Ransburg RMA Indirect A11600 - Manual (Page 44)

Internal Fluid Path Purge Cleaning
Cleaning the incoming paint line (from paint sup-
ply source such as color manifold through the
fluid manifold and bell assembly): Turn off the
high voltage and turn on the color stack trigger
valve for solvent supply. With the bell spinning,
flush cleaning solvent through the incoming paint
line and through the manifold passages, and out
through the dump valve. Use restricted bell wash
solvent to clean the fluid tube and bell cup. The
spinning bell will atomize the solvent and clean
out the bell cup. If desired, open the dump valve
to flush through the dump line for a faster and
contained system flush.
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-303 Turbine drive air must be off,
but leave bearing air on. The inner and outer
shaping air should have approximately 70
slpm air flow through each to prevent the sol-
vent from entering these passages.
• Always final wipe all parts with a non-polar
solvent and wipe dry (high flash Naphtha,
etc.).
• Do not spray the RMA-303 unit with a sol-
vent applicator used for cleaning. The clean
ing fluid under pressure may aid conductive
materials to work into hard to clean areas or
may allow fluids to be forced into the turbine
assembly.
>
For best operating performance, all
surfaces of the applicator must be dry.
C A U T I O N !
W A R N I N G
>
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 o F/37.8 o C).
Since electrostatic equipment is involved,
these solvents should also be non-polar. Ex-
amples of non-flammable, non-polar solvents
for cleaning are: Amyl acetate, methyl amyl
acetate, high flash naphtha, and mineral
spirits.
>
Do not use conductive solvents such as
MEK to clean the external surfaces of the
RMA-303 without a second cleaning with a
non-polar solvent.
>
When using a rag to hand wipe the RMA-
303, the turbine air should be off, but leave
both the shaping air and bearing air turned
on. Insure that rotation has come to a com-
plete stop.
!
W A R N I N G
>
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.
!
>
The maximum flow rate of 700 cc/min.
must not be exceeded during a flush rou-
tine. Use of an in-line fluid restricter is
recommended. (Example: P/N RIL-6-AJ
or similar)
C A U T I O N
!
• Do not reuse an atomizer bell cup that
shows any sign of damage such as nicks,
heavy scratches, dents, or excessive wear.
• For best operating conditions, the atomizer
surfaces must be dry.
RMA-303 Indirect Charge - Maintenance
Ransburg
40 LN-9252-06.4