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VMAC – Vehicle Mounted Air Compressors
Toll Free: 1-888-241-2289 Local: 250-740-3200
Fax: 1-250-740-3201
CONTENTS
1.0 Information ............................................................................... 4
1.1 Foreword ............................................................................ 4
1.2 Important Safety Notice ...................................................... 4
1.3 Safety Messages ................................................................ 5
1.4 System ................................................................................ 8
1.5 Auxiliary Air Tank................................................................ 10
2.0 Routine Maintenance ............................................................... 11
2.1 Maintenance Schedule ....................................................... 11
2.2 Start-up Procedure ............................................................. 12
2.3 Shutdown Procedure .......................................................... 13
2.4 Check oil level in oil/air separator tank ............................... 14
2.5 Check pressure supply valve ............................................. 16
2.6 Check compressor for damage .......................................... 17
2.7 Check air lines and hoses for damage ............................... 17
2.8 Change compressor oil ...................................................... 18
2.9 Change compressor oil filter ............................................... 19
2.10 Change compressor air filter ............................................ 21
2.11 Change coalescing filter ................................................... 23
2.12 Electrical ........................................................................... 24
3.0 System Diagnosis .................................................................... 25
4.0 Illustrated Parts Lists ............................................................... 27
4.1 Manifold and Filters ............................................................ 27
4.2 Oil/Air Separator Tank ........................................................ 28
4.3 Compressor and Brackets .................................................. 29
4.4 Electrical Components ....................................................... 30
4.5 Hoses, Tubing and Harness ............................................... 31
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Owner’s Manual — Document 1930224
ECN: 14-076 – Updated hose lengths
ECN: 14-045 – Solenoid change to
4800664
ECN: 14-094 – Solenoid change to
4800679
ECN : 15-080: Updated pg. 28
ECN 18-070: Tank Fitting Changes
S700078 Air Compressor System
Changes and Revisions
PD/RD/AM 10May2019
10 May 2019
Trademarks:
S700078 and VMAC are registered trademarks of VMAC Global Technologies
Loctite is registered trademarks of Loctite Corporation
Notice: Manuals and products are subject to change without notice
Important Information
The VMAC warranty form is located at the back of this manual or
online at:
http://vmacair.com/support/warranty/
This warranty form must be completed and mailed or faxed to
VMAC at the time of installation for any subsequent warranty claim
to be considered valid.
To order parts, contact your VMAC dealer. Your dealer will ask for
the VMAC serial number, part number, description and quantity. To
locate your nearest dealer, call 1-888-241-2289 or go to:
http://vmacair.com/dealer-locator/
VMAC recommends covering all hoses and wires for
protection.
All trademarks used in this manual are the property of the respective copyright
holder. The contents of this manual may not be reproduced in any form without the
express written permission of VMAC, 1333 Kipp Road, Nanaimo, BC V9X 1R3.
Copyright 2014
VMAC – Vehicle Mounted Air Compressors
Toll Free: 1-888-241-2289 Local: 250-740-3200
Fax: 1-250-740-3201
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VMAC – Vehicle Mounted Air Compressors
Toll Free: 1-888-241-2289 Local: 250-740-3200
Fax: 1-250-740-3201
Printed in Canada
Serial Number Breakdown Description
W, Y ONLY AS PER ASME STANDARD: Y14.35M
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VMAC – Vehicle Mounted Air Compressors
Toll Free: 1-888-241-2289 Local: 250-740-3200
Fax: 1-250-740-3201
1.0 Information
1.1 Foreword
This manual provides maintenance, repair and troubleshooting
instruction for the S700078 air compressor system. Proper and
regular servicing provide continuing high performance and long life at
low cost. For more information contact VMAC.
KEEP THIS MANUAL WITH THE AIR COMPRESSOR UNIT FOR
USER REFERENCE
1.2 Important Safety Notice
WHEN THE ENGINE IS RUNNING, EVEN WITH THE
COMPRESSOR OFF, THE COMPRESSOR WILL
PRODUCE UP TO 50 PSI (414 kPa) OF COMPRESSED
AIR. NEVER WORK ON THE COMPRESSOR SYSTEM
WITH THE ENGINE RUNNING. ALWAYS ALLOW
PRESSURE TO DRAIN FOR A MINIMUM OF 5 MINUTES,
OPEN THE SUPPLY VALVE AND TRIGGER ANY TOOLS
ATTACHED TO DEPRESSURIZE THE SYSTEM BEFORE
SERVICING THE COMPRESSOR AND COMPONENTS.
The information contained in this manual is based on sound
engineering principles, research, extensive field experience and
technical information. Information is constantly changing with the
addition of new models, assemblies and service techniques. If a
discrepancy is noted in this service manual, contact VMAC prior to
initiating or proceeding with service. Current information may clarify
the matter. Any person with knowledge of such discrepancies who
performs service and repair assumes all risks.
Only proven service procedures are recommended. Anyone who
departs from the specific instructions provided in this manual must
first assure that their safety and that of others is not being
compromised and that there will be no adverse effects on
performance or the operational safety of the equipment.
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VMAC – Vehicle Mounted Air Compressors
Toll Free: 1-888-241-2289 Local: 250-740-3200
Fax: 1-250-740-3201
VMAC will not be held responsible for any liability, injuries, loss or
damage to individuals or to equipment as a result of the failure of any
person to properly adhere to the procedures set out in this manual or
standard safety practices. Safety should be your first consideration in
performing service operations. If you have any questions concerning
the procedures in this manual or require any more information on
details that are not included in this manual, please contact VMAC
before beginning repairs.
1.3 Safety Messages
This symbol is used to call your attention to instructions
concerning your personal safety. Watch for this symbol;
it points out important safety precautions, it means
“attention, become alert!” Your personal safety is
involved. Read the message that follows and be alert to
the possibility of personal injury or death. Be alert; your
safety is involved. While it is impossible to warn about
every conceivable hazard, let good common sense be
your guide.
This symbol is used to call your attention to instructions
on a specific procedure that if not followed may damage
or reduce the useful life of the compressor.
This symbol is used to call your attention to additional
instructions or special emphasis on a specific procedure.
Safety Precautions
Read this information before operating the compressor for the first
time. Follow the information and procedures in this manual for
operation, maintenance and repair. Observe the following items to
reduce the chance of personal injury or equipment damage.
Follow all safety precautions for mechanical work. Moving drive belts
or fan blades are an extreme hazard. Stay clear of all moving parts
when the system is operating. Only qualified personnel should
perform maintenance and repair on system components with the
compressor shutdown.
Proper service and repair are important to the safety of the service
technician and the safe, reliable operation of the equipment. Always
use genuine VMAC replacement parts; do not use a substitute.
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VMAC – Vehicle Mounted Air Compressors
Toll Free: 1-888-241-2289 Local: 250-740-3200
Fax: 1-250-740-3201
The procedures described in this service manual are effective
methods of service and repair. Some procedures may require the
use of tools specially designed for a specific purpose. Anyone using
a replacement part, service procedure or tool must first determine
that neither their safety nor the safe operation of the equipment will
be compromised by the replacement part, service procedure or tool
selected.
This manual contains various warnings, cautions and notices that
must be observed to reduce the risk of personal injury during service
or repair and the possibility that improper service or repair may
damage the equipment or render it unsafe. Be aware that it is
impossible to warn of all the possible hazardous consequences that
might result from failure to follow these instructions.
Fire and Explosion Hazards
Fire in the compressor can cause an explosion and flame
projection. Should this occur, there is potential for serious
injury or death.
Vaporized oil propelled by high-pressure air is an explosive
mixture.
You must observe the following when operating the compressor:
• constant vigilance is necessary around high-energy
equipment
• be attentive for unexplained changes in operation
parameters and record any changes
• never bypass or disable the oil temperature switch
• never expose the tank or compressor to extreme heat
• ensure that the air entering the compressor is free of
flammable vapors
Personal Hazards
Follow all safe work practices. Wear the appropriate safety
equipment.
Do not breathe the compressor air. Vaporized oil is a
respiratory hazard.
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VMAC – Vehicle Mounted Air Compressors
Toll Free: 1-888-241-2289 Local: 250-740-3200
Fax: 1-250-740-3201
Always use the appropriate personal protective
equipment, particularly eye and hearing protection
when operating air-powered equipment.
The compressor system is under sufficient pressure
that a leak could force the oil/air mixture through the
skin directly into your bloodstream. This will cause
death.
Never adjust or attempt to make any repairs to the
compressor system while engine is running. Components
and hoses under pressure could separate suddenly and fly
out and cause serious injury or death.
Never perform maintenance procedures on the system until
the Compressor has been shut down for 5 minutes. After 5
minutes open the pressure supply valve to ensure the
system is depressurized. Failure to depressurize the system
could cause parts to separate explosively. Flying parts could
cause serious injury or death. Oil/air mixture could be
sprayed out with sufficient force to penetrate the skin, which
could cause serious injury or death.
The compressor and the compressor system gets very hot
during operation, contact with the components or the oil can
cause serious burns.
Components and hoses under pressure could separate
suddenly and fly out and cause serious injury or death. The
auxiliary air tank must be drained before servicing any
components in the compressor system.
Pressure regulator and/or lubricator
The compressor can produce air pressures up to
approximately 150 PSI (896 kPa). It is the responsibility of
the user to know the pressure and air flow requirements of
the tools powered by the air compressor system. An
appropriate air pressure regulator and lubricator can be
externally installed to the outside of the pressure supply
valve. Failure to regulate the air pressure could cause
damage to the tool.
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VMAC – Vehicle Mounted Air Compressors
Toll Free: 1-888-241-2289 Local: 250-740-3200
Fax: 1-250-740-3201
1.4 System
The compressor system is protected from over pressurization by a
mechanical inlet control in the compressor that regulates air flow in
response to the demand. There is also a 200 PSI (1,379 kPa)
pressure relief valve in the oil/air separation tank to protect the
system from over pressurization. If the oil temperature exceeds
290°F (143°C) the system is switched off, draining the high pressure
air and reducing the load on the engine.
VMAC certified oil is used to lubricate the compressor and is the only
approved lubricant. Any other oil will void the warranty. The oil/air
separator tank removes most of the oil from the compressed air and
the coalescing separating filter removes the remaining oil. The oil is
passed through a replaceable filter to remove contaminants.
The compressor intake is equipped with a replaceable paper filter
element.
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VMAC – Vehicle Mounted Air Compressors
Toll Free: 1-888-241-2289 Local: 250-740-3200
Fax: 1-250-740-3201
Compressor
Oil/Air Separator
Tank
Manifold Block
Coalescing
Separator Filter
Oil Filter
Oil Cooler
Pressure Relief Valve
Air Filter
Solenoid Valve
Oil Fill/Dipstick
Drain Valve
Thermostat
Inlet Control
Valve
Wiring Harness