Imperfect
Signs |
Possible
Reasons |
Solutions |
| 1. Fluidity of powder in the tube is not good.
|
1. The air pressure is insufficient. 2. The
perforated plate is blocked. 3. The powder gets damping,
agglomerates or is too heavy. |
1. Repair air compressor and circuitry to
enhance air pressure. 2. Check whether the perforated plate
is blocked by unclean air. 3. Check whether the bottom of
fluid bed is blocked by plastic plate or other foreign matters.
4. Loosen powder and fluidize it with dry and clean air.
|
| 2. Powder in the tube begins to delaminate according
to thickness. |
1. The powder amount is too much. 2. The powder
is too thin. |
1. Remove part of powder until the place
at 2/3 of powder tube under fluidizing state. 2. Reduce
the amount of reclaimed powder. 3. Check the granularity
of new powder. |
| 3. Reclaimed powder is polluted. |
1. Mesh screen of reclaimed powder breaks.
2. Powder or dust dropped off from conveyer belt or rack.
3. Workpiece brought in spray booth has been polluted. 4.
Pollution from surrounding air. |
1. Repair or replace mesh screen. 2. Termly
clean conveyer belt and spray paint booth. 3. Check cleaning
workpiece. 4. Insulate spray booth district and the room
with air filtration in which the temperature is adjustable
is the best. |
| 4. Powder in the spray booth dusts off. |
1. There's fault with reclaimer. 2. Extreme-trace
filter screen is blocked. 3. The air quantity is too large
that the powder supply is too rapid. 4. The spray booth
is too large. |
1. Clean or replace equipment parts. 2. Reduce
the number of spray gun or the powder quantity entering every
gun. 3. Insulate the spray booth and decrease air flow. |
