VIAIR 28021 - Page 6

USER MANUAL
280C Air Compressor Kit
COMPRESSOR APPLICATION GUIDE
Toensurethatyougetthehighestlevelofsatisfactionfromyourcompressorperformance,referto
information below:
VIAIR COMPRESSOR REFERENCE CHART
COMPRESSORSERIES DUTYCYCLE WORKINGPRESSURE
100SERIES  15%  130PSI
215SERIES  17%  150PSI
225SERIES  20%  150PSI
265SERIES  22%  150PSI
275SERIES  25%  150PSI
300SERIES  30%  150PSI
400SERIES  33%  150PSI
450SERIES  100%  150PSI
500SERIES  33%  150PSI
550SERIES  100%  150PSI
ABOUT COMPRESSOR DUTY CYCLE:
CompressorDutyCyclereferstoamountoftimeacompressorcanbeoperatedinagiventime
period,at100PSI&atastandardambienttemperatureof72°F.
DutyCycleiscommonlyexpressedas:
CompressorOnTime/(CompressorOnTime+OffTime)
Asanexample,acompressorthatisratedfor20%dutycyclemeansthatcompressorcanbe
operatedat100PSI@72°Ffor8Minutesandrestedfor32Minutes.
8min.on/(8min.on+32min.off)=20%DutyCycle
DUTY CYCLE REFERENCE CHART
DUTYCYCLE@100PSI/72°F MINUTESON/OFF
15%    6Min.On/34Min.Off
17%    7Min.On/30Min.Off
20%    8Min.On/32Min.Off
22%    9Min.On/30Min.Off
25%    10Min.On/30Min.Off
30%    13Min.On/30Min.Off
33%    15Min.On/30Min.Off
100%    ContinuousDuty
ABOUT RATED WORKING PRESSURE:
Toensuretroublefreeservicelifeofyourcompressor,alwaysoperatecompressorwithinrated
workingpressureofthecompressor.Neveruseapressureswitchwithahighercut-offpressure
thancompressor’sratedworkingpressure.