TM55-1500-345-23
Table 3-1. Manual Spray Coating Troubles. Possible Causes. and Remedies -- (Continued)
POSSIBLE CAUSES
TROUBLE
PREVENTIVE MEASURES OR REMEDIES
1.
1
Paint will not come
Lack of proper air pressure in the pressure
Check for Ieaks or Iach of air entry.
from pressure tank
tank
This is a common trouble. Clean the opening
2.
Air intake opening inside of pressure
2.
periodically
tank lid, clogged by dried rnaterial.
Leaking gaskets on tank cover
Replace with a new gasket.
3.
3.
1.
Paint wiII not come
Dirty fluid tip and air cap.
1.
Remove all air cap and clean tip and air cap
from suction CUP
carefully
2.
2.
Remove the obstruction.
Clogged air vent on cup cover.
3.
Ascertain and use correct setup.
Using wrong air cap.
3.
4.
4.
Leaky connections on fluid tube or nozzle.
Check for leaks under water and repair.
1.
Excessive material
1.
It should be a habit to release trigger after
Not triggering the gun at each stroke.
loss
every stroke
2.
Stroking at wrong angle to surface.
2.
Gun should be stroked at right angles to sur-
face.
3.
Stroking gun 100 far from the surface.
Stroke the gun 6 to 10 inches from the sur-
3.
face.
4.
4.
Ascertain and use correct setup.
Wrong air cap or fluid tip.
5.
Depositing a film of Irregular thickness.
5.
Learn to calculate the depth of wet film of fin-
ish and develop control.
6.
Air pressure too high.
Use the least amount of air necessary.
6.
7.
Fluid pressure too high.
Reduce pressure. If pressure keeps climbing.
7.
clean regulator on pressure tank.
Heat to enable reduced air pressure. (Use
8.
Coating material too cold.
8.
authorized heat methods)
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