Index revision : C - March 2016
24
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8. Operation
8.1. Paint Recommendations
In general, all paints and clear coats used with conventional pneumatic spray guns (including slightly
metallic paints) can be used in the normal way with the NANOGUN-MV spray gun.
8.1.1. Viscosity
The best results are obtained with a viscosity ranging from 25 to 30 seconds, measured with AFNOR
cup 4. However, paints with a lower or higher viscosity (for example 14 to 50 seconds or more) can be
sprayed.
8.1.2. Resistivity
Use a paint whose resistivity is suitable for the NANOGUN-MV spray gun model that you are using.
Optimum resistivity ranges from 0.5 to 500 M
Ω
.cm. Low resistivity promotes a good wraparound effect,
but there may be back spray onto the operator is the booth is inadequately ventilated, especially when
using the round spray.
Much lower resistivity (for example 0.1 M
Ω
.cm) will short circuit the high voltage and therefore prevent
any wraparound effect. High resistivity (e.g. 1000 M
Ω
.cm) will significantly reduce the wraparound effect
will be greatly reduced. Paint resistivity can be easily checked using the SAMES AP 1000
resistivohmmeter.
8.1.3. Flash point
Use paints whose flash point at least 15 °C higher than the ambient temperature.
