OPERATION –
UTILIZAÇÃO –
FONCTIONNEMENT –
FUNCIONAMIENTO
GMaxt Sprayers
309408
Rev. B
3300 psi (228 bar, 22.8 MPa) Maximum Working Pressure
Pressão máxima de trabalho de 3300 psi (228 bar, 22.8 MPa)
2
Paression maximale de service 3300 lb/po (228 bar, 22.8 MPa)
Presión máxima de operación 3300 psi (228 bar, 22.8 MPa)
GMax 3900
233700 – 233703
GMax 5900, GMax 5900HD
233705 – 233708, 233716, 233717
GMax 7900, GMax 7900 Roof Rig
233718 – 233721, 233740
All models not available in all countries.
Nem todos os modelos existem à disposição em todos os países.
Tous les modèles ne sont pas disponibles dans tous les pays.
Hay modelos que no se distribuyen en todos los países.
233705
S Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
S Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
S Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
S Digital Tracking Systemt (DTS) . . . . . . . . . . . . . . . . . . . . . . . 10
S Cleanup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
S Pressure Relief . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
S Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
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Graco Inc. is registered to I.S. EN ISO 9001
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CONTROLS / CONTROLES / COMMANDES / CONTROLES
On/Off Switch
Engine Controls
On/Off Switch Aan/Uit Schakelaar
Interrupteur Marche/Arrêt
Ein-Aus-Schalter
Interruptor de ligar e desligar
Interrupteur marche/arrêt
Interruptor de encendido/apagado
Controles do motor
Commandes de moteur
Controles del motor
Drain Valve
Pressure Control / Controle da pressão /
Système de contrôle de la pression /
Dispositivo de control de la presión
Válvula de drenagem
Vidange
Válvula de vaciado
8695A
Trigger Lock
Fecho do gatilho
Loquet de sécurité
Seguro del gatillo
Contractor
Contractor II
ti2871a
ti2870a
309408
3
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Setup
1. Connect appropriate Graco
high-pressure hose to sprayer.
Tighten securely.
Note: Remove second gun port cap
for multiple guns and repeat steps
1 – 4, 7, 8, 10
2. Connect other end of hose to gun.
3. Tighten securely.
4. Remove tip guard.
4
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Setup
5. Install clean inlet strainer.
6. Fill throat packing nut with TSL to prevent
premature packing wear.
Do this each time you spray and store.
Approximate
Fill Level
7. Check engine oil level. Add SAE 10W–30
(summer) or 5W–20 (winter), if necessary.
(cold)
8. Fill fuel tank.
9. Ground sprayer with grounding clamp.
309408
5
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Startup
1. Place suction tube and drain tube in
grounded metal pail partially filled with
flushing fluid. Attach ground wire to pail
and to true earth ground.
PAINT
FLUSH
2. Turn prime valve down.
Turn pressure control to lowest pressure.
3. Set pump switch OFF.
6
309408
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Startup
4. Start engine
a. Move fuel valve to open
a.
b. Move choke to closed
c. Set throttle to fast
b.
c.
d. Set engine switch ON
e. Pull starter cord
d.
e.
f. After engine starts, move choke to open
g. Set throttle to desired setting
f.
g.
– Digital display is functional after engine starts –
309408
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Startup
5. Set pump switch ON.
– Pump/clutch is now active –
6. Increase pressure enough to start pump
stroking and allow fluid to circulate for 15
seconds; turn pressure down, turn prime
valve horizontal.
15 SEC
7. Take spray gun trigger safety OFF.
ti2870a
safety OFF
8. Hold gun against grounded metal flushing pail.
Trigger gun and increase fluid pressure slowly
until pump runs smoothly.
FLUSH
Note: Inspect fittings for leaks.
Do not stop leaks with your hand or a rag! If
leaks occur, turn sprayer OFF immediately. Do Pressure Relief in Cleanup, 1. – 3.
on page 17. Tighten leaky fittings. Repeat Startup, 1. – 5. If no leaks, continue to
trigger gun until system is thoroughly flushed. Proceed to 6.
8
309408
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Startup
9. Place siphon tube in paint pail.
PAINT
10.Trigger gun again into flushing fluid pail until
paint appears. Assemble tip and guard, page 9.
FLUSH
SwitchTip and Guard Assembly
1. Engage trigger safety.
safety ON
ti2871a
2. Insert SwitchTipt .
seat
Insert seat and OneSealt .
SwitchTip
OneSeal
3. Screw assembly onto gun. Hand tighten.
309408
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Digital Tracking Systemt (DTS)
Operation
Close cover when spraying
to protect from overspray
Main Menu
1. Do Startup steps 1. – 3.
PAINT
FLUSH
2. Start engine, page 7.
Sprayer Model momentarily displays, e. g., G5900 = GMax
5900
Pressure display appears. Dashes appear when pressure is
less than 200 psi (14 bar, 1.4 MPa).
Note: Information other than pressure can not be accessed
if system pressure is greater than 200 psi (14 bar, 1.4 MPa).
or if the pump switch is ON.
10
309408
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Digital Tracking System (DTS)
3. Short press DTS button to move to Job
Gallons (or Liters x 10).
Note: JOB displays briefly, then the
number of gallons sprayed above
1000 psi (70 bar, 7 MPa).
4. Press and hold to reset to zero, or
short press DTS button to move to
Lifetime Gallons (or Liters x 10).
Note: LIFE displays briefly, then the
number of gallons sprayed above
1000 psi (70 bar, 7 MPa).
5. Short press DTS button to move to Auto-
Clean Timer operation (Manual 309278).
Note: If the pump is started in the
timer mode, the timer counts down to
zero and shuts the pump OFF. Use
for flushing only.
6. Short press DTS button to return to Pressure.
309408
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WatchDogt Pump Protection System
Pump stops automatically when material pail is empty.
To Activate:
1. Do Startup.
Increase pressure to more than
2000 psi (140 bar, 14 MPa).
Note: Instructions to automatically activate the
WatchDog pump protection system every time
you spray are on page 14.
2. Press and hold DTS button, release
when ON is displayed.
Note: GAL (or LITER) flashes while pump
protection system is active.
EMPTY displays and the pump stops when pump
protection system detects an empty material pail.
3. Turn pump switch OFF to resume normal operation.
Change Display Units:
Pressure:
Press and hold (5 seconds) DTS button to change
pressure units (psi, bar, MPa), to desired units.
Volume:
Press and hold (5 seconds) DTS button to
change volume units (GAL, LITERX10).
12
309408
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Secondary Menu – Stored Data and WatchDog Pump Protection Modes
1. Do Startup steps 1. – 3.
Pressure must be at zero.
PAINT
FLUSH
2. Start engine, page 7.
Pressure display appears.
3. Simultaneously press DTS button and set
pump on/off switch on.
Sprayer model momentarily displays,
e.g., G5900 = GMAX 5900.
Resettable Hour Meter appears.
309408
13
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Secondary Menu – Stored Data and WatchDog Pump Protection Modes
4. Press and hold to reset to zero, or
5. Short press DTS button to move to Lifetime
Hour Meter.
6. Short press DTS button to move to
TOTAL Gallons (all pressures).
7. Press DTS button to move to stored error
code. Press and hold DTS button to clear
error code to E=00. See Manual 309409.
8. Short press DTS button to move
to WatchDog pump protection
options menu.
14
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Secondary Menu – Stored Data and WatchDog Pump Protection Modes
9. Short press DTS button again to move to
WatchDog MAN (manual) mode.
10.Press and hold to switch between MAN (stan-
dard) and AUTO mode. In AUTO mode,
WatchDog pump protection is active once
pressure is over 1500 psi (103 Bar, 10.3 MPa)
11. Short press to return to step 3.
12.Turn pump switch OFF at any time
to exit stored data mode.
309408
15
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Spray Test Pattern
1. Trigger gun and spray test pattern.
Slowly adjust pressure to eliminate
heavy edges. Use smaller tip size if
pressure adjustment can not eliminate
heavy edges.
heavy
edges
2. Hold gun perpendicular, 10–12 in.
(25–30 cm) from surface. Spray back
and forth. Use strokes overlapped by
50%. Start gun movement before trig-
gering gun and release trigger before
stopping gun movement.
Clearing Tip Clogs
1. Release trigger, put trigger safety ON.
Rotate SwitchTip. Take trigger safety
OFF and trigger gun to clear the clog.
Never point gun towards your hand
or into a rag!
2. Put trigger safety ON, return SwitchTip
to original position, take trigger safety
OFF and continue spraying.
16
309408
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Cleanup
Perform AutoClean procedure (Manual 309278) or follow conventional
flushing procedure that follows:
Pressure Relief
1. Set pump switch OFF.
Turn engine OFF.
Pressure Relief
2. Turn pressure to lowest setting.
Trigger gun to relieve pressure.
PAINT
Pressure Relief
3. Turn prime valve down.
4. Remove guard and SwitchTip.
309408
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5. Unscrew bowl, remove filter. As-
semble without filter. Clean filter.
6. Clean filter, guard and SwitchTip in flushing
fluid.
FLUSH
7. Remove siphon tube set from paint and
place in flushing fluid. Use water for water
base paint and mineral spirits for oil base
paint.
PAINT
FLUSH
18
309408
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8. Turn engine ON and start engine.
Set pump switch ON.
9. Turn prime valve horizontal.
10.Hold gun against paint pail. Take trigger
safety OFF. Trigger gun until flushing fluid
appears.
Turn pressure control up until motor begins
to drive pump.
PAINT
11. Move gun to flushing pail, hold gun against
pail, trigger gun to thoroughly flush system.
Release trigger and put trigger safety ON.
FLUSH
12.Turn prime valve down and allow
flushing fluid to circulate for approxi-
mately 20 seconds to clean drain tube.
20 SEC
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13.Raise siphon tube above flushing fluid
and run sprayer for 15 to 30 seconds to
drain fluid. Turn pump switch OFF. Turn
engine OFF.
PAINT
FLUSH
Caution: If flushing with water, do not leave water in sprayer. Flush again with mineral
spirits, oil or Pump Armor and leave this protective coating in the sprayer to help
prevent freezing or corrosion and increase sprayer life.
14.Make sure plastic center tube is tightened
securely. Install filter bowl and filter. Hand
tighten filter bowl. Hand tighten gun han-
dle.
15.Wipe sprayer, hose and gun with a rag
soaked in water or mineral spirits.
16.Clean tip, guard and gasket with a soft
bristle brush to prevent part failure due
to dried materials. Assemble parts and
attach loosely onto gun.
FLUSH
20
309408
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DTS Error Codes
309409
Reference Repair Manual 309409 or 309411 or call your distributor for service
Service
309408
21
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Graco Warranty
Graco warrants all equipment listed in this manual which is manufactured by Graco and bearing its name to be free from defects in
material and workmanship on the date of sale by an authorized Graco distributor to the original purchaser for use. With the exception of
any special extended or limited warranty published by Graco, Graco will, for a period of twelve months from the date of sale, repair or
replace any part of the equipment determined by Graco to be defective. This warranty applies only when the equipment is installed,
operated and maintained in accordance with Graco’s written recommendations.
This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage or wear caused by
faulty installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or
substitution of non-Graco component parts. Nor shall Graco be liable for malfunction, damage or wear caused by the incompatibility of
Graco equipment with structures, accessories, equipment or materials not supplied by Graco, or the improper design, manufacture,
installation, operation or maintenance or structures, accessories, equipment or materials not supplied by Graco.
This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco distributor for
verification of the claimed defect. If the claimed defect is verified, Graco will repair or replace free of charge any defective parts. The
equipment will be returned to the original purchaser transportation prepaid. If inspection of the equipment does not disclose any defect
in material or workmanship, repairs will be made at a reasonable charge, which charges may include the costs of parts, labor, and
transportation.
Graco’s sole obligation and buyer’s sole remedy for any breach of warranty shall be as set forth above. The buyer agrees that no other
remedy (including, but not limited to, incidental or consequential damages for lost profits, lost sales, injury to person or property, or any
other incidental or consequential loss) shall be available. Any action for breach of warranty must be brought within two (2) years of the
date of sale.
GRACO MAKES NO WARRANTY, AND DISCLAIMS ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE IN CONNECTION WITH ACCESSORIES, EQUIPMENT, MATERIALS OR COMPONENTS SOLD BUT
NOT MANUFACTURED BY GRACO. These items sold, but not manufactured by Graco (such as electric motors, gas engines,
switches, hose, etc.), are subject to the warranty, if any, of their manufacturer. Graco will provide purchaser with reasonable assistance
in making any claim for breach of these warranties.
In no event will Graco be liable for indirect, incidental, special or consequential damages resulting from Graco supplying equipment
hereunder, or the furnishing, performance, or use of any products or other goods sold hereto, whether due to a breach of contract,
breach of warranty, the negligence of Graco, or otherwise.
FOR GRACO CANADA CUSTOMERS
The parties acknowledge that they have required that the present document, as well as all documents, notices and legal proceedings
entered into, given or instituted pursuant hereto or relating directly or indirectly hereto, be drawn up in English. Les parties
reconnaissent avoir convenu que la rédaction du présente document sera en Anglais, ainsi que tous documents, avis et procédures
judiciaires exécutés, donnés ou intentés à la suite de ou en rapport, directement ou indirectement, avec les procédures concernées.
ADDITIONAL WARRANTY COVERAGE
Graco does provide extended warranty and wear warranty for products described in the “Graco Contractor Equipment Warranty
Program”.
Graco Phone Number
TO PLACE AN ORDER, contact your Graco distributor, or call this number to identify the distributor closest to you:
1–800–690–2894 Toll Free.
All written and visual data contained in this document reflects the latest product information available at the time of publication.
Graco reserves the right to make changes at any time without notice.
Sales Offices: Minneapolis, Detroit
International Offices: Belgium, Korea, Hong Kong, Japan
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
PRINTED IN U.S.A. 309408 3/2003
22
309408
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