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Graco TexSpray EXT HP - Page 10

Graco TexSpray EXT HP
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10 308717
Preparation
Wetting the Hose Before Spraying Texture
Material
Wet the inside of the hose before each use to flush out
sediment and to prevent the texture material from
packing out the hose.
1. The pot capacity is 5 gallons (19 liters). Add two
gallons of clean water to the pot.
NOTE: A small amount of air flow through the gun
helps to prevent material from backing up the needle
valve.
2. Partially open the gun air valve (R). (The system
primes easier if a little air is supplied to the gun.)
3. Turn the ON/OFF switch (A) ON. Adjust the
regulator (B) to pressurize the pot to about 20 psi
(138 kPa,1.4 bar). Trigger the gun into a pail.
Spray water to wet the inside of the fluid hose.
4. Turn the ON/OFF switch (A) OFF.
5. Open the gun air ball valve (R) to relieve the
compressor air. Open the pot vent valve (E) to
vent the pot.
Fig. 10
closed
R
open
ti5074a
Mixing the Material
CAUTION
This system is designed for use with only certain
types of material. Any other use could seriously
damage the unit.
D Do not use any solvent-based materials. Use
only water-based materials.
D Use only simulated acoustic and gypsum-based
wall texture materials in this system.
D Not all cementious materials can be sprayed.
Many cementious materials will damage the
sprayer.
Proper material mixture is essential. The sprayer
will not operate if the material is too thick.
Slowly add one bag of texture material to clean water
as instructed on the bag instructions. Agitate to a
smooth, lump-free consistency. Thin or thicken the
material as needed before pouring it into the pot.
For the best results, do not use partial bags of
material.
Premixed cementious material is typically sprayable;
bagged cementious material is typically unsprayable.
Perform the following procedure to determine if a
bagged material is sprayable and whether it could
damage the sprayer:
1. Mix material and wait 10 minutes.
2. If the material settles out, it will probably pack out
when you attempt to spray it, which would damage
the sprayer. Do not use the material.

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