Graco XHF A Series User manual

3A2799D
EN
Instructions
XHF™Spray Gun
For spraying viscous materials at high flow rates. For professional use only.
262854, Series A
Includes an XHD™RAC®Guard and XHD429 SwitchTip™
7250 psi (50 MPa, 500 bar) Maximum Working Pressure
26C793, Series A
Includes an XHD™RAC®Guard and XHD429 SwitchTip™
7250 psi (50 MPa, 500 bar) Maximum Working Pressure
Important Safety Instructions
Read all warnings and instructions in this
manual before using the equipment. Save
these instructions.
Important Medical Information
Read the medical alert card provided with
the gun. It contains injection injury
treatment information for a doctor. Keep it
with you when operating the equipment.
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26C793
262854
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2 3A2799D
Contents
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Component Identification . . . . . . . . . . . . . . . . . . . . 5
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
System Requirements . . . . . . . . . . . . . . . . . . . . . 6
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Pressure Relief Procedure. . . . . . . . . . . . . . . . . . 7
Gun Trigger Lock . . . . . . . . . . . . . . . . . . . . . . . . . 7
Tip Guard Installation and Removal. . . . . . . . . . . 8
Spray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Adjust the Spray Pattern . . . . . . . . . . . . . . . . . . . 8
Gun Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Flushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Disassemble the Gun . . . . . . . . . . . . . . . . . . . . . 11
Reassemble the Gun . . . . . . . . . . . . . . . . . . . . . 12
Test the Gun After Service . . . . . . . . . . . . . . . . . 13
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
262854 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
26C793 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Technical Specifications . . . . . . . . . . . . . . . . . . . . 17
California Proposition 65 . . . . . . . . . . . . . . . . . . . . 17
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 18
Graco Information. . . . . . . . . . . . . . . . . . . . . . . . . . 18

Warnings
3A2799D 3
Warnings
The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The
exclamation point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks.
When these symbols appear in the body of this manual or on warning labels, refer back to these Warnings.
Product-specific hazard symbols and warnings not covered in this section may appear throughout the body of this
manual where applicable.
WARNING
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.
FIRE AND EXPLOSION HAZARD
Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. Paint or solvent
flowing through the equipment can cause static sparking. To help prevent fire and explosion:
• Use equipment only in well-ventilated area.
• Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and plastic drop
cloths (potential static sparking).
• Ground all equipment in the work area. See Grounding instructions.
• Never spray or flush solvent at high pressure.
• Keep work area free of debris, including solvent, rags and gasoline.
• Do not plug or unplug power cords, or turn power or light switches on or off when flammable fumes
are present.
• Use only grounded hoses.
• Hold gun firmly to side of grounded pail when triggering into pail. Do not use pail liners unless they
are anti-static or conductive.
•Stop operation immediately if static sparking occurs or you feel a shock.Do not use equipment until
you identify and correct the problem.
• Keep a working fire extinguisher in the work area.

Warnings
4 3A2799D
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
• Do not operate the unit when fatigued or under the influence of drugs or alcohol.
• Do not exceed the maximum working pressure or temperature rating of the lowest rated system
component. See Technical Specifications in all equipment manuals.
• Use fluids and solvents that are compatible with equipment wetted parts. See Technical
Specifications in all equipment manuals. Read fluid and solvent manufacturer’s warnings. For
complete information about your material, request Safety Data Sheets (SDSs) from distributor or
retailer.
• Do not leave the work area while equipment is energized or under pressure.
• Turn off all equipment and follow the Pressure Relief Procedure when equipment is not in use.
• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine
manufacturer’s replacement parts only.
• Do not alter or modify equipment. Alterations or modifications may void agency approvals and create
safety hazards.
• Make sure all equipment is rated and approved for the environment in which you are using it.
• Use equipment only for its intended purpose. Call your distributor for information.
• Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.
• Do not kink or over bend hoses or use hoses to pull equipment.
• Keep children and animals away from work area.
• Comply with all applicable safety regulations.
RECOIL HAZARD
Gun may recoil when triggered. If you are not standing securely, you could fall and be seriously injured.
TOXIC FLUID OR FUMES HAZARD
Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, or
swallowed.
• Read Safety Data Sheets (SDSs) to know the specific hazards of the fluids you are using.
• Store hazardous fluid in approved containers, and dispose of it according to applicable guidelines.
PERSONAL PROTECTIVE EQUIPMENT
Wear appropriate protective equipment when in the work area to help prevent serious injury, including
eye injury, hearing loss, inhalation of toxic fumes, and burns. Protective equipment includes but is not
limited to:
• Protective eyewear, and hearing protection.
• Respirators, protective clothing, and gloves as recommended by the fluid and solvent manufacturer.
WARNING

Component Identification
3A2799D 5
Component Identification
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Key
A Gun Body
B Valve Seat
C Gasket
D Needle
E Seal Retainer
F Seal
G SwitchTip
H Tip Guard
K Hex Screw
L Set screw
M Spring Guide
N Socket Head Set screw
P Spring
Q Adjusting Screw
R Fluid Housing
S Pivot Pin
T Gun Trigger
U E-Clip
V Swivel
W Trigger Pin
Z Fluid Hose
ZA Trigger Lock
Key

Setup
6 3A2799D
Setup
System Requirements
Pressure drain valves are recommended in the system.
Pressure drain valves assist in relieving fluid pressure in
the displacement pump, hose and gun in the event that
the gun is clogged and triggering the gun does not
relieve all pressure.
Grounding
Check your local electrical code and pump or sprayer
manual for detailed grounding instructions.
Spray gun: ground through connection to a properly
grounded fluid hose and pump.
Pump: follow manufacturer’s recommendations.
Fluid hose: use only electrically conductive hoses with
a maximum of 500 ft. (150 m) combined hose length to
ensure grounding continuity. Check electrical resistance
of hoses. If total resistance to ground exceeds 29
megohms, replace hose immediately.
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
surface, 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.
The equipment must be grounded to reduce the risk
of static sparking. Static sparking can cause fumes to
ignite or explode. Grounding provides an escape wire
for the electric current.

Operation
3A2799D 7
Operation
Pressure Relief Procedure
Follow the Pressure Relief Procedure whenever
you see this symbol.
1. Engage the gun trigger lock.
2. Shut off power to the pump.
3. Disengage the gun 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 gun trigger lock.
6. Open the system drain valve, having a container
ready to catch the drainage. Observe the pressure
gauge. The gauge reads 0 psi/bar when fully
drained. Close the system drain valve.
7. If you suspect that the spray tip or hose is
completely clogged or that pressure has not been
fully relieved after following the previous steps, very
slowly loosen the tip guard retaining nut or hose end
coupling to relieve pressure gradually. Clean the tip
or hose obstruction.
Gun Trigger Lock
To prevent injury when the gun is not in use, always
engage the gun’s trigger lock if unit is being shut down
or left unattended. A wallet-sized medical alert card
with important injection treatment information is
included with the gun. Additional cards are available at
no charge. Provide a card to all operators.
Trigger Locked Trigger unlocked
ti19265a
(no spray) (spray)
1. To engage the gun trigger lock, rotate the lock so it
is perpendicular to the gun body. See FIG. 1.
2. To disengage the gun trigger lock, push the lock out
and rotate it so it is parallel with the gun body. See
FIG. 1.
This equipment stays pressurized until pressure is
manually relieved. To help prevent serious injury from
pressurized fluid, such as skin injection, and
splashing fluid, follow the Pressure Relief Procedure
when you stop spraying and before cleaning,
checking, or servicing the equipment.
The trigger lock must move freely, and easily snap
into the locked position. If the trigger lock is damaged
or movement is restricted, replace with new trigger kit
immediately.
FIG. 1: Trigger Lock Positions

Operation
8 3A2799D
Tip Guard Installation and
Removal
Spray
Z
H
G
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V
• Do not pull hose with gun. Always pull hose with a
separate hand.
• Periodically verify that the set screw in the fluid
housing remains tight.
1. Connect a fluid hose (Z) to the gun inlet. Use swivel
17G980 or 17G981 if desired (order separately).
2. With SwitchTip (G) and tip guard (H) removed, start
the pump. Flush the pump according to the
instructions supplied with it. Use the lowest
pressure possible.
3. Prime the system with the material.
4. Follow the Pressure Relief Procedure, page 7.
5. Install the SwitchTip (G) and tip guard (H). See Tip
Guard Installation and Removal.
6. Start the pump. Trigger the gun onto test paper.
Adjust the fluid pressure until the spray is
completely atomized.
NOTE: Use the lowest pressure necessary to get the
desired results. Higher pressure may not improve the
spray pattern and will cause premature tip and pump
wear.
7. If adjusting the pressure does not give a good spray
pattern, relieve pressure and try another tip size.
8. When spraying, use a full-open, full-close trigger
action to get uniform coverage of applied media.
Hold the gun about 14 in. (350 mm) from and at
right angles to the work surface. Do not swing the
gun in an arc. Practice to find the best length and
speed of stroke.
Adjust the Spray Pattern
RN
ti19267a
Vertical Spray Pattern Horizontal Spray Pattern
H
H
1. Follow the Pressure Relief Procedure, page 7.
2. Loosen the tip guard retaining nut (RN).
3. Rotate the tip guard (H) as necessary to achieve a
vertical or horizontal spray pattern. Tighten the nut
(RN).
To avoid serious injury from skin injection, do not put
your hand in front of the spray tip when installing or
removing the spray tip and tip guard.
NO YES
NOTICE
Pulling hoses with the gun can cause the fluid housing
to loosen. This could result in the gun not shutting off
when the trigger is released.

Operation
3A2799D 9
4. The spray tip orifice and spray angle determines the
coverage and size of pattern. When more coverage
is needed, use a larger spray tip rather than
increasing fluid pressure.
Gun Care
• Do not try to “blow back” material; this is not an air
spray gun.
• Do not wipe fluid buildup off the gun or spray tip
until pressure is relieved.
Clean the Gun
1. Follow the Pressure Relief Procedure, page 7.
2. Use a solvent-soaked brush to clean the spray tip.
Clean the front of the tip frequently during the day to
help reduce buildup.
3. Clean the tip and tip guard at the end of each work
day.
Clean the Spray Tip / Clear Clogs
Spraying position shown. Rotate tip handle 180°
and trigger gun to clear clog.
ti19268a
NOTICE
1. Engage the gun trigger lock.
2. Rotate the RAC SwitchTip handle 180° (see FIG. 2).
3. Disengage the gun trigger lock.
4. Trigger the gun into a pail or onto the ground to
remove the clog.
5. Engage the gun trigger lock.
6. Rotate the tip handle back to the spraying position.
7. Disengage the gun trigger lock and continue
spraying.
8. If the tip is still clogged:
a. Engage the gun trigger lock.
b. Follow the Pressure Relief Procedure, page 7.
c. Remove the RAC SwitchTip and clean. See Tip
Guard Installation and Removal, page 8.
NOTICE
Openings in the tip guard reduce material buildup on
the guard while spraying. Damage to the sharp edges
of the openings causes material to collect in the
damaged area. To prevent this, never hang the gun
by the tip guard.
To reduce the risk of fluid injection or splashing in the
eyes or on the skin, do not point gun at anyone or at
any part of the body when cleaning or checking a
clogged tip. Point the gun toward the ground or into a
waste container when checking to see if the spray tip
is cleared.
FIG. 2: Rotate RAC tip handle for cleaning
Never soak the entire gun in solvent. Prolonged
exposure to solvent can damage the packings.

Operation
10 3A2799D
Flushing
• Be sure the entire system, including flushing pails,
is properly grounded.
• Remove the tip guard and SwitchTip.
• Maintain metal to metal contact between the gun
and the flushing pail.
• Use the lowest possible pressure.
ti19269a
NOTICE
NOTE: This procedure requires a grounded pail of
compatible flushing fluid.
1. Follow the Pressure Relief Procedure, page 7.
2. Remove the tip guard (H) and SwitchTip (G). Soak
and clean the parts.
3. Single component systems only: Remove the
pump intake from the original pail. Put the pump
intake in a grounded pail of compatible solvent.
4. Start the pump at its lowest pressure.
5. Single component systems only: Trigger the gun
into the original pail. When flushing fluid appears,
release the trigger.
Two-component systems only: Trigger the gun
into a waste container. When flushing fluid appears
release the trigger.
6. Trigger the gun into the flushing fluid supply pail.
Circulate the fluid until the system is thoroughly
flushed.
7. After gun is thoroughly flushed, follow the Pressure
Relief Procedure, page 7.
To reduce the risk of serious injury, including
splashing fluid in the eyes or on the skin, or static
electric discharge when flushing:
Always flush the pump and gun before the sprayed
fluid cures.