background image

5

308544

Operation

WARNING

To reduce the risk of injury, always protect eyes

and face with goggles and mask, and hands and

arms with heavy work gloves when spraying abra-

sive materials.

Place the sand induction probe in the sand supply

container.

To Sandblast

1. Connect and open the water supply line before

starting the pressure washer.

2. Trigger the gun to relieve air in the equipment.

3. Start the pressure washer. See its instruction

manual.

4. Trigger the gun to activate the spray.

CAUTION

Always test spray on a scrap of similar material first!

The high pressure spray could damage the surface if

the sandblaster is held too close. See Step 5, below.

5. To check the distance you will need to hold the spray

nozzle from the surface, start to spray at the scrap of

material from a distance of several feet.

Gradually

move closer, checking frequently to see if

the high pressure spray is damaging the surface.

6. See the APPLICATION on page 5 for the type of

sand recommended for your work surface.

Always point the sand nozzle downward when not

spraying. This prevents water from entering the sand

supply. If water does get into the sand supply hose,

remove the probe from the sand, hold the gun trigger

open, and let the hose air dry. Always be sure the sand

hose is dry before using.

Keep the sand covered to prevent the overspray from

wetting the sand.

Do not allow small pieces of the sand bag to fall into the

sand supply. A small paper piece could prevent the flow

of sand.

NOTE:

To extend the life of the tungsten carbide sand
nozzle (3) rotate the nozzle 45

_

after every 15

minutes of use.

Sand Saver Operation (Optional)

The spring--loaded collar on the Sand--Saver rotates to

give four different rates of sand injection. From setting

number 1, (maximum sand injection) to setting number 4,

(minimum sand injection).

By experimenting with the different settings on your

Sand--Saver during sandblasting you can determine

which setting is the most economical for the job. See the

table below for approximate sand usage per minute at

each setting.

Setting

Number

Hole

Diameter

Sand Injection Rate

Pounds/Minute*

1

None

14

2

3/16”

7

3

1/4”

4.2

4

5/16”

3.6

* Sand injection was calibrated using standard 20’ length

of sand hose. Added length to sand hose will decrease

sand usage.

Shutdown

After the sandblasting operation is complete, remove the

probe from the sand, trigger the gun to clear the hose and

probe of sand. Then, remove the hose from the mixing

head and rinse with water to remove all the sand before

storage.

Before using the gun for other applications, be sure to

reinstall the tip and male quick coupler.

Always test spray on a scrap of similar material first!

The high pressure spray could damage the surface if

the sandblaster is held too close. See Step 5, below.

5. To check the distance you will need to hold the spray

nozzle from the surface, start to spray at the scrap of

2. Trigger the gun to relieve air in the equipment.

3. Start the pressure washer. See its instruction

4. Trigger the gun to activate the spray.

CAUTION

Always test spray on a scrap of similar material first!

The high pressure spray could damage the surface if

* Sand injection was calibrated using standard 20’ length

of sand hose. Added length to sand hose will decrease

sand usage.

5. To check the distance you will need to hold the spray

nozzle from the surface, start to spray at the scrap of

material from a distance of several feet.

move closer, checking frequently to see if

the high pressure spray is damaging the surface.

ATION on page 5 for the type of

sand recommended for your work surface.

Always point the sand nozzle downward when not

Before using the gun for other applications, be sure to

reinstall the tip and male quick coupler.

After the sandblasting operation is complete, remove the

probe from the sand, trigger the gun to clear the hose and

probe of sand. Then, remove the hose from the mixing

head and rinse with water to remove all the sand before

Shutdown

After the sandblasting operation is complete, remove the

probe from the sand, trigger the gun to clear the hose and

probe of sand. Then, remove the hose from the mixing

head and rinse with water to remove all the sand before

storage.

Always test spray on a scrap of similar material first!

The high pressure spray could damage the surface if

the sandblaster is held too close. See Step 5, below.

5. To check the distance you will need to hold the spray

nozzle from the surface, start to spray at the scrap of

Always test spray on a scrap of similar material first!

The high pressure spray could damage the surface if

the sandblaster is held too close. See Step 5, below.

5. To check the distance you will need to hold the spray

nozzle from the surface, start to spray at the scrap of

spraying. This prevents water from entering the sand

supply. If water does get into the sand supply hose,

reinstall the tip and male quick coupler.

Before using the gun for other applications, be sure to

reinstall the tip and male quick coupler.

Before using the gun for other applications, be sure to

reinstall the tip and male quick coupler.

Before using the gun for other applications, be sure to

Summary of Contents for 244766

Page 1: ... suction fed injection of sand into the water stream for abrasive cleaning Model 244766 5500 psi 39 MPa 385 bar Maximum Working Pressure Gun and wand not included 308544D Important Safety Instructions Read all warnings and instructions in this manual Save these instructions a 5500 psi 39 MPa 385 bar Maximum Working Pressure Gun and wand not included Parts ...

Page 2: ... in serious injury Do not alter or modify this equipment Use only genuine Graco parts and accessories rking pressure of the lowes for the maximum working pressure of this equipment Use fluids and solvents that are compatible with the equipment wetted parts See the section of all equipment manuals Read the fluid and solvent manufacturer s warnings before cleaning checking or servicing this equipmen...

Page 3: ...leaks with your hand body glove or rag D Do not blow back fluid this is not an air spray system D Follow the Pressure Relief Procedure if the spray tip clogs and before you clean check or service this equipment D Tighten all fluid connections before you operate this equipment D Engage gun safety whenever you stop spraying D Check the hoses tubes and couplings daily Replace worn or damaged parts im...

Page 4: ...ck coupler from the gun assembly Keep these parts for reinstallation on the gun after sandblasting 2 Assemble the spray tip not supplied with kit to the tip adapter 4 and male quick coupler 5 Use pipe sealant on all threads Connect the assembly to the female quick coupler on the gun 3 Assemble the mixer housing 2 to the adapter 4 Be sure that the sand inlet is located at the top of the mixing head...

Page 5: ...h water to remove all the sand before storage Before using the gun for other applications be sure to reinstall the tip and male quick coupler Always test spray on a scrap of similar material first The high pressure spray could damage the surface if the sandblaster is held too close See Step 5 below 5 To check the distance you will need to hold the spray nozzle from the surface start to spray at th...

Page 6: ... distance from your work surface for the best sandblasting performance See below BLASTING ANGLE 30 15 0 NOZZLE 15 30 DISTANCE AT 0 DISTANCE AT 30 NOZZLE DISTANCE AT 30 NOZZLE DISTANCE AT 0 Removal Of Sand Mesh Sand Type Blasting Angle Paint from Metal 20 40 Round Silica 0 30_ Paint from Masonry 20 40 Round Silica 0 20_ Rubber Base Paint from Masonry 10 35 Angular 0 15_ Paint from Wood Coarse Rough...

Page 7: ...hten hose clamps Not enough sand Incorrect water nozzle Collapsed hose Partial obstruction to sand probe Low sand level Low water pressure and or flowrate Change to 15_ spray angle Replace hose or remove restriction Clear rocks or paper from sand probe inlet Change probe to new bag of sand See Troubleshooting Chart in pressure washer instruction manual Low water pressure and or flowrate Change pro...

Page 8: ...5 SPRAY TIP SEE NOTE 2 801115 HOUSING Mixing head 1 3 801116 NOZZLE Sand 1 4 801117 ADAPTER Tip 1 disconnect 1 6 801120 GASKET 1 7 801121 BARB Hose 3 4 npt x 3 4 ID 1 800031 SAND SAVER Optional 1 A spray tip is not included with the water sandblaster kit The proper tip must be ordered separately Wetted Parts Aluminum Stainless Steel Tungsten Carbide Zinc Plated Carbon Steel Polyvinyl Chloride Buna...

Page 9: ...9 308544 Notes ...

Page 10: ...co 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...

Reviews: