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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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Страница 1: ......

Страница 2: ...ns the parts needed for specific areas of installation and may contain smaller bags within each package for specific uses PARTS PACKAGES USER MANUAL ULTRA LIGHT DUTY ONBOARD AIR SYSTEM Package 1 Pressure Switch Relay A Pressure Switch 85 PSI on 105 PSI off 1pc B 40 amp relay 1pc REDUCER A O Package 2 Fittings C 1 4 NPT Drain Cock 1pc D 1 4 NPT 145 PSI Safety Valve 1pc E 1 4 NPT Compression Fitting...

Страница 3: ... with a wrench Do not over tighten if your port fittings are made from brass since brass threads can be stripped Always release air from tank before servicing WARNING FAILURE TO DRAIN TANK AND REMOVE CONDENSATION WILL CAUSE TANK TO RUST PREMATURELY To remove accumulated condensation inside the tank bleed pressure from tank until pressure is approximately 5 PSI to 20 PSI using drain cock Drain wate...

Страница 4: ...is 10 11 ft lbs 98C Compressor Wiring See Figure 3 on back of manual 1 Disconnect ground cable from vehicle s battery 2 Temporarily position the air compressor in the location where it will be mounted 3 Route ground wire to the negative post of the battery or to an appropriate grounding point and cut ground wire to length as needed 4 Mount the 98C air compressor with the two 13 64 5 mm bolts nuts ...

Страница 5: ...et port of the tank to keep moisture from being able to seep back to the tank PRESSURE SWITCH WITH RELAY INSTALLATION Your VIAIR Ultra Light Duty Onboard Air System comes complete with a pressure switch and a 40 amp relay that will turn on the compressor at 80 PSI and off at 105 PSI The pressure switch has a 1 8 NPT inlet at the bottom that will need to be installed into the 1 8 NPT port of the T ...

Страница 6: ...Y CYCLE Duty cycle refers to the amount of time a compressor can beoperated 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 ...

Страница 7: ...lt tank to drain Drain tank more frequently 2 Move compressor to area with less humidity or use air line filter Compressor will not run 1 No power or power switch in OFF position 2 Blown fuse 3 Motor overheats 4 Faulty pressure switch 1 Make sure compressor switch is ON 2 Disconnect compressors from power source replace fuse Refer to Specifications section for correct fuse amperage 3 Let compresso...

Страница 8: ... of the Manual shall be used reproduced translated converted adapted stored in a retrieval system communicated or transmitted by any means for any commercial purpose including without limitation sale resale license rental or lease without the prior express written consent of VIAIR VIAIR does not make any representations warranties or guarantees express or implied as to the accuracy or completeness...

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