Ransburg RMA Dual Purge Direct A12300 - Manual (Page 53)

RMA-303 Dual Purge/Direct Charge - Operation
48
Figure 17: Typical Color Change Sequence
Ransburg
LN-9263-08.5
5. Voltage Off/Setback Voltage - Immediately
preceeds the trigger off. Using a setback volt-
age shortens the cascade voltage ramp up-time.
Recommended setback voltage is between 30kV
and 50kV.
6. Fluid Trigger Off - This should occur when the
target is typically 0-6-inches (0-152.4mm) past
the applicator centerline.
7. Shaping Air to Setback - The setback flow
of air should never be below 70 slpm (2.6 SCFM).
PAINT TRIGGER ON SIDE #2 AND START SPRAYING
INTERNAL/EXTERNAL CUP WASH SEQUENCE- HV OFF
INTERNAL/EXTERNAL CUP WASH SEQUENCE- HV OFF
AIR IN TO CLEAR & DRY DUMP LINE
DUMP VALVE OPEN, LOAD PAINT TO VALVE BODY SIDE #2, DUMP VALVE OFF
PUSH PAINT THOUGH FLUOD COIL FROM SIDE #1, STOP SPRAYING
INTERNAL SOLVENT VALVE ON TO CLEAN COIL AND FLUID TUBE- HV OFF
DUMP TRIGGER ACTUATED SIDE #1
SOLVENT/ AIR CHOP FROM EXTERNAL SOURCE
AIR ON TO CLEAR & DRY DUMP LINE
DUMP VALVE OPEN, LOAD PAINT TO VALVE BODY SIDE #1, DUMP VALVE OFF
PUSH PAINT THROUGH FLUID COIL FROM SIDE #2, STOP SPRAYING
INTERNAL SOVENT VALVE ON TO CLEAN COIL, FLUID TUBE, BELL CUP- HV OFF
PAINT TRIGGER ON SIDE #1 AND START SPRAYING
DUMP VALVE ACTUATED SIDE #2
SOLVENT/AIR CHOP FROM EXTERNAL SOURCE
TY
PIC
AL
P
U
RG
E S
EQ
U
EN
CE
EV
EN
T
8. Color Change Sequence - Used when
color is changed one to the other. Typical color
change sequence is shown in Figure 16. (Note:
During this sequence, the applicator should
be moved to a position to collect the waste
material.) The sequence shown is a starting
point for processing, but the final sequence will
depend on the material being sprayed and the
solvent used to purge the applicator with.