATING INSTRUCTIONS
Revision 11/3/2021
14

STORAGE & MAINTENANCE
MOTOR:Add 3-4 drops of lubrication into the intake port. rotate the shaft
several times to distribute oil evenly. Plug or cap intake and discharge ports.
Store in a dry environment to reduce the risk of damage. Following the motor
manufacturer’s recommendations will extend motor work life.
PUMP:5IFQVNQPJMNVTUCFDIBOHFEBGUFSUIFåSTUIPVSTPGPQFSBUJPO Once the initial oil change has been completed, it is recommended the oil be
changed every 3 months or 250 hour intervals. If oil appears dirty or
NJMLZDIBOHFTNBZCFSFRVJSFEBUBHSFBUFSGSFRVFODZ"EEQVNQPJMBOEåMM only to the center of the sight glass (Refer to the parts listing for the correct
pump oil). DO NOT OVERFILL!
NOZZLES:8BUFSæPXUISPVHIUIFTQSBZOP[[MFXJMMFSPEFUIFPSJåDFNBL-
ing it larger, resulting in a pressure loss. Nozzles should be replaced when-
ever pressure is less than 85% of the maximum. The frequency of replace-
ment will depend upon such variables as mineral content in the water and
number of hours the nozzle is used.
QUICK COUPLERS: There is an o-ring seal inside the female quick coupler.
This o-ring will deteriorate or, if the unit is allowed to pump without the high
pressure hose or nozzle attached, the o-ring may be blown out occasionally.
Simply insert a replacement o-ring to correct the leak. (Additional o-rings can
be purchased from your dealer.)
TROUBLESHOOTING GUIDE
Problem
Reason and Remedy for Problem
Low Torque Low Speed Won’t Run Runs Hot
Runs Well
Then Slows
Down
• • • Dirt or foreign material present. Inspect and ush.
• • • Internal rust. Inspect and ush.
• • Low air pressure. Increase pressure.
•Air line too small. Install larger line(s).
• • Restricted exhaust. Inspect and repair.
• • • • Motor is jammed. Have motor serviced.
• • Air source inadequate. Inspect and repair.
• • Air source too far from motor. Recongure setup.
TROUBLESHOOTING GUIDE
Problem
Reason and Remedy for Problem
Low Torque Low Speed Won’t Run Runs Hot
Runs Well
Then Slows
Down
• • • Dirt or foreign material present. Inspect and ush.
• • • Internal rust. Inspect and ush.
• • Low air pressure. Increase pressure.
•Air line too small. Install larger line(s).
• • Restricted exhaust. Inspect and repair.
• • • • Motor is jammed. Have motor serviced.
• • Air source inadequate. Inspect and repair.
• • Air source too far from motor. Recongure setup.
AIR MOTOR TROUBLESHOOTING GUIDE
Problem
Reason and Remedy for Problem
Low Torque Low Speed Won’t Run Runs Hot
Runs Well
Then Slows
Down
• • • Dirt or foreign material present. Inspect and ush.
• • • Internal rust. Inspect and ush.
• • Low air pressure. Increase pressure.
•Air line too small. Install larger line(s).
• • Restricted exhaust. Inspect and repair.
• • • • Motor is jammed. Have motor serviced.
• • Air source inadequate. Inspect and repair.
• • Air source too far from motor. Recongure setup.
Revision 11/3/2021 15

STORAGE & MAINTENANCE
WARNING RISK OF UNIT
BURSTING!
DO NOT STORE/OPERATE UNIT
IN A FREEZING ENVIRONMENT!
WINTERIZING:
For storage and transportation purposes in subfreezing ambient tempera-
tures, it will be necessary to winterize this unit. This unit must be protected
to the lowest incurred temperature for the following reasons:
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may build up in the unit which could cause the unit to burst resulting in
possible serious injury to the operator or bystanders.
2. The pumping system in this unit may be permanently damaged if frozen.
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If you must store your unit in an area where the temperature may fall below
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1. Gather the following items:
a. Two 5 gallon containers.
b. One gallon of antifreeze. (CSE recommends an environmentally
safe antifreeze.)
c. Water supply.
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2. Procedure:
a. To start winterizing, unit must be run and primed according to the
“Start-up Procedures” listed on page 14.
b. After running and priming, shut off the unit and water supply.
c. Relieve system pressure by pointing the trigger gun in a safe direction
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d. Lock the trigger gun in an OFF position and remove the nozzle.
e. In one 5 gallon container, mix the antifreeze and water according to
manufacturer’s recommendations for the temperature to which you are
winterizing.
NOTE: Proper winterizing is based on the recommended manufacturer’s
instructions listed on the “Protection Chart” shown on the back label
of most antifreeze containers.
f. Remove the water supply hose from the unit and attach the 3 foot
hose securely to the inlet connection. Submerge the other end into
the antifreeze solution.
g. Shut off the detergent injector if applicable.
h. Point the wand into the empty container and start the unit.
i. Trigger the gun until the antifreeze begins to exit the wand. Release
the trigger for 3 seconds, then trigger the gun for 3 seconds. Continue
cycling the gun several times until all the antifreeze mixture is siphoned
from the container.
j. Stop the unit.
k. Detach the 3 foot hose from the unit and drain any excess antifreeze
back into the 5 gallon container.
l. Disconnect the hose/gun/wand assembly from the unit and drain any
excess antifreeze back into the 5 gallon container.
m. Store the hose, gun and wand with the unit in a safe, non-freezing area.
n. 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
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c. Disconnect and drain the hose, gun and wand.
d. Start the unit and allow it to run until all the water exits the unit. Once
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NOTE: When using this procedure, caution should be used as ice chips
can form from drops of water which could cause the unit to burst if
starting before completely thawed.
32˚F 0˚C
Revision 11/3/2021
16

PUMP TROUBLESHOOTING
SYMPTOM PROBABLE CAUSE REMEDY
No discharge at nozzle when Inadequate water supply. Ensure hose is 3/4” diameter and
trigger mechanism is squeezed. incoming water supply is turned on.
Kink in water inlet hose. Remove kink.
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Water inlet screen obstructed. Remove screen, clean or replace.
Pump sucking air. (Prime eliminated) Tighten all water intake connections
Eliminate leaks in intake line.
Not in high pressure mode. Insert a high pressure nozzle.
Obstructed or worn spray nozzle. Remove, clean or replace.
Damaged or obstructed valve assy. Remove, inspect, clean or replace.
on pump.
Pump packings worn. Replace packings.
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Water is leaking from the “Heat Water temperature is too high. Do not allow the unit to operate in
Dump Valve” the bypass mode (with trigger gun
closed) for more than 3 minutes.
Defective valve. Replace.
Oil appears milky or foamy. Water in oil. Change pump oil. Fill to proper
level.
Oil leaking from unit. DO NOT USE!!!!! Contact CSE Customer
Service.
Detergent will not siphon into Detergent strainer is not completely Check, submerge if necessary.
Low Pressure Detergent mode. submerged in detergent solution.
Detergent strainer obstructed. Inspect, clean or replace.
Detergent hose cut, obstructed or Inspect, clean or replace.
kinked.
Detergent adjusting knob on pump Open adjusting knob. Refer to
turned to closed position. (If applicable.)“Cleaning with Detergents” pg. 15
/PUJOMPXQSFTTVSFNPEF
Nozzle assembly is plugged.
Too many high pressure hose
extensions attached to the water outlet.
#BMM4QSJOHJO7FOUVSJTUVDL
*OTFSU#-"$,OP[[MF
Clean or replace.
Use one extension maximum.
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container. missing or corroded.
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trigger gun is locked in the “OFF”
position.
Revision 11/3/2021 17

SSTATEMENT OF WARRANTY
The manufacturer of this washer offers the original owner a one (1) year limited warranty. The manufacturer guaran-
tees the air driven cold water pressure washer to be free from defects in materials and/or workmanship. Any
defective parts not subject to normal wear and tear will be repaired or replaced at the manufacturers option during the
warranty period. All warranties will begin from the original date of purchase.
ONE (1) YEAR PARTS WARRANTY
Thirty (30) day warranty on high pressure hose, strainer filter, trigger gun and wand and all other accessories.
WARRANTY DOES NOT COVER:
Normal wear parts: pump packing, pump valves, unloader, detergent valves, o-rings, or spray nozzles.
Parts damaged due to misuse or operation at other than recommended speeds, pressures, temperatures or improp-
er installation.
Parts damage due to misuse or worn because of low temperatures, the use of caustic liquids or by operation in
abrasive or corrosive environments or under conditions causing pump cavitation.
IMPORTANT:
This unit was designed to be operated in a medium duty application only. The use of this washer in any other
applica-tion will void warranty. Failure to follow the recommended operating and maintenance procedures or failure
to use genuine parts also voids the warranty.
GENERAL INFORMATION:
The motor warranty will be handled through the motor factory. The consumer will be responsible to prepay freight if
warranty is to be considered. Parts returned prepaid to our factory or to an Authorized Service Center will be
inspected and replaced free of charge if found to be defective and subject to this warranty. There are no warran-ties
which extend beyond the description on the face hereof. Under no circumstances shall the manufacturer bear
responsibility for loss of the unit, loss of time, inconvenience, consequential damages, pickup or delivery charges.
For service or warranty consideration contact:
CHAPPELL SUPPLY AND EQUIPMENT/ 6509 P.O. BOX 270960 / OKLAHOMA CITY, OK 73137
405-495-1722 / 800-525-4970 / Fax [phone]
Monday - Friday 8:00 a.m. - 5:00 p.m. CST
Revision 11/3/2021
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