Page 1
Owner’s Manual
ESS Model GPS-5
Electrostatic
Spraying Systems
Owner’s Manual
ESS Model GPS-5
Page 2
OWNER’S MANUAL
GPS5
Electrostatic Spraying Systems, Inc.
62 Morrison St. · Watkinsville, GA 30677-2749
CE certication applied for
Copyright © 2008, Electrostatic Spraying Systems, Inc. – All Rights Reserved
This manual last updated May 28, 2014
Page 3
A Kaibab Industries Company
CONGRATULATIONS!
You have just purchased one of the most advanced spraying systems
on the market today. Electrostatic Spraying Systems, Inc.1 (ESS) is
committed to providing you with powerful spraying systems that are
easy to operate and maintain.
The products of ESS are the result of the eorts and creativity of many
people. In addition to input from engineering, marketing and manufacturing personnel, suggestions from our customers have been implemented into the design of our equipment. We would like to hear your
ideas also! If you have any suggestions or comments regarding the
products or service of ESS write or call us at:
Electrostatic Spraying Systems, Inc.
62 Morrison St.
Watkinsville, Georgia 30677-2749
Phone: 706-769-0025
1-800-213-0518
Fax: (760) 769-8072
support@maxcharge.com
Please take time to read this manual before operating your new ESS
GPS-5™ sprayer. The manual contains important instructions for the
safe operation of this equipment. It also includes helpful suggestions
to maximize productive use of the GPS-5 sprayer. Essential cleaning
instructions should be followed to maintain your sprayer at peak efciency. Please carefully read and follow all instructions for your own
safety and the safety of others around you.
Thank you!
We appreciate your business and are proud that you have selected an
ESS sprayer for your operation.
Your new sprayer has been thoroughly tested and calibrated at the
factory. If you have any problems with it, please get in touch with us
immediately. We will be glad to answer any questions you have concerning our equipment or service. ESS intends to support its customers
with ecient, helpful and friendly service. We appreciate your business
and sincerely hope that Electrostatic Spraying Systems, Inc. can meet
your present and future spraying equipment needs.
We encourage you to make copies of the “Spray Gun Yearly Service”
form in the back of this manual. Use this form every year you
send your gun in for maintenance and when we service the gun,
your warranty will renew for another year. The service will replace
the nozzle base, replace air and liquid hoses inside gun housing,
replace lters, and recalibrate the gun and thoroughly cleaning the
entire spray gun.
1
ESS GPS-5 Sprayer™, GPS-5™, MaxCharge™, and the ESS logo are copyrights or registered
trademarks of Electrostatic Spraying Systems, Inc.
For your personal records
Please record the model
and serial numbers of your
new sprayer here.
GPS-5
______________________
Model #
______________________
Serial #
______________________
Spray gun serial number
______________________
Date of purchase.
ESS GPS-5 OWNER’S MANUAL
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ESS GPS-5 OWNER’S MANUAL
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TABLE OF CONTENTS
Overview of the ESS GPS-5 Air-assisted Electrostatic Sprayer ............ 1
Safe operation of the GPS-5 Sprayer ............................................................ 2
Operator’s responsibility ........................................................................... 2
Safety precautions ...................................................................................... 2
Chemical safety precautions ................................................................... 2
About the low-voltage system of the MaxCharge spray gun ............. 3
Safety decals ......................................................................................................... 4
Features of the GPS-5 sprayer ......................................................................... 5
Technical specications ............................................................................ 5
Operating Instructions ...................................................................................... 6
Unpacking and assembling the sprayer ............................................. 6
Before use ....................................................................................................... 7
Steps for operation ..................................................................................... 8
After spraying ............................................................................................... 9
GPS-5 maintenance schedule .......................................................................10
REFERENCE SECTION
Engine ....................................................................................................................11
Compressor .........................................................................................................12
Compressor air lter .................................................................................12
Tank pressure regulator ..................................................................................13
Pop-o valve .......................................................................................................13
Tongue handle ...................................................................................................13
Hose reel and liquid inlet lter .....................................................................14
Stainless steel tank ............................................................................................15
Quick connects ................................................................................................... 16
How to store the hose quick-connects when not in use ....................17
Spray gun .............................................................................................................18
Air lter ..........................................................................................................18
Trigger ...........................................................................................................19
Liquid lter assembly ...............................................................................20
Nozzle assembly ........................................................................................21
Pre-spray check ..................................................................................................22
Post-spray check ................................................................................................22
Batteries ................................................................................................................23
Yearly spray gun service ..................................................................................24
Spraying with your ESS sprayer... ................................................................. 25
Preparing a tank mix ........................................................................................26
Chemical compatibility ...................................................................................27
A note about operating temperatures ......................................................27
Trouble-shooting Guide .................................................................................29
GPS-5 spray gun service parts (drawing) .................................................. 30
GPS-5 spray gun service parts (key)............................................................31
Flow disk chart ...................................................................................................31
GPS-5 exploded view (drawing) ...................................................................32
GPS-5 service parts ........................................................................................... 33
Warranty ...............................................................................................................35
Warranty card ............................................................................................35a
Spray gun repair/Yearly service return form ............................................37
Spraying with the GPS-5.
ESS GPS-5 OWNER’S MANUAL
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ESS GPS-5 OWNER’S MANUAL
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Overview of the ESS GPS-5
Air-assisted Electrostatic Sprayer
Air-assisted electrostatic sprayers produce electrically charged spray
drops that are carried to the plant canopy in a low pressure, gentle, air
stream. The heart of the GPS-5 is the patented MaxCharge™ nozzle.
Air and liquid enter separately at the rear of the nozzle. Just before
leaving the nozzle, the air hits the liquid stream to make many thousands of tiny spray droplets that pass through the charging ring. An
electrical charge is applied to the spray droplets by the charging ring.
Then the charged spray droplets are blown out of the nozzle and
move into the plant canopy where they are attracted to plant material
by electrostatic forces. The electrostatic charge induced by the MaxCharge™ nozzle is strong enough to allow the droplets to move in any
direction to cover all plant surfaces, even defying gravity to coat the
underside of leaves and the back side of fruits and vegetables. The result is uniform spray coverage on hidden areas deep inside of the plant
canopy where other sprayers miss.
The MaxCharge™ nozzle is easy to clean and corrosion-proof. The interior ceramic outlet resists wear three times better than stainless steel
outlets. These features combine to give the best spray coverage on the
market. This quality product is virtually maintenance-free, and assures
you of savings in the application of chemical.
The comparison of air-assisted electrostatic spraying versus conventional spraying is dramatic.
Where Does the Spray Go?
The University of California completed a series of tests to investigate what happens to spray liquid after it leaves the nozzle.
Conclusion: ESS technology places over 4 times the amount of
spray onto the plant surface using ½ the amount of chemicals.
Furthermore, they also reported that ESS sprayers send ⁄ less
chemicals to the ground and into the air. Less chemical used
overall, less waste and less drift than conventional equipment.
Imagine the environmental benet!
Electrostatically charged droplets are
attracted to plant surfaces.
ESS GPS-5 OWNER’S MANUAL
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Safe operation of the GPS-5 Sprayer
OPERATOR’S RESPONSIBILITY
Read the Owner’s Manual.
It is the responsibility of the user to read the Owner’s Manual, to understand the
safe and correct operating procedures which pertain to the operation of the product, and to maintain the product according to the Owner’s Manual. It is the owner’s
responsibility to ensure that all who are using this equipment read this manual.
The user is responsible for inspecting the equipment and for repairing and replacing
damaged or worn parts to prevent damage or excessive wear to other parts. It is the
user’s responsibility to deliver the machine for service or replacement of defective
parts which are covered by the standard warranty.
SAFETY PRECAUTIONS
Lack of attention to safety can result in reduced eciency, accident, personal injury, or
death. Watch for safety hazards and correct deciencies promptly. Use the following safety
precautions as a guide when using this machine.
Read the Owner's Manual. Failure to read the manual is considered a misuse of the equipment.
Use the GPS-5 sprayer ONLY for its intended use as described in this manual.
Before operating equipment, become familiar with all caution and warning decals axed to the sprayer.
Do not allow a child to operate the GPS-5 sprayer. Do not allow adults to operate the sprayer without
proper instruction.
Keep the area of operation clear of all persons and animals.
Do not apply chemicals when weather conditions favor drift from treated areas.
Turn o the sprayer when leaving it unattended.
Store sprayer in a dry place. Do not expose to freezing temperatures.
CHEMICAL SAFETY PRECAUTIONS
Read and follow all instructions on the chemical or pesticide manufacturer’s label.
Use protective clothing, eye protection and gloves when mixing chemicals and while spraying with
the GPS sprayer.
Always use a cartridge respirator, protective clothing and eye protection when spraying with the GPS-5.
Follow the chemical manufacturer’s recommendations in handling, mixing, applying, storing and
disposing of chemicals.
Be aware of decontamination methods in case a person, clothing, or equipment is accidentally
sprayed.
Be aware of poisoning symptoms and know the appropriate rst aid.
Know the length of time needed to pass before allowing people and pets to go back into the
sprayed area.
ESS GPS-5 OWNER’S MANUAL
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About the low-voltage system of the MaxCharge™ spray gun
For operator safety, the MaxCharge spray gun is powered by a lowvoltage power supply. The rechargeable 9-volt batteries are in the
handle of the GPS-5 spray gun. The electrostatic charge imparted to
the spray is not strong enough to harm people. Some people report
feeling a “tingle” or a slight stinging sensation when the spray from the
nozzle falls on their bare skin.
9v
Location of 9-volt rechargeable
battery pack in the handle of the
spray gun.
Some owners report that they sometimes get a static shock when
spraying in an enclosed area. ESS wants to emphasize that these static
shocks, although sometimes unpleasant, are not at all dangerous to
people. They are simply an unfortunate consequence of spraying with
an electrostatic sprayer in an enclosed area. When you spray charged
particles onto other objects, some of the charge gets on you, or else
an opposite charge may be drawn up from the ground, depending on
the circumstances.
Here are some things to do to minimize static discharges. First make
sure that the sprayer is properly grounded. Your sprayer has a short
chain attached to the bottom of its case. It is important that this chain
touch the oor during use. If the chain is broken or missing, replace it.
Try misting the oor of the greenhouse or room with plain water
before spraying.
Pay attention to the exact conditions in which the shocks happen.
You may nd that you can prevent them by keeping your nger on
the metal trigger of the sprayer, rather than just holding its plastic
body. If the shocks happen only when you subsequently touch a piece
of equipment, try touching a painted or plastic part of it before you
touch metal.
You could also try wearing a dierent type of shoe. Leather will conduct better than rubberized soles and may lessen the problem.
Avoid touching sensitive electronic equipment such as computers,
printers, or cell phones while spraying . A static discharge could damage them.
ESS GPS-5 OWNER’S MANUAL
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Safety decals
Appropriate safety decals are placed on ESS equipment in order to
alert the operator to possible dangers. If decals are missing, please
contact ESS immediately for replacement decals.
¡
WARNING!
AGRICULTURAL CHEMICALS CAN BE
DANGEROUS. IMPROPER SELECTION
OR USE CAN SERIOUSLY INJURE
PERSONS, ANIMALS, PLANTS, SOIL OR
OTHER PROPERTY.
BE SAFE:
·
SELECT THE RIGHT CHEMICAL
FOR THE JOB.
·
HANDLE IT WITH CARE.
·
FOLLOW THE INSTRUCTIONS
ON THE CHEMICAL
MANUFACTURER’S LABEL.
WARNING!
·
DO NOT REMOVE TANK LID OR
RELEASE TANK PRESSURE WHILE
COMPRESSOR IS RUNNING.
·
RELEASE TANK PRESSURE BEFORE
REMOVING LID OR TANK HOSE
CONNECTIONS.
·
KEEP FACE AWAY WHEN RELEASING
PRESSURE AND WHILE REMOVING
TANK LID.
·
DO NOT OVERFILL TANK.
·
FILL TO 4 INCHES (10 CM) FROM TOP
OF TANK WHEN USING TANK
AGITATOR SYSTEM.
PRECAUCIÓN!
LOS PRODUCTOS QUÍMICOS AGRÍCOLAS
PUEDEN SER PELIGROSOS. LA SELECCIÓN O EL
USO INAPROPIADOS PUEDEN LESIONAR
SERIAMENTE A LAS PERSONAS, LOS ANIMALES,
LAS PLANTAS, LA TIERRA U OTRA PROPIEDAD.
TENGA CUIDADO:
·
SELECCIONE EL PRODUCTO QUÍMICO
CORRECTO PARA EL TRABAJO.
· MANÉJELO CON CUIDADO.
· SIGA LAS INSTRUCCIONES DE LA ETIQUETA
DEL FABRIC ANTE DEL PRODUCTO
QUÍMICO.
¡
PRECAUCIÓN!
·
NO RETIRE LA TAPA DEL TANQUE NI LIBERE LA
PRESIÓN DEL TANQUE MIENTRAS LA COMPRE
SORA ESTÉ FUNCIONANDO.
·
LIBERE LA PRESIÓN DEL TANQUE ANTES DE
RETIRAR LA TAPA O LAS CONEXIONES DE LA
MANGUERA DEL TANQUE.
·
MANTENGA EL ROSTRO ALEJADO CUANDO LIBERE
LA PRESIÓN Y MIENTRAS RETIRA LA TAPA DEL
TANQUE.
·
NO SOBRELLENE EL TANQUE.
·
LLÉNELO HASTA 10 CENTÍMETROS (4 PULGADAS)
DE LA PARTE SUPERIOR DEL TANQUE CUANDO
USE EL SISTEMA AGITADOR DEL TANQUE.
READ AND FOLLOW THE CHEMICAL
MANUFACTURER’S INSTRUCTIONS
CAREFULLY.
It is extremely important for the owner/
operator’s safety as well as the safety
of other people in the vicinity that all
chemical safety precautions are followed.
CAUTION:
The stainless steel tank
operates under pressure.
This decal describes important information on correct use of the tank and its
agitator.
DANGER!
MOVING PARTS CAN
CRUSH AND CUT
Do NOT operate with
guard removed.
Do NOT place hands
or fingers under guard.
CLEAN
FILTER
REGULARLY
REMEMBER TO DISASSEMBLE AND CLEAN
THE FILTERS REGULARLY.
The performance of your GPS sprayer
can suer if the lters are not kept clean.
¡
PELIGRO!
MANTÉNGASE
ALEJADO
Zona de protección para
evitar riesgos. No opere
este equipo sin todas sus
protecciones instaladas.
DO NOT RUN THE SPRAYER WITHOUT
ALL GUARDS IN PLACE.
Serious injury can result.
This decal is located on the belt guard.
Do not operate your sprayer without
this guard in place. If the decal is missing, please contact ESS immediately for
a replacement decal.
This label is placed on the charger of all
sprayguns.
ESS GPS-5 OWNER’S MANUAL
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Features of the GPS-5 Sprayer
Designed for the needs of larger commercial greenhouses
and coee growers
Can be pulled by hand or
towed with small vehicle
6.5 hp Briggs & Stratton
gasoline engine
MaxCharge™ Spray gun
Heavy-duty wheels
All-metal frame features durable welded
construction and powder-coated nish
Spray up to 40,000 sq. ft. per hour
18.9 liter (5-gallon)
Stainless-Steel tank
Compatible with all conventional chemicals and fungicides
Self-contained — does not
need an external air supply
47.5 meter (150 feet)
twin-line hose
About your GPS-5 sprayer
The GPS-5™ is a self-contained
unit. The engine provides
power to the compressor to
produce pressurized air. This
air passes through the radiator, is cooled, and follows two
dierent routes from a black
iron tee. One route goes to the
hose reel and in the red hose
of the twin-line hose. The other
route goes to the tank pressure
regulator and then to the tank.
When the engine is on and the
tank pressure regulator is set
between 12-15 PSI, the tank is
continuously pressurized and
agitated to prevent separation
and settling of the chemical.
From the tank, the line goes to
the hose reel and in the gray
hose of the twin-line hose. The
twin-line hose, which carries
pressurized liquid and air lines
feeds into the spray gun. The
liquid combines with the pressurized air and atomizes into
40 micron VMD (volume mean
diameter) drops. The droplets
are electrostatically charged
and sprayed from the nozzle
assembly. Due to the electrostatic charge, the droplets are
attracted to all plant surfaces in
the direction that the handgun
points, including the back of
leaves and foliage deep within
the canopy.
Technical specications
Nozzles 1
External air supply required No
Electricity required No
Standard hose length 150 ft. (45.7 m.)
Weight empty 230 lbs. (104.3 kg.)
Weight full 270 lbs. (122.5 kg.)
Shipping weight 350 lbs. (158.8 kg.)
Main tank capacity 5 gal. (18.9 L.)
Air line pressure 50 to 60 PSI
ESS GPS-5 OWNER’S MANUAL
(3.5 kg./cm to 4.2 kg./cm)
Dimensions 40” H × 22” W × 42” L
(1 m. × 0.6m. × 1.1m.)
Tank Pressure 12 – 15 PSI
(0.8 – 1.1 kg./cm2)
Flow rate 4 gal./hr. (15.1 L../hr.)
Drop size 40 microns
Spray range 15 to 20 ft.
(4.6 m. to 6.1 m.)
Available options 250 ft. (76.2 m.) hose
2 or 3-headed spray guns
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Operating instructions
ALL OPERATORS must read this Owner’s Manual completely
and thoroughly before operating the GPS-5 sprayer. They
must be familiar with all operating instructions and safety
precautions.
Unpacking and assembling the sprayer
In the shipping box there should be:
one GPS-5 sprayer
one spray gun in a box,
one handle,
four wheels, and
one GPS-5 Parts Kit.
The sprayer is fastened to the shipping pallet with cable ties. Cut the
ties to remove the sprayer. The GPS wagon has had its handle and
wheels removed for shipping. To prepare the cart for operation, fasten
the handles and wheels onto the wagon.
Carefully open the spray gun box, remove the spray gun, and unwrap
the bubble wrap from the spray gun. Store the box and bubble wrap
for future shipping. You will need this box to return the spray gun for
its Yearly Service.
The hardware to reattach the handle
and wheels is in your Parts Kit box.
The Parts Kit contains a collection of small parts commonly needed to
maintain and repair your GPS-5 sprayer as well as the battery charger
for the spray gun, a spray gun shoulder pad, and the GPS-5 Owner’s
Manual. Please store your Parts Kit in a safe place for future use.
Among the items in the Parts Kit you will nd one extra ow disk and
one extra strainer. We call your attention to these parts because they
are indeed very small and easy to overlook; however they are essential
for your sprayer to run correctly. (See the section about the air lter
for detailed instructions on cleaning and replacing the air lter. See
the section on the liquid lter to clean or replace the ow disk and the
strainer.)
A warranty registration card is bound into the manual after the
Warranty page. After unpacking the sprayer, please take time to ll this
card out and send it in to ESS. This will insure your warranty protection
in the event anything happens to your sprayer or handgun.
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Before use
The engine and the air compressor have been lled with the proper
lubricant at the factory. However, their lubricant levels must be
checked before the GPS-5 is operated. If they need to be replenished,
use 30 weight compressor oil in the compressor and 10W-30 oil in the
engine. Fill the gasoline engine tank with unleaded gasoline.
Visually check the gasoline tank fuel
level before each spray application.
Please consult the Briggs and Stratton
gasoline engine manual for detailed
instructions on
maintaining
operating and
of the engine.
Check the engine
oil level before each
spray application.
The Tank Pressure Regulator
controls the pressure in the
tank. Set the tank pressure to
12-15 PSI.
To check the engine oil level, unscrew the yellow
plastic plug. Oil level should be up to the lip of the
ll hole.
Check the compressor
oil level before each
spray application.
To check the compressor oil, remove the 7/16”
plug. Oil level should be up to the lip of the hole.
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To set the tank pressure:
Start engine. Pull the adjustment knob’s black plastic cover to unlock it. Turn left (counter-clockwise) to decrease pressure; turn right
(clockwise) to increase pressure. Set the pressure between 12 to 15 PSI
(marked in light green). Push the black plastic cover in to lock the new
setting.
The Tank Quick Connects connect the tank to the incoming
airline and outgoing liquid line.
The Spray Gun Quick Connect Plugs attach to the
Spray Gun Quick Connect Sockets.
Steps for operation
1. Check oil level in engine; add oil if needed
2. Check gas level in engine tank; add gas if needed
3. Check oil level in compressor; add oil if needed
4. Prepare the tank mix. Open tank. Pour mix in. Close tank
5. To start the engine, Turn the engine ON. Set the Run/Choke
Control to CHOKE (far right) and the Engine Speed Control
to FAST (to the right) before pulling the starter cord. After
the engine engages, move the Run/Choke control to Run
(towards the left).
6. Set the tank pressure to 12-15 PSI.
7. Connect the air line hose to the air connection from the
compressor to air leader on the spray gun.
8. Connect the liquid line hose from the tank to the liquid
leader on the spray gun.
Engine/Compressor
Pre-spray check
9. Aim spray gun and engage the trigger; lock trigger if
desired. Spray with even, sweeping strokes.
NOTE: It may take about a few moments for air to clear
the lines before liquid sprays regularly without air bubbles.
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After spraying:
1. Disengage trigger.
2. Turn engine o.
3. Open stainless steel tank; clean its interior and exterior;
ll tank with 5 liters (1.25) gallons of clean water; close tank
4. Disconnect air and liquid spray gun quick connects.
5. Disassemble liquid lter assembly; set aside.
6. Put liquid quick connect plug (which is still threaded in
1/8 inch NPT body) into liquid quick connect socket;
water will begin to run out of quick connect plug;
allow 4 liters (1 gallon) to run through to clean lines.
7. Unplug liquid quick connect plug from liquid quick connect
socket to stop ow of liquid.
8. Clean liquid lter assembly.
9. Reassemble liquid lter assembly.
10. Reconnect quick connects.
11. Turn engine on.
12. Engage trigger and allow remaining liter (approximately
1 quart) of water to run through to clean spray gun; allow
air to ow for 30 seconds more to reduce possibility of
corrosion.
13. Turn engine o.
14. Disconnect spray gun quick connects.
15. Disconnect the air hose from the air compressor.
16. Apply silicone spray or similar lubricating oil to all
quick connects.
17 Clean the nozzle assembly.
18. Check compressor air lter; clean if needed.
Sil-Glyde is an excellent silicone-based
protective lubricant. You may purchase
it directly from ESS. S/N # 3174
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GPS-5 maintenance schedule
Please observe the recommended maintenance schedule for your GPS-5 sprayer in order to preserve
spray quality and the working life of the unit. If you use heavy wettable powders to spray or if you operate
the GPS-5 in a dusty environment, you may need to clean liquid and air lters more often than these recommendations. Visually inspect the nozzle and trigger assembly often and clean as necessary.
Check engine oil level and add oil as needed Before every spray application
Check compressor oil level and add oil as needed Before every spray application
Clean the liquid lter at hose reel and spray gun After every spray application
Clean the nozzle When spray pattern is dierent than when the
GPS-5™/GPS-5™ was new
Recharge batteries in spray gun When charging indicator does not light during
operation (about every 8 operational hours)**
Replace batteries in spray gun When batteries no longer hold a sucient
charge to complete a ten-hour work session
or show other signs of battery deterioration
Service air cleaner cartridge in engine Every 25 operational hours OR every season**
Change engine oil After rst 5 operational hours, then every
50 operational hours OR every season**
Clean and replace air lter in compressor Every 75 operational hours OR if dirty**
Clean spark plug in engine Every 100 operational hours OR every season**
Change compressor oil Every 100 operational hours OR if dirty**
Check and tighten bolts Every month
Check compressor air intake lter; clean as needed After every spray application
** Whichever comes rst
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REFERENCE SECTION
Engine
The GPS-5™ uses a 6.5 horsepower Briggs & Stratton gasoline engine
to power the air compressor. Before each spray operation, the gas and
oil levels should be checked. Use lead-free gasoline and 10W-30 detergent oil. Follow the Maintenance Schedule on page 9 for periodic
engine maintenance procedures.
Manifold & Shield
CAUTION HOT
Engine Choke
control
Gasoline ll cap
ON/OFF switch
Throttle
Speed control
Pull cord
Oil ll/Oil check
(visible from
other side)
Oil drain
To start engine:
1. Turn ON.
2. Set the Engine Choke control to Choke (to the far right).
2. Set the Throttle Speed control to Fast (to the far right;
indicated by a rabbit icon.).
3. Pull the starter cord.
4. After the engine engages, move the Engine Choke control to
run (far left).
To stop engine:
1. Move Throttle Speed control towards the turtle icon (slow)
at the left.
2. Turn ON/OFF switch to OFF.
Note: Do not use choke to stop engine, as a backre or engine damage
may result.
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Compressor
The compressor produces pressurized air which is used to atomize and
propel the liquid spray. The oil level should be checked before each
spray application. Use only 30-weight compressor oil in the compressor. Follow the Maintenance Schedule on page 10 for periodic engine
maintenance procedures.
To check the compressor oil, remove the 7/16” oil ll plug. Oil level
should be up to the lip of the hole.
Compressor air lter
The compressor has an air intake lter located on the front side of the
compressor. This lter should be checked regularly. If it gets clogged,
it will cause the compressor to overheat. Take note of the conditions
you are spraying in. The lter will need to be cleaned more often if it’s
dusty.
DANGER
HOT
NOTE:
The GPS-5 engine and compressor
become hot during normal use.
To clean the compressor air lter:
Make sure the compressor has cooled down.
Remove lter from the compressor.
Use compressed air to clean the lter, blowing from the inside
surface to the outside.
Replace the lter in its holder, felt side in.
When the lter can no longer be cleaned eectively with compressed
air, replace it. A spare lter is in your parts kit..
The replacement compressor air lter is available from ESS. Order
S/N #4218.
ESS GPS-5 OWNER’S MANUAL
Location of the compressor air intake
lter.
Cleaning the compressor air lter with
compressed air.
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Tank pressure regulator
The tank pressure regulator controls the amount of pressure in the
tank pressure line. Optimum tank pressure is 12-15 PSI.
To set the tank pressure:
Start engine. Pull the adjustment knob’s black plastic cover to unlock it. Turn left (counter-clockwise) to decrease pressure; turn right
(clockwise) to increase pressure. Set the pressure between 12 to 15 PSI
(marked in light green). Push the black plastic cover in to lock the new
setting.
Note: For best results, set the pressure from a lower pressure to a higher pressure. If the pressure is set too high, adjust the regulator below
the desired pressure then adjust it up to the desired pressure.
Pop-off valve
The GPS-5™ has a 100 PSI spring-loaded pop-o valve which is connected to the tank pressure regulator. The valve relieves pressure
greater than 100 PSI to protect the sprayer from being damaged by
extreme air pressure.
If the pop-o valve blows, shut o the sprayer immediately. Determine the cause of the out-of-range air pressure and repair. Replace the
pop-o valve (ESS S/N 62).
Tongue handle
The tongue handle can be pulled by hand or attached to a small motorized vehicle for towing. In order to pull the sprayer, the vehicle
must have a hole on the back of its chassis frame for a pin. Place a pin
through the hole in the tongue handle and through the hole in the
vehicle to pull the sprayer.
Keep safety in mind and use common sense when towing the GPS-5.
Do not allow passengers to ride the GPS-5. Do not exceed a safe speed
for the conditions and terrain. Use caution on turns and sharp curves
as the sprayer may tip over.
NOTE: ESS will not be held responsible for accidents that
occur as a result of hazardous operations.
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Hose reel and liquid inlet filter
The hose reel contains the twin line hose running from the main unit
to the handgun. Air (red hose) and liquid (gray hose) are plumbed into
the hose reel from the compressor and liquid tank. There is a lter
attached to the liquid inlet on the hose reel. The lter consists of a
strainer, O-ring (installed on cap) , and bowl-shaped cap. Periodically
check and clean this lter to clear any debris that accumulates there.
Replace the O-ring when it become worn.
The cap turns counter-clockwise (to the left) to open and clockwise (to
the right) to close.
How to tell the cap end of the strainer
It’s important to replace the strainer in the correct direction. Carefully
examine the ends of the strainer. If you can see the terminus of the interior plastic ribs, that’s the “open” end. If there is a smooth plastic ring, that
is the “closed” end. Place the closed end into the lter cap (Remember:
CLOSED to CAP).
Liquid inlet lter
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Stainless steel tank
The GPS-5 has a 5-gallon (18.9 liter) stainless steel tank. When the compressor is operating and the tank pressure gauge is set between 12-15
PSI, the liquid in the tank is continuously agitated. This helps prevent
separation and settling of the chemical mixture.
There is a pressure release valve lever on the tank lid that allows the
operator to release pressure in the tank before opening. When the
lever is horizontal, the tank is pressurized; when the lever is vertical,
the tank is not pressurized and can be safely opened. When the GPS-5
is running, you will hear a small amount of air escaping from the tank
lid even when the lid is fastened and latched. This is due to agitation
and is normal.
Pressure release valve
Pressure release valve
Latched and pressurized Open (after being depressurized)
To open the tank:
1. Slowly open the Pressure release valve by turning it
counter-clockwise (left). This depressurizes the tank.
CAUTION:
TANK CONTENTS UNDER PRESSURE
Stand back when opening the
Pressure release valve.
Note: Do not operate
the sprayer when the
tank lid is not securely
closed. Chemicals may
splash out onto the
operator if the tank is
open during operation
2. Pull the tank lid’s latch up.
3. Holding on to the latch, rotate the tank lid 90° clockwise.
4. Pull out the tank lid. Notice the direction of the tank lid in
relationship to the tank opening.
To close the tank:
1. Slide the lid into the tank opening, using the same direction
as when it was removed.
2. Rotate the lid 90° counterclockwise.
3. While pulling the lid up to seal it against the tank opening,
push down on the lid latch until it is parallel with the
tank lid and seals tightly.
4. Close the Pressure release valve by turning it clockwise.
Note: Do not operate the sprayer when the tank lid is not securely
closed. Tank agitation is powerful and liquid may splash out if the lid is
not sealed.
The tank should be thoroughly cleaned immediately after each use
by triple-rinsing the tank; a commercially available tank cleaner like
Nutra-Sol may be used and is recommended when the GPS-5 is used
to spray wettable powders on a regular basis.
ESS recommends the use of
NUTRA-SOL cleaner which
can be purchased from ESS.
Order S/N#1566.
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Quick connects
There are four sets of quick connects (plug and socket) on the sprayer:
tank inlet
tank (liquid) outlet,
spray gun air inlet
spray gun liquid inlet
To disconnect the quick connects:
1. Slide the sleeve on the quick connect socket up.
2. While holding the sleeve up, pull the socket o the quick
connect plug.
To connect the quick connects:
1. Slide the sleeve of the quick connect socket up.
2. While holding the sleeve up, push the socket onto the quick
connect plug.
3. Release the sleeve.
4. Pull on the socket body to ensure that it is properly seated
and cannot be pulled o the plug when the sleeve is down.
The air connection
The quick connect for the air connection is on the top of the air hose
storage rack. The other end of the air line hose connects to the air leader of the spray gun. The air leader of the spray gun is below the liquid
leader and is easily recognizable because its connector is larger than
the liquid connector – it is not possible to connect the air hose to the
liquid leader. The air line hose is red.
The Tank’s inlet and outlet plugs are
clearly marked,.
The liquid connection
The quick connect for the liquid line is on the bottom of the backpack
tank and connects the liquid leader of the spray gun. The liquid line is
gray and only long enough to allow the user to move freely with the
spray gun.
Don’t worry about connecting the air
or liquid to the wrong hose – the liquid
plug/socket is smaller than the air plug/
socket. It’s not possible to cross-connect
them.
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How to store the hose quick-connects
when not in use
The quick-connect sockets and plugs used on your GPS-5 sprayer are
precision components and should be kept clean. When not attached to
the spray gun leaders, the socket ends of the twin-line hose should be
attached to the plugs provided on the GPS frame. This will ensure that
the quick-connect plugs are not damaged while the GPS-5 is being
moved.
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Spray gun
NOTE
The spray gun is held by the operator during spraying. Activation
of the trigger causes liquid to spray. The Spray gun has the following user-serviceable parts: the air lter, the liquid lter assembly, the
nozzle assembly, and the batteries. Except for the batteries, which are
accessed by removing the battery cover, nothing inside the Spray gun
shell is user-serviceable. Do not open the spray gun shell; doing so
will void the warranty on the spray gun.
Liquid Filter
Air Filter
Battery
Brass Bolt
Trigger
Lock
Charging Indicator
Trigger
Housing
Air filter
Note: GPS-5 units manufactured after March 2009 do not require
an air lter on the spray gun air leader.
For GPS-5 units manufactured before March 2009, there is an in-line air
lter located outside the base of the spray gun in the air hose. It lters
dirt out of the air lines. It’s easy to tell the Air Filter from the Liquid
Filter Assembly because the Air Filter is in a silver-colored casing.
Replacement parts for the air lter assembly are available as a kit.
The kit includes a lter, and large and small o-rings.
Order using ESS part number 231.
Nozzle
The Spray Gun
Casing
Spring
To clean the air lter:
1. Unthread the casing from the cap using a ¾” wrench on
both parts. Be careful not to lose the spring or the air lter
inside of the casing.
2. Check inside each part for debris. Clean any dirt out with
compressed air or warm, soapy water.
3. Reassemble the air lter, making sure to put it together as
shown above.
ESS GPS-5 OWNER’S MANUAL
Filter Element
Filter O-Ring
Cap O-Ring
The Air Filter Assembly
Cap
18
Page 25
Trigger
The trigger turns the spray on and o. It can be continuously held for
operation or it can be locked in place.
Brass Bolt
Pull Trigger Lock
forward to engage
Depress Trigger
to spray
To engage/disengage the trigger:
1. Depress the trigger up towards the body of the spray gun
to start spraying.
2. To keep spraying, either keep holding the trigger or lock it
in place by pulling up the lock and hooking the trigger.
3. To stop spraying when the trigger is not locked, let go of
the trigger.
To clean the trigger:
1. Unthread the brass bolt on the top of the spray gun with a
⁄” socket wrench. Be careful not to lose the spring, plunger,
copper washer, and small brass bushing inside the trigger.
Note how they t inside so they may be replaced properly.
2. Check inside the trigger for blockage. Clean out any debris
with compressed air or warm, soapy water.
3. Replace the spring and plunger; rethread the brass bolt into
the top of the spray gun until tight.
ESS GPS-5 OWNER’S MANUAL
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Liquid filter assembly
The liquid lter assembly is located outside the base of the spray gun.
It is composed of these parts: a ⁄” NPT body (Item 12), a strainer
(Item 11), a ow disk (Item 10), an adapter (Item 9) and a cap (Item 8).
The strainer is the active ltering element in the volume of liquid that
ows through the line. There is an extra ow disk and an extra strainer
in the GPS-5 Parts Kit in case the originals are lost or damaged.
⁄” NPT Body (Item 12)
Strainer (Item 11)
Flow Disk (Item 10)
Adapter (Item 9)
To disassemble, clean and reassemble the liquid
lter (see labeled drawing above):
1. Using a ⁄” wrench on the cap (Item 8) and an ⁄” wrench
on the ⁄” NPT body (Item 12), unthread them.
Note: When you disassemble the liquid lter assembly, notice
how the parts t together in order to reassemble them prop erly. Be careful not to lose any parts, particularly the ow disk
(Item 10) which is inside the cap. The sprayer will not function
correctly without the ow disk.
Cap (Item 8)
Liquid Filter Assembly
2. Remove the strainer (Item 11) from the ⁄” NPT body.
3. If the ⁄” NPT body contains residue, clean it with com pressed air or clean water.
4. Clean the strainer with compressed air or clean water. If
residue still remains in the 50 mesh screen, disassemble the
strainer. Unscrew the top brass part from the bottom brass
part. The 50 mesh screen slides o the brass body and can
be cleaned with compressed air or clean water. If residue
still remains, soak the 50 mesh screen and screw the top
brass part back on the lower brass part.
5. If the ow disk is still in the cap, remove it. Check the
aperture of the ow disk for blockage. If there is any, clean
it with compressed air or water. Replace the ow disk so
that the numbers on the disk face the strainer.
6. Replace the strainer in the ⁄” NPT body.
7. Rethread the ⁄” NPT body and the cap.
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Nozzle assembly
It is very important to follow all the maintenance
and cleaning procedures to ensure that the electrostatic sprayer will function properly. Although the
MaxCharge™ nozzle will outperform all electrostatic
spray technology on the market, regular cleaning
will ensure peak operating performance.
The nozzle assembly is located at the end of the
spray gun wand. It is composed of a nozzle body,
internal o-ring, Teon ring, cover, external o-ring,
and a hood (see labeled drawing at right). To access
the nozzle components, just unscrew the nozzle
cover by hand.
Cleaning the spray gun
Always rinse the spray gun out with clean soapy
water after every day’s spraying. That is the most
important thing you can do to ensure trouble free
operation of your GPS-5 sprayer. By cleaning after
each and every working day you will avoid the longterm chemical buildup that eventually causes clogs,
poor spray patterns and shortens nozzle life.
Establish maintenance intervals to disassemble and
clean the nozzle. Your nozzle maintenance schedule
will vary depending on the types of chemicals used
and adherence to pre- and post-spray checks. In
general it is sucient to thoroughly clean nozzles
every 50 hours. If heavy loads of wettable powers
are used, the cleaning schedule should be sooner.
To clean the nozzle assembly
1. Slide the hood over the nozzle cover.
2. Unscrew the cover from the nozzle base and remove the Teon ring. Clean any debris from
around the nozzle tip.
Note: There is a small o-ring in the nozzle around the base of the tip, take care that it doesn’t fall
o. If it does, clean it and press back into place. Also, take care not to damage the nozzle tip when
the cover is removed.
3. Soak the ring, cover, and hood in a mild detergent solution. Use a small brush (soft or mild
bristle) to clean the inside of the cover and the hole through it. Also, be sure to clean the hood.
It is important to clean inside the hood and the two cavities. Rinse thoroughly.
4. Scrub the nozzle base with the detergent solution using a soft bristle brush. Clean the ceramic
outlet. Be sure to thoroughly clean the base cavity and take care not to damage the nozzle tip.
Rinse and make sure the small o-ring is in place.
5. Reassemble nozzle by placing the Teon ring on the base and screwing the cover on hand
tight. Next, slide the hood over the nozzle and seat it securely against the external o-ring.
Wipe clean the exterior of all hoses and ttings connected to the nozzle.
The electrode cover should be hand tight. Never use pliers or other tools to tighten it. The insulating
ring should be loose.
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You may wish to purchase Nutra-Sol Tank Cleaner from ESS (S/N#
1566), which cuts hard water scale and chemical deposits from the
electrode and internal component of the spray gun. The regular use of
Nutra-Sol will keep your equipment operating at peak performance.
The recommended mixing ratio is 4 ounces in 12.5 gallons of water
(113 grams in 47 liters of water).
Pre-spray check
I. Inspect Nozzles
Check nozzle cover to make sure it is on hand tight (do not
over tighten or use a wrench). Make sure the hood is seated
rmly to the nozzle base and against the external o-ring.
II. Preparing the Tank Mix
If you will be spraying wettable powders it is a good idea to
use a compatibility agent with the water and tank mix.
Compatibility agents are chemicals mixed with the water
that make mixing easier and keep heavy concentrations
uniformly in suspension. Some brand name additives are
COMPLIMENT™, UNITE®, and BALANCE™. Check with your
local chemical supplier for others that are available.
Post-spray check
ESS recommends the use of
NUTRA-SOL cleaner which
can be purchased from ESS.
Order S/N#1566.
After each spray it is essential that hoses and spray gun be
ushed with clean soapy water. This will help prevent
chemical build-up that can clog lines and nozzles. Also, it is
recommended that the nozzle exterior (black portion of
nozzle) and nozzle hoods be cleaned with soapy water at this
time.
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Batteries
The nozzle charging operates on two 9-volt rechargeable batteries
which are located in the base of the spray gun. In average conditions,
the batteries will last 10 to15 hours of operation on a charge. They
should be recharged when the charging indicator on top of the spray
gun shell doesn’t glow when air is going through the spray gun.
After approximately 800 to 1000 hours of service the battery pack will
no longer be able to hold an adequate charge and will need to be replaced. Replace with nickel-hydride rechargeable batteries. Order the
GPS-5’s replacement battery pack from ESS.
9v
Remember to charge the
spray gun batteries after
every work session!
To change the batteries:
1. Unscrew the two 6-32 x ½” Phillips head machine screws
which hold the battery cover in place.
2. While holding the leads in one hand, gently disconnect the
batteries from the leads. Be careful not to tear the leads o
the wires or to tear the lead wires out of the power supply.
3. Connect the fresh battery pack to the leads.
4. Replace the battery cover. Screw the two 6-32 x ½” Phillips
head machine screws back in to secure the battery cover.
5. Charge the spray gun before attempting to use it.
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Yearly spray gun service
Electrostatic Spraying Systems, Inc. oers and recommends yearly
services on ESS spray guns. For a nominal fee plus the cost of replacement parts, ESS will thoroughly clean the spray gun, replace any worn
parts and recalibrate the electronics and nozzle. The Yearly Service also
extends the spray gun warranty for another year. Consistent yearly
service by ESS will increase spraying performance and prolong the life
of the gun.
Contact ESS at (706) 769-0025 to schedule spray gun services. Then
package the spray gun securely since it can be damaged in shipment.
Ship the spray gun in its original packing material if possible. If the
original packing is not available, wrap the spray gun in bubble wrap,
place it in a strong cardboard box and surround the gun handle with
foam packing. Include a return shipping address and a telephone
number.
A form is provided for you at the back of this manual
Ship the spray gun via UPS or Parcel Post to:
Electrostatic Spraying Systems, Inc.
62 Morrison Street
Watkinsville, GA 30677
Yearly service will be conducted within one day of receipt by ESS.
If any parts need to be replaced, the owner will be contacted for
authorization before replacement. The spray gun will be returned via
UPS, COD, or return shipping costs may be invoiced, contingent upon
credit approval. ESS also accepts Visa, and MasterCard.
As an additional
benet,
Yearly Spray Gun
Service "turns back
the clock" – the
original 1-Year
Warranty on the
spray gun is
renewed for
another year!
Yet another good
reason to send
your spray gun in
to ESS for
factory-authorized
service!
ESS GPS-5 OWNER’S MANUAL
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Spraying with your ESS sprayer
Note: When using unfamiliar equipment or chemicals, always test on a
small area before treating the entire crop or surface. Do not use a chemical
with the ESS sprayer if the label prohibits use in low-volume sprayers.
Spray Technique
As in spray painting, the goal is to achieve even coverage over the
surface. The ESS MaxCharge spray gun is designed to help you do just
that by propelling the chemical spray with a gentle air ow, you can
stay well away from the target surface and let the electrostatic attraction do the rest of the work.
Please note: the spray droplets are very, very ne --- about 40 microns
each. If you are used to working with a conventional sprayer, you may
make the mistake of thinking the target is not wet enough because
you do not see large beads of liquid. In fact, after a pass with the
GPS-5’s MaxCharge spray gun, the surface of the target should just
barely glisten with moisture. The ne droplets will evaporate quickly.
Here are some tips to achieve the best possible coverage with the ESS
GPS-5 sprayer.
1. Before each job, ensure that your sprayer is in good
working order (see the pre-spray checklist on page 8 of
this manual).
Let the MaxCharge™ Spray
gun do the work!
There’s no need to stick the tip
of the spray gun into the plant
canopy. The electrostatically
charged spray will blow into
the plant canopy and the droplets will even change direction
to nd a dry surface to cling to.
2. The optimal spraying distance is at least 18 inches away
from the target surface, however 36 to 48 inches may
provide a more even coating. This gives the ne mist
produced by the MaxCharge nozzle room to develop into a
chaotic cloud that will be attracted to the target surface.
3. Hold the spray gun at right angles to the target surface.
Starting at the highest point and using zig-zag horizontal
strokes about 1 meter (3 ft.) wide, spray down to the
lowest point. Try to have each stroke overlap the previous
stroke by about 50%.
4. You can use vertical strokes if it suits the area better. Just
make sure to work in a methodical pattern and let your
strokes overlap.
5. When moving to the next section, allow it to overlap the
previous section by a few inches. Do not leave a gap.
6. The target surface should just barely glisten with the spray.
Do not over-saturate the surface; if you see runs or puddles
it means you are wasting chemicals. Do check to make sure
the newly-sprayed surface is very slightly damp.
7. Be careful to keep the spray gun barrel as level as possible.
If you allow the nozzle to point down too much, it may drip
occasionally.
8. Unlike spray painting, you don’t have to stop the spray on
every return stroke. Just engage the trigger lock and
concentrate on the regular pattern of spraying.
9. Periodically check to make sure the red light is illuminated
on the spray gun.
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Preparing a tank mix
The tank mix depends on two factors: water requirement and dosage.
Water requirement is the amount of water needed to cover the given
treatment area. Dosage is the amount of chemical which should be
applied in a given treatment area.
First determine the water requirement for your sprayer over a known
area. An easy way to determine water requirement is to spray a trial
application with water. Put a gallon of clean water in the ESS SC-1 tank
and thoroughly spray a known area. After spraying the known area,
determine how much water was used from the amount left in the tank.
This is the water requirement for the given area. Next measure the
known area to determine how many square feet were sprayed. Write
down both values for future reference.
___________ (gallons) Water Requirement
for __________________ (size of known area in ft)
Next determine the dosage. This is the amount of chemical you wish to
dispense in a given area. Appropriate dosage depends upon chemical
label recommendations, disinfection or sanitization goals, level of pest
or disease infestation, past experience with particular chemicals, and
other variables.
Because electrostatic spraying is a much more eective spraying method, ESS recommends that you experiment to nd the optimum chemical concentration. Start spraying using the same chemical rate used in
the past with either hydraulic or air assisted sprayers. For example, if
in the past you have used 2 ounces of chemical in a hydraulic sprayer
to spray a known area; then mix 2 ounces of chemical to the water
required by the GPS-5 to spray the same known area. In other words,
the same amount of chemical is sprayed out in the area but with much
less water.
DO NOT
OVERFILL
THE TANK
ESS recommends that the tank not be
lled past the full level mark, since the
force of agitation may cause liquid to
escape through the air bleed hole in the
tank lid.
Example:
You have two greenhouses covering 10,000 square feet that are sprayed using a conventional hydraulic sprayer. In the past you mixed 6 ounces of chemical to 25-50 gallons of water in order to spray both
house at full rate.
10,000
square
feet
With your new ESS sprayer you need to nd out how much water is needed to spray the known area.
The amount of water required to spray both houses is the amount of water in which you mix the
6 ounces of chemical in. Depending on the crop sprayed, you will use approximately 1to 2 gallons of
water with the ESS sprayer to cover 10,000 square feet. This applies to all chemicals, even wettable
powders.
10,000
square
feet
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26
Page 33
After becoming familiar with the sprayer spraying at full rate, you can
start reducing the amount of chemical used for each spray. Keeping
the amount of water in the tank constant, cut the amount of chemical
mixed in by 15 to 25% for each spray until a desirable kill is no longer
achieved. If you are planning to cut rates then it is very important to
scout your crop to determine spray eciency.
Chemical compatibility
It’s sometimes desirable to spray a mixture of two dierent chemicals
at the same time. It is good practice to conduct a jar test to determine
if the chemicals to be mixed are compatible. If they are not, then investigate alternative chemicals or use a compatibility agent to maintain
the chemicals in suspension. It is also a good idea to treat the water
with a pH agent.
ESS does not recommend the use of wetting agents or
spreader-stickers.
How to conduct a jar test
Needed:
Solutions of chemicals in
approximate dilutions
Jar with lid
Gloves and Safety
Glasses
After mixing solutions of
the desired chemicals, place
them in a large jar, cap it securely, and shake vigorously.
Carefully observe the interaction between the chemical
compounds. If the water
becomes milky or cloudy, the
combined solution may plug
the nozzles. Let the jar sit for
one to two hours. If there is
precipitate on the bottom
of the jar, then seek another
combination of chemicals.
A note about operating temperatures
The MaxCharge nozzle should always be operated at temperatures
above 10° Celsius (50° Fahrenheit). When the ambient temperature is
colder than this, the evaporative cooling caused as the spray is atomized will freeze the nozzle opening.
Nozzle freeze-up can also occur when the liquid to be sprayed is colder
than 10° C (50° F).
IMPORTANT
Water temperature must be at least
10° C (50° F). When the liquid and air
meet in the nozzle, the temperature of
the liquid deceases. As a result, water at
temperatures below 10° C (50° F) may
freeze and clog the nozzle.
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NOTES
ESS GPS-5 OWNER’S MANUAL
28
Page 35
Troubleshooting guide
When you encounter the problems listed below, use the suggested trouble-shooting methods. If you cannot solve the problem or have a problem with the Spray Gun that is not addressed in this manual, contact
ESS at (706) 769-0025.
Symptom Possible Problem(s) Corrective Action
Air pressure of spray · Clogged Liquid Filter · Clean the Liquid Filter Assembly
appears low (See the Liquid Filter Assembly section of this manual)
· Liquid ttings are loose · Make sure the Liquid Filter Assembly is installed correctly.;
· Air ttings are loose · Make sure that the Air Filter is installed correctly.
or damaged Inspect for loose hoses or failed air lines –
Spray ttings with soapy water – tighten ones that bubble
replace if necessary
· Clogged Air Filter · Clean the Air Filter
(See The Air Filter Assembly section of this manual)
· Dirty Trigger · Clean the Trigger
(See the To Clean the Trigger section of this manual)
No spray from nozzle or · Debris in the nozzle · Clean nozzle according to instructions
the spray from nozzle is
erratic or spits · Spray is freezing due to ·Make sure that water temperature is at least 50° (10°C)
evaporative cooling
· Liquid lters are clogged · Clean the Liquid Filter Assembly
(See the Liquid Filter Assembly section of this manual)
· Low liquid level in the tank · Rell tank
· Loose liquid or air tting · Inspect hose quick connects at case and at spray gun
leader. Make sure that all liquid ttings and air ttings are
properly seated.
· Dirty Trigger · Clean the Trigger
(See the To Clean the Trigger section of this manual)
· Overtightened nozzle cover · Loosen cover. It should only be nger-tight
Charging indicator (LED) · Batteries are exhausted Recharge batteries
blinks or goes is out If problem persists, replace battery pack
during operation
· Dirty nozzle · Clean nozzle according to instructions
Gasoline engine will not Please see the Briggs & Stratton Owner’s Manual
start
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Page 36
6 5 4 3 2 1
Spray Gun Service Parts
22
15
7
13
8
9
10
16
17
23
11
12
ESS GPS-5 OWNER’S MANUAL
18
(See note next page)
14
20
30
Page 37
GPS-5 service parts
Spray gun
ITEM ESS QUANTITY
NUMBER PART NUMBER DESCRIPTION ORDERED
1 AP-5795 Hood 1
2 NC 5764 Nozzle Cover 1
3 5771 O-Ring, Internal 1
4 AP-5694 Teon Ring 1
5 NB-5983 Nozzle Body, Greenhouse 1
Note: Must Send Spray Gun In For Repair
6 5770 O-Ring, External 1
7 3731 Repair Kit, Trigger 1
8 767 Cap, Flow Regulator 1
9 768 Adapter, ⁄”-27 FPT 1
10 1755 Orice Disk (Flow Disk) 1
11 437 Strainer, #50 Mesh 1
12 770 Body, ⁄”-27 FPT, Greenhouse 1
13 227 Filter, Air, In-Line 1
14 231 Repair Kit, Air Filter
15 4512 Battery, Alkaline, 9 V 2
16 118 Battery Cover, Spray Gun Shell 1
17 316 Screw, #6-32 × ⁄” Long, Phillips, SS 2
18 239 QC Plug, ⁄”, ⁄” MPT, Brass (Spray Gun Liquid) 1
19 AS-1748 Spray Gun Leader Assembly, Liquid 1
20 240 QC Plug, ¼”, ¼” MPT, Brass (Spray Gun) 1
21 AS-1749 Spray Gun Leader Assembly, Air 1
22 6518 Trigger Pawl 1
23 4430 Battery Charger 1
(NOTE: for models manufactured pre March 2009) 1
Flow disk chart
TANK ORIFICE ESS PART
UNIT STYLE SIZE NUMBER PART NUMBER
XT 3 GALLON TANK #20 765
XT 1 QUART BOTTLE #40 766
GPS 4 GALLON TANK #30 1755
EPS 4 GALLON TANK #30 1755
TRG 4 GALLON TANK #30 1755
J SERIES 15 GALLON TANK #30 1755
BP-2.5 2.5 GALLON TANK #59 4350
BP-4 4 GALLON TANK #59 4350
ESS GPS-5 OWNER’S MANUAL
Note: Use of a ow disk is crucial to the operation of the spray
gun. If the wrong size ow disk, or no ow disk is used, then the
spray gun will not spray or charge eciently
31
Page 38
TANK INLET - AIR
90
TANK OUTLET -
LIQUID
76
75
AIR LEAD
888786
78
77
74
73
HOSE REEL
TO SPRAY GUN
LIQUID LEAD
HOSE REEL TO
SPRAY GUN
79
72
TANK PICK-UP
85
TUBE
70
83
64
71
62
80
84
58
82
59
60
61
94
10
11
81
92
12
14
93
LIQUID FILTER
ASSEMBLY
TANK TO HOSE REEL
68
69
43
44
45
57
91
65
48
56
67
55
54
66
39
53
40
AIR INLET HOSE
COMPRESSOR
TO TANK
LIQUID OUTLET HOSE
TANK TO HOSE REEL
41
5
3
1
3
2
GPS EXPLODED VIEW
ESS GPS-5 OWNER’S MANUAL
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16
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10
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AIR REGULATOR
23
ASSEMBLY
17
ASSEMBLY
25
24
COMPRESSOR
9
7
8
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Service parts
GPS-5
ITEM ESS PART QUANTITY
NUMBER NUMBER DESCRIPTION ORDERED
1 29 BELT GUARD 1
2 2683 SCREW, #12 x 7/8” LONG, SELF-DRILLING, TEK, SS 4
3 6217 ¼” F/W 4
5 1925 BRACKET, BELT GUARD 1
7 17202 V-BELT, A45, ZP 1
8 17203 SHEAVE, BK-28, ZP 1
9 35 KEY 1
10 75 HEX NUT, 5/16”-18, ZP 13
11 73 LOCKWASHER, 5/16”, ZP 13
12 74 FLATWASHER, 5/16”, ZP 17
13 27 ENGINE, 5 HP, BRIGGS & STRATTON 1
14 1907 HHCS, 5/16”-18 x 2” LONG, ALL-THREAD, ZP 5
15 244 GPS ENGINE BACK-UP PLATE 1
16 242 RADIATOR, 5/8” DIA TUBE X 6 PASS 1
17 1152 ADAPTER, 3/8” FPT X 1/2” SWEAT, COPPER 3
18 1904 COMPRESSOR 1
23 1809 ADAPTOR, COMPRESSION, 3/8” MPT × ½” TUBE 1
24 1905 COPPER COOLING COIL 1
25 72 HHCS, 5/16”-18 x 1 1/2” LONG, G5, ZP 4
26 AW1815 MAIN FRAME WELDMENT, EPS/GPS 1
27 1903 GROUND CHAIN 1
39 1914 HOSE ASSY, EPS/GPS, AIR, TEE TO REEL 1
40 748 TIRE 4
41 4 SHAFT COLLAR, 5/8” ID, 1/2” WIDE 8
43 247 HEX NUT, 1/4”-20, ZP 2
44 70 LOCKWASHER, 1/4”, ZP 2
45 51 TRIM RING 1
46 1234 TEE, 1/4” NPT, STREET, BRASS 1
48 67 ELL, 1/8” NPT, STREET, 90 DEG, BRASS 2
49 440 GAUGE, PRESSURE, 1/8” NPT, 0-30 PSI 1
50 62 POP-OFF VALVE, 1/4” MPT 1
51 1182 REGULATOR, AIR 1/4” NPT 1
53 PP1575 HOSE, 1/4” ID, FABRIC COV, 1/4” MPT x 1/4” MPT, 20” LONG 1
54 111 COUPLING, 1/4” NPT, HEX, BRASS 1
55 1149 CHECK VALVE, 1/4” NPT 1
56 1067 REDUCING NIPPLE 1/4” MPT x 1/8” MPT, BRASS 1
57 248 TANK INLET QUICK CONNECT SOCKET 1
58 833 HANDLE BALL, BLACK PLASTIC 1
59 1745 STUD, ALL THREAD, 3/8”-16 x 1 1/2” LONG, STEEL 1
60 1916 HANDLE, HOSE REEL 1
61 586 LOCK NUT, STOVER, TOP, 3/8”-16,ZP 1
62 73 LOCKWASHER,5/16, ZP 2
63 71 HHCS, 5/16”-18 x 1” LONG, ZP 1
64 1911 HOSE REEL 1
65 1738 CARRIAGE BOLT, 1/4” -20 x 1 1/2” LONG, ZP 2
66 1912 HOSE ASSY, EPS/GPS/J, LIQUID, TANK TO REEL 1
67 181 WIRE TIE, NYLON, 4” LONG 4
68 156 ELL, 1/4” NPT, STREET, 90 DEG, BRASS 1
69 450 TANK OUTLET QUICK CONNECT SOCKET 1
ESS GPS-5 OWNER’S MANUAL
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Service parts cont’
GPS-5
ITEM ESS PART QUANTITY
NUMBER NUMBER DESCRIPTION ORDERED
70 417 HOSE ASSY, AIR LEADER 1
71 419 HOSE ASSY, LIQUID LEADER 1
72 252 TWIN LINE HOSE 1
73 1924 HOSE ASSY, AIR REEL TO GUN 1
74 1922 HOSE ASSY, LIQUID REEL TO GUN 1
75 92 HANDGUN AIR QUICK CONNECT SOCKET 1
76 90 HANDGUN LIQUID QUICK CONNECT SOCKET 1
77 447 TANK OUTLET QUICK CONNECT SOCKET 1
78 1248 5/16” FJIC x 1/4” MPT ADAPTER 1
79 198 LONG PICK-UP TUBE 1
80 266 O-RING 4
81 395 TANK, 5 GAL, SS 1
82 1664 O-RING, TANK LID 1
83 398 TANK LID 1
84 449 TANK FILTER 1
85 1933 HOSE, 1/4” ID, POLYFIBER 1
86 1662 HOSE CLAMP, WORM, SIZE 4, SS 1
87 2392 PICK-UP TUBE, SHORT 1
88 1247 ROOK ADAPTER 1
89 1239 NIPPLE, 1/8” NPT, CLOSE, BRASS 1
90 234 QC PLUG, 1/8”, 1/8” FPT, BRASS, (TANK INLET) 1
91 245 HOLSTER 1
92 6579 O-RING, LIQUID FILTER 1
93 6097 FILTER SCREEN 1
94 5146 LIQUID INLET FILTER (INCLUDES SCREEN AND O-RING) 1
ESS GPS-5 OWNER’S MANUAL
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62 Morrison St. · Watkinsville, Georgia 30677-2749
706-769-0025 · 1-800-213-0518 · Fax: 706-760-8072
Email: support@maxcharge.com · www.maxcharge.com
ESS Warranty
Electrostatic Spraying Systems, Inc. warrants to the original purchaser of any
Electrostatic Spraying Systems equipment that the equipment shall be free from
defects in material and workmanship for a period of one year after date of delivery. The
electrostatic power supply warranty form must be returned for verication of date of
purchase.
Disclaimer of Implied Warranties and Consequential Damages
Electrostatic Spraying Systems’ obligation under this warranty, to the extent allowed
by law, is in lieu of all warranties, implied or expressed, including implied warranties
of merchantability and tness for a particular purpose and any liability for incidental
and consequential damages with respect to the sale or use of the items warranted.
Such incidental and consequential damages shall include, but not be limited to: transportation, charges other than normal freight charges, cost of installation other than
cost approved by Electrostatic Spraying Systems, Inc., duty, taxes, charges for normal
service or adjustments, loss of crops or any other loss of income, expenses due to loss,
damage, detention or delay in the delivery of equipment or parts resulting from acts
beyond the control of Electrostatic Spraying Systems, Inc.
THIS WARRANTY SHALL NOT APPLY:
To vendor items which carry their own warranties such as, but not limited to, en-
1.
gines, air compressors, and liquid pumps. Electrostatic Spraying Systems, Inc. shall
supply replacement parts at list price pending the warranty investigation of the
vendor item. Vendor item parts such as air compressors, liquid pumps, solenoids,
and other such items must be returned before warranty credit.
2.
If the unit has been subject to misapplication, abuse, misuse, negligence, re or
other accident.
If parts not made or supplied by Electrostatic Spraying Systems, Inc. have been
3.
used in connection of the unit, if, in the sole judgment of Electrostatic Spraying
Systems, Inc. such parts aect its performance, stability or reliability.
4.
If the unit has been altered or repaired in a manner which, in the sole judgment
of Electrostatic Spraying Systems, Inc. such alteration or repair aects its performance, stability or reliability. This shall include but not be limited to opening of
the spray gun shell by anyone not authorized by Electrostatic Spraying Systems,
Inc. to do so.
To normal maintenance, service and replacement items such as, but not lim-
5.
ited to, engine lubricant, lters, or to normal deterioration of such things as,
but not limited to, belts and exterior nish, due to use and exposure.
NO EMPLOYEE OR REPRESENTATIVE OF
ELECTROSTATIC SPRAYING SYSTEMS, INC.
IS AUTHORIZED TO CHANGE THIS WARRANTY IN ANY WAY
OR GRANT ANY OTHER WARRANTY
UNLESS SUCH CHANGE IS MADE IN WRITING
AND IS SIGNED BY A CORPORATE OFFICER OF
ELECTROSTATIC SPRAYING SYSTEMS, INC.
ESS GPS-5 OWNER’S MANUAL
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NOTES
ESS GPS-5 OWNER’S MANUAL
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Spray gun repair/Yearly service
return form
When returning a spray gun for warranty or repair services to ESS, please
pack it securely and include the following form with your spray gun.
Spray Gun Serial Number: ____________________________________
Returned from:
Company: ______________________________________
Contact person: ______________________________________
Phone number: ______________________________________
Shipping address: ______________________________________
______________________________________
______________________________________
Mailing address: ______________________________________
(if dierent) ______________________________________
______________________________________
Date last serviced: ______________________________________
Problems with the Spray gun (if any):
__________________________________________________________
__________________________________________________________
__________________________________________________________
__________________________________________________________
__________________________________________________________
Send to:
Electrostatic Spraying
Systems, Inc.
62 Morrison St.
Watkinsville, GA 30677-2749
ESS recommends sending
your spray gun via a carrier
with tracking.
__________________________________________________________
Method of Payment:
Account (must be an approved account)
COD
Credit Card:
VISA MASTERCARD
Card Number: ________________________________
Expiration Date: ________________________________
Card Holder’s Name: ________________________________
________________________________
ESS GPS-5 OWNER’S MANUAL
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