Ransburg RMA-560 Single_Dual Purge Direct A13364 - Manual (Page 46)

O-RINGS
All O-rings in this atomizer are solvent proof
except those on the air bearing spindle. These
O-rings must not be soaked in solvent; if these
are exposed or soaked in solvent, they must
be replaced. These O-rings are engineered to
provide a fit between the air bearing spindle and
it’s mating parts to reduce or eliminate harmonic
resonance (vibration).
Some O-rings are encapsulated. These O-rings
have a limited amount of stretch and will not return
to their original diameters if over stretched. These
O-rings are subject to being distorted more easily
than rubber O-rings, so it is important that they
be sufficiently lubricated when mating parts are
installed onto them. They also will take a square
set over time and should be replaced periodically
if mating parts are removed repeatedly or if a new
mating part is installed onto them.
Any O-ring that is cracked, nicked, or distorted
must be replaced.
A suitable lubricant is food grade petroleum jelly
or A11545-00 Petrolatum Jell.
CLEANING PROCEDURES
In addition to the previous Warning, which relates
to potential safety hazards, the following informa-
tion must be observed to prevent damage to the
equipment.
Internal Fluid Path Purge Cleaning
Cleaning the incoming paint line (from paint supply
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, open
the dump valve and flush the incoming paint line
with solvent or an air/solvent chop. Make sure the
last step of the sequence is air to purge the dump
line of remaining solvent. To speed the loading of
the new paint, leave the dump line open to allow
the air in front of the paint push to escape. The
length of time the dump valve is open depends
on several factors such as viscosity, paint pres-
sure, etc. Timing should be such that the dump
is closed as the paint reaches the trigger valve in
the atomizer. Paint in the dump line may cause
high voltage issues.
The fluid coil and fluid tube can be cleaned in-
dependently by actuating the solvent valve in
the atomizer. High voltage must be turned off
during this operation and the bell cup must be
spinning (typically 30,000 rpm for cup flushing
sequences).
C A U T I O N !
W A R N I N G
!
† Electrical shock and fire hazards can exist
during maintenance. MicroPak supply must
be turned off before entering the spray area
and performing any maintenance procedures
on the atomizer. Spray booth fans should
remain on while cleaning with solvents.
† Never touch the atomizer bell while it is
spinning. The front edge of the bell can easily
cut into human skin or cut through gloves and
other materials. Be sure the atomizer bell has
stopped spinning before attempting to touch it.
Approximate time for the bell to stop spinning
after turning off turbine drive air is three minutes.
† Ensure high voltage is off during any man-
ual cleaning procedure.
† DO NOT immerse the RMA-560 turbine in
solvent or other liquids. Turbine components
will be damaged and warranty will be voided.
† Bearing air must be on during all cleaning
procedures to protect the air bearing components.
MAINTENANCE
W A R N I N G
!
† Ensure that all energy sources are dis-
appated, (electrical, air, paint, solvent, etc.)
before removing the applicator or performing
any maintenance.
RMA-560 Single/Dual Purge Direct Charge - Maintenance
Ransburg
LN-9278-13 43