23
Member of Exel group
DRT7142
B - 2023/06
3.2.2. Pneumatic characteristics
To limit the pressure drop of the compressor and to maintain the minimum required pressure, it is recommended to
install a buffer tank of 1000 to 2000 liters, depending on the number of projectors, upstream of the control cabinet.
m
0
3
: Values are given for a temperature of 20 °C (68 °F) at an atmospheric pressure of 1 013 mbar
Powder Station
Max. input pressure
7.5 bar (100 psi)
Min. input pressure
6 bar (90 psi)
Ventilation required
Ventilation required
500 Nm
3
/h in operation
2000 Nm
3
/h in cleaning
Max. compressed air consumption
Venturi pump
100 NL/min in operation
160 NL/min in cleaning
Fluidization 60
NL/min
Inotransfer
pump
450 NL/min in operation
650 NL/min in cleaning
Recycling
250 NL/min in recycling
650 NL/min in cleaning
External blowing projector
330 NL/min/projector
Max. compressed air consumption for an installation of 24 projectors
Operation phase
170 Nm
3
/h
Powder internal circuit cleaning phase
400 Nm
3
/h on average for 5 to 6 minutes
Cleaning phase of projector exteriors
500 Nm
3
/h for about 30 seconds
Characteristics of compressed air supply according to the standard NF ISO 8573-1
Maximum dew point at 6 bar (87 psi)
Class 4 i.e + 3°C (37°F)
Maximum particle-size of solid pollutants
Class 3 i.e 5
μ
m
Maximum oil concentration
Class 1 i.e 0.01 mg / m
0
3
*
Maximum concentration of solid pollutants
Class 3 i.e 5 mg / m
0
3
*
