Ransburg RMA Indirect A12869 - Manual (Page 52)

RMA-303 Indirect Charge - Maintenance
47 LN-9268-11.4
MAINTENANCE
!
W A R N I N G
!
W A R N I N G
O-RINGS
All O-rings in this atomizer are solvent proof
except the ones 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 engi-
neered to provide a fit between the air bearing
spindle and it's mating parts to reduce or elimi-
nate 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
> Electrical shock and fire hazards can exist
during maintenance. Micro-Pak supply must
be turned off before entering the spray area
and performing any maintenance procedures
on the atomizer. Spray booth fans should re-
main on while cleaning with solvents.
> Never touch the atomizer bell while it is spin-
ning. The front edge of the bell can easily cut
into human skin or cut through gloves and oth-
er 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.
> Insure high voltage is off during any manual
cleaning procedure.
In addition to the above Warning, which relates to
potential safety hazards, the following information
must be observed to prevent damage to the equip-
ment.
> DO NOT immerse the RMA-303 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 compo-
nents
.
> For best operating performance, all surfaces
of the applicator must be dry.
Internal Fluid Path Purge Clean-
ing
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, 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 con-
tained system flush.