Ransburg RMA-560 Single_Dual Purge Direct A13364 - Manual (Page 47)

External Atomizer Surface Cleaning
•
Verify that the high voltage is turned off.
• All external surfaces may be cleaned using
a mild solvent and lint free rags to hand
wipe the RMA-560. Turbine drive air must
be off, but leave bearing air on. The in-
ner and outer shaping air (if applicable)
should have approximately 70 slpm air flow
through each to prevent the solvent from
entering these passages.
• Do not spray the RMA-560 unit with a
solvent applicator used for cleaning. The
cleaning fluid under pressure may aid con-
ductive materials to work into hard to clean
areas or may allow fluids to be forced into
the turbine assembly.
• Do not reuse an atomizer bell cup that
shows any sign of damage such as nicks,
heavy scratches, dents, or excessive wear.
C A U T I O N !
W A R N I N G
!
W A R N I N G
!
Bell Cup Cleaning (Cup Wash) Without Clean-
ing the Incoming Paint Line
Turn off the high voltage and trigger valve. With
the bell spinning at 30,000 rpm, turn on the ex-
ternal solvent valve to allow cleaning solvent to
flow through the manifold passages, through the
fluid tube, and onto the bell. The spinning bell will
atomize the solvent, clean out the bell passages
both internally and externally. It is always required
to blow the solvent line dry after the cleaning op-
eration. Typical bell speed during the cup flush
sequence is 30,000 rpm. Follow sequence as
outlined for cup wash in “General Operating Se-
quence” in the “Operation” section.
† The maximum flow rate of 800 cc/min.
must not be exceeded during a flush rou-
tine. Use of an in-line fluid restrictor is rec-
ommended.
† NEVER wrap the applicator in plastic to
keep it clean. A surface charge may build up
on the plastic surface and discharge to the
nearest grounded object. Efficiency of the
applicator will also be reduced and damage
or failure of the applicator components may
occur. WRAPPING THE APPLICATOR IN
PLASTIC WILL VOID WARRANTY.
† To reduce the risk of fire or explosion,
OSHA and NFPA-33 require that solvents
used for exterior cleaning, including bell
cleaning and soaking, be nonflammable (flash
points higher than 100°F/ 37.8° C). Since
electrostatic equipment is involved, these
solvents should also be non-polar. Exam-
ples of non-flammable, non-polar solvents for
cleaning are: Amyl acetate, methyl amyl ac-
etate, high flash naphtha, and mineral spirits.
† Do not use conductive solvents such as
MEK to clean the external surfaces of the
RMA-560 without a second cleaning with a
non-polar solvent.
† When using a rag to hand wipe the RMA-
560, the turbine air should be off, but leave
both the shaping air and bearing air turned
on. Ensure that rotation has come to a com-
plete stop.
• For best operating conditions, the atomizer
surfaces must be dry.
• Always final wipe all parts with a non-polar sol-
vent and wipe dry (high flash Naphtha, etc.).
RMA-560 Single/Dual Purge Direct Charge - Maintenance
Ransburg
LN-9278-13 44