Graco Xtreme 24N976 Parts list manual

3A2851A
EN
Instructions - Parts
Xtreme®Pumps
Carbon Steel Pumps with Hard Chrome Rod for Sealer Applications.
Part No. 24N976
See page 2 for model information, including maximum working pressure.
Important Safety Instructions
Read all warnings and instructions in this
manual. Save these instructions.

Related Manuals
23A2851A
Contents
Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Pump Packages . . . . . . . . . . . . . . . . . . . . . . . . . 2
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Important Isocyanate (ISO) Information . . . . . . . . 5
Isocyanate Conditions . . . . . . . . . . . . . . . . . . . . . 5
Material Self-ignition . . . . . . . . . . . . . . . . . . . . . . 5
Keep Components A and B Separate . . . . . . . . . 5
Moisture Sensitivity of Isocyanates . . . . . . . . . . . 5
Foam Resins with 245 fa Blowing Agents . . . . . . 5
Changing Materials . . . . . . . . . . . . . . . . . . . . . . . 6
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Flush Before Using Equipment . . . . . . . . . . . . . . 7
Mounting Accessories . . . . . . . . . . . . . . . . . . . . . 7
Hoses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Air Line Accessories . . . . . . . . . . . . . . . . . . . . . . 8
Fluid Line Accessories . . . . . . . . . . . . . . . . . . . . 8
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Pressure Relief Procedure . . . . . . . . . . . . . . . . 10
Trigger Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Preventive Maintenance Schedule . . . . . . . . . . 12
Wet-Cups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Flushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Corrosion Protection . . . . . . . . . . . . . . . . . . . . . 12
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Required Tools . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Replace the Lower . . . . . . . . . . . . . . . . . . . . . . . 14
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Xtreme Pumps with NXT Air Motors . . . . . . . . . 15
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Mounting Hole Layouts . . . . . . . . . . . . . . . . . . . . . 17
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 20
Graco Information . . . . . . . . . . . . . . . . . . . . . . . . . 20
Related Manuals
Manuals are available at www.graco.com.
Models
Pump Packages
Manual Description
311762 Xtreme Lower Instructions - Parts
311238 NXT®Air Motor Instructions - Parts
Pump Part
No. and
Series
Lower
Part No. Description
Air
Motor
Part No. Ratio
Maximum
Working Pressure
MPa, bar (psi)
Maximum Air
Input Pressure
Pa, bar (psi)
24N976, A 24N942 Xtreme 290 (290cc), Car-
bon Steel; 3 UHMW and 2
Carbon-filled PTFE Pack-
ings
N65RH0 45:1 31.0, 310 (4500) 0.7, 7.0 (100)

Warnings
3A2851A 3
Warnings
The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclama-
tion 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
FIRE AND EXPLOSION HAZARD
Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. 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 arc).
• 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.
• Ground all equipment in the work area. See Grounding instructions.
• Use only grounded hoses.
• Hold gun firmly to side of grounded pail when triggering into pail. Do not use pail liners unless they
are antistatic or conductive.
•Stop operation immediately if static sparking occurs or you feel a shock.Do not use equipment
until you identify and correct the problem.
• Keep a working fire extinguisher in the work area.
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 amputation. Get immediate surgical treatment.
• 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 Pressure Relief Procedure when you stop spraying and before cleaning, checking, or
servicing equipment.
• Tighten all fluid connections before operating the equipment.
• Check hoses and couplings daily. Replace worn or damaged parts immediately.

Warnings
43A2851A
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 com-
ponent. See Technical Data in all equipment manuals.
• 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 Pressure Relief Procedure when equipment is not in use.
• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine manu-
facturer’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.
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 Pressure Relief Procedure and disconnect all power sources.
TOXIC FLUID OR FUMES HAZARD
Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, or
swallowed.
• Read MSDSs to know the specific hazards of the fluids you are using.
• Store hazardous fluid in approved containers, and dispose of it according to applicable guidelines.
• Always wear chemically impermeable gloves when spraying, dispensing, or cleaning equipment.
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. This protective equipment includes but is
not limited to:
• Protective eyewear, and hearing protection.
• Respirators, protective clothing, and gloves as recommended by the fluid and solvent manufacturer
WARNING

Important Isocyanate (ISO) Information
3A2851A 5
Important Isocyanate (ISO) Information
Isocyanates (ISO) are catalysts used in two component materials.
Isocyanate Conditions
Material Self-ignition
Keep Components A and B
Separate
Moisture Sensitivity of
Isocyanates
Exposure to moisture (such as humidity) will cause ISO
to partially cure; forming small, hard, abrasive crystals,
which become suspended in the fluid. Eventually a film
will form on the surface and the ISO will begin to gel,
increasing in viscosity.
NOTE: The amount of film formation and rate of crystal-
lization varies depending on the blend of ISO, the
humidity, and the temperature.
Foam Resins with 245 fa
Blowing Agents
Some foam blowing agents will froth at temperatures
above 90°F (33°C) when not under pressure, especially
if agitated. To reduce frothing, minimize preheating in a
circulation system.
Spraying or dispensing materials containing
isocyanates creates potentially harmful mists,
vapors, and atomized particulates.
Read material manufacturer’s warnings and material
MSDS to know specific hazards and precautions
related to isocyanates.
Prevent inhalation of isocyanate mists, vapors, and
atomized particulates by providing sufficient
ventilation in the work area. If sufficient ventilation is
not available, a supplied-air respirator is required for
everyone in the work area.
To prevent contact with isocyanates, appropriate
personal protective equipment, including chemically
impermeable gloves, boots, aprons, and goggles, is
also required for everyone in the work area.
Some materials may become self-igniting if applied
too thick. Read material manufacturer’s warnings and
material MSDS.
Cross-contamination can result in cured material in
fluid lines which could cause serious injury or
damage equipment. To prevent cross-contamination:
•Never interchange component A and component B
wetted parts.
• Never use solvent on one side if it has been con-
taminated from the other side.
NOTICE
Partially cured ISO will reduce performance and the life
of all wetted parts.
• Always use a sealed container with a desiccant
dryer in the vent, or a nitrogen atmosphere. Never
store ISO in an open container.
• Keep the ISO pump wet cup or reservoir (if
installed) filled with appropriate lubricant. The lubri-
cant creates a barrier between the ISO and the
atmosphere.
• Use only moisture-proof hoses compatible with ISO.
• Never use reclaimed solvents, which may contain
moisture. Always keep solvent containers closed
when not in use.
• Always lubricate threaded parts with an appropriate
lubricant when reassembling.

Important Isocyanate (ISO) Information
63A2851A
Changing Materials
NOTICE
Changing the material types used in your equipment
requires special attention to avoid equipment damage
and downtime.
• When changing materials, flush the equipment mul-
tiple times to ensure it is thoroughly clean.
• Always clean the fluid inlet strainers after flushing.
• Check with your material manufacturer for chemical
compatibility.
• When changing between epoxies and urethanes or
polyureas, disassemble and clean all fluid compo-
nents and change hoses. Epoxies often have
amines on the B (hardener) side. Polyureas often
have amines on the B (resin) side

Installation
3A2851A 7
Installation
Grounding
The equipment must be grounded. Grounding reduces
the risk of static and electric shock by providing an
escape wire for the electrical current due to static build
up or in the event of a short circuit.
Pump: Use the ground screw (GS) and lockwasher on
the motor to attach a 244524 ground wire (Y). Tighten
the screw securely. Connect the other end of the ground
wire to a true earth ground.
Air and fluid hoses: use only electrically conductive
hoses.
Air compressor: follow manufacturer’s recommenda-
tions.
Spray gun: ground through connection to a properly
grounded fluid hose and pump.
Fluid supply container: follow local code.
Object being sprayed: follow local code.
Solvent pails used when flushing: follow local code.
Use only conductive metal pails, placed on a grounded
surface. Do not place the pail on a nonconductive sur-
face, such as paper or cardboard, which interrupts
grounding continuity.
To maintain grounding continuity when flushing or
relieving pressure: hold metal part of the spray gun
firmly to the side of a grounded metal pail, then trigger
the gun.
Flush Before Using Equipment
The equipment was tested with lightweight oil, which is
left in the fluid passages to protect parts. To avoid con-
taminating your fluid with oil, flush the equipment with a
compatible solvent before using the equipment. See
Flushing, page 12.
Mounting Accessories
See Dimensions, page 16 and Mounting Hole Lay-
outs, page 17.
Hoses
Be sure all hoses are properly sized and pressure-rated
for your system. Use only electrically conductive hoses.
Fluid hoses must have spring guards on both ends. Use
a whip hose (P) and a swivel (R) between the main fluid
hose (N) and the gun/valve (S) to allow freer gun/valve
movement.
GS
TI8250a
Y

Installation
83A2851A
Air Line Accessories
For air-powered pumps, install the following accessories
in the order shown in FIG. 1, using adapters as neces-
sary.
•Bleed-type master air valve (E): required in your
system to relieve 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 down-
stream from the air regulator.
•Pump air regulator (F): to control pump speed and
outlet pressure. Locate it close to the pump.
•Air line filter (J): removes harmful dirt and moisture
from compressed air supply.
•Second bleed-type air valve (K): isolates air line
accessories for servicing. Locate upstream from all
other air line accessories.
Fluid Line Accessories
Install the following accessories in the order shown in
FIG. 1, using adapters as necessary.
•Fluid drain valve (M): required in your system, to
relieve fluid pressure in the hose and gun.
•Fluid filter (L): with a 60 mesh (250 micron) stain-
less steel element to filter particles from the fluid as
it leaves the pump.
•Gun or valve (S): to dispense fluid.
•Fluid line swivel (R): for easier gun movement.
•Suction kit (T): enables the pump to draw fluid from
a container.
Accessory Air Control Kits are available for the NXT
Air Motor. The kits include a master air valve (E), air
regulator (F), and filter (J). Order the kit separately.
See manual 311239 for information.

Installation
3A2851A 9
Key:
APump
B Wall Bracket
D Air Line Lubricator
E Bleed-type Master Air Valve (required)
F Pump Air Regulator
H Electrically Conductive Air Supply Hose
J Air Line Filter
K Air Shutoff Valve
L Fluid Filter
M Fluid Drain Valve (required)
N Electrically Conductive Fluid Supply Hose
P Fluid Whip Hose
R Gun Swivel
S Airless Spray Gun
T Fluid Suction Kit
U Main Air Supply Line
V Air Line Drain Valve
Y Pump Ground Wire (required, see page 7 for installation
instructions)
FIG. 1: Typical Installation, Air-Powered Pumps
TI8433a
A
B
E
F
H
J
K
L
M
N
P
R
S
T
U
VY
D

Operation
10 3A2851A
Operation
Pressure Relief Procedure
1. Engage the trigger lock.
2. Close the bleed-type master air valve to shutoff the
pump.
3. Disengage the trigger lock.
4. Hold a metal part of the gun firmly to a grounded
metal pail. Trigger the gun to relieve pressure.
5. Engage the trigger lock.
6. Open all fluid drain valves in the system, having a
waste container ready to catch drainage. Leave
drain valve(s) open until you are ready to spray
again.
7. If you suspect the spray tip or hose is clogged or
that pressure has not been fully relieved after follow-
ing the steps above, VERY SLOWLY loosen tip
guard retaining nut or hose end coupling to relieve
pressure gradually, then loosen completely. Clear
hose or tip obstruction.
Trigger Lock
Always engage the trigger lock when you stop spraying
to prevent the gun from being triggered accidentally by
hand or if dropped or bumped.
Startup
1. Connect the suction kit (T) to the pump's fluid inlet,
and place the tube into the fluid supply.
2. Close the air regulator (F) then open the pump's
bleed-type master air valve (E) to prepare the
pump’s power source.
3. Hold a metal part of the gun (S) firmly to the side of
a grounded metal pail and hold the trigger open.
4. Slowly open the air regulator until the pump starts.
5. Cycle the pump slowly until all air is pushed out and
the pump and hoses are fully primed. Release the
gun trigger and lock the trigger safety latch. The
pump should stall against pressure when the trigger
is released.
6. With the pump and lines primed, and with adequate
air pressure and volume supplied, the pump will
start and stop as the gun is opened and closed. In a
circulating system, the pump will speed up or slow
down on demand, until the air supply is shut off.
7. Always use the lowest air pressure necessary to get
the desired results. Higher pressures cause prema-
ture tip/nozzle and pump wear. Use the air regulator
(F) to control the pump speed and fluid pressure.
8. Never allow the pump to run dry of the fluid being
pumped. A dry pump will quickly accelerate to a
high speed, possibly damaging itself.
Follow the Pressure Relief Procedure when-
ever you see this symbol.
This equipment stays pressurized until pressure is
manually relieved. To help prevent serious injury from
pressurized fluid, such as skin injection, splashing
fluid and moving parts, follow the Pressure Relief
Procedure when you stop spraying and before
cleaning, checking, or servicing the equipment.
If your pump accelerates quickly, or is running too
fast, stop it immediately and check the fluid supply.
If the supply container is empty and air has been
pumped into the lines, refill the container and prime
the pump and the lines with fluid, or flush and leave
it filled with a compatible solvent. Be sure to elimi-
nate all air from the fluid system.