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6

308544

Application

Sand Mesh

Sand mesh refers to the size of sieve through which a

particular grade of sand will pass. A “16/50” mesh means

that normally, most of these particles will pass through a

No. 16 sieve and a very small percentage will pass

through a No. 50 sieve.

NOTE

A No. 16 sieve is a mesh that has 16, 0.046 sq.
in. (1.19 mm) openings per inch.

Round Sand

This refers to the round edge of the grain of sand. River

sand is a good example of sand worn to its size by water.

Angular Sand

This

refers

to

grains

of

sand

which

have

triangular--shaped edges. Crushed rock or sand is

usually of this type.

Blasting Angle and Distance

The blasting angle can affect the nozzle distance. Always

maintain the recommended blasting angle and the

proper distance from your work surface for the best

sandblasting performance. See below.

BLASTING

ANGLE

30

15

0

NOZZLE

15

30

D

IS

TAN

C

E

A

T

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 Cut Effect)

40/60

Round

1--10

_

Paint from Wood

(Smoother, Driftwood

Effect)

20/40

Round

1--10

_

Metal Scale

20/40

Round

0--15

_

Rust

16/50

Angular

0--25

_

The blasting angle can affect the nozzle distance. Always

maintain the recommended blasting angle and the

proper distance from your work surface for the best

sandblasting performance. See below.

Paint from Metal

Paint from Masonry

Rubber Base Paint from

Masonry

Rust

Paint from Wood (Coarse,

Paint from Wood (Coarse,

Rough Cut Effect)

Paint from Wood

(Smoother, Driftwood

Effect)

Metal Scale

16/50

20/40

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...

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