Eastwood 11737 User manual

Dual Blaster
Instructions
Part #11737

Eastwood’s Dual Blaster allows you to strip, clean and blast with our Patent Pending, specially de-
signed “mixing valve” to instantly switch from Soda Media to Abrasive and back again in seconds.
READ ALL INSTRUCTIONS BEFORE OPERATING – SAVE THESE INSTRUCTIONS
Thank you for purchasing an Eastwood Dual Blaster. Before attempting to operate your new blaster,
please read these instructions thoroughly. You will need these instructions for the safety warnings, pre-
cautions, assembly, operation, maintenance procedures, parts list, diagrams, and trouble shooting.
Write the invoice number below and keep your invoice with these instructions. Keep the instructions
and invoice in a safe, dry place for future reference.
The warnings, cautions and instructions discussed in this instruction manual can-
not cover all possible conditions or situations that could occur. It must be understood by the opera-
tor that a certain level of expertise is required before attempting to operate this equipment.
2 © Copyright 2009 Easthill Group, Inc. Printed in the United States of America
Invoice # _____________________________________

To order parts and supplies, call 1-800-345-1178 or visit www.eastwood.com 3
SAFETY INFORMATION
Pressure blasters and blast cabinets emit abrasive particles under high pressure.
Adequate respiratory, eye, and body protection must be utilized at all times during product operation.
Inhalation of silica based blast media particles have been known to cause cancer and other deadly
diseases and must be avoided. Always wear NIOSH approved respiratory protection when operating
this equipment.
•Do not use any sand or silica based abrasives with this blaster. Silica based abrasives have been
linked to severe respiratory disease.
•Read the manual carefully before beginning. Learn the blaster’s applications and limitations as
well as potential hazards.
•The Soda Blasting side of the equipment is color coded GREEN and the Abrasive Blasting side
is color coded RED. DO NOT attempt to put Soda Media in the RED side or Abrasive Media in
the GREEN side. Damage to the equipment and operator injury can occur. Note: If this should
occur, stop work immediately, disconnect from air supply, release all pressure and drain tank by
removing cap and inverting unit. Replace cap, repressurize unit and purge all remaining media
from valves and hose.
•Keep work area clean and well lit. Cluttered or dark work areas invite accidents.
•All children should and pets should be kept away from the work area. Never let a child operate
the abrasive blaster.
•Do not operate this tool if under the influence of alcohol or drugs. Read warning labels on pre-
scriptions to determine if your judgment or reflexes are impaired while taking drugs. If there is
any doubt, do not attempt to operate.
•Use safety equipment. Eye protection should be worn at all times when operating this tool. Use
ANSI approved safety glasses. Everyday eyeglasses are NOT safety glasses. NIOSH approved
respiratory protection, non-skid safety shoes, blast hood, hard hat, and hearing protection
should be used in appropriate conditions.
•Wear proper clothing. Loose clothing, neckties, rings, bracelets, or other jewelry may present a
potential hazard when operating this equipment. Please keep all clothing clear of the tool.
•Don’t overreach. Keep proper footing and balance at all times when operating this product.
•Always disconnect the air supply and release pressure from the tank before refilling media, stor-
ing, servicing, or changing accessories. Such preventative safety measures reduce the risk of
releasing pressure accidentally.
•Use clamps or other practical means to secure and support the work piece to a stable platform.
Holding the work by hand or against your body may lead to a loss of control and result in severe
injury.
•Check for damage regularly. If any part of the tool is damaged it should be carefully inspected
to make sure that it can perform its’ intended function correctly. If in doubt, the part should be
repaired. Refer all servicing to a qualified technician. Consult Eastwood for advice.
•Always check to make sure that the dead man valve is not open before connecting blaster to air
supply. Blaster may cause damage to property or person if connected to air while the dead man
valve is open.
Continued...

4 © Copyright 2009 Easthill Group, Inc. Printed in the United States of America
•Store idle tools out of the reach of children and untrained persons. Tools may be dangerous in
the hands of untrained users.
•Drain water trap periodically during use. Do not allow moisture to fill more than 1/2 the water trap
bowl. Do not leave water standing in water trap when done with work.
•Do not allow abrasive blaster to sit pressurized while unattended or not in use.
•Make sure all equipment is rated to the appropriate capacity. For best results, set regulator and
operate at 80 to 90 PSI. DO NOT exceed 125 PSI.
•Periodically check the abrasive media delivery equipment. Valves, hoses and nozzles that carry
the abrasive media after it leaves the pressure tank are subjected to the abrasive blasting action
so they will wear out more quickly than other components.
•Release the air pressure in the tank before opening. See “Releasing Pressure from the Tank”
section. Make sure pressure gauge reads “0” before opening the tank. Do not attempt any main-
tenance on the abrasive blaster until the pressure gauge reads “0”, and it has been disconnected
from air supply.
•Maintain correct air pressure when working. DO NOT allow pressure to exceed 125 psi. The
safety valve is set to release at 125 PSI. If the safety valve releases, stop all work immediately and
release pressure from the tank (see “Releasing Pressure from the Tank” section).
Upper loop frame
Wheels
Front support loop
Abrasive tank
(red valves)
Inlet manifold
Soda tank
(green valves)
Blast hoses
2-1
manifold
Moisture trap/inlet
valve
Pressure
gauge
Hardware/
Te fl on tape
Funnel
Face shield
Blast discharge
nozzle (dead
man valve)
Mounting tabs
NOTE: ABRASIVE BLASTING HOSES marked with RED VALVES – SODA BLASTING HOSES marked with GREEN VALVES

To order parts and supplies, call 1-800-345-1178 or visit www.eastwood.com 5
ASSEMBLY
1. Remove Dual-Tank Assembly from container and
place on a soft work surface for assembly.
2. Place tubular sides of the Upper Loop Frame over
the swaged ends of the Lower Frame and Axle As-
sembly. Attach to the 4 outward curved mounting
tank mounting tabs with 2 supplied 1/4” long Phillips
head screws and nuts.
3. Place 2 wheels with offset hubs inward onto axle
ends with washers on outboard ends. Push Cot-
ter Pins through holes in axle and bend split ends
around axle.
4. Slide the Front Support Loop over the leg stubs
welded to the front of the tanks. Place a cotter pin in
each hole and fold split ends over.
5. Attach Inlet Manifold to the tab on the crossmember
of the Frame Assembly with 4 included 1/2” long
socket head cap screws.
6. Using Teflon Tape, thread the Pressure Gauge into
the open port on the top of the Inlet Manifold and
tighten.
CAUTION: these are tapered pipe threads and over
tightening will cause permanent damage.
7. Using Teflon Tape, thread the Moisture Trap and In-
let Valve into the rear facing port of the Inlet Manifold
and tighten. Caution: these are tapered pipe threads
and over tightening will cause permanent damage.
IMPORTANT NOTE: The Eastwood Dual Blaster
combines two separate blasting systems using one
Discharge Nozzle. The Soda System is identified
with GREEN valves while the Abrasive System is
identified with RED valves. When viewed from the
back (wheel side) the RED (Abrasive) is on the LEFT
and the GREEN (Soda) is on the RIGHT. When
making hose connections, it is vitally important to
keep the systems as designated.
8. Using Teflon Tape, thread the female fitting of the
right (SODA) pressure hose into the right front male
fitting on the Inlet Manifold and tighten.
CAUTION: these are tapered pipe threads and over
tightening will cause permanent damage.
9. Repeat previous step for the left (ABRASIVE)
pressure hose.
Continued...
Step 3
Step 3
Step 2
Step 2
Step 5
Step 5
Step 4
Step 4
Step 7
Step 7
Step 6
Step 6
Step 8
Step 8

6 © Copyright 2009 Easthill Group, Inc. Printed in the United States of America
10. Flip the unit gently on its back with the Frame Loop
and wheels supporting the weight providing access
to the manifold assemblies on the underside of the
tank.
11. Attach the right side SODA blast hose (GREEN
VALVE) to the barbed fitting and securely tighten
the hose clamp. Note: Be certain that the GREEN
VALVE at the tank end corresponds to the GREEN
VALVE at the Discharge Nozzle end.
12. Repeat previous step for the left (ABRASIVE)
blast hose.
13. Using Teflon Tape, thread the Blast Discharge
Nozzle to the 2-in-1 Manifold.
CAUTION: these are tapered pipe threads and over
tightening will cause permanent damage.
BEFORE BEGINNING
Before beginning any blasting, the separate Soda Blasting and Abrasive Blasting systems must be
individually adjusted for optimal flow. Failure to do so will result in inefficient operation and wasted
media. This manual is divided into two sections, Blasting With Soda and Blasting with Abrasive
Media. Please follow the individual following procedures for Soda Blasting (GREEN SIDE) and
Abrasive Blasting (RED SIDE).
SODA BLASTING (Green Valves)
Although the Bicarbonate of Soda (Baking Soda) blasting media itself is safe in most
situations, appropriate care should be taken when using or disposing as some removed paints
and coatings may contain some levels of hazardous materials such as lead, zinc chromate, etc.
Additional protection may be required in the presence of these substances.
Soda Blasting Media is highly susceptible to moisture absorption which will cause clumping and
erratic operation. To insure proper function, it is imperative to have an effective moisture filter and
or desiccant system in the air supply immediately before the Air Inlet. Be sure to drain any moisture
captured in the moisture filter before and after each use. Failure to do so may cause “caking” of
media and complete blockage of equipment.
Steps 11-12
Steps 11-12
Step 13
Step 13

To order parts and supplies, call 1-800-345-1178 or visit www.eastwood.com 7
SODA OPERATION
1. Carefully fill the unit per Blaster Instructions using
a screen sifter and funnel. Note: a suitable screen
sifter such as Eastwood #50417 Sifter/Funnel
must be used to capture any clumps present in
the bag of media.
2. Close all four valves and connect the air supply.
DO NOT EXCEED 125 PSI. For best results, be-
gin with a blaster inlet pressure of 80 to 90 PSI.
To avoid media clumping or caking, be certain to
have a clean, moisture free air supply that includes
an effective moisture filter or desiccant system.
3. Open the Inlet Air Supply Valve slowly and
carefully while checking for leakage.
4. Slowly open the Throttling Valve (Fig. 1) to the
1⁄2 position while checking for leakage.
Note: This valve will require fine tuning to provide
optimal media flow based on media formulation,
air pressure and desired volume.
5. Slowly open the Media Flow Valve (Fig. 2) to the
full position while checking for leakage.
6. You may now direct the nozzle toward your work
and depress the Nozzle Discharge Lever.
Note: Some slow, pulsing discharges of media can be expected until the flow begins.
7. Once a steady flow of media is observed, begin by holding the nozzle 6” to 12” from the work
surface at a 30°-45° angle for best results.
8. Hold the stream against the work until it abrades through the coating revealing an edge.
8. Use the stream as a “wedge” working at the edge to quickly remove the coating.
10. At this point you can vary the position of the Throttling Valve (Fig. 1) from the initial 1⁄2 open
starting setting to achieve an optimum air/media ratio. Note: As there are many variables affect-
ing the flow such as media formulation, hardness of coating, air volume, air pressure and atmo-
spheric conditions, this process requires a bit of “trial and error” by experimenting with distance,
angle and throttle position. You will quickly become proficient at determining the ideal settings.
11. When refilling the tank becomes necessary, first shut off the Inlet Air Supply Valve, The Throttling
Valve and The Flow Valve. For safety, disconnect the air supply. Next, open the Purge Valve
to release all tank pressure. You may then open the Tank Filler Cap and refill following the
procedure in step 1.
12. All unused media MUST be drained from the tank when completing work as any moisture
present in the tank will drain to the bottom of the tank and can create a solid “cake” with the
media, requiring complete disassembly of the apparatus at the bottom of the tank.
Note: Failure to properly seal or over tightening fittings can lead to component failure which
could result in sudden air pressure release and cause serious injury.
13.
To drain unused media from the tank, place the open end of The Clear Purge Hose into a suitable
container such as a large bucket or sturdy box with closed seams and cover with a blanket. Using
extreme care, slowly open the Purge Valve and direct the stream of media into the container.
Throttle Valve
(shown in
halfway
position)
Figure 1
Figure 2 Media Flow Valve

8 © Copyright 2009 Easthill Group, Inc. Printed in the United States of America
TROUBLESHOOTING SODA BLASTING
1. The most common problem encountered with Soda Blasting is clumping of media due to
moisture contamination. If media stops flowing, stop all work and “burp” (quickly open and
close) the Purge Valve allowing a minimal discharge of media from the Clear Purge Hose.
Be certain to direct the discharge to a safe area. Placement of the hose in a cardboard box
covered with a blanket is strongly recommended.
2. If a purge fails to restore flow, stop all work and close the Throttle Valve fully. You can then
depress the Nozzle Discharge Lever several times which will discharge a quantity of media
under tank pressure clearing the clumping.
3. It is strongly advisable to drain all unused media when completing work as any moisture
present in the tank will drain to the bottom of the tank and can create a solid “cake” with the
media. Should this occur, it will require complete disassembly of the apparatus at the bottom
of the tank for cleaning.
4. If results become erratic or undesirable, remember that there are many variables affecting the
flow such as media formulation, hardness of coating, air volume, air pressure and atmospheric
conditions, this process requires a bit of “trial and error” by experimenting with distance, angle
and throttle position. By adjusting Throttle Valve position (Fig. 1) between 1⁄2 and full open and
varying the distance of the nozzle to work surface along with the angle, optimal performance can
quickly be restored. Refer to steps 8 through 11 in the Operation section for the procedure.
WORK AREA PREP AND CLEANUP
1. Soda Blasting generates a considerable amount of fine bicarbonate of soda dust. If working
outdoors, be aware of wind direction, open windows, vegetation, vehicles, pets, people and
property. It may be helpful to place a fine mist, garden hose lawn sprinkler downwind of the
blasting site to suppress dust generation.
2. It is best to cover the work area under and surrounding the vehicle or object to be stripped with a
3 mil or thicker plastic sheet material to assist in cleanup. You may also wish to tape up window
seals and other areas to keep unwanted dust out of a vehicle.
3. Bicarbonate of Soda itself is virtually harmless to the environment however, in higher
concentrations; it may cause browning of vegetation. Care should be taken to avoid
depositing excess soda on plant life.
4. When finished, the plastic sheeting with the used soda media can be rolled up and disposed of,
reducing sweep up time. The remainder should be swept up and disposed of. Any remaining
soda residue is water soluble and can be hosed away.
Important Note: Although the Bicarbonate of Soda blasting media itself is safe in most
situations, appropriate care should be taken when using or disposing as any removed paint
or coating can contain some levels of hazardous materials such as lead, zinc chromate, etc.

To order parts and supplies, call 1-800-345-1178 or visit www.eastwood.com 9
HELPFUL TIPS
• Soda Blasting leaves behind a thin protective film which, if left untouched, will prevent surface
rust from forming on bare steel surfaces for up 6 weeks or even longer if stored in a dry,
protected area. This film must be removed before painting by wiping down with water dampened
Microfiber cloths or suitable lint-free towels. It is best to soak the cloth, wring out excess water,
wipe off soda residue, rinse often and immediately follow up with a dry lint-free towel.
• Any soda media left in body seems or crevices can be removed with a small shop vacuum and
a fine tipped blow gun. Be sure to wipe surrounding areas as described above.
• To prevent flash rust or oxidation from appearing on metal surfaces after water wipe down
but before painting, treat surfaces with Eastwood Fast-Etch™ #19416Z.
AIR SUPPLY AND MEDIA CONSUMPTION
This data is approximate and is presented for comparison use. Due to the many
variables such as; compressor capacity, air line size, grade and grit size of media used,
coating thickness and hardness, individual results will vary.
Nozzle Size CFM @ 80 PSI Approximate Media Usage Area
2mm 6 25 lbs/hr 135 sq. in./hr
2.5mm 12 35 lbs/hr 180 sq. in./hr
3mm 20 60 lbs/hr 250 sq. in./hr
3.5mm 25 75 lbs/hr 425 sq. in./hr

10 © Copyright 2009 Easthill Group, Inc. Printed in the United States of America
ABRASIVE BLASTING (Red Valves)
Always wear your blast hood, NIOSH approved respiratory protection,
ANSI-approved safety glasses and heavy duty canvas gloves when operating the abrasive blaster.
Before operating your abrasive blaster, inspect each connection, double checking
to make sure that all are tight and properly sealed.
THIS MACHINE IS NOT INTENDED FOR USE WITH SILICA BASED ABRASIVES.
SILICA BASED ABRASIVES HAVE BEEN LINKED TO SEVERE RESPIRATORY DISEASE.
Loading Abrasive
1. Before opening tank, be sure that it is not pressurized and the air gauge reads “0”.
2. To release the pressure from the Tank, press Blast Discharge Nozzle until air stops.
3. Check to make sure the abrasive is dry and clean so that it does not clog the unit.
4. Close the brass Air Supply Valve by turning it to the vertical position.
5. Remove the Filler Cap.
6. Using the Funnel, pour the selected abrasive media into the tank. Do not fill the tank more than
3/4 full. If humidity in your region is 90% or more, only fill the tank half full and check the water
trap more frequently.
7. Close the Filler Cap securely, assuring o-ring is in place.
To avoid damage, it is advisable to have your compressor located in another room
away from damaging debris.
To Start Abrasive Blasting
Start with all valves in the closed position. Following the instructions below will help
prevent the formation of clogs in the abrasive hose, outlet manifold and the Blast Discharge Nozzle.
1. Connect air compressor to the Inlet Connector.
2. Open Air Supply Valve.
3. Open Throttling Valve.
4. Check for leaks at the Filler Cap and along all hoses and fittings as the system pressurizes.
If leaks are observed, release the pressure from the tank and repair immediately.
5. Point Blast Discharge Nozzle in a safe direction away from people, pets or anything around
you that may be harmed by direct or indirect abrasive spray.
6. Press and hold Blast Discharge Nozzle until air is flowing through the nozzle.
7. With the Blast Discharge Nozzle open, slowly open the Abrasive Control Valve until abrasive
material begins to flow out of the Blast Discharge Nozzle.

To order parts and supplies, call 1-800-345-1178 or visit www.eastwood.com 11
8. Abrasive Flow Adjustment as follows: Note: The Abrasive Flow is a finely tuned combination
of two adjustments which can vary with different media and atmospheric conditions.
•Adjust air pressure with the Throttling Valve. The Throttling Valve controls the velocity of
material flow.
•Adjust abrasive flow with Abrasive Control Valve. The Abrasive Control Valve controls
the amount of abrasive in the stream.
•Watch for abrasive clogging. Release pressure from the tank if necessary and replace
the abrasive with drier or cleaner abrasive.
9. Begin blasting.
To Stop Blasting
1. While continuing to press and hold the Blast Discharge Nozzle, turn the Abrasive Control Valve
to the closed position (this is to prevent any clogging.)
2. When you notice only air (no abrasive) is coming out of the Blast Discharge Nozzle, you can
stop the air flow by releasing the trigger. This ensures a clean and clog-free manifold, hose,
and safety trigger.
Releasing Pressure From The Tank
1. When you are finished blasting, point Blast Discharge Nozzle in a safe direction away from
people, pets or anything around you that may be harmed by direct or indirect abrasive spray.
2. Press and hold the Blast Discharge Nozzle to expel any remaining abrasive material from
the Abrasive Hose.
3. Close the Abrasive Control Valve.
4. Release pressure on the Blast Discharge Nozzle.
5. Close the Throttling Valve and the Air Supply Valve.
6. Disconnect air supply hose from abrasive blaster.
7. Press the Blast Discharge Nozzle until air stops flowing and Pressure Gauge reads “0”.
Pay particular attention to the Abrasive Hose, the Abrasive Control Valve, and the
Nozzles as they will wear out much more quickly than the other pieces.
The Abrasive Hose needs to be replaced immediately if its side walls develop leaks or show blisters
in the surface. Do not use if any of these problems are present.

12 © Copyright 2009 Easthill Group, Inc. Printed in the United States of America
ABRASIVE SELECTION
The kind of abrasive you choose will greatly influence the amount of time needed to clean a given
surface area. Abrasive materials include glass beads, aluminum oxide, and others. For best results,
use 80 grit abrasive or finer. Do not exceed 80 grit media size.
•Make sure that the abrasive you use is thoroughly dry. Damp abrasive can cause clogging of
your abrasive blaster.
•While you may reuse abrasive, remember that abrasive does wear out. After use, abrasive
becomes smoother and rounder, thus reducing abrasive effectiveness.
•Reusing abrasive may also cause clogging due to debris contained in the mixture from prior use.
SWITCHING BETWEEN SODA (Green)
AND ABRASIVE (Red)
1. Release Blast Discharge Nozzle shutting off the media flow.
2. Close Soda Valve (Green) and open Abrasive Media (Red) to switch from Soda to Abrasive.
3. Depress Safety Trigger allowing flow although the opposite media will continue to flow until the
hose has cleared.
Full Soda – No Abrasive Infinite Mix Between
Soda/Abrasive
Full Abrasive – No Soda
GREEN
VALVE
fully open
RED
VALVE
fully closed
GREEN
VALVE
partially
open
RED
VALVE
partially
open
GREEN
VALVE
fully closed
RED
VALVE
fully open

To order parts and supplies, call 1-800-345-1178 or visit www.eastwood.com 13
MAINTENANCE
1. Keep your Eastwood Dual Blaster clean, and protect it from damage.
2. Release pressure from the tank after each use.
3. When initially pressurizing, check for leaks at the tank top and at all hoses and fittings. Leaking
joints may be repaired by replacing worn or damaged parts and using teflon tape at joints.
4. Check for worn abrasive hose and fittings. The Abrasive Control Valve, manifold, and all parts
after the abrasive is ejected from the tank are subject to rapid wear due to the flow of abrasive.
Watch especially for leaks, blistering, bulging or thinness of the hose. Replace any parts which
appear worn.
SPECIFICATIONS
Tank Volume.................10 gallons / 100 lbs. abrasive or 75 lbs. of soda media.
Hose Length ................8 ft. x 1/2” i.d.
Working Pressure........60-125 psi
Air Consumption .........6-25 cfm
AIR/ABRASIVE SUPPLY REQUIREMENTS
Hose ID Hose L Nozzle ID Approx. Compressor HP CFM@125 psi Abrasive Use/Hr
3/8” 50’ 2 2 6 30 lbs.
3/8” 25’ 2.5 4 12 80 lbs.
1/2” 50’ 3 7 20 120 lbs.
1-1/2” 15’ 3.5 10 25 150 lbs.

14 © Copyright 2009 Easthill Group, Inc. Printed in the United States of America
WARRANTY
This product has a one year warranty covering any manufacturing defects. Despite our strict
quality control standards implemented during our manufacturing process, sometimes a product
gets shipped that does not meet our specifications. If you have a product that does not work
correctly within 30 days of your purchase, send the product and the original receipt to the
Eastwood Company for credit or replacement. Before returning any product, you must contact
the Eastwood Company at 800-345-1178 to acquire a Return Authorization Number.
When sending your product you must include:
1. A copy of the dated receipt showing the original purchase,
2. Your full name, street address and telephone number.
Please ship to:
The Eastwood Company
263 Shoemaker Rd.
Pottstown, PA 19464
ATTN: Warranty Return
Always wear your blast hood, NIOSH approved respiratory protection,
ANSI-approved safety glasses and heavy duty canvas gloves when operating the abrasive blaster.
Before operating your abrasive blaster, inspect each connection, double checking
to make sure that all are tight and properly sealed.
THIS MACHINE IS NOT INTENDED FOR USE WITH SILICA BASED ABRASIVES.
SILICA BASED ABRASIVES HAVE BEEN LINKED TO SEVERE RESPIRATORY DISEASE.

To order parts and supplies, call 1-800-345-1178 or visit www.eastwood.com 15

If you have any questions about the use of this product, please contact
The Eastwood Technical Assistance Service Department:
1-866-759-2131 email: [email protected]
The Eastwood Company
263 Shoemaker Road, Pottstown, PA 19464, USA
US and Canada: 1-800-345-1178 Outside US: 610-718-8335
fax: [phone] www.eastwood.com
Instruction Manual #11737Q - Rev. 3/09
NOTES