| |
CAUSE
|
REMEDY |
| A |
Sagging is caused by either over reduction or by
use of a solvent that evaporates too slowly. |
Use the proper solvent consistent with the
general nature and temperature of the surface to be coated. |
| B |
Heavy application of a coating. |
Control amount of material applied to surface. |
| C |
Draft condition. |
Eliminate draft. |
| D |
Strong sunlight causing top drying and
consequently, late slippage of film on vertical surfaces. |
Avoid application in strong sunlight. |
| E |
Jerky operation of mechanical equipment from
withdrawal from dip tank. |
Repair or redesign equipment. |
| F |
Cold weather. |
Use faster evaporating reducing thinner (caution,
may cause blush) or bring room temperature up to 70"F. |
| G |
Dirty air cap and fluid tip. |
Remove cap and fluid tip then clean. |
| H |
Gun manipulated too close to surface. |
Hold the gun 6 to 10 inches from surface. |
| I |
Failure to release trigger at end of stroke (when
stroke does not go beyond object). |
Release trigger after every stroke. |
| J |
Gun manipulated at wrong angle to surface. |
Work gun at right angles to surface. |
| K |
Fluid pressure too high. |
Reduce fluid pressure. |
| L |
Operation too slow. |
Speed up movement of gun across surface. |
| M |
Improper atomization. |
Use larger air cap (internal mix); increase
volume of air through horns (external mix) |
