Graco ToughTek S340e User manual

3A7829A
EN
Instructions
ToughTek®SL340e Portable
Self-Leveling Underlayment Pump
Electric sprayer for water-based cementitious underlayment material. 
For professional use only.
Not approved for use in explosive atmospheres or hazardous locations.
600 psi (4.13 MPa, 41.3 bar) 
Maximum Fluid Working Pressure
See page 2 for model information and approvals.
Important Safety Instructions
Read all warnings and instructions in this
manual before using the equipment.
Save these instructions.
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Contents
23A7829A
Contents
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Component Identification . . . . . . . . . . . . . . . . . . . . 6
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Fluid Drain/Purge Valve . . . . . . . . . . . . . . . . . . . . 7
Motor Power Switch . . . . . . . . . . . . . . . . . . . . . . . 7
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Extension Cords. . . . . . . . . . . . . . . . . . . . . . . . . . 8
Power Requirements . . . . . . . . . . . . . . . . . . . . . . 8
Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Flush . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Mix the Material . . . . . . . . . . . . . . . . . . . . . . . . . 12
Prime with Material . . . . . . . . . . . . . . . . . . . . . . 12
Pouring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Pressure Relief Procedure . . . . . . . . . . . . . . . . . 14
Clearing a Clogged Hose. . . . . . . . . . . . . . . . . . 14
Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Lifting Instructions . . . . . . . . . . . . . . . . . . . . . . . 15
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Water Exposure . . . . . . . . . . . . . . . . . . . . . . . . . 16
Preventative Maintenance . . . . . . . . . . . . . . . . . 16
Corrosion Protection . . . . . . . . . . . . . . . . . . . . . 16
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Mechanical/Fluid Flow . . . . . . . . . . . . . . . . . . . . 17
Electrical. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Repair. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Replace Pump Components. . . . . . . . . . . . . . . . 22
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
SL340e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Control Box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Driver and Motor. . . . . . . . . . . . . . . . . . . . . . . . . 28
Replacement Parts and Accessories . . . . . . . . . . 30
Repair Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Recycling and Disposal . . . . . . . . . . . . . . . . . . . . . 32
End of Product Life . . . . . . . . . . . . . . . . . . . . . . .32
California Proposition 65 . . . . . . . . . . . . . . . . . . . . 32
Technical Specifications . . . . . . . . . . . . . . . . . . . . 33
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 34
Models
Related Manuals
Manuals are available at www.graco.com
Bare
Model
Electric
Requirements Country
25B509 120 V, 15 A, 50/60 Hz, 1 Phase North America
Manual in English Description
3A3112 ToughTek F340e Remote Switch Accessory Kit 17G554
3A5637 ToughTek Camlock Mortar Hose
3A4554 ToughTek Mortar Coupling Hose

Warnings
3A7829A 3
Warnings
The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The
exclamation point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks.
When these symbols appear in the body of this manual or on warning labels, refer back to these Warnings.
Product-specific hazard symbols and warnings not covered in this section may appear throughout the body of this
manual where applicable.
WARNING
ELECTRIC SHOCK HAZARD
This equipment must be grounded. Improper grounding, setup, or usage of the system can cause
electric shock.
• Turn off and disconnect power cord before servicing equipment.
• Connect only to grounded electrical outlets.
• Use only 3-wire extension cords.
• Ensure ground prongs are intact on power and extension cords.
• Do not expose to rain. Store indoors.
• Wait five minutes after disconnecting power cord before servicing.
FIRE AND EXPLOSION HAZARD
Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. Paint or
solvent flowing through the equipment can cause static sparking. To help prevent fire and explosion:
• Use equipment only in well-ventilated area.
• Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, a nd plastic dro p
cloths (potential static sparking).
• Ground all equipment in the work area. See Grounding instructions.
• Never spray or flush solvent at high pressure.
• Keep work area free of debris, including solvent, rags and gasoline.
• Do not plug or unplug power cords, or turn power or light switches on or off when flammable fumes
are present.
• Use only grounded hoses.
• Hold applicator firmly to side of grounded pail when triggering into pail. Do not use pail liners unless
they are anti-static or conductive.
•Stop operation immediately if static sparking occurs or you feel a shock. Do not use equipment
until you identify and correct the problem.
• Keep a working fire extinguisher in the work area.
MOVING PARTS HAZARD
Moving parts can pinch, cut or amputate fingers and other body parts.
• Keep clear of moving parts.
• Do not operate equipment with protective guards or covers removed.
• Equipment can start without warning. Before checking, moving, or servicing equipment, follow the
Pressure Relief Procedure and disconnect all power sources.
SUCTION HAZARD
Misuse can cause death or serious injury.
• Never place hands near the pump fluid inlet when pump is operating or pressurized.

Warnings
43A7829A
SKIN INJECTION HAZARD
High-pressure fluid from applicator, hose leaks, or ruptured components will pierce skin. This may look
like just a cut, but it is a serious injury that can result in amputation. Get immediate surgical
treatment.
• Do not point applicator at anyone or at any part of the body.
• Do not put your hand over the spray tip.
• Do not stop or deflect leaks with your hand, body, glove, or rag.
• Follow the Pressure Relief Procedure when you stop spraying and before cleaning, checking, or
servicing equipment.
• Tighten all fluid connections before operating the equipment.
• Check hoses and couplings daily. Replace worn or damaged parts immediately.
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
• Do not operate the unit when fatigued or under the influence of drugs or alcohol.
• Do not exceed the maximum working pressure or temperature rating of the lowest rated system
component. See Technical Specifications in all equipment manuals.
• Use fluids and solvents that are compatible with equipment wetted parts. See Technical
Specifications in all equipment manuals. Read fluid and solvent manufacturer’s warnings. For
complete information about your material, request Safety Data Sheets (SDSs) from distributor or
retailer.
• Do not leave the work area while equipment is energized or under pressure.
• Turn off all equipment and follow the Pressure Relief Procedure when equipment is not in use.
• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine
manufacturer’s replacement parts only.
• Do not alter or modify equipment. Alterations or modifications may void agency approvals and
create safety hazards.
• Make sure all equipment is rated and approved for the environment in which you are using it.
• Use equipment only for its intended purpose. Call your distributor for information.
• Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.
• Do not kink or over bend hoses or use hoses to pull equipment.
• Keep children and animals away from work area.
• Comply with all applicable safety regulations.
WARNING

Warnings
3A7829A 5
PRESSURIZED ALUMINUM PARTS HAZARD
Use of fluids that are incompatible with aluminum in pressurized equipment can cause serious
chemical reaction and equipment rupture. Failure to follow this warning can result in death, serious
injury, or property damage.
• Do not use 1,1,1-trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or
fluids containing such solvents.
• Do not use chlorine bleach.
• Many other fluids may contain chemicals that can react with aluminum. Contact your material
supplier for compatibility.
TOXIC FLUID OR FUMES HAZARD
Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, or
swallowed.
• Read Safety Data Sheets (SDSs) to know the specific hazards of the fluids you are using.
• Store hazardous fluid in approved containers, and dispose of it according to applicable guidelines.
PERSONAL PROTECTIVE EQUIPMENT
Wear appropriate protective equipment when in the work area to help prevent serious injury, including
eye injury, hearing loss, inhalation of toxic fumes, and burns. Protective equipment includes but is not
limited to:
• Protective eyewear, and hearing protection.
• Respirators, protective clothing, and gloves as recommended by the fluid and solvent manufacturer.
WARNING

Component Identification
63A7829A
Component Identification
Overview
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Ref. Description
A Electric Motor
B Pump Lower
C Fluid Drain/Purge Valve
F Fluid Outlet
H Flow Adjustment Knob
J Hopper
K Over-Center Latch
L Control Board Status Light
P Hopper Clamp
S Motor Power Switch
U Inlet Latch
Ref. Description

Component Identification
3A7829A 7
Fluid Drain/Purge Valve
To avoid injury from splashing fluid, never open a
cam-lock hose or applicator fitting while there is
pressure in the fluid line. Follow the Pressure Relief
Procedure on page 14.
Open the drain/purge valve (C) to relieve pressure if
pump or hose pack-out occurs, or to relieve pressure
inside the hose. Close valve when spraying.
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Motor Power Switch
The motor power switch (S) must be in the ON position
for the sprayer to pump material.
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S
Motor Power Switch Settings:
Power is disconnected. The motor will not run.
The motor will run continuously at a speed
determined by the flow adjustment knob.
NOTICE
To prevent material hardening in fluid drain/purge
valve, flush the valve after every time it is used. Failure
to flush prior to material curing in the system will result
in damage to the system and may require replacement
of all system parts in contact with the material. Follow
the Flush procedure on page 10.
OFF
ON

Grounding
83A7829A
Grounding
The equipment must be grounded to reduce the risk
of static sparking and electric shock. Electric or static
sparking can cause fumes to ignite or explode.
Improper grounding can cause electric shock.
Grounding provides an escape wire for the electric
current.
Ground the sprayer by plugging it into an outlet that is
properly installed and grounded in accordance with all
local codes and regulations. Do not modify the power
cord provided; if it does not fit the outlet, have the proper
outlet installed by a qualified electrician.
Extension Cords
• Use only a 3-wire extension cord that has a
grounding plug and a grounding receptacle that
accepts the plug on the product.
• Make sure your extension cord is not damaged. If
an extension cord is necessary, use 12 AWG (2.5
mm2) minimum to carry the current that the product
draws.
• An undersized cord results in a drop in line voltage
and loss of power and overheating.
NOTE: Certain GFCI outlets have been known to trip
while using this product. GFCI outlets have a range of
sensitivities. Motor controllers can cause false trips of
GFCI outlets. If you experience issues while using this
product, switch to a different GFCI model.
Power Requirements
Model Required
Power Source
Power
Cord Connectors
100–120 VAC,
50/60 Hz
Dedicated 15A or 20A circuit One NEMA 5–15P
Plug

Operation
3A7829A 9
Operation
Setup
To avoid tipping over, make sure the cart is on a flat
and level surface. Failure to do so could result in
injury or equipment damage.
1. Turn the motor power switch (S) to OFF.
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2. Ground sprayer (see Grounding, page 8). Plug the
power cord into a dedicated 15 amp or 20 amp, 120
V circuit.
3. Check Throat Seal Liquid (TSL) level in packing nut
(D). Fill 1/2 full with TSL.
4. Attach hose to applicator fluid inlet and pump fluid
outlet (F), then secure Velcro straps (V) around the
cam lock fitting.
5. Flush the system with water before using (follow the
Flush procedure on page 10).

Operation
10 3A7829A
Flush
Failure to flush prior to material curing in the system will
result in damage to system and may require
replacement of all system parts in contact with the
material.
If the fluid/drain purge valve has been used to relieve
pressure, the valve must be flushed to prevent material
hardening in fluid/drain purge valve. If that is not
sufficient, remove, disassemble, and clean the valve
then reinstall.
• Flush if the materials in the system are about to
reach their cure time.
• Flush any time the flow rate starts to decrease as
this is a sign that material is starting to thicken and
cure.
• Always flush the system at least twice, draining all
water between flushes then replacing with clean
water.
• Flush using water only.
WLD
1. Follow the Pressure Relief Procedure on page 14.
2. Place the hose outlet in a waste container. The
waste container must be large enough to hold all
dispensed material.
3. Turn motor power switch (S) on.
4. Turn adjustment knob (H) clockwise slowly to
increase pressure, until a steady stream flows from
applicator.
5. When the material level in the hopper is within a few
inches of the material inlet at the bottom:
a. Scrape the material down the sides of the
hopper.
b. Fill the hopper with water as the material runs
out and continue dispensing.
6. Keep the hopper filled with water while dispensing.
NOTE: Be prepared to decrease the flow
adjustment knob (H) when the material exiting the
hose changes to water.
7. When water begins to exit the hose outlet, turn the
motor power switch (S) to OFF to stop dispensing.
8. Place the hose outlet in the system hopper with the
outlet pointing down to enable fluid circulation.
NOTICE
NOTICE

Material left on the throat seal can dry out and damage
the seal. Always stop the pump at the bottom of the
stroke to avoid damage to the throat seal.
Operation
3A7829A 11
9. Circulate clean water:
a. Fill the system hopper with clean water.
b. Use a scrub brush to scrub the walls of the
hopper.
c. Turn the motor power switch (S) to ON to begin
circulating water.
d. While pumping, open the fluid drain/purge
valve. Allow the water to flush out any material
to prevent material hardening in the valve. Once
the water appears clean, close the fluid
drain/purge valve.
e. Turn the motor power switch (S) to OFF.
f. Place hose outlet in a waste container.
g. Turn the motor power switch (S) to ON to
dispense into a waste container.
h. Dispense into a waste container until hopper is
almost empty then turn the motor power switch
(S) to OFF.
i. Repeat this entire “Circulate clean water” step
one more time to ensure system is thoroughly
flushed.
10. Remove the remaining material with a hose
clean-out ball. See Driver and Motor on page 28
for a list of available clean-out balls and appropriate
hose sizes to use with them.
a. Place the hose outlet in the waste container.
b. Remove the hose inlet from the pump outlet and
place a hose clean-out ball within the hose inlet.
The ball must be wetted down before inserting.
c. Reattach the hose to the pump outlet and turn
the motor power switch (S) to ON to resume
flushing the hose.
d. The hose clean-out ball will be pushed out of
the hose after several minutes. Once the ball is
pushed through the hose, turn the motor power
switch (S) to OFF and repeat the entire process
listed in step 10 one time to ensure the system
is thoroughly flushed.
11. After performing the previous step at least twice,
drain remaining water from system:
a. Place a drain pan beneath pump lower inlet
connection.
b. Detach pump from hopper.
c. Use a screwdriver to lift the pump lower inlet
ball. This will drain the remaining material from
the pump lower. When the pump stops draining,
release the pump lower inlet ball.
d. Reattach pump to hopper.
e. Starting at the pump, raise the hose bundle
above your head and slowly move towards the
applicator. As you move towards the hose
outlet, the remaining fluid in the hose will drain
from the hose into the bucket.
12. Dispose of all waste material in accordance with
local codes and regulations. See manufacturer’s
SDS for additional information.
NOTICE

Operation
12 3A7829A
Mix the Material
Always follow the material manufacturer’s instructions
for the material being sprayed. Material must be
thoroughly mixed to a smooth consistency before
loading it in the hopper.
Managing Material After Mixing:
• Pay close attention to the work life of the material
being used.
• Only mix the material kits as needed. Do not let
mixed material sit longer than necessary.
• Scrape material down the sides of the hopper as the
hopper material level lowers. Do not let older
material cure on the walls.
• To ensure that all material in the hopper is used
while fresh, occasionally wait until the hopper is
almost empty before refilling.
Prime with Material
To prevent material curing in system, never load
material into a dry system. Loading material into a dry
system will cause the material to stick to internal
components and cure, causing damage and requiring
replacement of those parts.
Always push out any remaining water into a waste
container before circulating material. Always circulate
clean material back into the hopper for a few minutes
before beginning to pour.
To prevent damage to pump seals caused by
cavitation, run the pump slowly until the system is
primed.
1. Follow the Mix the Material instructions.
2. Turn the flow adjustment knob (H) counterclockwise
until it stops.
3. Fill the clean hopper with material to be sprayed.
4. Place the hose outlet in a 5 gallon waste container.
5. Turn the motor power switch (S) to ON.
6. Turn the flow adjustment knob (H) clockwise slowly
to increase pressure until water is purged out and a
steady stream of material flows from the hose.
7. To stop dispensing, turn the flow adjustment knob
(H) counterclockwise until it stops.
8. Place the hose outlet into the hopper.
9. Recirculate a few gallons of material to be sure the
material is flowing properly.
10. Turn the flow adjustment knob (H) counterclockwise
to stop the pump.
The system is now primed and ready to spray.
NOTICE
NOTICE

Operation
3A7829A 13
Pouring
Prevent Pack-out
To avoid “packing out” the pump or hose:
• Use the lowest pressure and largest nozzle size that
provides an acceptable flow rate. This will also
result in seals and wear parts lasting much longer.
• Do not use any more fluid hose than is necessary.
• Use an applicator with a rubber tip retainer that will
blow off if it plugs.
Before Starting or Stopping Material Flow
NOTE: If the ball valve kit (17J703) has been installed,
do NOT use the valve to stall the pump. The pump must
be stopped first before the ball valve can be closed.
Pumping
1. Follow the Mix the Material instructions on page
12.
Do not allow pump to run without material in the
hopper. It can cause damage to the pump seals.
Failure to flush prior to material curing in the system will
result in damage to system and may require
replacement of all system parts in contact with the
material.
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Failure to flush prior to material beginning to cure in the
system will result in damage to system and may require
replacement of all parts in contact with the material.
2. Follow the Prime with Material procedure on page
12.
3. Turn the motor power switch (S) to ON.
4. Turn flow adjustment knob (H) until desired flow is
reached. Turn clockwise to increase flow,
counterclockwise to decrease flow.
5. If the material is approaching its cure time or the
system will be idle for enough time for material to
begin curing in the system, flush the system. Follow
the Flush procedure on page 10.
NOTICE
NOTICE

Operation
14 3A7829A
Pressure Relief Procedure
Follow the Pressure Relief Procedure
whenever you see this symbol.
WLD
To avoid injury from splashing fluid, never open a
cam-lock hose or applicator fitting while there is
pressure in the fluid line.
1. Turn the flow adjustment knob (H) counterclockwise
until it stops.
2. Turn the motor power switch (S) off.
3. Hold the hose firmly against a pail.
4. If the ball valve kit (17J703) has been installed,
open the ball valve.
5. If you suspect the hose is completely clogged, or
that pressure has not been fully relieved after
following the previous steps, slowly open the fluid
drain/purge valve (C) at the pump outlet and drain
material into a waste pail.
Clearing a Clogged Hose
1. Follow the Pressure Relief Procedure.
To prevent damage from material hardening in the fluid
drain/purge valve, flush the valve after every use.
2. If you suspect there is a clog in the hose, disconnect
the hose at the connection farthest from the pump.
Continue to disconnect the hose back toward the
pump (upstream) until the hose with the clog is
reached.
3. To clear a clogged hose:
a. Disconnect the clogged hose from the pump if
not done already.
b. Use a rope or a strap to secure the clogged
hose to a permanent, stationary column.
c. Use a water hose to clear the clogged or dried
material from the material hose. Do not use a
hammer on the hose, or insert any potential
projectiles (such as sticks, rebar, etc) into the
hose end.
This equipment stays pressurized until pressure is
manually relieved. To help prevent serious injury from
pressurized fluid, such as splashing fluid and moving
parts, follow the Pressure Relief Procedure when you
stop spraying and before cleaning, checking, or
servicing the equipment.
NOTICE

Operation
3A7829A 15
Shutdown
To avoid injury from splashing fluid, never open a
cam-lock hose or applicator fitting while there is
pressure in the fluid line.
To prevent rust, never leave water or water-based fluid
in the pump overnight.
1. To shutdown, follow the Flush procedure on page
10.
2. Turn the motor power switch (S) to OFF.
Lifting Instructions
When lifting the unit, only lift at the points indicated by
the arrows shown in the illustration. Never lift with the
hopper attached.
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NOTICE

Operation
16 3A7829A
Maintenance
1. Follow the Flush procedure on page 10.
2. Clean the hopper with a scrub pad. Clean the
outside of the sprayer with a cloth and water.
3. Check hoses, tubes, and couplings for wear or
damage. Tighten all fluid connections before each
use.
4. Check and replace cam-lock gaskets as needed.
Water Exposure
Exposing the motor and/or control to water can cause
damage and possible motor failure. Do not store the
pump outside. Do not spray water directly into the
motor fan.
Preventative Maintenance
The operating conditions of your particular system
determine how often maintenance is required. Establish
a preventative maintenance schedule by recording
when and what kind of maintenance is needed, and
then determine a regular schedule for checking your
system.
DAILY: Check hose for wear and damage, and inspect
fluid lines for leaks.
DAILY: Check fluid drain/purge valve for proper
operation.
DAILY: Check level of Throat Seal Liquid (TSL) in
displacement pump packing nut/wet cup. Fill nut 1/2 full
with TSL. Maintain TSL level to help prevent material
buildup on piston rod and premature wear of packings
and pump corrosion.
Corrosion Protection
To prevent rust, never leave water or water-based fluid
in the pump overnight.
Material left on the throat seal can dry out and damage
the seal. Always stop the pump at the bottom of the
stroke to avoid damage to the throat seal.
Always flush the pump before the fluid dries on the
displacement rod. First, flush with water, then with oil.
Relieve the pressure, but leave the oil in the pump to
protect the parts from corrosion.
NOTICE
NOTICE
NOTICE

Troubleshooting
3A7829A 17
Troubleshooting
1. Follow the Pressure Relief Procedure on page 14.
2. Check all possible problems, causes, and solutions
listed below before disassembling the pump.
NOTE: For troubleshooting and repair questions,
contact your distributor.
Mechanical/Fluid Flow
Problem Cause Solution
The displacement pump
operates, but output is low on
the up stroke.
The piston ball check is not seating
properly.
Service the piston ball check.
Piston packings are worn or
damaged.
Replace the packings.
The displacement pump
operates, but output is low on
the down stroke and/or on both
strokes.
Piston packings are worn or
damaged.
Tighten the packing nut or replace the
packings.
The outlet check valve is not seating
properly.
Clean the check valve.
The intake valve ball check is not
seating properly.
Service the intake valve ball check.
The rubber elbow has an air leak. Tighten the elbow clamps.
Material leaks and runs over the
side of the wet cup.
The wet cup is loose. Tighten the wet cup enough to stop
leakage.
Throat packings are worn or
damaged.
Replace the packings.
Fluid delivery is low. The applicator tip is dirty or clogged. Clean or replace the applicator tip.
Clamps on the hopper hose are
loose.
Tighten the clamps on the hopper hose.
Large pressure drop in the fluid hose. Reduce the hose length or increase the
fluid hose diameter.
The electric motor does not
operate.
The power switch is not ON. Turn the power switch ON.
The circuit breaker has been tripped. Check the circuit breaker at the power
source. Reset the motor switch.
The sprayer does not operate. The fluid hose is obstructed. Clean the fluid hose.
Dried fluid on the displacement rod or
inlet ball.
Clean the displacement rod. Always stop
the pump at the bottom of the stroke.
Keep the wet cup filled with TSL. Be sure
the inlet ball moves freely.

Troubleshooting
18 3A7829A
Speed is erratic and/or
accelerated.
The material supply has been
exhausted, or clogged the suction.
Refill the hopper and prime the pump.
The piston valve or packings are
worn or open.
Clear the piston valve and replace the
packings.
The intake valve is worn or open. Clear or service the intake valve.
The pump cycles or fails to hold
pressure at stall.
Check balls, seats, or piston
packings are worn.
Service the lower pump.
Poor finish or irregular spray
pattern.
The atomizing air pressure is
inadequate.
Adjust the air needle valve on the
applicator (see your applicator manual).
The spray applicator is dirty, worn, or
damaged.
Service the spray applicator (see your
applicator manual).
The motor is powered but
nothing comes out of the hose.
The pump is packed out with dry or
cured material.
Disassemble and clean the pump.
Reverse the hose and try to push out the
bad material.
Some materials may only require 1 in.
inner diameter fluid line all the way to the
outlet.
The outlet check valve has been
installed backwards.
Re-install the outlet check valve in the
proper orientation.
Material is too thick to push
through the hose without
packing out.
The hose is too restrictive. Thin and mix material thoroughly to lower
the viscosity.
Use a pump system priming fluid (slime).
Wet out the system.
Use a larger diameter hose.
Problem Cause Solution

Troubleshooting
3A7829A 19
Electrical
Problem Cause Solution
The control board status light blinks
four times repeatedly.
The control board is detecting
multiple voltage surges.
Check voltage supply to the sprayer:
1. Turn the motor power switch (S)
to OFF and unplug the sprayer.
2. Locate a good voltage supply to
prevent damage to electronics.
The control board status light blinks
five times repeatedly.
Check for line obstruction or pack
out. The motor is powered but not
able to turn.
Remove obstruction and cycle power
off and on. If the problem continues,
contact your local distributor
The outlet check valve is installed
backwards.
Install the outlet check valve in the
proper orientation
The control board status light blinks
six times repeatedly.
The motor is overheating. Allow the sprayer to cool. If the
sprayer runs when cool, correct the
cause of overheating. Keep the
sprayer in a cooler location with good
ventilation. Make sure the motor air
intake is not blocked. If the sprayer
still does not run, contact your local
distributor.
The control board status light blinks
eight times repeatedly.
Incoming voltage is too low for
sprayer operation.
Check voltage supply to the sprayer:
1. Turn the motor power switch (S)
to OFF and unplug the sprayer.
2. Remove other equipment that
uses the same circuit.
3. Locate a good voltage supply to
avoid damage to electronics.
The control board status light blinks
ten times repeatedly.
The control board is overheating. 1. Make sure the motor air intake is
not blocked.
2. Make sure the fan has not failed.
3. Make sure the control board is
properly connected to the back
plate and that conductive thermal
paste is used on power
components.
4. Replace the control board.
5. Replace the motor.
The control board status light blinks
12 times repeatedly.
Excessive current protection is
enabled.
Cycle the power on and off.
WLD

Troubleshooting
20 3A7829A
The control board status light blinks
15 times repeatedly.
Connections above the motor may be
loose or damaged.
1. Set the motor power switch (S) to
OFF and unplug the sprayer.
2. Remove the motor shroud.
3. Disconnect the motor control and
inspect for damage at the
connectors.
4. Reconnect the motor control.
5. Turn the motor power switch (S)
to ON. If the blinking code
continues, replace the motor.
The control board status light blinks
16 times repeatedly.
Check the connections. Check for
water in the sensor. The control is not
receiving the motor position sensor
signal.
1. Set the motor power switch (S) to
OFF and unplug the sprayer.
2. Remove the motor shroud.
3. Disconnect the motor control and
inspect for damage at the
connectors.
4. Inspect the sensor for water. If
the sensor is wet, let it dry for 24
hours.
5. Re-install the sensor, motor
control connections, and shroud.
6. Turn power ON. If the problem
continues, replace the motor.
The control board status light blinks
17 times repeatedly.
The sprayer is plugged into the
wrong voltage.
1. Set the motor power switch (S) to
OFF and unplug the sprayer.
2. Locate a good voltage supply to
avoid damage to electronics.
The incoming power supply circuit is
repeatedly tripped.
The circuit uses a ground fault circuit
interrupter (GFCI).
Certain 120 V GFCI outlets have
been known to trip while using this
product. GFCI outlets have a range
of sensitivities. Motor controllers can
cause false trips of GFCI outlets. If a
GFCI circuit has tripped, connect to
an outlet with a different GFCI model.
Problem Cause Solution