Ransburg MMA-303 Direct_Ind Charge Atomizer A12870 - Manual (Page 69)

MMA-303 Direct/Indirect Charge - Maintenance
LN-9269-11.3 66
•
Remove protective cover from out housing
and discard. Clean any paint on outer sur-
face of front and rear housing with soft
cloth dampened with solvent. (See
“Warning” on avoiding the use of cleaning
solvent containing d-Limonene).
•
Remove the front shroud and check for any
signs of solvent or paint leakage. Clean as
required.
•
Remove bell cup and soak in solvent for 1-
2 hours. Clean with a soft brush as re-
quired. Remove from cleaning solution and
blow dry before replacing.
•
Visually inspect for signs of fluid leaks
around fluid connections and manifold.
Correct problem and clean paint from all
components, including internal portion of
shroud.
•
It may be necessary to remove the bell
cups for cleaning more frequently then
weekly. (See Note under “Daily Mainte-
nance” in the “Maintenance” section.)
•
With bearing air off, carefully inspect the
feed tube tip and clean any paint build-up
that has occurred on the feed tube tip. Us-
ing a pen light, determine if there is build-
up of paint in the motor shaft and/or around
the paint feed tube. If so, remove the mo-
tor assembly following the disassembly
procedures and clean out the inside diame-
ter of the motor shaft using a tube brush
and solvent. Clean the outer surfaces of
the feed tube.
•
Reinstall bell cup and front shroud, replace
cover on the outer housing. (Refer to
“Disassembly Procedures” in the
“Maintenance” section for definite instruc-
tions.)
!
C A U T I O N
•
Maximum flow rate should not exceed 700
cc/min.
•
Make sure that no solvent or other con-
tamination is allowed to enter the motor
assembly (air bearing and outer shaft).
BELL CUP PREVENTIVE MAINTE-
NANCE
It is the user’s responsibility to ensure proper
maintenance of the atomizer bell at all times.
Bell cup failure due to inadequate cleaning or
handling will not be covered under the Warran-
ty. The “DO NOT” bullets (see “Operator/
Maintenance Warnings” in the “Maintenance”
section) listed are some examples of improper
handling which could adversely affect perfor-
mance or personnel safety and should not be
attempted for any reason.
Bell Cup Handling
Always verify that high voltage is turned off
and the atomizer bell has stopped spinning
before performing any type of handling mainte-
nance.
BELL CUP CLEANING - DIRECT
CHARGE
Always verify that high voltage is in degrade
mode of 40-50 kV and that the atomizer bell is
spinning before performing any type of color
change or bell flush cleaning cycle.
To reduce the risk of fire or explosion, the sol-
vents used for exterior cleaning must have
flash points above 100°F (37.8°C). Since
electrostatic equipment is involved, these sol-
vents should also be non-polar.
Solvents used for equipment flushing should
have flash points equal to or higher than
those of the coating material being sprayed.