Graco 334644A User Manual
Instructions-Parts
Xtreme® XL Air Motor
For use with high output reciprocating Graco pumps. For professional use only.
Important Safety Instructions:
Read all warnings and instructions in this manual and in related
manuals. Save these instructions.
Model No. 24X856
100 psi (0.7 MPa, 7 bar) Maximum
Working Pressure
334644A
EN
PROVEN QUALITY. LEADING TECHNOLOGY.
Contents
Related Manuals ................................................ 2
Warnings ........................................................... 3
Component Identification..................................... 6
General Information............................................ 7
Application................................................... 7
Reciprocating Signal Poppets....................... 7
External Pilot Lines...................................... 7
Manual Override Buttons.............................. 7
Low Pressure Operation............................... 7
Performance................................................ 7
Minimum Icing ............................................. 7
Bleed Air ..................................................... 7
Extended Capabilities................................... 7
Grounding.......................................................... 8
Accessories........................................................ 8
Bleed-type master air valve .......................... 8
Air Regulator ............................................... 8
Air Filter ...................................................... 8
Related Manuals
Run Motor Manually............................................ 8
Troubleshooting.................................................. 9
Ice In Air Motor............................................ 10
Repair................................................................ 11
Preventive Maintenance Schedule................ 11
Pressure Relief Procedure............................ 11
Repair Air Valve........................................... 12
Replace Pilot Valves.................................... 15
Repair Air Motor........................................... 15
Parts.................................................................. 18
Air Valve Parts............................................. 20
Kits and Accessories.................................... 21
Dimensions........................................................ 23
Mounting Hole Diagram................................ 23
Technical Specifications...................................... 24
Notes ............................................................... 25
Graco Standard Warranty.................................... 26
Manual Description
311762 Xtreme Lowers, Instructions-Parts
311825 Dura-Flo™ Lowers, Instructions-parts
334645 Xtreme XL Packages, Instructions-Parts
2
334644A
Warnings
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
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
• Use fluids and solvents that are compatible with equipment wetted parts. See Technical Data
in all equipment manuals. Read fluid and solvent manufacturer’s warnings. For complete
information about your material, request MSDS from distributor or retailer.
• Do not leave the work area while equipment is energized or under pressure.
• Turn off all equipment and follow the
• 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.
Technical Data
Pressure Relief Proced ure
in all equipment manuals.
when equipment is not in use.
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.
• Pressurized equipment can start without warning. Before checking, moving, or servicing
equipment, follow the
334644A 3
Pressure Relief Procedure
and disconnect all power sources.
Warnings
WARNING
FIRE AND EXPLOSION HAZARD
Flammable fumes, such as solvent and paint fumes, in
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, and
plastic drop cloths (potential static sparking).
• Ground all e quipment in the work area. See
• 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 gun firmly to side of grounded pail when triggering i nto pail. Do not use pail liners unless
they are anti-static or conductive.
•
Stop operation immediately
equipment until you identify and correct the problem.
• Keep a working fire extinguisher in the work area.
SKIN INJECTION HAZARD
High-pressure fluid from gun, 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 a mputation.
treatment.
if static sparking occurs or you feel a shock.Do not use
Grounding instructions
work area
canigniteorexplode.Paint
.
Get immediate surgical
• Do not spray without tip guard and trigger guard installed.
• Engage trigger lock when not spraying.
• Do not point gun 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
or servicing equipment.
• Tighten all fluid connections before operating the equipment.
• Check hoses and couplings daily. Replace worn or damaged parts immediately.
Pressure Relief Proced ure
when you stop spraying and before cleaning, checking,
4
334644A
Warnings
WARNING
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.
334644A 5
Component Identification
Component Identification
Figure 1
Key:
A Directional Air Valve
B
Air inlet, 1 in npt (f)
CMuffler
D Pilot valve
E
Manifold
F Manual shuttle override button
G Ground screw
H
Static ground cable
J
Plug for optional solenoid
K
Optional reed switch mount
L External pilot lines
MDe-ice bleed air valve
N
Lift ring (800 lb (363 kg) maximum
P Pump drive rod
6 334644A
General Information
General Information
TheXtremeXLairmotorisairpilotedwithtwopoppet
valves operating a cup and plate main air shuttle
valve. Air exhausts around the cylinder, through
sound absorption materials, and out the rear bottom
of the shroud.
Application
This motor has 7% l arge r e ffec ti ve area, and is
intended to directly replace, the Graco Premier®
motor. TheXLwillacceptthesameM16x2.0
threaded tie rods , the same connecting rods, and the
same 3/8-16 mounting studs used with the Premier.
The XL motor is physically smaller than the Premier,
so it will fit anywhere the Premier is used. The 1 in.
air inlet is at a low front position instead of up on the
top so a different air hose may be required. There
are also threaded cart/shelf type mounting holes in
the base which match the ones used on the NXT®
motors. The XL motor fits the standard heavy duty
Xtreme cart so the larger Premier cart is no longer
necessary.
• Movethevalveoffcenterduetoiceordebris.
• Flush a pump if a poppet is plugged, stuck in the
open position, or the signal is leaking
See Run Motor Manually, page 8 .
Low Pressure Operation
This motor will run at 4–5 psi (20.6–27.5 kPa,
0.21–0.27 bar)
Performance
The air valve (A), manifold (E), and exhaust are
larger than the Premier air handling parts in order
to exhaust the 630 in
cylinder after a full stroke. This allows the fluid
pressure to come back faster as the piston is driven
from the other side. The near square pressure trace
that this generates makes for a small change-over
pulse, and full pressure output for running multiple
guns.
3
of compressed air from the
Minimum Icing
Reciprocating Signal Poppets
The poppets are identical to the ones used in the
Graco Merkur® motors and many air-operated double
diaphragm motors. Poppets are fully accessible and
caneasilybereplaced.
External Pilot Lines
The pilot lines (L) that run from the shuttle end ports
to the exhaust poppets are run externally in hydraulic
hose. This allows for cold weather operation without
running the air through the aluminum manifold, which
can sometimes get cold enough for ai rline moisture
to freeze and block the signals.
Manual Override Buttons
There are m anual override buttons (F) on each end
of the air va lve that allows the internal main shuttle
valve to be physicall y moved from one position to the
other. Run the motor manually to:
The oversizing of all the air handling parts described
in the General Information section mean that normal
air motor ice buildup has less effect on the pump
output.
Bleed Air
Use the de-ice bleed air valve (M) to run warm air
through the valve and exhaust for de-icing. This
is mainly helpful during warm weather, very high
humidity applications, or low pressure high cycle rate
applications.
Extended Capabilities
The XL motor will accept DataTrak™ counting, a
runaway stop solenoid, and the top mount linear
position transducer used with NXT motors.
334644A
7
Grounding
Grounding
The equipmen
of static sp
to ignite or
wire for the
Verify that
tightened
clamp (U) o
earth grou
tmustbegroundedtoreducetherisk
arking. Static sparking can cause fume s
explode. Grounding provides an esc ape
electric current.
the ground screw (GS) is attached and
securely to the air motor. Connect the
f the static ground cable (H) to a true
nd.
Air Regulator
Required in your system to adjust the air pressure to
the motor and flui d outlet pressure of pump. Locate
itclosetothemotor. Installagaugetoreadair
pressure.
Air Filter
Required in your system to remove harmful dirt and
moisture from compressed air supply. The minimum
recommended air filtration is 40 micron.
Run Motor Manually
Use the manual override buttons (F) on each end
oftheairvalvetophysicallymovetheinternalmain
shuttle valve from one position to the other. Run the
motor manually to:
• Movethevalveoffcenterduetoiceordebris.
• Flush a pump if a poppet is plugged, stuck in the
open position, or the signal is leaking
Figure 2
Acces
Blee
Trapped air can cause the pump to cycle
unexpectedly, which could result in serious injury
from splashing or moving parts.
• Required in your system to rel ieve air trapped
between it and the air motor when the valve is
closed.
• Be sure the valve is easily accessible from the
pump and located downstream from the air
regulator.
sories
d-type master air valve
1. Lower the air pressure to approximately 30–40
psi (2.1 kPa, 210 bar – 280 kPa, 2.8 bar) to
manually operation the buttons.
2. If a poppet is plugged:
a. Press the bu tton on the end w here the motor
stopped. This will cause the motor to run
another cycle.
b. Press the button again to finish flushing.
3. If a poppet is stuck in the open position or the
signal is leaking:
a. Press the button on the opposite end from
where the motor stopped and hold it in. This
willcausethemotortostroketotheother
end.
b. Release the button to allow the motor to
stroke back.
Note
For poppet issues, the motor can also be
manually operated by dis connecting the pilot
hose and controlling the pilot signal exhaust
with your finger.
8 334644A
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