Graco 308345P User Manual
Instructions – Parts List
BELT-DRIVEN, STAINLESS STEEL, PNEUMATIC
Twistork Helix Mixer
with Suction Feature
For use in closed-head, bung-type, 55-gallon drums.
100 psi (0.7 MPa, 7 bar) Maximum Working Pressure
Model 236629, Series C
Standard Mixer, 0.75 HP (0.55 kW)
Model 236760, Series C
Oil-less Reversible Mixer, 0.75 HP (0.55 kW)
308345P
EN
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
Table of Contents
Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Application 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Drawing 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts List 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Standard Warranty 20. . . . . . . . . . . . . . . . . . . . . .
Graco Information 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
03023B
0359
II 1/2 G c T3
ITS03ATEX11226
Symbols
Warning Symbol
WARNING
This symbol alerts you to the possibility of serious
injury or death if you do not follow the instructions.
WARNING
EQUIPMENT MISUSE HAZARD
Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury.
INSTRUCTIONS
This equipment is for professional use only.
Read all instruction manuals, tags, and labels before operating the equipment.
Use the equipment only for its intended purpose. If you are not sure, call your Graco distributor.
Do not alter or modify this equipment.
Check equipment daily. Repair or replace worn or damaged parts immediately.
Caution Symbol
CAUTION
This symbol alerts you to the possibility of damage to
or destruction of equipment if you do not follow the
instructions.
Do not exceed the maximum working pressure of the lowest rated component in your system. This
equipment has a 100 psi (7 bar) maximum working pressure.
Use fluids and solvents that are compatible with the equipment wetted parts. Refer to the
Technical Data section of all equipment manuals. Read the fluid and solvent manufacturer’s
warnings.
Always wear protective eyewear, gloves, clothing, and respirator as recommended by the fluid and
solvent manufacturer.
Comply with all applicable local, state, and national fire, electrical, and safety regulations.
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WARNING
FIRE AND EXPLOSION HAZARD
Improper grounding, poor ventilation, open flames, or sparks can cause a hazardous condition and
result in a fire or explosion and serious injury.
Ground all equipment. Refer to Grounding on page 5.
If there is any static sparking or you feel an electric shock while using this equipment, shut off the
agitator immediately. Do not use the equipment until you identify and correct the problem.
Do not use 1,1,1–trichloroethane, methylene chloride, other halogenated hydrocarbon solvents, or
fluids containing such solvents in aluminum pumps. Such use could result in a serious chemical
reaction, with the possibility of explosion.
Do not use kerosene or other flammable solvents or combustible gases to flush the unit.
Provide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid
being dispensed.
Keep the dispensing area free of debris, including solvent, rags, and gasoline.
Do not smoke in the dispensing area.
Keep a fire extinguisher in the work area.
MOVING PARTS HAZARD
Moving parts, such as the rotating blades of the agitator, can pinch or amputate your fingers or other
body parts and can cause splashing in the eyes or on the skin.
Keep clear of all moving parts when starting or operating the agitator.
Always shut off the agitator and disconnect the air line before you remove the agitator from the
drum or check or repair any part of the agitator.
HAZARDOUS VAPORS
Hazardous fluids or toxic fumes can cause serious injury or death if splashed in the eyes or on the
skin, swallowed, or inhaled. When flushing the air motor, keep your face away from the exhaust port.
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Application
The Twistork Helix Mixer is intended to mix and maintain paints and similar fluids in closed-head, 55-gallon (200-liter) drums with 2-in. npt bung connections. The Twistork Helix Mixer provides suction porting through its siphon
tube, which allows you to siphon fluid to a pump while mixing it.
Standard Mixer, Model 236629
The standard mixer operates in a center-lift fluid rotation mode, which is preferred in most applications
because it minimizes fluid aeration. The helix rotates
counterclockwise and mixes fluid by lifting it up from
the bottom of the drum. See Fig. 1.
Standard mixer Model 236629 cannot reverse its helix
rotation.
16a
Oil-less Reversible Mixer, Model 236760
The oil-less reversible mixer operates the same as the
standard mixer, but it uses a non-lubricated air supply,
and the helix rotation can be reversed.
NOTE: Although the air motor can operate without oil,
motor life is increased when lubrication is provided.
To reverse the helix rotation on reversible mixer Model
236760, remove the air motor muffler (16a) and needle
valve (18), and switch the ports they are installed into.
See Fig. 2.
When the helix rotation is reversed, the mixer operates
in a pull-down fluid rotation mode, which can be better
for agitating fluids that are difficult to put into suspension. The helix rotates clockwise and mixes fluid by
pulling it down from the surface. See Fig. 2.
With clockwise (pull-down fluid rotation), care must be
used at high speeds to prevent cavitation, which could
be caused by air being drawn down to the siphon inlet.
18
Fig. 1
03401B
Model 236629
Standard (counterclockwise) Rotation
18
03401B
16a
03402B
Model 236760
Reversed (clockwise) Rotation
03402B
Fig. 2
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WARNING
Installation
FIRE AND EXPLOSION HAZARD
Always maintain a minimum of 1 in.
clearance between rotating agitator parts
and container to prevent sparks from contact.
Typical Installation
air line lubricator
agitator motor
air line filter
air regulator
and gauge
mix tank
(reference only)
Grounding Instructions
Proper grounding is an essential part of maintaining a
safe system.
To reduce the risk of static sparking, all electrically
conductive objects or devices in the spray area must
be properly grounded. Check your local electrical code
for detailed grounding instructions for your area and
type of equipment.
To ground the helix mixer, connect the ground wire
(H) to the grounding lug (J) on the collar. Connect the
grounding wire clamp to a true earth ground. See
Fig. 3.
To order a ground wire and clamp, order Part No.
222011.
J
H
Fig. 3
03024
CAUTION
The bearing nut (8) is made of acetal, which is not
compatible with some of the solvents used in paints
or coatings and is not compatible with acidic fluids.
Optional Rulon bearing nut Part No. 189660 is
available. Check your material data sheet and/or
supplier for compatibility.
CAUTION
To avoid damaging the mixer, do not mount the
pump (G) directly to the mixer outlet fitting (41).
Make sure the pump is properly supported, and
install a flexible suction hose (E) between the mixer
outlet fitting and the pump, as shown in Fig. 4.
E
41
G
Fig. 4
8
03428B
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Installation
Air Line Accessories
The following air line accessories help to increase
motor life and ease of operation.
Air Line Filter
Air line filters remove harmful dirt and moisture from
the air supply. Order one of the following:
Part No. 106148: 3/8 npt(f) air line filter
Part No. 106149: 1/2 npt(f) air line filter
Air Line Lubricator (for Model 236629 only)
CAUTION
Not lubricating the air motor will cause air motor failure.
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 Lubricating the Air Motor on page
11. Order one of the following:
Part No. 214847: 3/8 npt(f) air line lubricator
Part No. 214848: 1/2 npt(f) air line lubricator
Air Line Quick-Disconnect
Install an air line quick-disconnect (F) or ball valve at
the air inlet (D). See Fig. 5. Order one of the following:
Part No. 169969: 1/8 npt(m) air line quick-disconnect
Part No. 208536: 1/4 npt(f) air line quick-disconnect
Flush the Mixer Before Using It
To prevent fluid contamination, flush the mixer with
solvent that is compatible with the fluid to be mixed.
See Flushing Instructions on page 13.
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