Compact TRANS-TECH Operation Manual Download

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Page 7

SB-2-540

*Most common problem.

Left or right side horn holes plugged.
Dirt on left or right side of fluid tip.

Remedies for the top-heavy, bottom-heavy, right-heavy, and left-heavy patterns:

1. Determine if the obstruction is on the air cap or the fluid tip. Do this by making a test

spray pattern. Then, rotate the cap one-half turn and spray another pattern. If the defect
is inverted, obstruction is on the air cap. Clean the air cap as previously instructed.

2. If the defect is not inverted, it is on the fluid tip. Check for a fine burr on the edge of the

fluid tip. Remove with #600 wet or dry sand paper.

3. Check for dried paint just inside the opening; remove by washing with solvent.

Fluid flow too high for atomization air.

Material flow exceeds air cap's capacity.
Spreader adjustment valve set too low.
Atomizing pressure too low.
Material too thick.

Atomization air pressure too high.
Fluid flow too low.
Spreader adjusting valve set too high.

*Loose or damaged fluid tip/seat.
Baffle seal installed incorrectly.
Material level too low.
Container tipped too far.
Obstruction in fluid passage.
Dry or loose fluid needle packing nut.

Spreader adjustment screw not seating
properly.
Air cap retaining ring loose.

No air pressure at gun.

Fluid needle adjusting screw not open
enough.
Fluid too heavy for gravity feed.

Fluid tip not tight.

Cup lid loose.
Dirty threads on cup or lid.
Cracked cup or lid.

Inadequate material flow.

Low atomization air pressure.

Too much atomization air pressure.
Gun too far from work surface.
Improper stroking (arcing, gun motion too
fast).

Too much or too fast-drying thinner.
Too much atomization air pressure.

Air pressure too high.
Gun tip too far from work surface.
Gun motion too fast.
Gun out of adjustment.

Packing nut loose.
Packing worn or dry.

Packing nut too tight.
Dry packing.
Fluid tip or needle worn or damaged.
Foreign matter in tip.
Fluid needle spring broken.
Wrong size needle or tip.

Clean. Ream with non-metallic point.
Clean.

Clean.

Clean. Ream with non-metallic point.
Clean.

Horn holes plugged.
Obstruction on top or bottom of fluid tip.
Cap and/or tip seat dirty.

TROUBLESHOOTING

CONDITION

CAUSE

CORRECTION

Heavy top or
bottom pattern

Heavy right or left
side pattern

Heavy center pattern

Split spray pattern

Jerky or fluttering spray

Unable to get round spray

Will not spray

Paint bubbles in cup

Fluid leaking or dripping from
cup lid

Starved spray pattern

Excessive overspray

Excessive fog

Dry spray

Fluid leaking from packing nut

Fluid leaking or dripping from
front of gun

Balance air pressure and fluid flow. Increase
spray pattern width with spreader adjustment
valve.
Thin or lower fluid flow.
Adjust.
Increase pressure.
Thin to proper consistency.

Reduce at transformer or gun.
Increase fluid flow (increases gun handling
speed).
Adjust.

Tighten or replace.
Install per directions.
Refill.
Hold more upright.
Backflush with solvent.
Lubricate or tighten.

Clean or replace.

Tighten.

Check air supply and air lines, blow out gun
air passages.
Open fluid needle adjusting screw.

Thin material and/or change to larger tip size.

Tighten tip to 12-15 ft-lbs.

Push in or tighten lid.
Clean.
Replace cup and lid.

Back fluid adjusting screw out to first thread,
or change to larger tip size.
Increase air pressure and rebalance gun.

Reduce pressure.
Adjust to proper distance.
Move at moderate pace, parallel to work
surface.

Remix properly.
Reduce pressure.

Reduce air pressure.
Adjust to proper distance.
Slow down.
Adjust.