RedMax Paint Sprayer HM20_letter_801 User Guide

MCO080101 (801)  
OWNER/OPERATOR MANUAL  
HANDHELD SPRAYER  
HM20  
WARNING  
WARNING  
This sprayer is not designed to be used with acids of any  
kind, corrosive products like caustic soda, gasoline,  
materials capable of generating heat, hot fluids, explosive  
or highly volatile products.  
Before using our products, please read this  
manual carefully to understand the proper  
use of your unit.  
USE OF THESE AND OTHERS EXPOSE USERS TO  
SERIOUS INJURY AND EVEN DEATH.  
 
1. Parts location  
4. For safe operation  
3
WARNING  
6
5
1. Read this Sprayer Owner/Operator  
Manual carefully. Be sure you  
understand how to operate this unit  
properly before you use it. Failure to  
do so could result in serious injury.  
2. Be sure to keep this manual handy so that you may  
refer to it later whenever any questions arise. Also  
note that you are requested to contact the dealer  
from whom you purchased the product for  
assistance the event that you have any questions  
which cannot be answered herein.  
3. Always be sure to include this manual when selling,  
lending, or otherwise transferring the ownership of  
this product.  
4. Do not lend or rent your machine without the  
owner's manual.  
2
7
1
1. Tank  
4
2. Pump (Inside)  
3. Lid (cap)  
4. Shoulder Strap  
5. Hose  
6. Wand  
7. Nozzle  
5. Be sure that anyone using your unit understands the  
information contained in this manual.  
6. Never let a child under 13 years old  
use the machine.  
2. Specifications  
7. DO NOT use flammables in the  
Type ·········································································Handheld  
Model Name ···································································HM20  
Dimensions (LxWxH) ···························576x205x205 (22.7x8.1x8.1) mm (in)  
Dry Weight··········································································2.85 (5.7) kg (lbs)  
Tank Capacity·································································7.57 (2.0) litter (Gal)  
Max. Pressure ······························································2.94 (42) kgf/cm2 (psi)  
Working Pressure······················································ (0.7 – 2.8) kgf/cm2 (psi)  
Sealed/O rings············································································VITON/Nytril  
Pump Type ·········································································Internal Piston  
Reparability················································································YES  
sprayer. They can ignite ore xplode  
causing serious injury.  
8. Always wear splash goggles and  
protective gear and clothing when filling, using  
and/or cleaning the sprayer.  
9. Oil the rubber cap gasket prior to first usage so the  
gasket will seal properly.  
10.Tighten all connections before using the sprayer.  
Some may not he properly secured and must be  
tightened to prevent leakage.  
Tank Mouth···················································································4.5" Funnel  
Wand Type······················································································16" Brass  
Standard Nozzle ······················································Adjustable Brass Nozzle  
WARNING  
BEFORE USING:  
Oil cap gasket, oil check valve, and maintain breather  
hole clear of debris. Your failure to oil and to clean  
check valve, and to maintain breather hole open to  
allow air into tank, can cause tank to collapse and  
crack due to vacuum created by the pump.  
3. Warning labels on the machine  
WORKING CONDITION  
IMPORTANT  
1. Refrain from operating the sprayer if you are  
tired, ill, or upset, or if you are under the  
influence of alcohol, drugs or medication.  
2. To reduce the risk of injury when filling, using  
and/or cleaning the sprayer, always wear eye  
protection. Eye protection should meet the  
requirements of ANSI Z87.1.  
3. Always wear a mask or respirator when  
filling, using and cleaning sprayer, if  
recommended by the spray material  
manufacturer.  
If warning label peel off or become soiled and impossible to  
read, you should contact the dealer from which you  
purchased the product to order new labels and affix them in  
the required location(s).  
WARNING  
Never modify your machine.  
We won't warrant the machine, if you use the remodeled  
machine or you don't observe the proper usage written in  
the manual.  
4. Wear protective gear and clothing when  
filling, using and cleaning the sprayer.  
3
 
4. For safe operation  
5. Wear sturdy rubber-soled shoes or shoes  
with some other form of anti-slip protection to  
help protect you against falling when filling,  
using and/or cleaning the sprayer.  
6. Do not wear loose clothing, scarves, neck  
chains, hair longer than shoulder length, and  
the like when filling, using and/or cleaning  
the sprayer.  
• Pay attention to the direction of the wind, do not work  
against the wind.  
• Never use the sprayer during windy conditions.  
• Never point a sprayer nozzle toward an open flame to  
avoid the possibility of igniting the unit, causing injury to  
yourself or damage to surroundings.  
• Always release pressure in the pump prior to filling,  
cleaning, or servicing the sprayer.  
• Before opening a container of pesticide or other spray  
material, carefully read, understand, and follow all  
instructions on the label.  
• Do not use flammable materials in the sprayer: they can  
ignite and/or explode, causing serious injury.  
• Never use caustic or corrosive materials in the sprayer,  
which could result in damage to the unit.  
• In case of personal contamination: remove contaminated  
clothing, remain upright, do not consume liquids or  
cause vomiting, and get professional help immediately.  
• Never attempt to pressurize the unit by any other method  
than with the pump module provided. Never over-  
pressurize the unit.  
• Do not eat, drink, or smoke while spraying.  
• Wash face and hands with soap and water after  
spraying.  
• Clean and rinse tank and spraying assembly after each  
use to prevent crystallizing, which would later cause  
clogging and chemical damage to the unit.  
• Do not store sprayer under pressure, or with spray  
solution in tank.  
IMPORTANT  
Check and follow the local regulations.  
WORKING PLAN  
• When planning your work schedule, allow plenty of time to  
rest. Limit the amount of time over which the product is to  
be used continuously to somewhere around 30 ~ 40  
minutes per session, and take 10 ~ 20 minutes of rest  
between work sessions. Also try to keep the total amount of  
work performed in a single day under 2 hours or less.  
USING THE PRODUCT  
• Do not transfer spray materials to other containers,  
especially, food and/or drink containers.  
NOTE  
Hose clamps are not completely tight.  
Please tighten hose clamps prior to using.  
Hose clamps are left loose to extend life of gaskets and  
fittings.  
• Keep spray materials locked up and out of reach of  
children and animals.  
• Use only original manufacturer’s replacement parts.  
• As a rule, mix your chemicals in a separate container  
from which to fill the sprayer. Do not mix formulas inside  
the sprayer. Where an exception is made (e.g. with liquid  
fertilizers), fill sprayer with water BEFORE adding the  
active ingredient.  
WARNING  
Oil cap gasket before using and lubricate weekly so the  
gasket will seal properly and prevent chemical leaks.  
• Always sift formula through the screen. If there is no  
built-in strainer, use a screened funnel.  
Oil check valve and maintain breather hole clear of  
debris. Your failure to oil may can cause the tank to  
collapse and crack due to vacuum created by pump  
lubricate with "3 and 1" oil.  
• Never fill the sprayer with hot liquids. Max. 30°C, or  
85°F.  
• Never use gasoline or other flammable materials.  
• Before cleaning or servicing the sprayer, allow all  
pressure to escape. Do not store or transport sprayer  
under pressure.  
• After each use, wash the sprayer—including hose, lance  
and shut-off valve—with plenty of fresh water. Unless  
spraying is to be continued within hours, drain chemical  
formula and thoroughly rinse the tank and all liquid  
ducts.  
1. Always inspect your sprayer thoroughly before and after  
each use. Check to be sure hose is securely attached and  
in good condition before pressurizing the tank.  
2. Check the work area that the sprayer will be  
used in and remove or cover all valuables  
that may be damaged by using sprayer.  
3. To reduce the risk of injury,  
• Watch out for children, pets, open  
windows or freshly washed cars, and  
spray safely away.  
• Never store chemicals in your sprayer for any length of  
time  
• Do not leave the sprayer in reach of children or persons  
not qualified to handle it in proper fashion.  
• Do not allow bystanders in work area.  
• Do not point the sprayer nozzle in the direction of people  
or pets.  
• When not in use—and especially during prolonged  
storage—keep your sprayer in a protected place away  
from direct solar heat.  
4
 
5. Set up  
NOTE  
4. For safe operation  
• Make sure the spray hose loops freely without kinking or  
squeezing.  
Hose clamps are not completely tight.  
Please tighten hose clamps prior to using.  
Hose clamps are left loose to extend life of gaskets and  
fittings.  
4. After using sprayers and other equipment, CLEAN UP!  
Dispose of debris in trash receptacles.  
MAINTENANCE  
1. In order to maintain your product in proper working order,  
perform the maintenance and checking  
operations described in the manual at  
WARNING  
Oil cap gasket before using and lubricate weekly so the  
gasket will seal properly and prevent chemical leaks.  
regular intervals.  
2. Examine the sprayer at intervals for loose  
fasteners and rusted or damaged parts.  
Oil check valve and maintain breather hole clear of  
debris. Your failure to oil may can cause the tank to  
collapse and crack due to vacuum created by pump  
lubricate with "3 and 1" oil.  
Use special care for chemical leakage.  
3 Clean and rinse tank and spraying assembly after each use  
to prevent crystallizing, which would later cause clogging  
and chemical damage to the unit.  
4. All service except for those described in this manual should  
be performed by competent service personnel.  
5. When replacing the any other part, or any lubricant, always  
be sure to use only RedMax products or products which  
have been certified by RedMax for use with the RedMax  
product.  
HOW TO ASSEMBLE  
1. Attach spray wand to spray gun and tighten firmly.  
2. If unit is fitted with pressure valve, secure tightly.  
6. In the event that any part must be replaced or any  
maintenance or repair work not described in this manual  
must be performed, please contact a representative from  
the store nearest RedMax authorized servicing dealer for  
assistance.  
7. Do not use any accessory or attachment other than those  
bearing the RedMax mark and recommended for the unit.  
8. Under no circumstances should you ever take apart the  
product or alter it in any way. Doing so might result in the  
product becoming damaged during operation or the product  
becoming unable to operate properly.  
TRANSPORTATION  
• Clean and rinse tank and spraying assembly after each use  
to prevent crystallizing, which would later cause clogging  
and chemical damage to the unit.  
• Drain the content from the tank before transporting or  
storing the sprayer.  
• Secure the unit carefully to prevent movement when it is  
transported.  
• A unit that receives a strong shock during transport and  
unloading may malfunction.  
STORAGE  
• Clean and rinse tank and spraying assembly after each use  
to prevent crystallizing, which would later cause clogging  
and chemical damage to the unit.  
• Do not store sprayer under pressure, or with spray solution  
in tank.  
• When storing the sprayer, choose a space indoors free  
from moisture and out of the reach of children.  
DISPOSAL  
• When disposing your machine, or chemical, be sure to  
allow your local regulations.  
5
 
6. Pre-operation  
7. Operation  
• Always release pressure in the pump prior to filling,  
cleaning, or servicing the sprayer.  
NOTE  
• Before opening a container of pesticide or other spray  
material, carefully read, understand, and follow all  
instructions on the label.  
• Do not use flammable materials in the sprayer: they can  
ignite and/or explode, causing serious injury.  
• Never use caustic or corrosive materials in the sprayer,  
which could result in damage to the unit.  
Hose clamps are not completely tight.  
Please tighten hose clamps prior to using.  
Hose clamps are left loose to extend life of gaskets and  
fittings.  
WARNING  
Oil cap gasket before using and lubricate weekly so the  
gasket will seal properly and prevent chemical leaks.  
• A single pumping session or 40 full strokes provides  
enough pressure to spray continuously for 10 mInutes -  
enough to completely empty tank with just two pumping  
sessions.  
• If sprayer is fitted with pressure relief valve - this valve will  
release at 42 psi.  
Oil check valve and maintain breather hole clear of  
debris. Your failure to oil may can cause the tank to  
collapse and crack due to vacuum created by pump  
lubricate with "3 and 1" oil.  
• Spray pistol may be locked in the open position for  
continual spraying.  
IMPORTANT  
HOW TO ADJUST THE NOZZLE  
Before using, oil cap gasket, felt pump washer, and check  
valve, and maintain breather hole clear of debris. Your failure  
to oil, clean check valve, and maintain breather hole open to  
allow air into the tank, can cause the tank to collapse and  
crack, due to vacuum created by pump.  
• To adjust nozzle, tighten cap (turn clockwise) for fine  
atomized spray, or loosen (turn counter-clockwise) for  
coarser spray or solid stream.  
RECOMMENDED APPLICATIONS FOR  
"LAWN AND GARDEN" OR "AGRICULTURE" USAGE.  
1. Before you remove cap, be sure there is no pressure in the  
tank. in order to release pressure, invert unit upside down  
and squeeze spray pistol (aim away from you). Pressure  
will escape; when hissing stops, all pressure has been  
released. Remove pump assembly by turning counter-  
clockwise. The pump handle has two locking positions, one  
turning clockwise and one counter-clockwise.  
2. Remove cap.  
3. A unit that has been used with herbicides should never be  
used to spray insecticides, unless the sprayer has been  
properly cleaned and all other chemicals neutralized.  
Failure to do this could cause you to kill plants that have  
been sprayed. Consult with the manufacturer of the  
chemicals in use to obtain proper instructions.  
4. Always oil the gasket on the cap of the unit, as well as the  
check valve. This will extend the life of the seal and is  
important for obtaining a proper seal with no leaks.  
5. Mix solution in a separate container, following the  
manufacturers’ directions.  
Herbicide : Yes  
Insecticides/Pesticides : Yes  
Fertilizers : Yes  
Chlorine based : Yes  
Diesel : Yes  
Wettable Powder : No  
Stains & Sealers : Yes  
Oil Based : Yes  
Solvent-Based : Yes  
Viscous : No  
6. Pour pre-mixed solution through strainer into tank. Reinstall  
cap tightly.  
6
 
8. Maintenance  
9. Storage  
WARNING  
WARNING  
Before you remove cap, be sure there is no pressure in  
the tank. in order to release pressure, invert unit upside  
down and squeeze spray pistol (aim away from you).  
Pressure will escape; when hissing stops, all pressure  
has been released. Remove pump assembly by turning  
counter-clockwise. The pump handle has two locking  
positions, one turning clockwise and one counter-  
clockwise.  
Never store chemicals in your sprayer for any length of  
time  
1. Before you remove cap, be sure there is no pressure in the  
tank. in order to release pressure, invert unit upside down  
and squeeze spray pistol (aim away from you). Pressure  
will escape; when hissing stops, all pressure has been  
released. Remove pump assembly by turning counter-  
clockwise. The pump handle has two locking positions, one  
turning clockwise and one counter-clockwise.  
2. Remove cap and pour out remaining solution, then rinse all  
parts thoroughly with clean water.  
3. Add 1/2 gallon of fresh water in tank. Pressurize, and flush  
pumping system by depressing trigger for at least two  
minutes; then drain all remaining water.  
1. Remove cap and pour out remaining solution, then rinse all  
parts thoroughly with clean water.  
2. Add 1/2 gallon of fresh water in tank. Pressurize, and flush  
pumping system by depressing trigger for at least two  
minutes; then drain all remaining water.  
• Periodically re-grease lid gasket as well as lid vent and  
pump cylinder, where applicable.  
4. Always store tank clean and empty in a dry, shaded  
location.  
• To ensure good performance, keep lid vent free of  
obstruction. Before and after each use, make sure all  
connections are well tightened. Service and replace worn  
parts as required.  
10. Disposal  
When disposing your machine, or chemical, be sure to allow  
your local regulations.  
NOTE  
Failure to follow manufacturer's recommendation of use and  
care of unit will void any expressed or implied warranty. Do  
not use chlorine or clorox. It will permanently damage pump  
system.  
NOTE  
In the event that any part must be replaced or any  
maintenance or repair work not described in this manual must  
be performed, please contact a representative from the store  
nearest RedMax authorized servicing dealer for assistance.  
NOTE  
If pumping does no pressurize the tank, remove pump from  
tank; then remove the two screws from to of pump module.  
Pull plunger out and inspect seals. If damaged, obtain original  
SP Systems replacement parts from your dealer and replace.  
SPRYAER MAINTENANCE TABLE  
Dayly  
or  
System/Compornent  
Procedure  
Before Use After Use  
Lid Gasket  
Pump  
Grease  
Grease  
Connection  
Whole unit  
Inspect/Tight  
Wash/inspect  
7
 
8
 
11. Parts list  
HANDHELD SPRAYER  
HM20  
NOTE :  
1. Use RedMax/ZENOAH genuine parts as specified in the  
parts list for repair and/or replacement.  
2. RedMax/ZENOAH does not warrant the machines, which  
have been damaged by the use of any parts other than  
those specified by the company.  
3. When placing parts orders for repair and/or replacement,  
check if the model name is applicable to those specified  
in the parts list, then use parts number described in the  
parts list.  
4. The contents described in the parts list may change due  
to improvement.  
5. The parts for the machine shall be supplied seven (7)  
years after the machine is discontinued. [It is possible  
that some specific parts may be subject to change of  
their delivery term and list price within the limit of seven  
(7) years after the machine is discontinued. It is also  
possible that some parts may be available even after the  
limit of seven (7) years.]  
9
 
11. Parts List : HM20  
10  
 
11. Parts List : HM20  
Key# Part KIT Number  
Description  
Q'ty  
1
2
RMKIT15  
RMKIT283  
RMKIT36  
RMKIT17  
RMKIT18  
RMKIT19  
RMKIT20  
RMKIT21  
RMKIT367  
RMKIT22  
RMKIT25  
RMKIT24  
RMKIT26  
RMKIT524  
RMKIT0567  
RMKIT0566  
RMKIT54.2  
RMKIT55  
RMKIT56  
RMKIT59  
RMKIT57  
RMKIT60  
RMKIT279  
RMKIT392  
Belt and clip.  
• Belt hook.  
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3
• Shoulder pad.  
4
Hose & 2 hose clamps.  
Complete spray pistol.  
• Spindle set.  
5
6
7
• Spindle O-ring set.  
8
• Plug set.  
9
• • O-ring for plug.  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
Brass spray wand 20".  
Spray tip set.  
• Nozzle holder.  
• Spray tip O'ring Nytril.  
Red base for compression sprayer.  
Complete pump module.  
• Recl pump handle.  
• Pump tube.  
• • Large pump O'ring.  
• • Check valve "antenna" & O'ring.  
• Pump plunger ass'y set.  
• • Pump plunger.  
• Pump top screw set.  
Hose spring for compression sprayer.  
Washer set for gun and nozzle.  
11  
 
LIMITED WARRANTY  
FOR TWO (2) YEARS OF HOME USE, ONE (1) YEAR FOR COMMERCIAL USE AND NINETY (90) DAYS FOR RENTAL USE  
FROM THE DATE OF ORIGINAL PURCHASE,THE COMPANY, THROUGH ANY RedMax DEALER, WILL REPAIR OR  
REPLACE, FREE OF CHARGE, FOR THE ORIGINAL PURCHASER, ANY PART OF PARTS FOUND TO BE DEFECTIVE IN  
MATERIAL AND/OR WORKMANSHIP. THIS IS THE EXCLUSIVE REMEDY.  
THE PURCHASER SHALL BEAR COSTS OF TRANSPORTING THE UNIT TO AND FROM THE RedMax DEALER.  
THE PURCHASER SHALL NOT BE CHARGED FOR DIAGNOSTIC LABOR WHICH LEADS TO THE DETERMINATION  
THAT A WARRANTED PART IS DEFECTIVE, IF THE DIAGNOSTIC WORK IS PERFORMED AT THE RedMax DEALER.  
THE PURCHASER OR OWNER IS RESPONSIBLE FOR THE PERFORMANCE OF THE REQUIRED MAINTENANCE AS  
DEFINED BY THE MANUFACTURER IN THE OWNER/OPERATOR MANUAL.  
ANY WARRANTED PART WHICH IS NOT SCHEDULED FOR REPLACEMENT AS REQUIRED MAINTENANCE, OR  
WHICH IS SCHEDULED ONLY FOR REGULAR INSPECTION TO THE EFFECT OF "REPAIR OR REPLACE AS  
NECESSARY" SHALL BE WARRANTED FOR THE WARRANTY PERIOD. ANY WARRANTED PART WHICH IS  
SCHEDULED FOR REPLACEMENT AS REQUIRED MAINTENANCE SHALL BE WARRANTED FOR THE PERIOD OF  
TIME UP TO THE FIRST SCHEDULED REPLACEMENT POINT FOR THE PART.  
ANY REPLACEMENT PART THAT IS EQUIVALENT IN PERFORMANCE AND DURABILITY MAY BE USED IN NON-  
WARRANTY MAINTENANCE OR REPAIRS, AND SHALL NOT REDUCE THE WARRANTY OBLIGATION OF THE  
COMPANY.  
THE COMPANY IS LIABLE FOR DAMAGES TO OTHER ENGINE COMPONENTS CAUSED BY THE FAILURE OF A  
WARRANTED PART STILL UNDER WARRANTY.  
THE WARRANTY DOES NOT APPLY TO THOSE UNITS WHICH HAVE BEEN DAMAGED BY NEGLIGENCE OF  
INSTRUCTION LISTED IN THE OWNER/OPERATOR MANUAL FOR PROPER USE AND MAINTENANCE OF THE UNITS,  
ACCIDENTAL MISHANDLING, ALTERATION, ABUSE, IMPROPER LUBRICATION, USE OF ANY PARTS OR ACCESSORIES  
OTHER THAN THOSE SPECIFIED BY THE COMPANY, OR OTHER CAUSES BEYOND THE COMPANY'S CONTROL.  
THIS WARRANTY DOES NOT COVER THOSE PARTS REPLACED BY NORMAL WEAR OR HARMLESS CHANGES IN  
THEIR APPEARANCE.  
THERE ARE NO OTHER EXPRESS WARRANTIES.  
IMPLIED WARRANTIES INCLUDING THOSE OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE  
LIMITED TO TWO (2) YEARS OF HOME USE, ONE (1) YEAR FOR COMMERCIAL USE AND NINETY (90) DAYS FOR  
RENTAL USE FROM THE ORIGINAL DELIVERY DATE.  
LIABILITIES FOR INCIDENTAL OR CONSEQUENTIAL DAMAGE UNDER ANY AND ALL WARRANTIES  
ARE EXCLUDED.  
SOME STATES DO NOT ALLOW LIMITATION ON HOW LONG AN IMPLIED WARRANTY LASTS OR EXCLUSION OR  
LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION 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.  
IF YOU NEED TO OBTAIN INFORMATION ABOUT THE NEAREST SERVICE CENTER, PLEASE CALL RedMax / ZENOAH  
AMERICA, INC. AT (770)-381-5147.  
IMPORTANT: YOU WILL RECEIVE A WARRANTY REGISTRATION CARD AT TIME OF PURCHASE.PLEASE FILL  
OUT THE CARD AND SEND IT TO RedMax / ZENOAH AMERICA WITHIN SEVEN (7) DAYS. BE SURE TO KEEP  
A COPY FOR YOUR RECORDS.  
ZENOAH AMERICA, INC.  
1100 Laval Blvd. Suite 110  
Lawrenceville, Georgia 30043  
 

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