Ransburg Aerobell 33 AER5000, AER5001 - Manual (Page 17)

Aerbell 33 Rotary Atomizer - Installation
Ransburg
13 LN-9521-00.4
INTERLOCKS
The following system interlocks are required to
prevent equipment damage:
1. Bearing air should remain on at all times and
should be shut off only by turning off the main air
to the pneumatic control cabinet.
† When the turbine air is turned off, the tur-
bine will continue to operate or “coast down”
for about two minutes. Provisions should
be made to assure that the operator waits
at least three minutes, after shutting off the
turbine air, before shutting off the main air
supply.
† The bell assembly must be removed
when making flow checks. If the paint is
turned on when the bell is mounted on the
motor shaft and not rotating, paint will enter
the shaft and possibly damage the air bear-
ing. Normally pneumatic interlocks will not
allow the paint to trigger on when the turbine
air is off.
C A U T I O N
!
W A R N I N G
† The high voltage and/or coating material
must never be turned on unless the bell cup
is mounted on the motor shaft and the tur-
bine is rotating.
† Pneumatic input to the turbine air inlet
must be controlled to prevent the turbine
from exceeding the maximum rated intermit-
tent speed of 55,000 rpm. (See "Specifica-
tions" in the "Introduction" section.)
!
2. It should not be possible for the coating material
to be sprayed unless the turbine is
spinning.
3. Two interconnected bearing air ports are pro-
vided, one for supply air and the other to be
used as a return signal for measuring bearing air
pressure at the atomizer. If bearing air falls below
60 psi at the atomizer, the turbine air should be
automatically interlocked to shut off.
4. High voltage must be interlocked with the
solvent valve pilot signal to prevent solvent flow
while high voltage is energized.
5. Turbine air and brake air must be interlocked
to prevent both from being used simultaneously.