Chapin Pro Series User manual

Model 64800 • 4G/ 15L

016767 R1019

Carefully Read These Instructions Before Use

Chapin International, Inc

P.O. Box 549

700 Ellicott St.

Batavia, NY 14021-0549 U.S.A.

1-800-950-4458

www.chapinmfg.com

WARNING

Use and Care Manual

DO NOT RETURN THIS

SPRAYER TO STORE

Call: 1-800-950-4458

www.chapinmfg.com

BackpackBackpack

SprayerSprayer

ProSeriesProSeries

™

WARNING

CAUTION

WARNING: Improper use or failure to follow instructions can result in

explosive failure causing serious eye or other injury. For safe use of this product

you must read and follow all instructions. Do not leave a pressurized sprayer in the hot

sun. Heat can cause pressure build-up resulting in possible explosion. Do not store or leave

solution in tank after use. Always wear goggles, gloves, long sleeve shirt, long pants and

full foot protection when spraying. Never use any tool to remove pump if there is pressure

in the pressure chamber. Never pressurize sprayer by any means other than the original

pump. Do not attempt to modify this sprayer. Replace parts only with manufacturer’s

original parts. Never spray ammable, caustic, acidic, chlorine, bleach or other

corrosive solutions or heat, pressure, or gas producing chemicals. Always

read and follow chemical manufacturer’s instructions before use with this

sprayer as some chemicals may be hazardous when used with this sprayer.

SK 1158-1

• PRE-USE CHECK: Before each use check tightness of hose nut to be sure hose is

 securelyattachedtotheshut-oassembly.Ensurehoseissecurelyattachedtothe

tank by tightening hose clamp if necessary. Ensure that all nozzle and wand

connections are tight. Insure the large pump clamp is tight. Insure the 2 bolts

used to attach the pump lever to the pump shaft are tight.

• Do Not exceed a tank solution temperature of 120º F/ 49º C.

NOTE: The tank and hose may have residual water in it due to quality testing

performed on the sprayer.

1. Poly

Nozzle Cap

2. Retaining

Nut

3. Nozzle

Body

4. Nozzle

Gasket

5. Elbow

Figure 3Figure 2Figure 1

1. Brass

Nozzle Cap

2. Retaining

Nut

3. Nozzle

Body

4. Nozzle

Gasket

5. Elbow

Nozzle

Gasket

Retaining Nut

Elbow

Fan Nozzle Tip

APPLICATIONS & USE FOR YOUR SPRAYER

Avoid using a sprayer for general cleaning purposes if plant protection or herbicide chemicals have already

been used in the sprayer. If a sprayer has been used for plant protection or as an herbicide, clean the sprayer

completely (see cleaning section) before using.

Plant Food: Use dierent spray patterns for optimum foliage feeding or for fungicide and pesticide

application.

Herbicides: Reduce weeds and unwanted plants but avoid using the same sprayer for plant feeding or

protectionwithoutthoroughlycleaning(seecleaningsection)thesprayerﬁrst.

General Household Use: Apply detergents, cleaning solutions, warm water (do not exceed 120°F/49°C)

ornontoxichouseholdcleaningchemicalsforcarpets,ﬂoors,walls,glass,countertopsandceilings.DONOT

use sprayer that has been used with herbicides, pesticides or other toxic chemicals for household applications.

General Outdoor Use: Use the sprayer for cleaning windows or with a detergent for general purpose

cleaning.

SPRAYER COMPONENTS & USE INFORMATION

NOZZLE ASSEMBLY

Figure 1-2

Unscrew the nozzle cap (1) from the nozzle body (3) with retaining nut (2) fastened tightly to the elbow (5).

Unscrew the retaining nut (2). Push the nozzle body (3) with the nozzle gasket (4) out of the retaining nut

(2). To reinstall the nozzle, reverse the above instructions.

Figure 3

Unscrew the retaining nut from the elbow and push the fan nozzle tip and gasket out of the retaining nut. To

reinstall the nozzle, reverse the above instructions.

O-ring

Wand

Retaining Nut Shut-off

Valve

WAND ASSEMBLY

1.Makesuretheo-ringisinstalledontheendofthewand.Insertthewandintoshut-ovalve.

2.Turnandtightentheretainingnutclock-wiseontotheshut-ovalve.

SPRAYER COMPONENTS & USE INFORMATION, Continued

WAND HOLDER

The wand easily snaps into

handle.

The top of the shoulder straps are attached to the tank.

Attach the lower end of the straps by clipping the strap hooks

to the metal frame between where the frame exits the tank

and curves around.

INSTALLING THE SHOULDER STRAP

Figure 1 Figure 2

Line up holes

Figure 3

Slide bolts through holes

Figure 5

Right Hand

Figure 4

Tighten nut to bolt

Threaded Bolt

Nylon Lock Nut

A. Pump Shaft

B. Bolts

C. Pump Handle

D. Nuts

Pump

Handle

Pump

Shaft

Completed Assembly

INSTALLING THE PUMP HANDLE

The pump handle can be mounted on either side of the pump shaft (A). To

install the pump handle place the handle (C) over the shaft (A) aligning the

pump handle holes and shaft holes. Slide the bolts (B) through the aligned

holesasshowninﬁgure3.Tightennuts(D)tobolts.Thereareholesinthe

pumphandletoallowforeitherleft(ﬁg.2-4)orright(ﬁg.5)handmounting.

FILLING THE SPRAYER

Makesuretheﬁlterbasketisinplacetokeepdebrisfromenteringthetank.

Determine the amount of mixture needed for your application. Add the proper amount of water to the tank.

Add the proper amount of chemical to the tank (check the chemical label for proper ratio of chemical). Stir

mixtureintankwithacleanutensil(likeapaintstirrer).Thetankwillholdthe4-gallon(15.1L)capacityplus

the chemical.

Itisnotnecessarytocompletelyﬁllthesprayertankwitheachuse.Youcanﬁllthetankwithonlytheamount

needed for each application.

Always follow the manufacturer’s instructions included on their product label.

Stage 3

(removable

Shut-off ﬁlter)

Figure 1 Stage 1

(Filter

basket)

3 STAGE FILTERING SYSTEM

Stage 2

(Removable

In-Tank Filter

Pressure

Cylinder

Thisbackpacksprayerisequippedwitha3stageﬁlteringsystem(seeﬁgure

1).Stage1isaﬁlterbasketincorporatedintothetankopeningwhereﬂuidis

added.Stage2ﬁlterislocatedattheinletofthepressurecylinder.Stage2

isaremovableIn-Tankﬁlter.Stage3isaremovableﬁlterincorporatedinto

theshut-oassembly.Periodiccleaningoftheseﬁltersisrecommendedto

insureconsistentﬂuidﬂowthroughthesprayer.Thiswillalsoreducesprayer

component wear.

Thestage3ﬁlterisaremovableﬁlterincorporatedintotheinletsideofthe

shut-ovalve(seesection“disassemblingandrepairingtheshut-ovalve”).

Makesurepressureisreleasedbeforedetachingthehosefromtheshut-o.

Itisbesttohavenoorminimalﬂuidinthepressurecylinderbeforeremoving

andreinstallingthestage3shut-oﬁlterasﬂuidcanleakfromthehose.

Figure 2 Stage 2 (removable In-Tank ﬁlter)

Guide edge facing away from

pressure cylinder Guide edge on pressure

cylinder

SPRAYER COMPONENTS & USE INFORMATION, Continued

HELPFUL SPRAYING INFORMATION

UseRAPIDpumpstrokestoprimethepump.Youwillknowthepressurechamberisﬁllingwithliquid

whenyoufeelﬁrmresistancefromthepump.Theairinthepressurechamberiscompressedfrom

repeatedstrokes.Bypressingthehandleverontheshut-o,thevalveopens.Forsafetylock-ofeature

(no-spraying),pulluponhandleandmoveredlockingmechanismintolock-opositionasshowninﬁg.

1.Todisengage,pulluponhandleandreturnredlockingmechanismtoneutralpositionasinﬁg.3.For

lock-on feature (continuous spraying), push down on handle and move red locking mechanism into lock-

onpositionasshowninﬁg.2.Todisengage,pushdownonhandleandreturnredlockingmechanismto

neutralpositionasshowninﬁg.3.

LOCK-ON POSITION NEUTRAL POSITIONLOCK-OFF POSITION

Locking Mechanism Handle

Down

Handle

Figure 1 Figure 2 Figure 3

For easy pump action use the END of the pump handle. The amount of liquid delivered during spraying

depends on the rate of pump stroke. The fan nozzle tip is rated at .4 gpm at 40psi. This is the nominal

operating pressure of the sprayer.

Note: If you experience a rapid drop in pressure, drain the sprayer completely and pump the handle

withanemptytank.Thepressurechamberwillﬁllwiththerequiredvolumeofairtorepressurize.

Perform this procedure from time to time as routine maintenance.

POWDER-BASED CHEMICALS

Powder-based chemicals (powder mixed with liquids to make the spraying agent) are usually abrasive

and can cause wear. When you use a powder-based chemical in your sprayer, make sure it is thoroughly

dissolvedintheliquidsolution.Thoroughlycleanandﬂushthesprayerwithwatertoextendthelifeof

the sprayers parts.

CLEANING

1) Always empty the sprayer and clean the tank thoroughly after each use.

2) Pump the sprayer handle until all of the contents and air exit through the nozzle (minimum of

 30strokes).

3)Filltankhalfwaywithwaterandpumpthewateroutasexplainedinstep2(repeatseveraltimes

as necessary).

Other Cleaning Hints:

• Improper spray distribution usually means the nozzle is clogged, remove the nozzle and clean it.

• Soap can be added to the water to clean the tank.

• Do not use strong cleaning agents or abrasives.

• If you use a chemical agent to clean the tank follow the manufacturer’s recommendations for the

disposal of the waste water.

• Follow the chemical manufacturers instructions for clean up.

STORING / MAINTAINING YOUR SPRAYER

• The sprayer should be stored out of direct sunlight in a cool dry space.

• Before freezing weather make sure to drain all liquid in the tank, lines and pressure cylinder

 toavoidliquidexpansionandcrackinginthesprayercomponents(See“Cleaning”)andlockthe

 shut-ovalveinthe“open”position.

• When service is required call your nearest dealer and always insist on original manufactured

replacement parts.

•Inspectthehose,wand,pump,tankandshut-ovalveforwear,damageorleaksonaregularbasis

and repair defects promptly.

TROUBLE SHOOTING YOUR SPRAYER

Symptom Possible Reason Correction

Difﬁculty actuating the pump handle and/or Upper valve plate sticks Clean or replace valve plate

pump handle moves itself back up.

Little or no resistance during Damaged/worn/dirty/upper valve plate Clean or Replace Valve Plate

repeated pumping – no pressure. Damaged /worn upper o-ring on piston cylinder Replace O-ring

Diaphragm pump is damaged Replace Diaphragm pump

Too much resistance after just a few Not enough air cushion in the pressure Release pressure in pressure chamber

pumping strokes but pressure only lasts chamber Remove the hose & drain pressure

brieﬂy. chamber. Reconnect the hose.

Upper valve plate damaged/worn/dirty Clean or replace upper valve plate

Upward pumping action is more difﬁcult Vent hole is clogged Clear the vent hole in cap

and/or pump handle moves itself back down. Clogged ﬁlter Clean the in tank ﬁlter

Piston cylinder intake clogged Clean piston cylinder intake

Leaks at Diaphragm Pump Damaged/worn/O-rings Replace o-rings on Diaphragm Pump

Damaged Diaphragm Pump Replace Diaphragm Pump

Shut-off leaks Connections loose Tighten connection

Worn or damaged shut-off Rebuild or replace the shut-off valve

Wand assembly leaks Connections loose Tighten connection

Damaged or worn o-ring/gasket Replace o-ring/gasket

Nozzle assembly leaks Connections loose Tighten connection

Damaged or worn o-ring/gasket Replace o-ring/gasket

Leak between pump assembly Pump clamp loose Tighten clamp

and tank O-ring worn or damaged Replace pressure chamber o-ring

Hose leaking at tank outlet Hose clamp loose Tighten clamp

Hose leaking at shut-off Connection loose Tighten retaining nut

Damaged or worn o-ring/gasket Replace o-ring/gasket

DISASSEMBLING AND REPLACING THE DIAPHRAGM PUMP ASSEMBLY

Figure 1

In-Tank

Filter

1. Release the pressure from the sprayer and remove all liquid from

both the pressure chamber and tank.

2. RemoveﬁlterbasketandtheIn-tankﬁlterfromthepressure

 chamber(ﬁg.1).

3. Removehose(ﬁg.2).

4. Remove 2 bolts attaching the pivot lever to the pump shaft and

 removediaphragmassembly(ﬁg.3).

5. Removethe2boltsholdingbackspine/frame(ﬁg.4),andtheback

 spine/framewillcomeo.

6. Rock the pressure chamber back and forth and push down to free it

 fromthetank(ﬁg5).Oncefreedtheentirepumpassemblycan

be removed.

7) The pressure chamber o-ring can be replaced. DO NOT stretch

 theo-ringoverthebottomﬂange.Assembletheo-ringoverthetop

of the chamber. Apply petroleum jelly to the o-ring before

 reinstallingpumpassemblyintothetank(ﬁg.6).

8) Reassemble in reverse of removal. Note: there is a notch/tab

combination in the pump assembly/tank to be used for

 alignment(ﬁg.7).

Figure 2

Figure 3

Figure 4

Pressure

Chamber

o-ring

Pump

Assembly

Figure 6

Pressure

Cylinder

Notch

Tank Tab

Figure 7

Figure 5

Pressure

Chamber

Filter

Basket

Figure 2

Figure 3

Figure 5

O-rings

O-ring

Figure 6

Pressure

Cylinder Base

Figure 7

Figure 8

Diaphragm Pump

Alignment Mark

Pressure Cylinder Base

Alignment Mark

Diaphragm

Cover Slot

Figure 1

1) Unscrew diaphragm pump from pressure cylinder base.

The use of a strap wrench or other mechanical means may

 beneccesary(ﬁg.1).

2) Remove cotter pin from diaphragm pump assembly pivot

lever connection. Remove pivot lever and connection

 hardwarefromdiaphragmpumpassembly(ﬁg.2and3).

3) DiscardDiaphragmPumpAssembly.

4) Attach pivot lever and connection hardware to new

diaphragm pump assembly. Make sure orientation is

 correctwithslotindiaphragmcover(ﬁg.4).

5) ApplyPetroleumjellyto2diaphragmpumpo-rings(ﬁg.5).

Screw diaphragm pump assembly into pressure chamber

 base(ﬁg.6),makingsuretheo-ringseatsinsidethepressure

 chamberbasesothattheo-ringdoesnotshowanymore(ﬁg.7)

6) Align the diaphragm pump alignment mark with the pressure

 cylinderbasealignmentmark(ﬁg.8).Theslotinthediaphragm

cover will also be in alignment.

DISASSEMBLING AND REPLACING THE DIAPHRAGM PUMP

Pivot Lever Connection

Figure 4

Diaphragm

Cover Slot

1)Assembledshut-ovalve(Figure1).

2) Remove the retaining pin (A) (Figure 2) place the notched end

of the retaining pin on a hard surface and push down. Remove the

retainingpinandslidethehandleothevalve.

3)Removetheretainingnut(o-ringattached),spring,andvalve

stem(B)(Figure3).Replacewornparts.LubricatetheO-rings

and reassemble by reversing the steps above. Place the handle

groove in the slotted area of the valve stem and make sure the

lockingclipispositionedintheneutralposition(see“Helpful

SprayingInformation”section).Inserttheretainingpin.Push

down on the handle a few times to distribute the lubricant evenly.

Checkﬁlter(C)inendofshut-ovalvefordebris.Removeﬁlter

andﬂushwithwatertocleanout.

Figure 3

Figure 1

Figure 2

Valve

Stem

DISASSEMBLING AND REPAIRING THE SHUT OFF VALVE

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