Instructions/Parts
AIR DRIVEN
313643G
Expanding Blade Mixer
Expanding blade bung-mounted agitator for maintaining suspension and even mixing in
industrial paints and coatings. For professional use only.
Not approved for use in European explosive atmosphere locations.
Model 24C728, Series B
Low Viscosity, up to 1000 centipoise
Model 24C729, Series B
High Viscosity, up to 2000 centipoise
EN
100 psi (0.7 MPa, 7 bar) Maximum Working Pressure
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
Contents
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . .10
Graco Standard Warranty . . . . . . . . . . . . . . . . .12
Graco Information . . . . . . . . . . . . . . . . . . . . . . .12
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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 symbol refers to procedure-specific risk. When
these symbols appear in the body of this manual or on warning labels, refer back to these Warnings. Additional, product-specific warnings may be found 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.
• If there is static sparking or you feel a shock, stop operation immediately. Do not use equipment
until you identify and correct the problem.
• Keep a working fire extinguisher in the work area.
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 Data in all equipment manuals.
• Do not leave the work area while equipment is energized or under pressure. Turn off all equipment
and follow the Pressure Relief Procedure in this manual 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.
• 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 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 in this manual. Disconnect power or air supply.
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 MSDS’s 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.
2 313643G
Warnings
313643G 3
Installation
Installation
NOTE: Reference numbers and letters in parentheses in
the text refer to the callouts in the figures and in the
parts drawing.
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.
See F
IG. 1. Loosen the grounding screw (GS). Insert
one end of a 12 ga. minimum ground wire behind the
grounding screw and tighten the screw securely.
Connect ground clamp to a true earth ground. A ground
wire and clamp, Part 238909, is available from Graco.
Air Line Accessories
Install the following accessories in the order shown in
F
IG. 2, using adapters as necessary.
Bleed-type master air valve (A): to isolate the air line
components for servicing.
Air filter (B): removes harmful dirt and moisture from
the compressed air supply. Order part 106148 for
3/8 npt or 106149 for 1/2 npt.
Air regulator and gauge (C): to control air motor and
agitator speed.
Air line lubricator (D): Downstream from the filter,
install an air line lubricator for automatic air motor lubrication. Set the lubricator feed rate at 1 drop of oil per
minute for high speed or continuous duty usage. Do not
overfeed oil or exhaust air may become contaminated.
To manually lubricate the air motor, see Lubricate the
Air Motor, page 6. A 3/8 in. npt air line lubricator, Part
214847, is available from Graco.
GS
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FIG. 1. Ground Screw
Air Requirements
To help prevent component rupture, do not exceed
100 psi (0.7 MPa, 7 bar) maximum air working
pressure.
Typical air requirements for continuous use at 400 rpm
and 100 psi (0.7 MPa, 7 bar) inlet pressure:
• low viscosity air motor -- 12 scfm (0.34 m
• high viscosity air motor -- 22 scfm (0.62 m
3
/min)
3
/min)
NOTICE
Not lubricating the air motor will cause air motor failure.
E
AB
F
IG. 2. Typical Installation
Key:
A Bleed-type master air valve
B Air filter
C Air regulator and gauge
D Air line lubricator
E Agitator motor
F Mix tank (reference only)
C
D
F
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4 313643G
Installation
Install the Agitator
Always maintain a minimum of 1 in. (25.4 mm) clearance between rotating agitator parts and container to
prevent sparks from contact.
1. Due to variability in drum heights the lowest set of
blades may contact the bottom of the drum. If the
bung adapter will not fully seat, or if resistance is felt
when installing the agitator, move the blades up the
shaft. To move the blades, loosen the setscrew on
the hub and slide the assembly up or down to the
desired position. The setscrew must always remain
on the top, with the blades hanging down, so the
blades will pass into and out of the bung hole.
NOTICE
Keep the agitator tightly mounted to the drum bung
to prevent damage to the threads from vibration.
When using a modified drum, check that there is no
interference between the base of the drum and the
shaft of the agitator to prevent blade or shaft damage and to avoid sparks from contact (see Warning
under Install the Agitator).
3. Position the air motor so the air line can be attached
easily to the needle valve’s 1/8 npt inlet, without
obstructing any other system components.
4. Attach an air line quick disconnect valve or ball
valve for main air shutoff. Order Part 208536,
Coupler, and Part 169969, fitting.
5. Attach the air line between the needle valve’s
1/8 npt inlet and the 1/8 npt air supply manifold
outlet.
To avoid personal injury, never operate the agitator
outside of a drum.
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F
IG. 3. Adjust Location of Hub/Blade Assemblies
2. To install the agitator on the container cover, drop
the folding blade sections through the drum bung
hole, then screw the bung adapter into the bung
hole. See Dimensions, page 9.
Angled Adaptor
If the agitator is used on a drum with an off-center bung
and the blades would contact the side of the drum, the
angled adaptor must be used to avoid this contact.
1. Thread the locking ring onto the angled adaptor by
hand, as far as it will go.
2. Thread the angled adaptor into the bung until it bottoms out, then back it out until the widest portion on
of the adaptor top is pointing just to the left of the
center of the drum (Fig. 4).
3. Turn down the locking ring until it contacts the drum.
Use an appropriately sized pipe wrench or adjustable wrench to tighten the adaptor down until the
widest portion of the adaptor top is in line with the
drum.
Adaptor
F
IG. 4. Angled Adaptor
313643G 5
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Operation
Operation
5. To stop the agitator, close the air valve in the air
supply line (if you have one), or close the agitator
needle valve (11).
Pressure Relief Procedure
1. Turn off the air regulator and close main air shutoff
valve.
2. Disconnect the air line from the motor air inlet.
Operate the Agitator
1. Fill the fluid supply container.
2. Start the agitator and run it slowly.
3. Use the needle valve (11) to regulate the agitator
speed. Set the agitator at a speed that minimizes
vibration.
NOTE: If an air shutoff valve is installed in the supply
line and used to stop the agitator, the same agitator
speed will be set each time the agitator is used. Part
numbers for Graco air shutoff valves are listed below:
Check Fluid Viscosity
If the agitator is in a closed drum, remove the agitator to
check fluid viscosity or siphon some fluid from the
3/4 npt drum port.
Maintenance
Lubricate the Air Motor
NOTICE
Not lubricating the air motor will cause air motor failure.
If an air line lubricator is not installed, the air motor must
be manually lubricated every 8 hours. Lubricate the agitator air motor by placing 10 to 20 drops of SAE #10
lightweight oil in the motor’s air inlet. Run the agitator for
about 30 seconds.
Air Shutoff Valve
Part
208390
208391
208392
208393
4. Operate the agitator continuously while supplying
paints or other fluids to the system.
Do not operate the agitator at a high speed for a long
period of time. Excessive agitator speed can cause
foaming of fluid (making the fluid unusable), vibration,
and increased wear on parts. Always agitate the fluid
only enough to maintain even mixing.
6 313643G
Description
1/4 npt(m) x 1/4 npt(m)
3/8 npt(m) x 3/8 npt (f)
3/8 npt(f) x 1/4 npt(m)
3/8 npt(m) x 3/8 npt (m)
NOTICE
Repair
Flush the Air Motor
If the motor is sluggish or inefficient, flush it with
non-flammable solvent in a well-ventilated area.
1. Follow the Pressure Relief Procedure. See
page 6.
2. Add several teaspoons of solvent, or spray the solvent directly into the motor.
3. Rotate the shaft by hand in both directions for a few
minutes.
4. Reconnect the air line and slowly apply pressure
until there is no trace of solvent in the exhaust air.
5. Lubricate the motor with a squirt of lightweight oil in
the chamber.
Service
Air Motor
1. To remove the air motor for service, use a 3/16 hex
to remove the three setscrews (9) on the bung
adapter (4).
2. Lower the adapter (4) on the shaft (2) so coupler (3)
is accessible.
3. Use a 1/8 hex to remove the top two setscrews (8)
on the coupler (3).
Repair
Shaft and Agitator Blades
1. Remove the shaft (2) from the drum. Clean with a
compatible solvent and inspect the shaft (2) and
blades (6, 7) for wear or damage.
2. If parts need replacing, follow steps 1-4 under Air
Motor to remove the air motor.
3. Use the 1/8 hex to remove the other two setscrews
(8) on the coupler.
4. Slide the shaft off (2).
5. If needed, use a 3 mm (1/8 in.) hex to remove the
setscrew (8) on the hub assembly (6 or 7). Slide the
hub/blade assembly off of the shaft.
6. To install a new hub/blade assembly, slide it onto the
shaft. The setscrew must always remain on the top,
with the blades hanging down, so the blades will
pass into and out of the bung hole.
NOTE: Air Motor Repair Kits are available. Order Part
207335 for Model 24C728 (low viscosity) or Part 224954
for Model 24C729 (high viscosity).
Reassembly
1. Slide the shaft (2) into the coupler (3). Use a 1/8 hex
to tighten the setscrews (8). Torque to 65 in-lb
(7.3 N•m).
2. Raise the bung adapter (4) on the shaft (2) to reconnect to the air motor. Use a 3/16 hex to tighten the
three setscrews (9) on the bung adapter. Torque to
80 in-lb (9 N•m).
4. Lift the air motor (1) straight up off the coupler (3).
• If the air motor (1) requires more than installation of
a service kit, it is usually quickest and easiest to
send it to the Graco distributor for repair or replacement.
• If the air motor blades need replacing or foreign
material is present in the motor chamber, an experienced mechanic may remove the end plate opposite
the drive shaft end. Do not pry with a screwdriver. It
will dent the surface of the plate and body, causing
leaks. Use a puller tool, which will remove the end
plate while maintaining the position of the shaft.
313643G 7
Parts
Parts
1
Torque to 65 in-lb (7.3 N•m)
2
Torque to 80 in-lb (9 N•m)
2
12
1
1
8
7
16
11
13
4
2
9
15
3
1
8
7
6
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8 313643G
Part No/Description
Ref.
No. Part No. Description Qty.
1*
16A871
111310
2 16A867 SHAFT, drive 1
3 24D686 COUPLER, agitator; includes 4 set-
4 24D687 ADAPTER, bung, double; includes
6 24C861 HUB, assembly, with 3.5 in. blades;
7 24C860 HUB, assembly, with 2.5 in. blades;
8 102207 SETSCREW, 1/4-20, sst (included
9 101679 SETSCREW, 3/8-24, sst (included
11 206264 VALVE, needle 1
12 169969 FITTING, air line 1
13 113779 MUFFLER 1
15 116343 GROUND SCREW 1
16 113082 O-RING 1
17 16H294 ADAPTOR, angled (not shown) 1
18 16H295 RING, locking (not shown) 1
MOTOR, air
Low Viscosity (Model 24C728)
High Viscosity (Model 24C729)
screws (Item 8)
3 setscrews (Item 9) and ground
screw (Item 15)
includes setscrew (Item 8)
includes setscrew (Item 8)
with Items 3, 6, and 7)
with Item 4)
Parts
1
1
1
2 in.
1
2
7
3
npsm
A
1/8 npt
B
1-1/2 in.
npsm
* Air Motor Repair Kits may be purchased separately.
Order Kit 207335 for Model 24C728 (low viscosity) or
Kit 224954 for Model 24C729 (high viscosity).
Dimensions
2 in. Bung Adapter
Model 24C728
Dimension
A 4.2 in. (107 mm) 5.1 in. (130 mm)
C (Minimum) 29.8 in. (757 mm) 29.8 in. (757 mm)
D (Maximum) 32.8 in. (832 mm) 32.8 in. (832 mm)
1-1/2 in. Bung Adapter
Dimension
B 5.2 in. (132 mm) 6.1 in. (155 mm)
E (Minimum) 28.8 in. (730 mm) 28.8 in. (730 mm)
F (Maximum) 31.8 in. (807 mm) 31.8 in. (807 mm)
(low viscosity)
Model 24C728
(low viscosity)
Model 24C729
(high viscosity)
Model 24C729
(high viscosity)
C
D
E
F
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313643G 9
Technical Data
Technical Data
Maximum working pressure 100 psi (0.70 MPa, 7.0 bar)
Maximum recommended agitator speed . . . . . . . . . . . . . 500 rpm
Air consumption at 400 rpm with 100 psi (0.7 MPa, 7 bar)
air inlet pressure
Model 24C728 (low viscosity) . . . . . . . . . . . . . . . . . .
Model 24C729 (high viscosity). . . . . . . . . . . . . . . . . .
Noise Level at 100 psi (0.7 MPa, 7 bar), maximum load*
Model 24C728 (low viscosity)
Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Model 24C729 (high viscosity)
Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wetted Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303, 18-8, and 304 stainless steel
Bung adapter thread sizes . . . . . . . . . . . . . . . . . . . . . . . . 1 1/2-11.5 npsm and 2-11.5 npsm
Weight
Model 24C728 (low viscosity) . . . . . . . . . . . . . . . . . .
Model 24C729 (high viscosity). . . . . . . . . . . . . . . . . .
12 scfm (0.34 m
22 scfm (0.62 m
72.32 dB
80 dB
75.74 dB
82.32 dB
9.6 lb (4.4 kg)
13.1 lb (5.9 kg)
3
/min)
3
/min)
* Tested in water to ISO 9614-2.
10 313643G
Technical Data
313643G 11
Graco Standard Warranty
Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name to be free from defects in
material and workmanship on the date of sale 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 of 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.
THIS WARRANTY IS EXCLUSIVE, AND IS IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
TO WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE.
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, 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.
Graco Information
For the latest information about Graco products, visit www.graco.com. For patent information, see
www.graco.com/patents.
TO PLACE AN ORDER, contact your Graco distributor or call to identify the nearest distributor.
Phone: 612-623-6921 or Toll Free: 1-800-328-0211 Fax: 612-378-3505
All written and visual data contained in this document reflects the latest product information available at the time of publication.
GRACO INC. AND SUBSIDIARIES • P.O. BOX 1441 • MINNEAPOLIS MN 55440-1441 • USA
Copyright 2009, Graco Inc. All Graco manufacturing locations are registered to ISO 9001.
Graco reserves the right to make changes at any time without notice.
Original instructions. This manual contains English. MM 313643
Graco Headquarters: Minneapolis
International Offices: Belgium, China, Japan, Korea
www.graco.com
Revised December 2012
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