Troubleshooting. Graco 3A9014B, TrueCoat 360 True Airless Sprayer, Generation 2
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Troubleshooting
Troubleshooting
Check everything in this Troubleshooting
Table before you bring the sprayer to an authorized service center.
Sprayer Diagnostics
Problem
Sprayer makes sound but no material is
26
Cause
Spray Tip is clogged
Sprayer is not primed
Solution
See Clear Tip Clogs , page 19.
Repeat Start Up procedure to
Pump Filter is plugged
Prime Knob is in PRIME position
the FlexLiner. See Startup , page
Verify Cup Lid is tight. An under tightened Cup Lid will allow air to seep into the FlexLiner and cause a loss of prime. Add Seal
Lube (included) to the Cup Lid gasket to ensure an airtight seal.
If the sprayer sprays when upside down by not upright, there is likely still an air leak into the cup. Try replacing the
FlexLiner and VacuValve (extra of both included with sprayer).
Make certain there is only one
FlexLiner in the Cup Support.
Make certain there is no damage to or debris on the top sealing edge of the FlexLiner or Cup Lid gasket.
Make certain all the air is out of the FlexLiner and the VacuValve cap is properly closed.
Make certain the cup assembly is properly installed onto the sprayer.
Clean sprayer. See Cleanup , page 21.
Remove the Pump Filter from the pump. Clean both sides of the
Pump Filter. While the Pump
Filter is removed, inspect and ensure no dried paint debris is collected inside the pump inlet.
Turn Prime Knob forward to
SPRAY position.
Spray Tip is not in SPRAY position Turn Spray Tip to SPRAY position.
No or low material in FlexLiner
Refill FlexLiner. See page 11.
3A9014B
Troubleshooting
Problem Cause Solution
Sprayer sprays with poor results
Power supply
Motor has overheated
Electronic control failure
Spray Tip is partially clogged
Replace electronic control.
See Clear Tip Clogs , page 19.
Spray Tip is not in correct position See Spray Tip Installation , page 18.
Incorrect Spray Tip for application of material plugged into a grounded and functional power source.
Wait 20-30 minutes for motor to cool.
Install a different size Spray Tip.
See Reversible Spray Tips , page 18.
Replace Spray Tip.
Spray Tip is worn or damaged
Material being sprayed is aerated and full of bubbles
Let material settle or change to different material.
Material being sprayed is too cold Warm material.
Paint leaks from sprayer Pump has reached its maximum life Replace pump.
Paint leaks out of the cup threads
Cup not properly seated Verify Cup Lid is tight. An under tightened Cup Lid will allow air to seep into the FlexLiner and cause a loss of prime. Add Seal
Lube (included) to the Cup Lid gasket to ensure an airtight seal.
Make certain there is only one
FlexLiner in the Cup Support.
Make certain there is no damage to or debris on the top sealing edge of the FlexLiner or Cup Lid gasket.
Make certain the Cup Lid is properly threaded to the Cup
Support. There should be no threads visible when tight.
Avoid flexing or pushing on the
Cup Support when you evacuate the air out of the FlexLiner.
Avoid pulling down on the
FlexLiner when you evacuate the air out of the FlexLiner.
Replace FlexLiner.
3A9014B 27
Troubleshooting
Spray Pattern Diagnostics
Problem
Spray pattern is pulsating:
Spray pattern has tails:
Spray pattern has dripping/sagging: ti15524a ti15526a
Cause
Spray Tip is clogged
Material is difficult to atomize
Sprayer is too far from target surface
Incorrect Spray Tip for application of material
Speed Control is set too low
Incorrect Spray Tip for application of material
Material not compatible with sprayer
Spray Tip is worn or damaged
Operator is moving too slowly while spraying
Sprayer is too close to target surface
Speed Control is set too high
Spray Tip is worn or damaged
Solution
Slow speed of movement.
See Clear Tip Clogs , page 19.
On models with Speed Control, increase speed until desired
Hold sprayer farther away from
Install a different size Spray Tip.
See Reversible Spray Tips , page 18.
On models with Speed Control, increase speed until desired
Install a different size Spray Tip.
See Reversible Spray Tips , page 18.
manufacturer's recommendations.
Change to different material.
Replace Spray Tip.
Move sprayer faster when spraying.
Move sprayer away from surface. See Spraying , page
directions. See Spraying , page
On models with Speed Control, decrease speed until desired
Replace Spray Tip.
28 3A9014B
Troubleshooting
Problem
Spray pattern “spits” at the end or beginning:
Cause
Excess material has accumulated on Spray Tip
Spray Tip is partially plugged
Spray Tip is not fully
Guard
Spray Tip is worn or damaged
Solution
Clean Spray Tip and Spray Tip
See Spray Tip Installation , page 18.
Replace Spray Tip.
Replace pump.
3A9014B 29
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