VIAIR 485C, User Manual, Page: 6 / 8

USER MANUAL
485C COMPRESSOR KIT
COMPRESSOR APPLICATION GUIDE
To ensure that you get the highest level of satisfaction from your compressor’s 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
425 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
485 SERIES 100% 200 PSI
*100%
*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.