Ransburg RMA202 Test Stand 77918-08 - Manual (Page 17)

Bearing Air Test
This test is to verify the applicator responds to
changes in set points in the speed selector. The
procedure to accomplish this is:
1. Push up the bell spin guard against the face of
the bell. Adjust the air regulator for bearing air
to 80 psig minimum. (See Figure 16) The bear-
ing air flow meter should read between 1.5
SCFM to 2.5 SCFM airflow. If it is below or
above this limit, consult the applicator
manual for solutions.
3. Set the atomizer speed select to 50,000 rpm.
Turn on the #1 speed enable toggle switch.
Press the speed enter button. The turbine
should now begin spinning. This should be au-
dible. At 50K rpm the air flow should be not
exceed 14 SCFM. The reading is taken from
the Atomizing air flow meter.
4. Adjust the speed select to 45,000 rpm. Press
the speed enter button to enter the new speed.
An audible difference in speed should be de-
tected.
5. Re-adjust the speed to 50,000 rpm. Read the
fiber optic transmiter voltage from the panel. It
should read a minimum of 0.68V at 50,000 rpm.
Figure 16: Bearing Air Pressure Gauge & Adjustment
Regulator
Figure 17: Fiber Optic Transceiver Voltage Readout
6. If the voltage is out of range, there are several
possible causes. The most likely are:
a. Transmitter inside the bell is bad or is
positioned wrong. Refer to most current
RMA-202 applicator service manual for
instructions to correct.
b. Transmitter (75911) or cable (75921)
is not properly connected or may be bro-
ken.
N O T E
> If these are bad, the applicator most
likely will not rotate because the atomizer
card will shut the air to the turbine off.
7. Set the atomizer speed select to 45,000 rpm.
Press the speed enter button. Again, an au-
dible change in speed should be detected.
2. Use the manual brake button to make sure the
applicator bell is not rotating. When this is veri-
fied, check by hand that the turbine shaft as-
sembly rotates freely.
W A R N I N G
!
> During any part of the turbine tests where
the applicator bell is rotating, DO NOT come
near or in contact with the spinning bell.
Because of the bell rotational speed, injury
can easily occur. Locate the bell in a position
where minimal exposure to anyone passing
by may come in contact with the spinning bell.
> NEVER use any fluid other than distilled
or de-ionized water to test the applicator
performance. Using any other material will
cause a risk of fire or severe personal injury.
100
RMA-202 Test Stand - Installation
15
Ransburg
LN-9527-00.1