USER MANUAL
ULTRA-LIGHT DUTY ONBOARD AIR SYSTEM
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
MAX. WORKING PRESSURE
(100 PSI @ 72°F)
090 SERIES
9%
120 PSI
092 SERIES
9%
120 PSI
095 SERIES
9%
120 PSI
097 SERIES
10%
130 PSI
098 SERIES
10%
130 PSI
100 SERIES
15%
130 PSI
250 IG SERIES
100%
150 PSI
275 SERIES
25%
150 PSI
280 SERIES
30%
150 PSI
325 SERIES
33%
150 PSI
330 IG SERIES
100%
150 PSI
350 SERIES
100%
150 PSI
380 SERIES
100%
200 PSI
*55%
400 SERIES
33%
150 PSI
420 SERIES
33%
150 PSI
444 SERIES
100%
200 PSI
*50%
450 SERIES
100%
150 PSI
450 IG SERIES
100%
150 PSI
460 SERIES
100%
150 PSI
480 SERIES
100%
200 PSI
*50%
*Duty Cycle at 200 PSI and 72°F.
ABOUT COMPRESSOR DUTY CYCLE:
Duty cycle refers to the amount of time a compressor can be operated in a given time period at 100 PSI, and a
standard ambient temperature of 72° F. It is commonly expressed in percentage format: Compressor on time ÷
(on time + off time) = Duty Cycle %.
ONE-HOUR DUTY CYCLE
MINUTES ON /
(100 PSI @ 72°F)
MINUTES
OFF
9%
5 Min. On / 55 Min. Off
10%
6 Min. On / 54 Min. Off
15%
9 Min. On / 51 Min. Off
20%
12 Min. On / 48 Min. Off
25%
15 Min. On / 45 Min. Off
30%
18 Min. On / 42 Min. Off
33%
20 Min. On / 40 Min. Off
50%
30 Min. On / 30 Min. Off
100% 1 Hour Run Time
NOTE: All compressors, regardless of rated duty cycle, require sufficient rest time in between cycles to allow
for partial or complete heat dissipation. Heat dissipation rates may vary depending on ambient temperatures
and operating conditions.
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.
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