IMPORTANT SAFETY INSTRUCTIONS

CAUTION

1. To reduce risk of electrical shock:
2. Do not disassemble. Do not attempt repairs or modifications. Refer to qualified service agencies for all service and repairs.
3.  Do not use this product in an area where it can fall or be pulled into water or other liquids.
4. Do not reach for this product if it has fallen into liquid.
5. Use compressor with 12-Volt DC systems only.
6. This product should never be left unattended during use.

WARNING – To prevent injury:

1. Never allow children to operate compressor. Close supervision is necessary when this compressor is being used near children-
2. Compressor will become very HOT during and immediately after use. Do not touch any part of the compressor with bare hands during and immediately after use.
3. Do not use this product near flames or explosive materials or where aerosol products are being used.
4. Do not operate this product where oxygen is being administered.
5. Do not pump anything other than atmospheric air.
6. Never use this product while sleepy or drowsy.
7. Do not use any tools or attachments without first determining maximum air pressure for that tool or attachment.
8. Never point any air nozzle or air sprayer toward another person or any part of the body.
9. The 444C 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.
10. Wear safety glasses or goggles when installing this product.
11. Use only in well ventilated areas.

INSTALLATION

Please read and follow the installation instructions carefully to avoid injury or damage to the compressor and your vehicle. This air compressor and parts have been carefully produced and packaged. Before you begin installation, please familiarize yourself with Installation Parts List (Fig. 1) of this manual.

Guidelines for Selecting Mounting Location:

1. Select a FLAT AND SECURE location where the compressor can be mounted.
2. To maximize air compressor performance, locate compressor as CLOSE TO THE BATTERY as possible so that the length of the positive lead wire required is at a minimum.
3. Choose mounting location that is as cool as possible and AWAY FROM HEAT SOURCES. The cooler the ambient temperature, the less chance the compressor will overheat.
4. This compressor is moisture & splash resistant, but NOT WATERPROOF. Do not mount compressor in locations where the unit is likely to come in contact with water.
5. For remote filter mounting (sold separately), select compressor mounting location where air line can be routed from compressor air inlet to remote inlet air filter. Make sure Remote Inlet Air Filter is located in a dry location, away from the elements.
6. If it is necessary to mount air compressor further away from the battery, such as inside your vehicle or on the chassis of a pickup, use a minimum 8 AWG positive lead wire for remote installation.
7. Do not mount compressor near areas where flammable liquids are stored.
8. VIAIR® suggests the use of a 40-Amp rated relay with each compressor (not included with this kit).
9. VIAIR® also suggests the use of a 200 PSI maximum pressure switch to regulate on & off pressures. Pressure switch is not included with this kit.

MOUNTING AND WIRING

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 air compressor with the four sets of bolts, nuts, washers, and locking washers provided. (See Fig. 2 for Mounting Instructions). Use of thread sealant is recommended.
5. Your air compressor comes with a heavy duty heat-resistant leader hose with 1/4″ NPT fittings. This leader hose is designed to prolong the life of your air line. Do not remove the leader hoses from the air compressors.
6. IMPORTANT: Please note, the leader hose that comes with your compressor has a built-in inline check valve. Do Not remove inline check valve from leader hose
7. Connect compressor positive lead wire to one of the leads of your pressure switch.
8. Make sure that your compressor setup is properly fused. The 444C compressor will pull 23-Amps at peak draw.
9. Always locate fuse as close as possible to power source.
10. Before connecting to power source, re-check to make sure that all connections are made properly.
11. Connect and test compressor system by running the compressor for a short time to build up pressure in your air tank.
12. Once air pressure reaches preset cut out pressure of your pressure switch (pressure switch not included) the compressor will shut off. Inspect all air line connections for leaks with soap and water solution. If a leak is detected, the air line may not be cut squarely or pushed all the way in. Repair connections as needed.

(Fig. 1) 444C Compressor Installation Parts List:

A. Mounting Bolts (4pcs)
B. Flat Washers (8pcs)
C. Locking Washer (4pcs)
D. Nuts (4pcs)

E. Direct Inlet Air Filter (1pc)
F. Replacement Filter Element (1pc)

(Fig. 2) Compressor
Mounting Hardware

B. Mounting Bolt
C. Flat Washer
D. Locking Washer
E. Nut
K. Vibration Isolator

OPERATING INSTRUCTIONS

1. IMPORTANT: Always operate the compressor at or below the MAXIMUM PRESSURE RATING of the compressor (200 PSI).
2. Always observe the MAXIMUM DUTY CYCLE of the air compressor. Refer to Compressor Applications and Specifications Sections of this manual for details. Operation exceeding maximum pressure ratings and/or duty cycle will result in damage to the air compressor.
3. Your air compressor is equipped with AUTOMATIC THERMAL OVERLOAD PROTECTORS. This feature is designed to protect the air compressor from overheating and causing permanent damage. The thermal overload protector will automatically cut power to your air compressor should the internal operating temperature of the air compressor rise above safe levels during excessive use.
4. Should at any time during use, your air compressor automatically shut off, do not attempt to restart them. Cut power to the air compressor. The automatic thermal overload protector will automatically reset when internal temperature of the air compressor drops below safe levels. After allowing air compressor to cool off for about 30 minutes, you can safely resume use of the air compressor.
5. To prevent discharge of your vehicle’s battery, we recommend that you keep the vehicle’s engine running while operating air compressors
6. ONLY OPERATE AIR COMPRESSOR IN WELL-VENTILATED AREAS.
7. Compressor performance is enhanced when operating compressor with vehicle’s engine running.

MAINTENANCE & REPAIRS

1. Periodically check all electrical, fittings connections. Clean and tighten as needed.
2. Periodically check all mounting screws. Tighten as needed.
3. Replace Air Filter Element periodically. Replacement frequency depends on operating frequency and operating environment. For frequent use in dusty environments, we recommend that you replace air filter element once a month.
4. Regularly clean dust and dirt from compressor cooling fins and motor housing.
5. Your air compressor is equipped with a permanently lubricated, maintenance-free motor. Never try to lubricate the compressor
6. All repairs should be performed by Manufacturer or Manufacturer’s Authorized Service Agencies only.

CAUTION:

Never touch the air compressor or fittings connected to the air compressor with bare hands during or immediately after use. The leader hose and fittings connected to leader hose will become very HOT during and after use. If necessary, wear heat resistant gloves to handle fittings, air line, and leader hose.

SPECIFICATIONS

• Part No. 444SB / Single 444 High Performance Compressor / Stealth Black (CE Certified)
• Part No. 444SC / Single 444 High Performance Compressor / Chrome (CE Certified)

COMPRESSOR APPLICATION GUIDE

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%.

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.

TROUBLESHOOTING GUIDE:

CAUTION: NEVER DISASSEMBLE COMPRESSOR WHILE COMPRESSOR IS PRESSURIZED.

Wiring Diagram

(Pressure Switch, Relay, & Fuse Not Included)

WIRE REFERENCE:

30 (Red)
85 (White)
86 (Black)
87 (Blue

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.

Customer support

15 EDELMAN • IRVINE, CA 92618
TEL: 949-585-0011 • FAX: 949-585-0188
www.viaircorp.com