Vmac VR70 Owner's Manual
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Vmac VR70 Owner's Manual

Underhood air compressor
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VR70 & VR150 UNDERHOOD
AIR COMPRESSOR
OWNERS MANUAL
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Summary of Contents for Vmac VR70

  • Page 1 VR70 & VR150 UNDERHOOD AIR COMPRESSOR OWNERS MANUAL Keep with vehicle...

  • Page 3: Table Of Contents

    Table of Contents Accessory Products from VMAC ..........3 Introduction .................. 4 Ordering Parts ................4 Important Safety Notice .............. 4 Safety Messages ................5 Safety Precautions ..............6 Installation Instructions .............. 8 System Specifications ..............9 Operating Principles..............10 Oil Separation and Cooling ............
  • Page 4 All trademarks used in this manual are the property of the respective copyright holder. Copyright 2017 The contents of this manual may not be reproduced in any form without the express written permission of VMAC. Printed in Canada 1333 Kipp Road, Nanaimo, BC V9X 1R3 1-800-738-8622 VMAC –...

  • Page 5: Accessory Products From Vmac

    Accessory Products from VMAC The following accessory products for your VR compressor system are available from VMAC. For more information or to order these products, call toll free 1-800-738-8622 or local 250-740-3200. Eliminator Aftercooler Part Number A800070 Removes up to 80% of moisture from compressed air.

  • Page 6: Introduction

    VR70 and VR150 underhood air compressor, and VMAC Electronic Throttle Controller. Ordering Parts To order parts, contact your VMAC dealer. Your dealer will ask for the VMAC serial number, part number, a description of the part and the quantity. To locate your nearest dealer, call 1-800-738-8622.

  • Page 7: Safety Messages

    This symbol is used to call your attention to additional instructions involving fire hazards. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Local: 1-250-740-3200 Fax: 1-250-740-3201...

  • Page 8: Safety Precautions

    Observe these rules when operating the compressor: Do not bypass or disable the oil temperature sensor. Do not expose the tank or compressor to extreme heat. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Local: 1-250-740-3200 Fax: 1-250-740-3201...
  • Page 9 Do not bypass the park brake or DDC connections Do not operate the compressor while driving Do not tamper with the pressure relief valve Do not attempt to repair or modify any component VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Local: 1-250-740-3200 Fax: 1-250-740-3201...

  • Page 10: Installation Instructions

    Do not attempt to install any of these systems without the appropriate installation manual. Ensure that the safety and operational instruction decal is affixed in an obvious location so that vehicle operators can easily see it. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Local: 1-250-740-3200 Fax: 1-250-740-3201...

  • Page 11: System Specifications

    Drive System: front end auxiliary drive Control: electric on/off 12V clutch control Maximum Air Delivery: VR70 70 CFM and 175 PSI / 1207 KPA VR150 150 CFM and 175 PSI / 1207 KPA Pressure Regulation: mechanical inlet control valve modulates flow...

  • Page 12: Operating Principles

    These system filters enhance performance and extend component life by reducing damage from dust and other debris. Proper filter maintenance is the key to long compressor life. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Local: 1-250-740-3200 Fax: 1-250-740-3201...

  • Page 13: Belt Alignment And Tensioning

    The compressor is equipped with an oil temperature sensor which stops system operation should the temperature become excessive. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Local: 1-250-740-3200 Fax: 1-250-740-3201...

  • Page 14: Line Protection

    Failure to observe this procedure may result in damage to the system. The line from the VMAC tank to the auxiliary air tank must have a check valve installed to prevent VR tank blow-down from draining the auxiliary tank and to prevent moisture from entering the VMAC tank.

  • Page 15: System Operation

    2. Start and run the vehicle long enough for the engine to stabilize at base idle and reach normal operating temperature. 3. Close the hood (if open). 4. Close all compressor air system outlets. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Local: 1-250-740-3200 Fax: 1-250-740-3201...

  • Page 16: Cold Climate Operation

    1. Place the manual transmission in neutral or the automatic transmission in park and fully apply the park brake. 2. Start the vehicle engine and allow it to reach normal operating temperature. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Local: 1-250-740-3200 Fax: 1-250-740-3201...

  • Page 17: Control Box Features And Operation

    If the vehicle is to be used consistently in cold climates the use of a de-icer kit (VMAC part #A700031) is recommended. 4. Activate the compressor by pressing the “ON” button.

  • Page 18: Error Messages

    Faulty clutch. Shorted to ground or CLUTCH Flash code 2 current draw SHORT RED LED pinched clutch wire. on clutch >10A Flash Codes FLASH CODE 1 FLASH CODE 2 VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Local: 1-250-740-3200 Fax: 1-250-740-3201...
  • Page 19 4. The following tables represent the lines that will be shown on the control box display. Completely fill in all of the blanks on the following tables. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Local: 1-250-740-3200 Fax: 1-250-740-3201...
  • Page 20 5. When you have reached the end, “NO SVC NEEDED” will be displayed. 6. Press both the OFF and ON buttons at the same time to exit diagnostics mode. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Local: 1-250-740-3200 Fax: 1-250-740-3201...

  • Page 21: Automatic Shutdown

    The oil is clear and the level may be difficult to see in the sight glass. Have someone watch the level as you add oil. Oil Fill Plug V 150 V 70 VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Local: 1-250-740-3200 Fax: 1-250-740-3201...

  • Page 22: Adjusting The System

    When the inlet control valve is wide open, approximately thirty engine revolutions are required to produce one cubic foot of air flow from the VR70 compressor and fifteen for the VR150 compressor. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Local: 1-250-740-3200...
  • Page 23 The diagram below shows a system testing and adjustment tool, (VMAC part # A700052) that you can use to simulate different operating situations. Install this tester to the tank output fitting before making any changes.

  • Page 24: Adjusting The Pressure Regulator

    6. Rotate the adjustment bolt clockwise to increase pressure. Rotate counterclockwise to decrease pressure. Tighten the lock nut. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Local: 1-250-740-3200 Fax: 1-250-740-3201...

  • Page 25: Electronic Throttle Control Adjustment

    5. Turn the maximum RPM adjustment screw clockwise to increase engine speed and counterclockwise to decrease maximum engine speed. Count the turns in case you have to start over. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Local: 1-250-740-3200 Fax: 1-250-740-3201...
  • Page 26 Factory setting, typical 150 psi / 1034 kPa Factory setting, typically 140 psi / 965.3 kPa Recommend 10 psi / 68.985 kPa below full pressure Regulator adjustment VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Local: 1-250-740-3200 Fax: 1-250-740-3201...

  • Page 27: Routine Maintenance

    15 minutes at no load to ensure bearing lubrication and rotation. During the warranty period, you must follow the maintenance schedule and use only original genuine VMAC replacement parts to maintain your system and your warranty. The most critical aspect of maintenance is proper air filtration and clean oil.

  • Page 28: Inspect The Drive Belt

    Turn the system off and listen for the pressurized air to blowdown through the muffler. If the muffler is showing signs of blockage, contact your local authorized VMAC dealer for a replacement part. VMAC – Vehicle Mounted Air Compressors...

  • Page 29: Inspect The Pressure Relief Valve

    If the pressure relief valve is showing loss of functionality, contact your local authorized VMAC dealer for a replacement part. Relief valve failure can result in air/oil tank over pressurization leading to system failure or rupture.

  • Page 30: Replacing The Oil Filter

    2. Remove the drain plug and drain the oil into a container large enough to hold at least 1.32 USG (5 liters) for the VR70 and 2.38 USG (9 liters) for the VR150. 3. Install and tighten the plug.

  • Page 31: Changing Compressor Oil

    2. Remove the drain plug and drain the oil into a container large enough to hold at least 5 litres (1.32 U.S. gal.) for the VR70 and 9 litres (2.38 U.S. gal.) for the VR150. VMAC – Vehicle Mounted Air Compressors...
  • Page 32 4. If you are replacing the oil filter, follow filter replacement procedures. 5. Remove the filler plug from the air inlet control valve and pour VMAC compressor oil into the oil filler hole on the inlet control valve using a funnel. You must use the supplied compressor oil in this system.

  • Page 33: Changing The Coalescing Filter

    1. Clean the front and back of the tank to prevent contamination. 2. Remove the drain plug and drain the oil into a container large enough to hold at least 5 litres (1.32 U.S. gal.) for the VR70 and 9 litres (2.38 U.S. gal.) for the VR150.
  • Page 34 O-ring Rear cap seal Coalescing filter Coalescing filter spring VR70 System (muffler not shown) VR150 System Check the inside of the tank for any evidence of metal filings or contamination; if found, flush the tank, hoses and cooler. Metal filings will damage the compressor.
  • Page 35 Failure to use this special oil will result in damage to the compressor and may void your warranty. 19. Turn the compressor clutch clockwise to speed the fill process. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Local: 1-250-740-3200 Fax: 1-250-740-3201...

  • Page 36: Problem Diagnostics / Troubleshooting

    For accurate diagnosis, refer to the electrical circuit diagram in the installation manual. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Local: 1-250-740-3200 Fax: 1-250-740-3201...
  • Page 37 Engine fan clutch Replace fan clutch. slipping. High ambient Reduce duty cycle. temperatures. Oil temperature probe Replace if defective. failure. System needs service Perform recommended service VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Local: 1-250-740-3200 Fax: 1-250-740-3201...
  • Page 38 Idle-down pressure is Reduce idle-down setting of the too high. throttle control. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Local: 1-250-740-3200 Fax: 1-250-740-3201...
  • Page 39 Throttle not properly Adjust idle down screw. adjusted. Engine RPM stays at Idle-down setting is too Reset idle-down pressure. maximum whenever high. the compressor is running. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Local: 1-250-740-3200 Fax: 1-250-740-3201...
  • Page 40 Turn off any air tools before shutdown. shutting down compressor. Oil drips from clutch Seal leaking. Contact the nearest dealer to after shutdown. replace gearbox input shaft seal. VMAC – Vehicle Mounted Air Compressors Toll Free: 1-800-738-8622 Local: 1-250-740-3200 Fax: 1-250-740-3201...

  • Page 41: Vmac Warranty

    Warranty Policy and VMAC Limited Lifetime Warranty for full details. Warranty Registration The VMAC warranty form is located at the back of this manual. This warranty form must be completed and sent to VMAC at the time of installation for any subsequent warranty claim to be considered valid.
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  • Page 43 Warranty Registration This form must be fully completed and returned to VMAC at the time of installation. Warranty may be void if this form is not received by VMAC within 30 days of installation. VMAC’s Warranty policy and registration can be viewed online at: www.vmacair.com/warranty...
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This manual is also suitable for:

Vr150

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