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LIMITED WARRANTY:

VIAIR Corporation warrants this product, when properly installed and under normal conditions of use, to be free from defects in 

workmanship and materials for a period of one year from its original date of purchase. To receive warranty service or repair, please 

contact VIAIR Corporation.  

Returns should be made within one year of the date of purchase, after a Return Goods Authorization (RGA) number has been 

assigned by VIAIR Corporation.  To obtain RGA, fax a copy of your receipt to (949) 585-0188. For complete warranty details, please 

visit: 

www.viaircorp.com/warranty

PLEASE NOTE:

THIS WARRANTY COVERS PRODUCT DEFECTS ONLY; IT DOES NOT COVER INCIDENTAL OR CONSEQUENTIAL DAMAGES 

 

AS RESULT OF MISUSE OR ABUSE. 

This Manual is proprietary to VIAIR Corporation and no ownership rights are hereby transferred. No part 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 of the 
Manual. Users must be aware that updates and amendments will be made from time to time to the Manual. It is the user’s responsibility 
to determine whether there have been any such updates or amendments. Neither VIAIR nor any of its directors, officers, employees 
or agents shall be liable in contract, tort or in any other manner whatsoever to any person for any loss, damage, injury, liability, cost or 
expense of any nature, including without limitation incidental, special, direct or consequential damages arising out of or in connection 
with the use of the Manual.

15 EDELMAN • IRVINE, CA 92618

TEL: (949) 585-0011 • FAX: (949) 585-0188

www.viaircorp.com 

MODEL 400P AUTOMATIC SPECIFICATIONS:

Part Number:   

40045 / 400P Automatic

Motor Voltage:  

12-volt

Motor Type:  

Permanent Magnetic

Max. Intermittent Pressure:  

150 PSI

Max. Duty Cycle:  

33% (20 on / 40 off)

(Min. On/Off @ 72ºF & 100 PSI)

Continuous Use @ 72ºF & 30 PSI:  

Approx. 40 Minutes

Max. Current Consumption:  

30 Amps

Fuse:  

40 Amps

Inline Pressure Gauge:  

160 PSI

Auto. Reset Thermal Protection:  

Yes

400P AUTOMATIC PORTABLE COMPRESSOR

*Tolerance: 

± 3%

Summary of Contents for HEAVYWEIGHT Series

Page 1: ......

Page 2: ... or explosive materials or where aerosol products are being used Do not operate this product where oxygen is being administered Do not pump anything other than atmospheric air Never use this product while sleepy or drowsy Do not use any tools or attachments without first determining maximum air pressure for that tool or attachment Never point any air nozzle or air sprayer toward another person or ...

Page 3: ... 155 PSI 5 During inflation of tire pressures between 130 PSI to 155 PSI if you stop inflation the compressor may not restart This is completely normal since inline pressure is greater than cut on pressure of the pressure switch and less than cut off pressure of the pressure switch To restart compressor deflate tire pressure to below 130 PSI reconnect tire chuck to tire valve stem and resume tire ...

Page 4: ...automatically turns off the motor when the internal pressure of the air compressor reaches the factory set cut off pressure of 155 PSI and restarts when the internal pressure drops below 130 PSI TIRE DEFLATION 1 Push the tire chuck with the lever in the upright position down over the tire valve stem and then push the lever down to the horizontal position to lock in place 2 Press the bleeder valve ...

Page 5: ...nds during or immediately after use The extension hose and fittings connected extension hose will become very HOT during and after use If necessary wear heat resistant gloves to remove hose from the compressor quick connect stud RECOMMENDATION This compressor is equipped with a poppet pressure release head valve Head pressure will slowly decrease pressure will be released through the intake port o...

Page 6: ...ive red plug from compressor s air inlet port 3 Install inlet air filter onto compressor s air inlet port Thread tape Not Recommended 4 Hand tighten inlet air filter IMPORTANT For optimal compressor performance replace filter element periodically Clogged filter will drastically reduce compressor flow rate and performance 400P AUTOMATIC PORTABLE COMPRESSOR USER MANUAL ...

Page 7: ...or cuts out repeatedly 1 Lack of proper ventilation or ambient temperature is too high 2 Compressor valves failed 1 Move compressor to well ventilated area or area with lower ambient temperature 2 Replace compressor Excessive knocking or rattling 1 Worn bearing on eccentric or motor shaft 2 Cylinder or piston ring is worn 1 Service or replace compressor Compressor air flow lower than normal or can...

Page 8: ...tal 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 of the Manual Users must be aware that updates and amendments will be made from time to time to the Manual It is the user s responsibility to determine whether there have been any such updates or amendments Neither VI...

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