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4 WORKING CONDITIONS
4.1 Conveyed gas and operating environment
ROBOX SCREW is suitable to convey only Air or Nitrogen in a non classified zone with non corrosive and no explosive atmosphere
NOTE: The suction of liquids damages ROBOX SCREW
4.2 Performance limits
ROBOX RSW
RPM
P1
[mbarA]
P2/P1
(Versioni
/P e /C)
P2-P1
[mbar]
T1
[°C]
T2-T1
[°C]
T2
[°C]
MAX
MIN(1)
MAX
MIN
MAX
MAX
MIN
MAX
MAX
MAX
2
45
7000
1500
Po+100
Po-100
Po-700
(2)
3,5
2500 (/C e /P)
800
(/V)
-25
50
200
250
65
4400
1200
3
65
5600
1200
85
4500
1000
4
105
3600
800
125
2300
650
5
125
2800
650
145
2200
500
To Atmospheric temperature -20°C < To < +45°C Installation altitude < 1000 masl if not differently specified on page 3
Po Atmospheric pressure
P1 Blower inlet absolute pressure
T1 Blower inlet temperature
P2 Blower outlet absolute pressure
T2 Blower outlet temperature
(1) Resonance phenomena in plant are possible when rotational speed is close to the minimum one
(2) Po-800 mbar for max 10 minutes
4.3 Flow adjustment
Change the frequency supply of the electric motor, respect the speed limits indicated in the table above
Discharge excess flow and silence it
WARNING : Do not use relief valve to discharge the excess flow
WARNING : Do not recirculate the excess flow to inlet.
WARNING : ROBOX SCREW is a positive displacement compressor then throttling the inlet or the outlet pipe
can cause the operation of the compressor out of the operating limits indicated in the paragraph 4.2..
4.4 Noise level
Noise level radiated from the surface of ROBOX SCREW is indicated in the table at page 3
NOTE: The value indicated in the table is referred to the ROBOX SCREW unit only measured in a free field,
the value measured in the installation site can be different by the noise radiated by the piping and by the
reverberation characteristic of the ambient.
WARNING : For high compression ratio and for high speed of rotation noise level of ROBOX SCREW WL
(without noise enclosure) can be higher than 85 dB(A).
Summary of Contents for ROBOX SCREW Series
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