VIAIR 450P-RV Automatic Portable Compressor

Important Safety Instructions

CAUTION: To reduce risk of electrical shock or electrocution:

• Do not disassemble. Do not attempt repairs or modifications. Refer to qualified service agencies for all service and repairs.
• Do not use this product in or area where it can fall or be pulled into water or other liquids.
• Do not reach for this product if it has fallen into liquid.
• Use this compressor with 12-volt DC systems only.
• This product should never be left unattended during use.

WARNING: To prevent injury:

• Never allow children to operate this compressor. Close supervision is necessary when this compressor is being used near children.
• This compressor will become very HOT during and immediately after use. Do not touch any part of this compressor with bare hands, other than the ON/OFF switch during and immediately after use.
• Do not use this product near flames 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 any part of the body.
• This air compressor is equipped with an Automatic Reset Thermal Protector, and can automatically restart after the thermal protector resets. Always cut off power source when thermal protector becomes activated.
• Wear safety glasses or goggles when operating this product.
• Use only in well ventilated areas.
• After usage, always release excess pressure from the coil hose by turning On/Off switch to the Off position, disconnect hose from compressor, with the tire inflation gun still connected to the other end of the coil hose, pull trigger on the tire inflation gun to release excess pressure.

Operating Instructions

Please read and follow the operating instructions carefully to assure that you will enjoy the convenience and best use out of your air compressor.

General Operation

• Always operate the compressor AT OR BELOW THE MAXIMUM PRESSURE RATING of the compressor. Refer to Specifications section of this manual.
• Always OBSERVE THE MAXIMUM DUTY CYCLE of the air compressor. Refer to Specifications section of this manual for details. Operations exceeding maximum pressure ratings and or duty cycle will result in damage to air compressor.
• Your air compressor is equipped with an AUTOMATIC THERMAL OVERLOAD PROTECTOR. This feature is designed to protect the air compressor from over-heating and causing permanent damage. The thermal overload protector will automatically cut off power to the air compressor should internal operating temperature rise above safe levels during excessive use.
• Should your compressor shut off suddenly after extended use, do not attempt to restart. Turn the ON/OFF switch to the OFF position. The automatic thermal overload protector will automatically reset when internal temperature drops below safe level. After allowing the air compressor to cool off for about 30 minutes, you can safely resume use by turning on the air compressor.
• This compressor is equipped with a built-in pressure switch with a factory set cut-on pressure of 120 PSI (± 5%) and a factory set cut-off pressure of 145 PSI (± 5%). During inflation of tire pressures between 115 PSI to 145 PSI, if you stop inflation, the compressor may not restart. This is normal if inline pressure is greater than the cut-on pressure and less than the cut-off pressure. To restart, deflate tire pressure to below 115 PSI, reconnect the tire chuck to the valve stem, and resume inflation.
• You may experience a slight delay of the compressor's motor starting when the ON/OFF switch is turned on while the compressor is pressurized. This is a normal delayed reaction, not a malfunction.
• It is strongly recommended that you keep the vehicle's engine running while using the air compressor to prevent discharge of your vehicle's battery.
• ONLY OPERATE THE AIR COMPRESSOR IN WELL VENTILATED AREAS. Compressor performance is enhanced when operating with the vehicle engine running.

IMPORTANT: Engine must be running while using this compressor.

Before attaching air compressor power clamps to your vehicle's battery terminals, ensure the ON/OFF switch is in the OFF position. Attach the Positive (+) battery clamp (Red) to the Positive terminal of the battery and the Negative (-) battery clamp (Black) to the Negative terminal of the battery. Always keep your vehicle's engine running while operating the compressor to avoid draining your vehicle's battery.

CAUTION: Your Portable Air Compressor is Moisture and Dust Resistant, but NOT WATER OR DUST PROOF. Never place the compressor in soft sand while running. Vibration can cause the compressor to settle into soft sand, resulting in the compressor drawing in foreign particles. Never expose the compressor to water while running.

Tire Inflation

• Attach one end of the extension coil hose to the compressor and the other end to the tire gun kit, using the appropriate chuck (45-degree angled or 90-degree twist-on) as needed.
• Turn the compressor switch ON and hold down the trigger on the tire gun kit to begin inflation.
• When desired pressure is reached, release the trigger. Turn the compressor power switch OFF when finished.

NOTE: To release excess pressure, turn off the compressor and disconnect the hose. With the tire inflation gun still connected to the other end of the coil hose, pull trigger on the tire inflation gun to release excess pressure.

CAUTION: To avoid over inflation, never exceed recommended pressure on articles to be inflated. Bursting can cause serious injury.

NOTE: Your air compressor is equipped with a pressure switch (cut-in at 120psi, cut-out at 145psi). This feature protects the compressor from over-pressure. The switch automatically turns off the motor when internal pressure reaches 145psi and restarts when it drops below 120psi.

Tire Deflation

• Push the tire chuck (with the lever in the upright position) down over the tire valve stem, then push the lever down to the horizontal position to lock it in place.
• Press the bleeder valve button on the tire gun kit to decrease tire pressure.
• When desired pressure is reached, release the bleeder valve button to halt deflation.

IMPORTANT: Make sure the compressor sits upright while operating. Do not operate the compressor in any other position. Avoid tugging at the compressor to move it; instead, move it to the same side of the vehicle as the tires being aired up.

Always make sure the Portable Compressor's power cord is uncoiled and fully extended when using your air compressor to avoid overheating the power cord.

Inline Pressure Gauge

• The pressure gauge on the inflation gun provides convenient tire pressure monitoring when airing up or down (it does not measure airflow of the compressor). This eliminates switching back and forth between a tire chuck and a tire pressure gauge.
• Please note that during inflation and deflation, due to air velocity, the pressure gauge cannot provide perfectly accurate readings. Release the lever on the tire inflation gun during inflation to check tire air pressure.

NOTE: To release excess pressure, turn off the compressor and disconnect the hose. With the tire inflation gun still connected to the other end of the coil hose, pull the trigger on the tire inflation gun to release excess pressure.

450P-RV Automatic Accessories

45-Degree Extended Reach, Angled Chuck

Open-ended air chuck allows reach into areas difficult to reach by hand. Connects to Tire Inflation Gun.

90-Degree Twist-on Chuck

This open-ended air chuck can be attached to any inflation valve where there is limited clearance.

Primary Hose & Extension Hoses

Dual hoses, with quick connect couplings.

Tire Inflation Gun

Normally closed-ended chuck (until lever is engaged). All air chucks attach to the Tire Inflation Gun with quick connect couplings.

Safety Precautions

1. Always inflate tires to manufacturer's recommended tire pressures. Exercise extreme caution when driving with aired-down tires. Reinflate tires before high-speed roadway travel.
2. Never exceed 20 M.P.H. when driving with partially inflated tires.
3. Never make sharp turns while driving with reduced tire pressure.
4. Re-inflate tires before high speed traveling onto roadways.
5. Use heat-resistant, minimum 200 PSI-rated working pressure extension hose. Do not use aftermarket hoses with less than 200 PSI working pressure. Some aftermarket hoses may not be suitable for use with this air compressor due to heat and pressure typically generated by this type of air compressors.

CAUTION: Never touch the air compressor or fittings connected to it, other than the ON/OFF switch, with bare hands during or immediately after use. The extension hose and fittings can become very HOT. If necessary, wear heat-resistant gloves to remove the hose from the compressor quick connect stud.

Maintenance & Repairs

Your air compressor is equipped with a permanently lubricated, maintenance-free motor. Never try to lubricate the compressor. Regularly clean dust and dirt from compressor cooling fins and motor housing. All repairs should be performed by the Manufacturer or Manufacturer-authorized service agencies only.

Inlet Air Filter Installation Instruction

1. Check to make sure the air filter element is properly installed in your Inlet Air Filter Assembly.
2. Remove the temporary protective red plug from the compressor's air inlet port.
3. Install the inlet air filter onto the compressor's air inlet port. (Teflon tape is Not Recommended).
4. Hand tighten the inlet air filter.

IMPORTANT: For optimal compressor performance, replace the filter element periodically. A clogged filter will drastically reduce compressor flow rate and performance.

Troubleshooting Guide

Model 450P-RV Automatic Specifications

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.

Contact Information

VIAIR Corporation

15 Edelman, Irvine, CA 92618

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

Website: www.viaircorp.com