Spray Adjustments; Applicator); Air Flow Valve Adjustment; Material Flow Adjustments - Graco 262927 Instructions Manual

Spray Adjustments (Mortar Spray Applicator)

Spray Adjustments

Adjustments (Mortar
Spray Spray Adjustments
Figure 28
Key:
Key: Key:
M Needle Valve for Air Assist Flow Control
U Air Assist Shutoff Ball Valve
CA Air Assist Air Line
CB Air Needle (adjustable position)
CC Air Needle Retaining Screw
CD Fluid Housing
CE Tip (Nozzle)
CF Rubber Tip Retainer
General Adjustments Adjustments
General General Adjustments
The spray pattern can be adjusted by changing:
• Tip (CE) size
• Fluid flow, use air motor regulator adjustment knob
(G)
• Air flow, use needle valve (M)
• Air needle (CB) position
Adjust Adjust Adjust Air Air Flow: Air Flow: Fully open the air assist valve (U), Flow:
while adjusting the needle valve (M) for the minimum
air flow necessary for a good pattern. Air bleeds from
the applicator nozzle whenever the applicator air
assist valve (U) is open. Close the valve to stop the
air flow, if desired. Otherwise, the air valve can stay
open during priming. Air must be on prior to fluid flow.
Adjust Air Air Needle Needle (CB) (CB) position:
Adjust Adjust Air Needle (CB)
needle (CB) is slightly behind the tip (CE).
24
(Mortar Spray
(Mortar
M
U
position: Ensure the air
position:
Spray Applicator)

Applicator)

Spray Applicator)
CA
Note
NOTE: NOTE: NOTE: Installing needle too far forward can
restrict or completely block material flow.
This can result in the retainer (CF) blowing
off. Installing the needle too far back can
raise the pressure behind the fluid enough
to blow the retainer (CF) off and can cause
dripping.
Air Flow Flow Valve Valve Adjustment
Air Air Flow Valve
To decrease air flow, turn valve knob clockwise.
To increase air flow, turn valve knob
counterclockwise.
Check material and thin 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 applicator thoroughly at the end of each
use. Tips and retainers must be cleaned by hand.
Material Flow Flow Adjustments Adjustments
Material Material Flow Adjustments
For a lighter spray pattern, adjust the air needle
closer to the fluid nozzle and/or reduce the fluid flow.
For a heavier spray pattern, adjust the air needle
farther back from the fluid tip and/or increase the
fluid flow.
Note
NOTE: NOTE: NOTE: Withdrawing needle too far can force
air pressure back into fluid hose, slowing
material flow.
Adjustment
Adjustment
332612C