Ransburg MMA-570 Direct_Ind Charge Atomizer A13366 - Manual (Page 47)

C A U T I O N !
Normally, for painting application, the process
sequence should always be:
• Bearing air on (always On)
• Turbine air on
• Turbine speed to application speed
• Shaping air on
• Start fluid flow off part
• Voltage on
After spraying the object, the sequence should be:
• Voltage lowered to 30-50 kV
• Fluid off
• Shaping air to setback volume
• Turbine speed to set back speed (30,000
rpm recommended)
Recommended sample cup flush sequence is as
follows (voltage must be off) (internal and external
cup wash):
1. Turbine speed set to 25,000-30,000 rpm.
2. Set to 350-450 slpm (12.4-15.9 SCFM).
3. Point atomizer at a grounded object such
as a booth grate.
4. Maintain solvent pressure of 100-150 psi
(689-1,034 kPa). Maintain air push pres-
sure at 80-100 psi (552-689 kPa).
5. Use an alternating trigger sequence of sol-
vent/air to create a chopping effect. Always
ensure that the last step in the sequence is
an air push.
A typical sequence is .2 seconds solvent, 1.0 sec-
ond air push, 1.7 seconds solvent and 2.0 seconds
final air push. This sequence may be modified for
other paints and applications.
6. It is recommended that an in-line fluid filter
be installed to ensure that no foreign debris
enters the fluid tip or the external wash
nozzle.
The MMA-570 is versatile in processing the fin-
ish of a component. It can be setup as shown in
“Typical Paint Sequence” figure.
Recommended sample cup purge sequence is as
follows (voltage must be off) (internal cup cleaning):
1. Turbine speed set to 25,000-30,000 rpm.
2. Increase shaping air to 350-450 slpm
(12.4-15.9 SCFM).
3. Paint atomizer at booth grate or insert into
bell cleaning station.
4. Maintain solvent pressure of 100-150 (689-
1,034 kPa). Maintain air push pressure at
80-100 psi (552-689 kPa).
5. Use an alternating trigger sequence of sol-
vent/air to create a chopping effect. Always
ensure that the last step in the sequence is
an air push.
6. A typical sequence is .3 seconds solvent,
1.7 seconds air push, repeat 3 times. This
sequence may be modified for other paint
and applications.
† It is recommended to leave bearing air
on, unless the applicator is being serviced or
removed for service.
GENERAL OPERTING SEQUENCE
- DIRECT / INDIRECT CHARGE
MMA-570 Direct/Indirect Charge - Operation
Ransburg
LN-9279-13 44