Ransburg Aerobell Copes 75850 - Manual (Page 17)

Aerobell Copes - Installation
13
2. System interlock that would allow fluid flow
only when the bell cup is spinning (turbine
drive air ON) and must be shut OFF if turbine
drive air is lost or disabled. It should not be
possible for the coating material to be sprayed
unless the turbine is spinning or in bypass
mode for checking fluid deliveries.
3. System interlock that would shut OFF the
supply of drive air to the turbine if bearing air
is lost or falls below 60psi at the applicator. If
bearing air drops below 60psi at the turbine,
the turbine drive air will automatically shut
OFF. A bearing air return connection is
provided at the applicator and is used to
supply a signal to the pneumatic interlock
located in the atomizer module or equivalent.
The ports are interconnected so either may
be used for supply or return to the air control
cabinet.
4. System interlock that would not allow the
turbine to exceed the maximum rated
intermittent speed and shut OFF turbine drive
air if fiber optic feedback is lost or disabled
when used with closed loop speed control
system. The air inlet pressure determines the
speed of the turbine and excessive speed will
cause air turbine damage.
5. If the Aerobell Copes unit is mounted with
the bell cup facing up, a device should be
provided to rotate the applicator into a
horizontal position during maintenance.
LN-9230-00.1
> Pneumatic input to the turbine air inlet
must be controlled and prevent the turbine
from exceeding the maximum rated intermit-
tent speed of 60,000rpm. (See "Specifications"
on page 6.)
W A R N I N G !
> The coating material must never be turned
ON unless the bell cup is mounted on the mo-
tor shaft and rotating at a speed high enough
to ensure dissipation of all material supplied.
W A R N I N G !
> The bell assembly must be removed when
making fluid 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 bearing. Normally
pneumatic interlocks will not allow the paint to
trigger ON when the turbine air is OFF.
C A U T I O N !
> Operating the turbine with bearing air
pressure below 60psi (measured at turbine
inlet) may cause bearing damage.
C A U T I O N !