Vmac S700078 User manual

C# 001126
VR70 Air Compressor
Installation Manual
Kubota V3600
SYSTEM S700078

VMAC –Vehicle Mounted Air Compressors
Toll Free: 1-888-241-2289 Local: 250-740-3200
Fax: [phone]
1
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

VMAC –Vehicle Mounted Air Compressors
Toll Free: 1-888-241-2289 Local: 250-740-3200
Fax: [phone]
2
!
Owner’s Manual —Document 1930224
S700078 Air Compressor System
Changes and Revisions
Version
Revision Details
Revised by/date
Approved by/date
Implemented
A
Original manual issue
MH Aug 05/2014
-
-
B
ECN: 14-076 –Updated hose lengths
ECN: 14-045 –Solenoid change to
4800664
MP –12NOV2014
RD 14 Nov 2014
14 Nov 2014
C
ECN: 14-094 –Solenoid change to
4800679
JR –20JAN2015
MP/RD 06 Feb 2015
12 Feb 2015
D
ECN : 15-080: Updated pg. 28
MRH - 07AUG2015
JR/GB 27 Aug 2015
04 Sep 2015
E
ECN 15-135
RAR 08 Dec 2015
CH/RD 23 Dec 2015
26 Feb 2016
F
ECN 18-070: Tank Fitting Changes
DSM 24 Apr 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.
Copyright 2014
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.
PD/RD/AM 10May2019 10 May 2019

VMAC –Vehicle Mounted Air Compressors
Toll Free: 1-888-241-2289 Local: 250-740-3200
Fax: [phone]
3
Printed in Canada
Serial Number Breakdown Description
P170023|X|X|X|000X
Part
Revision
Year
Month
Manufacturing
A
-
H, J
-
N, P, R, T
-
W, Y ONLY AS PER ASME STANDARD: Y14.35M
YEAR
X
-
2009
Y
-
2010
Z
-
2011
A - 2012
B - 2013
MONTH
A
-
JANUARY
B
-
FE
BRUARY
C
-
MARCH
D
-
APRIL
E
-
MAY
F
-
JUNE
G
-
JULY
H
-
AUGUST
I
-
SEPTEMBER
J
-
OCTOBER
K
-
NOVEMBER
L
-
DECEMBER
C - 2014
D - 2015
E - 2016

VMAC –Vehicle Mounted Air Compressors
Toll Free: 1-888-241-2289 Local: 250-740-3200
Fax: [phone]
4
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.

VMAC –Vehicle Mounted Air Compressors
Toll Free: 1-888-241-2289 Local: 250-740-3200
Fax: [phone]
5
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.

VMAC –Vehicle Mounted Air Compressors
Toll Free: 1-888-241-2289 Local: 250-740-3200
Fax: [phone]
6
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.

VMAC –Vehicle Mounted Air Compressors
Toll Free: 1-888-241-2289 Local: 250-740-3200
Fax: [phone]
7
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.

VMAC –Vehicle Mounted Air Compressors
Toll Free: 1-888-241-2289 Local: 250-740-3200
Fax: [phone]
8
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.

VMAC –Vehicle Mounted Air Compressors
Toll Free: 1-888-241-2289 Local: 250-740-3200
Fax: [phone]
9
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
System Components

VMAC –Vehicle Mounted Air Compressors
Toll Free: 1-888-241-2289 Local: 250-740-3200
Fax: [phone]
10
1.5 Auxiliary Air Tank
If an auxiliary air tank is to be used with this system the
following setup MUST be followed. Failure to observe this
procedure will result in damage to the system.
1. The auxiliary air tank must be connected to the supply valve.
2. The air line MUST have a 60 psi minimum pressure check valve
(VMAC P/N # A700187) installed to prevent blow back from the
auxiliary air tank into the compressor system.
3. The air line MUST be connected as high as possible on the
auxiliary air tank.
4. The auxiliary air tank MUST have a pressure protection valve
calibrated for about 200 PSI (1379 kPa).
Install 60 psi Minimum
pressure check valve
on to supply valve

VMAC –Vehicle Mounted Air Compressors
Toll Free: 1-888-241-2289 Local: 250-740-3200
Fax: [phone]
11
2.0 Routine Maintenance
Maintenance is a planned program which provides an orderly series
of service and inspection procedures, together with cleaning. A well
planned maintenance program lowers maintenance costs, reduces
down time and can prevent possible accidents due to failed
components.
Shut down the Welder/ Compressor for 5 minutes to allow
system to depressurize.
Torque Specifications
STANDARD GRADE 8 NATIONAL COARSE THREAD
Size
1/4
5/16
3/8
7/16
1/2
9/16
5/8
¾
Foot-pounds (ft-lb)
9
18
35
55
80
110
170
280
Newton meter (N•m)
12
24
47
74
108
149
230
379
STANDARD GRADE 8 NATIONAL FINE THREAD
Size
3/8
7/16
1/2
5/8
¾
Foot-pounds (ft-lb)
40
60
90
180
320
Newton meter (N•m)
54
81
122
244
434
METRIC CLASS 10.9
Size
M8
M10
M12
M14
M16
Foot-pounds (ft-lb)
19
41
69
104
174
Newton meter (N•m)
25
55
93
141
236
2.1 Maintenance Schedule
The following maintenance schedule should be adhered to, to assure
good performance and long service life. The hours indicated are
those displayed on the hour meter. Service should be performed at
the lesser of the two intervals, whichever occurs first.

VMAC –Vehicle Mounted Air Compressors
Toll Free: 1-888-241-2289 Local: 250-740-3200
Fax: [phone]
12
Check the Illustrated Parts List for replacement part numbers or call
VMAC.
Every time before start up
•check the level of oil in the oil/air separator tank
•check pressure supply valve is in good working order
•check compressor and hoses for damage or wear
•check aftercooler drain collection bottle (if equipped)
Extreme Environmental Service Intervals
Change the following items as per intervals specified
•Stock (small) Air Filter = 50 hrs
•Heavy duty air filter (optional) = 250 hrs
•Compressor Oil = 250 hrs
•Oil Filter = 250 hrs
•Coalescent Filter = 250 hrs
Note: Inspect air filter for contamination every 5 days whether
compressor has been used, or not.
Every 500 hours as displayed on the hour meter or 6 months
which ever comes first
(more frequently if used in dusty or extreme working conditions)
•change compressor oil
•change compressor oil filter
•change compressor air filter
Every 1000 hours as displayed on the hour meter or 1 year
which ever comes first
•change coalescing filter
VMAC certified oil must be used. Failure to use this special
oil will result in damage to the compressor and will void the
warranty
2.2 Start-up Procedure
Read all the service procedures and safety warnings before
operating the compressor.

VMAC –Vehicle Mounted Air Compressors
Toll Free: 1-888-241-2289 Local: 250-740-3200
Fax: [phone]
13
The unit must be level or must not exceed 35°, as higher angles will
affect lubrication and oil and air separation.
Never start the engine before the compressor system has fully
depressurized. Starting or restarting the engine with pressure in the
system causes extremely high loads on the internal components and
may cause premature failure that may void any warranty claims.
2.2.1 Make sure the air operated equipment is securely connected to
the supply valve and turned OFF.
If air operated equipment is faulty, not securely
connected, or not connected then excessive oil may be
noticed in discharge air.
2.2.2 Place the engine main RUN-STOP switch in the STOP
position.
2.2.3 Place the compressor ON-OFF switch in the OFF position.
2.2.4 Turn the air supply valve OFF.
2.2.5 Perform the “Before Start Up” checks in procedure 2.1.
2.2.6 Start the engine according to the equipment starting procedure.
2.2.7 Turn the compressor ON-OFF switch to the ON position.
2.2.8 Slowly open the supply valve. The compressor will supply
compressed air as demand requires.
2.3 Shutdown Procedure
2.3.1 Turn OFF the air equipment connected to the supply valve.
2.3.2 Close the supply valve.
2.3.3 Turn the compressor ON-OFF switch to the OFF position.
2.3.4 Shutdown the engine according to the equipment instructions.

VMAC –Vehicle Mounted Air Compressors
Toll Free: 1-888-241-2289 Local: 250-740-3200
Fax: [phone]
14
2.4 Check oil level in oil/air separator tank
The air compressor system holds 5 litres of oil which
includes enough to fill the oil filter. The filter holds 0.3 litres
of oil. The compressor holds about 0.5 litres of oil. 4 litres of
oil is required for servicing.
The lower front panel (and hose lengths), have been
designed to allow the tank to be accessed easily for
servicing. If the front panel/tank is removed for oil change,
ensure the tank is oriented correctly to enable correct oil
levels to be read.
2.4.1 Unscrew the oil level dipstick and remove it. Take care not to
damage the O-ring on the dipstick.
2.4.2 Wipe the oil level dipstick with a clean cloth or paper towel.
2.4.3 Insert the oil level dipstick and screw it all the way down, then
unscrew and remove it.
Oil Level Dipstick
2.4.4 Check the level mark the oil has reached on the oil level
dipstick.

VMAC –Vehicle Mounted Air Compressors
Toll Free: 1-888-241-2289 Local: 250-740-3200
Fax: [phone]
15
2.4.5 Use a funnel inserted into the dipstick hole and pour in VMAC
certified and approved synthetic oil.
2.4.6 Inspect the O-ring on the dipstick for abrasions or nicks.
Replace the O-ring if damaged. Install the oil level dipstick and
tighten it securely.
2.4.7 Start the engine following the start-up procedure number 2.2.

VMAC –Vehicle Mounted Air Compressors
Toll Free: 1-888-241-2289 Local: 250-740-3200
Fax: [phone]
16
2.4.8 Turn the compressor switch on the control panel to the ON
position.
2.4.9 Allow the system to pressurize.
2.4.10 Turn the compressor switch on the control panel to the OFF
position.
2.4.11 Shutdown the engine and wait 5 minutes, then open the
pressure supply valve to depressurize the system.
2.4.12 Check for oil leaks.
2.4.13 Repeat steps 2.4.3 through 2.4.13 until the oil level dipstick
shows the oil level in the oil/air separator tank is in the
operational range.
2.5 Check pressure supply valve
Follow all safety precautions.
2.5.1 Check that the ball valve rotates freely.
2.5.2 Visually inspect the ball valve for damage, cracks or damaged
threads.

VMAC –Vehicle Mounted Air Compressors
Toll Free: 1-888-241-2289 Local: 250-740-3200
Fax: [phone]
17
2.6 Check compressor for damage
Follow all safety precautions.
2.6.1 Before starting the engine, open the service door and visually
inspect the compressor for:
•cracks in the case
•oil leaks at the seams
•loose mounting bolts
•all the hoses and fittings are secure
2.7 Check air lines and hoses for damage
Follow all safety precautions.
2.7.1 Trace all the airlines and hoses looking for chaffing against
each other or metal edges. If chaffing is seen, use plastic
convoluted loom to protect the area on the hose or airline.
2.7.2 Check that all the lines and hoses are secure. If loose hoses
are seen, secure the hoses using tie straps.
2.7.3 Examine the hoses and air lines for cuts or cracks.
2.7.4 If any of the airlines or hoses show damage they should be
replaced by an authorized VMAC Service Centre before
operating the equipment.

VMAC –Vehicle Mounted Air Compressors
Toll Free: 1-888-241-2289 Local: 250-740-3200
Fax: [phone]
18
2.8 Change compressor oil
Follow all safety precautions.
2.8.1 Clean debris and dust from the area around the drain valve of
the oil/air separator tank to prevent contamination.
2.8.2 Insert a hose over the oil/air separator tank’s drain valve outlet
and open the valve to drain the oil into a container large
enough to hold at least 1-1/2 US Gallons (6 litres). After the oil
has drained, close the valve.