MODEL H8224
HVLP SPRAY GUN
INSTRUCTION MANUAL
COPYRIGHT © AUGUST, 2007 BY GRIZZLY INDUSTRIAL, INC.
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
#TR9837 PRINTED IN CHINA
13. UNTRAINED
&
UNSUPERVISED
6. USE CORRECT AIR PRESSURE.
Exceeding the maximum PSI rating
of this spray gun may cause unpre-
dictable operation or bursting.
7. DISCONNECT AIR PRESSURE
before servicing, changing accesso-
ries, or moving to another location.
Never leave this spray gun unat-
tended when connected to air.
8. AVOID IGNITION SOURCES.
Spraying around ignition sources
may cause fire or an explosion.
Do not spray around any ignition
sources or potential ignition sources.
Be aware of appliances that have
pilot lights or machinery that cre-
ates sparks during operation. Do not
smoke in the spraying area or when
spraying.
USE. Untrained operators may not be
aware of the safe use of this spray gun
and may injure themselves or cause
fire. All untrained operators must be
directly supervised at all times if using
this spray gun.
14. READ MATERIAL LABELS and
MATERIAL SAFETY DATA SHEETS
(MSDS). Read and know all the
instructions on the packaging label
and the MSDS before opening the
package. This information could save
your life.
15. PROTECTIVE CLOTHING. Protect
exposed skin from overspray by wear-
ing a protective suit or other approved
garment.
16. INAPPROPRIATE USE. DO NOT
point or shoot spray gun directly at
yourself or another person or animals.
Do not attempt to use the spray gun for
any other use than it was intended.
17. STORAGE. Thoroughly clean and dry
spray gun before storage. Store in an
approved cabinet.
18. BE AWARE OF HOSE LOCATION.
Hoses can easily become a tripping
hazard when laid across the floor in a
disorganized fashion.
9. FIRE EXTINGUISHERS. Always
have a fully charged multi-class
or class B fire extinguisher in the
immediate area.
10. AVOID
UNINTENTIONAL
OPERATION. Always disconnect air
when not in use, and do not carry
tool with hand on trigger.
11. KEEP CHILDREN AWAY. Avoid
injury to children by keeping them
away from this spray gun. Disconnect
and lock the spray gun away when
not in use.
12. AVOID USE WHEN TIRED OR ON
DRUGS OR ALCOHOL. Avoid using
this spray gun if you are overly tired
or intoxicated. Using this spray gun
during these times may increase the
risk of injury or fire.
19. SOLVENTS. Always store solvents
and shop towels soaked in solvent in
approved containers.
20. LOCAL LAWS. Consult local authori-
ties regarding exhaust and waste dis-
posal requirements.
-2-
Model H8224 HVLP Spray Gun
INTRODUCTION
Foreword
Specifications
The specifications, details, and photographs
in this manual represent the Model H8224
as supplied when the manual was prepared.
However, owing to Grizzly’s policy of
continuous improvement, changes may be
made at any time with no obligation on the
part of Grizzly.
Cup Size............................................120cc
Feed Type .......................................Gravity
Fluid Tip Size................................... 0.8mm
Air Consumption.................... 4.2–7.1 CFM
Operating Pressure Range........ 44–58 PSI
Max. Air Pressure.......................... 120 PSI
Cup Material.....................................Plastic
Pattern Width......... 71⁄8"-93⁄4" (180–250mm)
Body Material ............................. Aluminum
Air Inlet Size ...................................1⁄4" NPT
If you have any comments regarding this
manual, please write to us at the following
address:
Grizzly Industrial, Inc.
C/O Technical Documentation
P.O. Box 2069
Bellingham, WA 98227-2069
Email: [email protected]
Most importantly, we stand behind our
tools. If you have any service questions or
parts requests, please call or write us at
the location listed below.
Read the manual before operation.
Become familiar with this tool, its
safety instructions, and its operation
before beginning any work. Serious
personal injury may result if safety
or operational information is not
understood or followed.
Grizzly Industrial, Inc.
1203 Lycoming Mall Circle
Muncy, PA 17756
Phone: (570) 546-9663
Fax: (800) 438-5901
E-Mail: [email protected]
Model H8224 HVLP Spray Gun
-3-
SETUP
Assembly & Setup
Inventory
Beforeassemblingandusingthespraygun,
thoroughly clean and dry all parts. Please
refer to Cleaning in the MAINTENANCE
section on Page 10 for more detailed
instructions. Make sure all connections are
tight enough to prevent air leaks but not so
tight as to damage the tool.
Your spray gun left our warehouse in a
carefully packed box. If you discover the
spray gun is damaged after you have
signed for delivery, please immediately
call Customer Service at (570) 546-9663
for advice.
Save all packing materials for possible
inspection by the carrier or its agent.
Otherwise, filing a shipping claim can be
difficult.
To setup the spray gun:
1. Insert the filter into the gun body (see
Figure 2). Note: One of the plastic
filters may come pre-installed in the
spray gun; if so, skip this step.
After you have unpacked the box, you
should find the following items with
your spray gun:
Model H8224 Inventory (Figure 1) Qty
A. Cup 120cc.......................................... 1
B. Multi-Wrench...................................... 1
C. Cleaning Brush .................................. 1
D. Barbed Hose Fitting w/Nut................. 1
E. Plastic Filters...................................... 2
Note: One of the plastic filters may
come pre-installed in the spray gun.
Figure 2. Installing filter.
2. Attach the cup to the gun body as
shown in Figure 3.
B
A
Cup
Connection
Point
D
C
Gun Body
E
Figure 1. Inventory components shipped
Air Fitting
with Model H8224.
Figure 3. Cup installed.
-4-
Model H8224 HVLP Spray Gun
3. Install and tighten the barbed hose
Controls
fitting to the air inlet with the provided
1
nut; or attach a female ⁄4" NPT quick
connect fitting (not included) to the air
inlet for connection to an air coupler.
Atomizing Cap
Cup
1
Note: Using a ⁄4" NPT quick discon-
Fluid Control
nect set-up, will make operation and
maintenance tasks easier.
4. Attach the spray gun to an air hose
regulated between 44 and 58 PSI.
Pattern Control
Note: For the best results, use a hose
that will be dedicated for spray use
only. Do not use a hose that has been
used with an in-line oiler or other pos-
sible contaminant.
Trigger
Air Flow Control
Figure 4. Controls.
If you need additional help with this assem-
bly, call our Technical Support at: (570)
546-9663.
•
•
Fluid Control: Controls the volume of
material that travels through the fluid
tip.
Pattern Control: Adjusts the spray
pattern from a round pattern to a wide
fan.
•
•
Atomizing Cap: Controls the spray
pattern from vertical to horizontal.
Trigger: Squeeze the trigger half way
to blow air, or squeeze all the way to
spray.
•
•
Air Flow Control: Controls the fluid
pressure inside the spray gun.
Cup: Holds up to 120cc of material for
spraying.
Model H8224 HVLP Spray Gun
-5-
OPERATIONS
Spraying
The Model H8224 HVLP spray gun set
is designed to spray a wide variety of
materials such as lacquers, stains, prim-
ers, multi-component paints, clear coats,
acrylics, epoxies etc. It is ideal for auto
body and woodworking projects.
EXPLOSION HAZARD!
DO NOT smoke or allow any source
of flame or spark near spraying.
Vapors will explode if ignited.
To use your spray gun:
1. Read and follow the material manufac-
turer's instructions for spraying, mixing,
safety, disposal, and any other instruc-
tion on the label or Material Safety Data
Sheet (MSDS).
2. Ensure the cup is securely tightened
and all other fittings are secure to avoid
air leaks or material spills.
EYE AND RESPIRATORY HAZARD!
Always wear ANSI approved goggles
and a NIOSH approved respirator
when using spray equipment. Failure
to protect yourself can lead to severe
eye/lung injuries.
3. Set the inlet air pressure (the air com-
ing to the spray gun) to the lowest pres-
sure recommended in Specifications
on Page 3 or to the material manufac-
turer's recommendations.
4. Adjust the atomizing cap to vertical or
horizontal. See Atomizing Cap and
Fan Adjustments on Page 8 for fur-
ther explanation.
5. Fill the cup with material.
6. Trial-and-error are necessary to
achieve the results you want along with
a fair amount of practice. Test your
material flow and spray pattern on a
piece of cardboard or some scrap of
material similar to your project.
TOXIC FUMES!
Only spray in well ventilated areas
or an approved spray booth. NEVER
spray in a confined space where
toxic fumes and flammable vapors
can accumulate to deadly levels.
-6-
Model H8224 HVLP Spray Gun
7. Adjust the fluid control knob to start
with a low volume of material and keep
the atomization as low as possible.
You will need to use a combination of
fluid control, inlet air pressure, air flow
control and stroke speed to achieve the
results you want. Spray so the material
wets out nicely without running or sag-
ging.
10. Begin spraying 2-3 inches before the
work and continue to the end of the
work. Continue the motion for a few
inches past the work until you are
ready for the return stroke.
11. Maintain an even speed when spray-
ing.
12. Overlap each stroke by 50%. This will
ensure even coverage as shown in
Figure 6. Overlapping less than 50%,
as shown in the figure to the right,
may lead to missed spots or streaky
results.
8. Use the pattern control knob to adjust
the spray fan to your desired pattern.
9. Keep the gun tip perpendicular, parallel
and 6"-12" from the work at all times
when spraying, as shown in Figure
5. Do not allow your wrist to bend.
This will cause the gun to arc across
the surface and distribute the material
unevenly, possibly creating sags and
dry spots.
No
Yes
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Figure 6. Overlap technique.
13. The spray stroke should have even con-
sistency and parallel edges. If it doesn't,
please refer to Troubleshooting on
Page 12.
Figure 5. Spray technique.
NOTICE
Tipping the spray gun may cause
material to spill out of the cup. Always
hold the spray gun perpendicular to
the ground to avoid potential spills
and feed problems.
CONTAMINATION HAZARD!
Disposeofpaintwasteinaresponsible
manner! Follow manufacturer's
recommendations and local laws
regarding disposal.
Model H8224 HVLP Spray Gun
-7-
Atomizing Cap and
Fan Adjustments
Pattern
Stroke
The atomizing cap can be adjusted for
horizontal or vertical spraying patterns.
Spraying in the wrong direction may lead
to material build up on the atomizing cap
horn. Many performance problems are
caused by clogged atomizing holes on the
atomizing cap horns (see Cleaning on
Page 10).
Pattern
Control
Figure 8. Set up for horizontal spray stroke
with vertical fan pattern.
Rotating the pattern adjustment knob (see
Figure 4) changes the shape of the spray
pattern from a wide spray to a narrow
spray, as shown in Figure 9.
Stroke
Pattern
Pattern
Control
Figure 7. Set up for vertical stroke
direction with horizontal fan pattern.
Figure 9. Fan adjustment.
-8-
Model H8224 HVLP Spray Gun
ACCESSORIES
H7274—Campbell Hausfeld™ Pressure
G6261—Campbell Hausfeld™ Water
Regulator
Filter
Since PSI drops as it travels through air
hose, attaching a regulator directly to the
spray gun ensures accurate air regulation
for the best results possible. Provides
regulated output pressure of 0 to 125 PSI
for proper tool operation. Locking pressure
knob prevents accidental adjustments. 15
SCFM flow capacity @ 90 PSI. 1⁄4" NPT.
Filtering out water and oil before it reaches
the spray gun is critical for high quality
spraying results. This filter is rated at 150
1
PSI maximum air pressure, and has a ⁄4
NPT air inlet.
"
Figure 10. G6261 Campbell Hausfeld™
water filter.
G8114—3⁄8" x 25 Ft. Air Hose
G8115—3⁄8" x 50 Ft. Air Hose
G8116—3⁄8" x 100 Ft. Air Hose
Figure 12. H7274 Campbell Hausfeld™
pressure regulator.
H3275—1⁄4" NPT x 25' Recoil Hose
H3276—1⁄4" NPT x 50' Recoil Hose
These recoil hoses are great dedicated air
hoses because they are extremely light
weight and maneuverable, which makes
hours of spraying less tiring on wrists and
arms.
We recommend dedicating an air hose for
spraying use only, keeping it clean and
free of water and oil by using a filter on the
incoming end. Multi-purpose red rubber
air hose is flexible and abrasion resistant.
Features 200 PSI rating, 800 PSI bursting
strength, and 1⁄4" NPT ends.
Figure 11. Red rubber air hose.
Figure 13. H3275 Coil Hose.
Model H8224 HVLP Spray Gun
-9-
MAINTENANCE
5. Unscrew the atomizing cap and the
Cleaning
fluid tip. The fully disassembled gun
should look like Figure 14.
Proper cleaning is the best way to ensure
trouble free performance from your spray
gun. If your gun is not thoroughly cleaned,
damage and poor spraying will result.
Problems caused by improper cleaning will
not be covered by the warranty. Clean the
spray gun immediately after each use.
6. Rinse all parts thoroughly in solvent,
then dry with compressed air or let
air dry. Try not to expose O-rings to
solvent or they may get damaged.
Note: If the small holes in the atomiz-
ing cap become blocked, soak in clean
solvent. If the blockage still exists,
clear the blockage with a small needle,
taking great care to not enlarge or
damage the hole. Damage to the hole
will create a disrupted spray pattern.
To clean your spray gun:
1. Empty the cup and spray a small
amount of solvent through the gun.
Note: If you are spraying on a regular
basis, spraying solvents into the air
may be illegal. A cabinet style spray
gun cleaner may be required.
7. Use the cleaning brush with solvent to
clean the inner orifice and other hard
to reach areas on the outside of the
spray gun body.
2. DISCONNECT SPRAY GUN FROM
8. Wipe the gun body with a lint free
cloth and lubricate parts (see Page 11)
before re-assembly.
AIR!
3. Remove the cup and cup lid.
4. Disassemble the gun by unscrewing
the fluid control knob then remove the
spring and needle.
EXPLOSION HAZARD!
Chlorinated Solvents like 1,1,1-
Atomizing Cap
Cup
Tricloroethane
and
Methylene
Chloride (methyl chloride) can chem-
ically react with aluminum spray gun
parts and explode. Read solvent
label carefully to avoid using solvent
with these chemicals.
Spring
Fluid Tip
NOTICE
DO NOT soak the spray gun body in
solvent. Prolonged exposure to sol-
vent will rapidly deteriorate the spray
gun washers and seals. Ignoring this
notice will void your warranty.
Needle
Knob
Figure 14. Disassembly for cleaning.
-10-
Model H8224 HVLP Spray Gun
Lubrication
Lubricate the following areas with a non-
silicon spray-gun lubricant after cleaning.
A
B
D
A. Atomizing Cap Threads
B. Air Valve Packing
C. Trigger Pin
D. Pattern Control
E. Fluid Control Knob
F. Air Flow Control Knob
E
C
Allow the lubricant to coat threads, and run
into gun body to lubricate all moving parts
and seals.
F
Figure 15. General lubrication points.
Model H8224 HVLP Spray Gun
-11-
Troubleshooting
Symptom
Possible Cause
Solution
Fluttering or spitting 1. Dry or worn fluid tip seat per-
1. Tighten fluid tip or replace
seat with new one.
spray.
mits air to seep into fluid pas-
sage.
2. Material level too low.
3. Fluid tip or filter obstructed.
4. Dry needle packing.
2. Add material.
3. Clean.
4. Lubricate needle.
Uneven top or bot-
tom pattern.
1. Atomizing cap holes are
obstructed.
2. Build-up on top or bottom of
fluid tip.
1. Clear holes.
2. Clean.
3. Build-up on atomizing cap is
on needle seat.
3. Clean.
Right or left arc
pattern.
1. Left or right side horn holes
are plugged.
1. Clear holes.
2. Build-up on left or right side of 2. Clean.
fluid tip.
3. Build-up of material inside
atomizing cap.
3. Clean.
Heavy deposit of
material in center.
1. The material flow exceeds the 1. Lower fluid flow.
atomizing cap capacity.
2. Inlet air pressure is too low.
3. Material is too thick.
2. Increase inlet air pressure.
3. Thin material.
Narrow center pat-
tern.
1. Volume control turned in too
far.
1. Increase volume.
2. Inlet air pressure too high.
3. Fluid pressure is too low.
4. Material is too thin.
2. Reduce inlet air pressure.
3. Increase fluid pressure.
4. Adjust material.
No spray output.
1. No pressure at gun.
2. Fluid passages dirty.
1. Check air supply.
2. Clean gun, remove any
obstructions.
3. Fluid control closed.
4. Out of paint.
3. Open.
4. Refill.
5. Material too thick.
5. Thin to manufacturer's rec-
ommendations.
-12-
Model H8224 HVLP Spray Gun
Symptom
Possible Cause
Solution
Excessive over-
spray.
1. Fluid pressure too high.
2. Gun is too far from surface.
1. Reduce fluid pressure.
2. Keep gun at recommended
distance.
3. Spraying too fast.
3. Slow down and maintain
consistent, even parallel
stroke.
Unable to control
spray fan.
1. Pattern adjustment screw is
not seating properly.
1. Clean or replace.
2. Atomizing cap is loose.
2. Tighten atomizing cap.
1. Replace damaged seals.
Runs and sags.
1. Damaged seal.
Material leaks from 1. Cap not secure.
cup. 2. Cup not tight on gun body.
3. Leaking from cap vent hole.
1. Tighten.
2. Tighten.
3. Hold gun upright; do not tilt.
Material leaks from 1. Fluid tip loose.
1. Tighten.
gun.
2. Dry or damaged seals.
3. Excessive pressure.
2. Replace seals.
3. Reduce pressure.
Thick dimpled fin-
ish: orange peel
appearance.
1. Holding gun too close to sur-
face.
2. Inlet air pressure too low.
3. Material not properly mixed.
1. Spray at recommended dis-
tance.
2. Check inlet air pressure.
3. Follow manufacturer's
instructions.
4. Surface is dirty or oily.
4. More surface prep is
required.
Dry Spray.
1. Inlet air pressure too high.
2. Gun too far from surface.
1. Lower inlet air pressure.
2. Keep gun at recommended
distance.
3. Gun stroke too fast.
3. Slow down and maintain
consistent even parallel
stroke.
Gun leaks from
fluid tip.
1. Debris will not let the needle
seat with the fluid tip.
1. Clean or replace both.
Contaminated
paint: fish eye
appearance.
1. Water or oil in the air line.
1. Install an in-line air filter.
2. Replace air line.
Model H8224 HVLP Spray Gun
-13-
Parts Breakdown H8224
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REF PART #
DESCRIPTION
REF PART #
DESCRIPTION
1
PH8224001 AIR ADJUST SCREW
PH8224002 AIR ADJUST KNOB
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
PH8224026 TRIGGER PIN II
PH8224027 TRIGGER
2
3
PORS003
O-RING 2.5 X 1.5 S3
PEC01M
E-CLIP 3MM
4
PH8224004 DOMED SEAL WASHER
PH8224005 AIR INLET SPRING
PH8224006 AIR INLET VALVE
PH8224007 SWITCH SPRING
PH8224008 AIR VALVE ASSEMBLY
PH8224009 FOAM WASHER
PH8224029 CUP LID
5
PH8224030 CUP 120CC
PH8224031 PLASTIC FILTER
6
7
PH8224032 FLUID INLET JOINT
8
PH8224033 FLUID ADJUST NEEDLE
PH8224034 FLUID NEEDLE SPRING
PH8224035 FLUID ADJUST LOCK NUT
PH8224036 FLUID ADJUST KNOB
PH8224037 FLAT HD SCR M2.5-.45 X 8
PH8224038 PATTERN ADJUST KNOB
PH8224039 PATTERN ADJUST SCREW
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
PORS005
O-RING 4.5 X 1.5 S5
PH8224011 SWITCH KNOB
PH8224012 SWITCH WASHER
PH8224013 DIRECTION SCREW
PH8224014 ATOMIZATION CAP NUT
PH8224015 ATOMIZATION CAP WASHER
PH8224016 ATOMIZATION CAP
PH8224017 STEEL BALL
PORS003
PEC16M
O-RING 2.5 X 1.5 S3
E-CLIP 2.5MM
PH8224042 PATTERN ADJUST NUT
PH8224043 GUN BODY
PORS018
O-RING 17.5 X 1.5 S18
PH8224019 FLUID NOZZLE
PH8224044 AIR INLET JOINT
PH8224020 FLUID NOZZLE WASHER
PH8224021 DIRECTION SCREW
PH8224022 NEEDLE WASHER
PH8224023 FOAM WASHER
PH8224045 O-RING REPAIR KIT
PH8224046 BARBED HOSE FITTING
PH8224047 FLARE NUT 1/4" NPT
PH8224048 PIPE CLEANER BRUSH
PH8224049 M-WRENCH 7/8/10/12/13/16
PH8224024 COMPRESSION SPRING
PH8224025 TRIGGER PIN I
-14-
Model H8224 HVLP Spray Gun
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