Spray Adjustments (Pole Spray Applicator); General Adjustments; Spraying Techniques; Material Flow Adjustment - Graco ToughTek S340e Operation, Repair, And Parts

Spray Adjustments (Pole Spray Applicator)

CA
ti28419b
Key:
CA Air Assist Air Line
CB Air Assist Shutoff Ball Valve
CC Rubber Tip Retainer
CD Air Needle (adjustable position)
CE Air Needle Retaining Screw
CF Fluid Hosing
CG Tip (Nozzle)
NOTE: See the Pole Spray Applicator manual for model
information.

General Adjustments

The spray pattern can be adjusted by changing:
•
Tip (CG) size
•
Fluid and/or air flow
•
Air Needle (CD) position
The standard applicator adjustment is to adjust the air needle
(CD) slightly behind the fluid tip. Fully open the air ball valve
(CB) for the minimum air flow necessary for a good pattern.
NOTE: Installing the needled (CD) too far forward can reduce
the orifice size, stopping material flow.
Air bleeds from the applicator nozzle whenever the applicator
air ball valve (CB) is open. Close the valve to stop the air if
desired. Otherwise, the air valve can stay open during priming.
Adjusting the spray pattern requires testing to balance the fluid
flow and the air to the applicator, and requires the correct tip
size.

Spraying Techniques

3A3437G
CB
CD
CE
CF
1. Test the spray pattern on cardboard. Hold the applicator
18 - 30 in. (45 - 76 cm) away from the surface. Use this
spraying distance for most applications.
2. Adjust fluid flow until material flow is adequate.
3. Adjust the applicator air ball valve (CB) to achieve a
CC
uniform round spray pattern.
4. Consider the size of aggregate in the material and the
CG
coarseness of the spray pattern. Larger nozzles allow
heavier patterns.
5. Overlap each stroke 50%. A circular overlapping pattern
may give the best results.
When spraying small confined areas use the air ball valve
(CB) and air needle (CD) to make fine adjustments without
adjusting the pump.

Material Flow Adjustment

For a lighter spray pattern, adjust the air needle (CD) closer to
the fluid nozzle and/or reduce the fluid flow. For a heavier
spray pattern, adjust the air needle (CD) father back from the
fluid tip and/or increase the fluid flow.
NOTE: Withdrawing the needled (CD) too far can force air
pressure back into the fluid hose, which can slow material
flow.

Air Flow Valve Adjustment

To decrease air flow, turn the air ball valve (CB) clockwise. To
increase air flow, turn the air ball valve (CB) counterclockwise.
Check the material ad thing it as needed to maintain the
proper consistency. The material may thicken as it sits and
could slow down application or affect the spray pattern.
Flush and dry the applicator thoroughly at the end of each use.
Blow air through the needle after the applicator is clean to
ensure that no material is blocking air flow.

Installing Nozzle Retaining Cap

1. Place the nozzle retaining cap (CC) over the top lip of the
applicator housing.
2. Turn the rubber retainer back and forth to make sure it is
fully seated.
3. Turn the rubber retainer back and forth to be sure it is fully
seated.
NOTE: The rubber gasket in the cam and groove inlet fitting
and the rubber nozzle retainer should be hand-cleaned and
dried after each use.
Spray Adjustments (Pole Spray Applicator)
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