Ransburg MMA-303 Direct_Ind Charge Atomizer A12870 - Manual (Page 68)

MMA-303 Direct/Indirect Charge - Maintenance
65 LN-9269-11.3
7. Inspect bell cup for nicks, dents, heavy
scratches, or excessive wear. Replace if
necessary.
8. Check bell cup tightness. Tighten to 50-
70 lbs•in (5.65-7.91 Nm) torque.
9. Check the amount of paint build-up on the
outer protective cloth covers, if used. If
excessive, replace covers as required. If
cloths are wet, find source and replace
with dry cloth covers.
PREVENTIVE MAINTENANCE (Continued)
!
W A R N I N G
•
The high voltage must be turned OFF be-
fore entering the spray area and perform-
ing any maintenance procedures. Spray
booth exhaust fan(s) should remain ON
while cleaning the equipment with sol-
vents.
•
Make sure high voltage is OFF before ap-
proaching applicator with solvent cloth.
•
DO NOT use reclaim solvent containing d-
Limonene. This can cause damage to cer-
tain plastic components.
•
DO NOT stop bell rotation by using a rag
or gloved hand against the bell cup edge.
!
C A U T I O N
•
Maximum flow rate should not exceed 700
cc/min.
•
Daily removal and soaking of the bell cup
may not be required if the bell cup is properly
flushed. However, the frequency of the feed
tube and internal motor shaft inspection indi-
cated below under weekly maintenance can
be done daily and later adjusted to weekly or
as required depending on the results of the
inspection.
! W A R N I N G
•
In the event the bell cup comes in contact
with a part, that cup should be replaced
before continuing to spray.
•
Do Not place high voltage test probe on
bell edge unless rotation is fully stopped.
N O T E
Normally the cloth covers will not need re-
placement daily and could last about one
week depending on application. (See “Weekly
Maintenance” in the “Maintenance” section.
Refer to the “Troubleshooting Guide” in the
“Maintenance” section for details on determin-
ing the causes of low or no high voltage at the
bell cup.
Weekly Maintenance (Prior to Start or End
of Production Week)
•
Monitor rotational speed of all belts at the
speed control. Investigate cause if abnor-
mal.
•
Monitor high voltage and current output
indicated on the MicroPak display. Investi-
gate cause if abnormal.
•
Check paint flow on all bells at minimum
and maximum specified settings by taking
beakered readings.
•
Check solvent flow by opening solvent
valve and taking a beakered reading
(should be within approx. 10% of target
flow rate).
•
Paint residue found in the shaping air
holes is not acceptable and must be re-
moved prior to applicator use (see
“Cleaning Shaping Air Holes” in the
“Maintenance” section).