Revised A
8
6301
Foreword
This paragraph contains information that an operator should know and understand before using the
PPH 607. The purpose of this information is to indicate precautions that must be taken to prevent
potentially serious damage to the atomizer.
Bearing air filtration
The air has to be suitably filtered to ensure a long lifetime and to prevent any contamination during paint
application. Incorrectly filtered air can contaminate the bearing causing damage to the turbine. In
particular, a filtering system has to be installed to stop particles bigger than 5 micron.
Filter cartridges have to be regularly changed to ensure clean air. The filter has to be installed as near
as possible to the atomizer.
CAUTION : The warranty does not cover damage caused by air improperly cleaned and filtered
according to specifications.
The inside of the air hoses supplying the atomizer should be free of any paint or solvent contamination.
CAUTION : The warranty does not cover any damage caused by impurities (paint, solvent or any
other foreign matter) introduced in the pneumatic circuits of the PPH 607.
Bearing air
The bearing air must always be «on» during operation otherwise serious damage to the turbine will
occur. Once the turbine has coasted to a complete stop, it is safe to turn off the bearing air.
To turn off the bearing air
:
• Turn off turbine drive air
• Wait until turbine stops (150 sec. minimum)
• Turn off bearing air
Bearing air pressure below 90 psi (6 bars) (at the atomizer inlet) can damage the bearing. The
minimum dynamic air pressure is 90 psi (6 bars) (at the pneumatic control panel).
Minimum dynamic air pressure must be measured at the atomizer inlet. If the bearing pressure
falls below 90 psi (6 bars) at the turbine inlet or at the atomizer inlet, stop turbine drive air.
CAUTION : The warranty does not cover damages to the turbine resulting from insufficient
bearing air pressure.
