Spraying Techniques; Unclogging Spray Tip - Graco Tradeworks 150 Operation Manual

Setup

Spraying Techniques

Preventing Excessive Tip Wear
• Spray should be atomized (evenly distributed, no
gaps at edges). Start at low pressure setting,
increase pressure a little at a time until you see a
good spray pattern, without tails.
• Spray at lowest pressure that atomizes paint.
• If maximum sprayer pressure is not enough for a
good spray pattern, tip is too worn. See Reversible
Spray Tip Selection Chart, page 21.
tails-gaps
at edges
pressure
too low
If tails persist when spraying at the highest
pressure, a smaller tip is needed or the
material may need to be thinned.
Adjust Spray Pressure
This sprayer is set up for most airless spraying applica-
tions. Details on tip selection, tip wear, coat thickness,
etc. are provided on page 21.
Motor only runs when gun is triggered. Sprayer is
designed to stop pumping when gun trigger is
released.
Align setting indicator with function symbol on Pressure
Control knob, page 16.
• Turning knob to right (clockwise), increases pres-
sure at gun.
• Turning it left (counter-clockwise), decreases pres-
sure.
• General spraying instructions are provided in Get-
ting Started with Basic Spraying Techniques section
of this manual, page 22.
20
good
spray pattern
ti5592a

Unclogging Spray Tip

To avoid fluid splashback:
• Never pull gun trigger when arrow-shaped handle is
between SPRAY and UNCLOG positions.
• Tip must be pushed all the way into guard.
1. To UNCLOG tip obstruction, engage trigger lock.
ti8908a
2. Point arrow-shaped handle backward to UNCLOG
position.
ti12971a
3. Aim gun at piece of scrap or cardboard.
4. Unlock trigger lock. Pull trigger to clear clog.
ti8909a
5. When obstruction is cleared, engage trigger lock
and rotate arrow-shaped handle back to SPRAY
position.
ti12970a
Point the arrow-shaped handle on the spray tip
forward to SPRAY and backward to UNCLOG
obstructions.
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