ROTARY SURFACE CLEANER
Professional Pressure Washer Accessories
Operation Instruction and Parts List Manual
Size 21 inch / 24 inch
This manual contains:
IMPORTANT WARNINGS and INSTRUCTIONS. READ AND RETAIN FOR REFERENCE
WARNING: To reduce the risk of injury, the user must read and understand the
operators manual before using this product.
SAVE THIS MANUAL FOR FUTURE REFERENCE
VERSION: A+SC21-SC24
TABLE OF CONTENTS
TABLE OF CONTENTS
2 INSTALLATION & PREPARATION
INTRODUCTION
2 CLEAN UP WITH YOUR ROTARY
IMPORTANT
SAFETY WARNINGS
6-7
2 SURFACE CLEANER
7
3-4 OPERATION
FEATURES
5 PRODUCT EXPLODED AND
SPECIFICATIONS
5 PARTS LIST
8
9-11
TROUBLESHOOTING
INTRODUCTION
Congratulations on the purchase of your new Rotary Surface Cleaner! You can be assured this Cleaner
was constructed and designed with quality and performance in mind. Each component has been
rigorously tested to ensure the highest level of acceptance.
Your Rotary Surface Cleaner is equipped with a heavy duty high pressure swivel with the versatility of
using this Cleaner in both cold and hot water applications. Simply connect the Rotary Surface Cleaner
to your pressure washer, pull the trigger and walk behind for fast and efficient cleaning!
This manual was compiled for your benefit. The contents of this manual are based on the latest product
information available at the time of publication. The manufacturer reserves the right to make changes in
price, color, material, equipment, specifications or models at any time without notice.
IMPORTANT
This manual contains information that is important for you to know and understand. This information
relates to protecting YOUR SAFETY and PREVENTING EQUIPMENT PROBLEMS. To help you
recognize this information, we use the symbols below. Please read the manual and pay attention to
these sections.
DANGER indicates a 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.
ALWAYS PROVIDE A COPY OF THIS MANUAL TO ANYONE USING THIS EQUIPMENT. READ
ALL INSTRUCTIONS IN THIS MANUAL AND ANY INSTRUCTIONS SUPPLIED BY
MANUFACTURERS OF SUPPORTING EQUIPMENT BEFORE OPERATING THIS UNIT AND
ESPECIALLY POINT OUT THE "SAFETY WARNINGS" TO PREVENT THE POSSIBILITY OF
PERSONAL INJURY TO THE OPERATOR.
2
12
SAFETY WARNINGS
HAZARD
RISK OF INJECTION OR SEVERE CUTTING INJURY
POTENTIAL CONSEQUENCE
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. Keep hands and feet away from rotating spray arm and high
pressure discharge spray.
- This product is to be used only by trained operators. Always keep operating area
clear of all persons.
- DO NOT allow children to operate this unit.
- 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!
Be prepared to tell a physician exactly what kind of cleaning agents you were using
by reading the Detergent Label and the Material Safety Data Sheet provided with
your detergent.
- 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 of injury
from the high pressure spray. If a hose or fitting is leaking, NEVER PLACE YOUR
HAND DIRECTLY ON THE LEAK.
- Before using rotary surface cleaner, or when quick connecting high pressure hoses,
be certain the "collar" on the female quick connect is locked securely to prevent
accidental discharge and that all quick coupler fittings are secure.
- 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.
- Do not make repairs or adjustments while unit is running.
- Before removing the spray nozzle or servicing the unit, ALWAYS shut off the unit
and trigger the gun to release trapped pressure. (Even after you shut off the unit,
there is high pressure water left in the unit until you release it by triggering the gun).
Allow the unit to cool down and service in a clean, dry, flat area.
- CAUTION: Operating while moving over any raised obstacle will damage surface
cleaner. If rotating spray arm strikes an object, causing a vibration, STOP and
replace spray arm assembly. Continued operation could result in serious injury or
damage to surface cleaner.
HAZARD
RISK OF BURNS
POTENTIAL CONSEQUENCE
Serious injury may occur from touching Hot Surfaces
-The Rotary Surface Cleaner is capable of accepting a maximum permissable rating
of 212°F. Operating temperature under normal operating conditions is 175°.
When using in a hot water application, do not touch or direct discharge stream
at persons. Be cautious of hose fittings as surface temperatures are the same as
the water temperature.
3
HAZARD
RISK OF BODILY INJURY
POTENTIAL CONSEQUENCE
Serious injury or death may occur from detergents contacting or penetrating the skin.
- SEEK EMERGENCY MEDICAL CARE if 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 cleaning agents you were using by reading the Material Safety Data
Sheet provided with your detergent.
- Never use any solvents or highly corrosive detergents or acid type cleaners with
this rotary surface cleaner.
- 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!
POTENTIAL CONSEQUENCE
Serious injury can occur from loose debris being propelled at a high speed
from the spray gun.
- 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—shattering could occur.
POTENTIAL CONSEQUENCE
Injury may occur if the operator loses his balance caused by the thrust of
water travelling through the spray nozzle.
- 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.
- Wet surfaces can be slippery, wear protective foot gear and keep good footing and
balance at all times.
POTENTIAL CONSEQUENCE
Injury may occur from the rotary surface cleaner.
- ALWAYS hold on firmly to the handles of the Rotary Surface Cleaner when
operating the unit. Failure to do so can cause the Cleaner to move dangerously.
To prevent accidental discharge, the trigger gun should be securely locked when
not in use.
- Always wear eye and ear protection when using the Rotary Surface Cleaner. Other
protective clothing such as a rubber suit, gloves, respirator, etc., may be necessary
when using detergents.
- Never make adjustments on the machine while in operation.
- DO NOT leave pressurized unit unattended. Shut off the pressure washer and
release trapped pressure before leaving.
- Know how to stop the Rotary Surface Cleaner. Be thoroughly familiar with controls.
- Never place hands or feet under the cover assembly during operation to prevent
injury from rotating spray arm and high pressure injection.
4
FEATURES
Unpack the machine and make sure that it is complete and not damaged, In case it is not complete or
damaged, do not use the machine and consult your dealer. For reasons of packaging or transport, some
accessory components can be supplied loose. In this case they must be assembled according to the
instructions in this manual. Make sure that the components of the packaging are placed out of the reach
of children.
3
4
1.
2.
3.
4.
5.
6.
7.
8.
Box
Insert
Hose
Handle-Upper
Clevis Pin x 3pcs
Bridge Pin x 3pcs
Handle-Lower
Cover Assembly
5
6
2
7
6
1
5
8
SPECIFICATIONS
Model Name
A+SC21
A+SC24
Operation Pressure (PSI/BAR)
2000-4000/138-275
2000-4000/138-275
Flow Rate (GPM/LPM)
3.0-8.0/11.35-30
3.0-8.0/11.35-30
Max Temperature (°F/°C)
212°/100°
212°/100°
Maximum RPM
2500
2500
Unit Net Weight (Kg)
11.9
13.2
Unit Shipping Weight (Kg)
13.9
Unit Shipping Dimension(CM)
89 x 59 x 29
15.2
89 x 62 x 29
5
INSTALLATION & PREPARATION
NOZZLE SELECTION & INSTALLATION:
1. Your Rotary Surface Cleaner will come installed with one set of
25020 nozzles (25 degree and 2.0 orifice).
a. The minimum orifice size to be used in your Rotary Surface
Cleaner is half that which is being used in your pressure washer.
Example: If your pressure washer uses a size 5 orifice, you will
need to use a size 2.5 orifice in your Rotary Surface Cleaner.
(Two nozzles are inserted in the Rotary Surface Cleaner, therefore;
two nozzles x size 2.5 orifice = size 5 orifice.)
b. The nozzles being used should have a 15° - 25° spray pattern;
anything less than a 15° spray pattern can damage the area being
cleaned. Anything more than 25° may not allow the bar to rotate.
2. Nozzles should be screwed into the rotating bar. The spray fan
should be parallel to the Rotating Bar. (See figure at right.)
UNIT ASSEMBLY:
1. Line up the holes on the lower part of handle (7) with the holes on
the cover assembly (8).
2. Insert the clevis pins (5) through the handle and cover holes and
attach to the bridge pins (6).
3. Attach the upper handle (4) by lining up the hole in the upper and
lower handle. Push the clevis pin (5) through the aligned hole and
attach to the bridge pin (6).
4. Quick connect the Rotary Surface Cleaner hose assembly to the
handle center and to the swivel located on the unit base.
SET-UP:
1. Locate the high pressure discharge hose on your pressure washer
and ensure it is securely connected to the water outlet of the pressure
washer. Quick connect the other end of the high pressure discharge
hose to the gun on the Rotary Surface Cleaner.
2. Connect the water supply hose, one end to your pressure washer,
the other end to a pressurized water supply.
SURFACE PREPARATION:
1. Clear any loose debris from the area to be cleaned.
2. Never attempt to clean surface with objects that protrude from the
surface being cleaned. Striking any raised obstacle during operation
will damage machine. If contact does occur and results in vibration
when operating machine, STOP and replace spray bar.
Nozzle
Spray Pattern
(Parallel to Bar)
Rotating Bar
Handle-lower
Clevis pin
Aluminum Support
Handle-upper
Bridge pin
Clevis pin
Hose
Swivel housing
Connect socket
Click
6
Bridge pin
Quick plug
INSTALLATION & PREPARATION
Risk of Injury or damage to machine!!
NEVER OPERATE THE UNIT IF IT BEGINS TO VIBRATE!
Shutdown the unit and tighten the rotating bar, bolts and fittings.
COMPLETE SET UP
PRE-START INSPECTION PROCEDURES:
1. Inspect Rotary Surface Cleaner before each use. Tighten rotating bar,
bolts and fittings as needed.
2. Ensure all connections are secure. Turn the water supply completely
"ON". (DO NOT START PRESSURE WASHER!)
3. Inspect hoses for kinking, cut or leaks. If found, DO NOT USE HOSE!
Replace damaged hoses before starting.
4. Unlock the trigger gun and squeeze the trigger. Water will begin
flowing from the nozzles of the Surface Cleaner. Ensure nozzles are
not clogged and spray pattern is not erratic. Change nozzles before
proceeding if problems exist.
5. Be sure that all damaged parts are replaced and that the mechanical
problems are corrected prior to operation. If you need service, contact
an Authorized Service Center.
CLEAN UP WITH YOUR ROTARY SURFACE CLEANER
SPECIAL APPLICATION AREAS:
- Removing deposits, mass, algae, fuel, oil and grease from drive
through pads, boat ramps, tennis courts, roofs, pools, decks ,
walkways, factory floors, semi trailer floors, fishing docks, and
loading docks
- Cleaning off stubborn stains from asphalt and concrete surfaces
- Disinfection for the highest hygiene demands in saunas, bathroom
areas, and in the catering industry.
- Great for cleaning driveways.
The following comparison chart
shows the time taken to clean
a typical driveway (37 sq. meter)
Using 2 different components.
ATTACHMENT
TIME
Rotary surface cleaner 10 min.
Standard spray nozzle 80 min.
BENEFITS OF PRESSURE WASHER SURFACE CLEANERS:
- Huge time savings
- Easy, effortless work
- Substantially lower cost (especially labor)
- Visibly greater cleanliness
- Universally applicable
- Use with cold or hot water
- Circular design allows a zero wall clearance
- Hover action (cleaner "floats" above the ground)
- Eliminate streaking and fatigue
7
OPERATION
The Following Contains Operating And Maintenance Instructions.
Do Not Attempt To Operate This Rotary Surface Cleaner Until
You Have Read And Understood All Safety Warning And
Instructions Listed In This Manual.
Incorrect Operation Of This Unit Can Cause Serious Injury!
SAFETY ON
Do Not Alter Or Modify This Equipment In Any Manner!
START-UP:
1. Lock the trigger gun on the Rotary Surface Cleaner by moving the
safety lock lever to a 90° angle so it rests against the handle grip.
2. Ensure all connections are secure.
3. Unlock the trigger gun and squeeze the trigger while starting the
Pressure Washer.
4. Water will begin flowing from the nozzles of the Surface Cleaner.
Ensure nozzles are not clogged and spray pattern is not erratic.
Turn the pressure washer and water supply off and change nozzles
before proceeding if problems exist.
5. Walk slowly behind the unit, cleaning as you go. If striping occurs,
slow down the pace. Do not allow machine to remain stationary on
soft surfaces such as wood.
6. Check "weep hole" on top of the swivel periodically. Water will seep
slowly. If it shoots out, shut-down the unit and replace seals and/or
main seal.
Connect socket
Click
Quick plug
SAFETY OFF
Risk of Injury or damage to machine!!
NEVER OPERATE THE UNIT IF IT BEGINS TO VIBRATE!
Shutdown the unit and tighten the rotating bar, bolts and fittings.
SHUT-DOWN:
1. Turn the Pressure Washer off.
2. Turn the water supply off.
3. Squeeze the trigger gun to relieve water pressure.
4. Disconnect and drain the water hose and wipe down unit. Store unit
in a nonfreezing environment.
UNDER VIEW
Weep Hole
8
PRODUCT EXPLODED AND PARTS LIST
4 5 6
Handle Assembly
1
2
3
7
10
11
8
9
AVAILABLE REPAIR PARTS AND KITS
1.
2.
4.
Hose, A+SC21-SC24
8.753-584.0
Coupler, ¼” Plug, Female
8.707-136.0
¼” Quick Connect
8.750-696.0
KIT, SPRAY GUN, A+SC21-SC24
8.921-834.0
3. Screw M6X30
4. ¼” Quick Connect
5. Sleeve
6. Trigger Gun
KIT, HANDLE ASSEMBLY, A+SC21-SC24
8.921-835.0
7. Grip
8. Upper Handle
9. Lower Handle
10. Clevis Pin
11. Clevis Pull Ring
9
8.
707537.
0
PRODUCT EXPLODED AND PARTS LIST
Swivel Assembly
29.
30.
31.
32.
33.
34.
35.
36.
37.
38.
39.
40.
41.
42.
43.
44.
45.
46.
47.
48.
49.
Grease Nipple
Swivel Housing
O-Ring*
Compression Spring
O-Ring
Bolt
Pin
O-Ring*
Back up Ring*
Stem
Bearing Retainer, Small
O-Ring*
Bearing Retainer
Snap Ring
Bearing Back-up Ring
Upper Bearing
Bearing Spacer
Washer
Lower Bearing
Rotor Shaft
Snap Ring
* Kit, Swivel Seals, A+SC21-SC24
8.921-833.0
(Items 31, 36, 37, 40)
11
TROUBLESHOOTING
PROBLEM
Inadequate cleaning power.
PROBABLE CAUSE
REMEDY
Not enough PSI from
pressure washer.
Ensure unit produces a minimum
2000 PSI. Most effective cleaning
range is 2500-4000 PSI.
Inadequate water supply.
Turn water supply completely "ON"
pressure washer. Ensure unit
produces a minimum of 3.0 GPM.
Engine RPM on pressure
washer is too low.
Increase throttle.
Nozzle obstructed or worn.
Clean or replace as necessary.
Seal has drag.
Allow for break-in period.
Snap ring dislodged.
Do not use! Contact your
Customer Service.
Seal malfunction.
Do not use! Contact your
Customer Service.
Bearing failure.
Do not use! Contact your
Customer Service.
Excessive vibration of
Surface Cleaner OR
Nozzle clogged.
Clean or replace.
suction to the surface.
loose.
Rotating bar will not rotate.
Rotating bar or swivel rotor
bent.
Replace.
PSI of pressure washer is
too low. (Won't allow
Rotating Bar to move.)
pressure is a minimum of 2000 PSI
and GPM is a minimum of 3.0.
Nozzle clogged.
Clean or replace.
Cleaning too fast.
Slow down pace.
normal.
Water shooting from swivel.
12
Seal malfunction.
Replace.
ACCESSORIES AND PARTS WARRANTY
ACCESSORIES AND PARTS WARRANTY
LIMITED MINIMUM 90 DAY WARRANTY
We warrant to the original consumer that each new part and accessory sold by Kärcher
North America (KNA) will be free from manufacturing defects in materials or workmanship
in normal service for the duration specified by the original component manufacturer with a
90 day minimum from date of purchase, provided it is installed properly and the equipment is
maintained in accordance with KNA’S instructions and manuals. Components manufactured
by KNA, such as frames and handles have a one year warranty from date of purchase.
Our obligation under this warranty is expressly limited as to the replacement or repair, at
our option, at KNA, Camas, Washington 98607, or at a service facility designated by us, for
such part or parts as inspection shall disclose to have been defective.
EXCLUSIONS:
This warranty does not apply to defects caused by casualty or unreasonable use, including
faulty repairs by others and failure to provide reasonable and necessary maintenance.
THE FOLLOWING ITEMS ARE NOT COVERED BY THIS WARRANTY:
WE SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL
DAMAGES OF ANY KIND, including but not limited to labor costs or transportation charges
in connection with the replacement or repair of defective parts.
ANY IMPLIED OR STATUTORY WARRANTIES, INCLUDING WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY LIMITED TO
THE DURATION OF THIS WRITTEN WARRANTY. We make no other express warranty, nor
is anyone authorized to make any on our behalf.
Some states do no allow limitations on how long an implied warranty lasts or the exclusion of
limitation of incidental or consequential damages, so the above limitation may not apply to you.
This warranty gives you specific legal rights and you may also have other rights which vary
from state to state.
TO OBTAIN WARRANTY SERVICE:
Purchaser must bring the accessory parts to an authorized KNA Dealership. For the dealership nearest you consult our web page: www.KNA.com.
13
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