AC2-8E
AC1-8E, AC1-20E,
AC2-8E, AC2-20E
AIR COMPRESSORS
CAUTION
RISK OF INJURY! READ ENTIRE MANUAL BEFORE OPERATING!
THIS MANUAL IS AN IMPORTANT PART OF THE AIR
COMPRESSOR AND MUST REMAIN WITH THIS UNIT!
Portable Electric Air Compressor Manual 1
TABLE OF CONTENTS
INTRODUCTION ................................................................................................................ 3
IMPORTANT ..................................................................................................................
INSPECTION ......................................................................................................................3
IMPORTANT SAFETY INSTRUCTIONS .........................................................................4-7
RISK OF ELECTRIC SHOCK OR ELECTROCUTION ................................................
RISK OF EXPLOSION OR FIRE .................................................................................
RISK OF BURSTING ...................................................................................................
RISK TO BREATHING .................................................................................................
RISK OF BURNS .........................................................................................................
RISK OF FLYING OBJECTS .......................................................................................
RISK FROM MOVING PARTS .....................................................................................
RISK FROM NEGLIGENCE .........................................................................................7
RISK OF AIR COMPRESSOR DAMAGE ....................................................................
FEATURES DRAWINGS ...........................................................................................
FEATURES REVIEW .................................................................................................9 & 11
PREPARATION INSTRUCTIONS ....................................................................................
INITIAL SET-UP .........................................................................................................
LOCATION .................................................................................................................
ELECTRICAL .............................................................................................................
PRE-START CHECKLIST ..........................................................................................
OPERATING INSTRUCTIONS ........................................................................................
START-UP ..................................................................................................................
SHUTDOWN ..............................................................................................................
MAINTENANCE INSTRUCTIONS ................................................................................... 15
TROUBLESHOOTING ................................................................................................16-18
WARRANTY .....................................................................................................................
NOTES .........................................................................................................................20-21
8 & 10
13
13
13
13
13
14
14
14
19
3
4
5
5
6
6
6
7
7
2 Portable Electric Air Compressor Manual
INTRODUCTION
Congratulations on the purchase of your new Air Compressor! You can be assured your Air Compressor was
constructed with the highest level of precision and accuracy. Each component has been rigorously tested by
technicians to ensure the quality, endurance and performance of this air compressor.
This operator's manual was compiled for your benefit. By reading and following the simple safety, installation
and operation, maintenance and troubleshooting steps described in this manual, you will receive years of trouble
free operation from your new Air Compressor. The contents of this manual are based on the latest product
information available at the time of publication. The manufacturer reserves the right to make changes in price,
color, materials equipment, specifications or models at any time without notice.
IMPORTANT!
A "DANGER, WARNING or CAUTION" safety warning will be surrounded by a "SAFETY ALERT BOX".
This box is used to designate and emphasize Safety Warnings that must be followed when operating this
air compressor. Accompanying the safety warnings are "Signal Words" which designate the degree or
level of hazard seriousness. The "Signal Words" used in this manual are as follows:
DANGER: Indicates an imminently hazardous situation which, if not avoided,
WILL result in death or serious injury.
WARNING: Indicates a potentially hazardous situation which, if not avoided,
COULD result in death or serious injury.
CAUTION: Indicates a potentially hazardous situation which, if not avoided
MAY result in minor or moderate injury or damage to the air
compressor.
The symbols set to the left of this paragraph are "Safety Alert Symbols". These
symbols are used to call attention to items or procedures that could be dangerous
to you or other persons using this equipment.
ALWAYS PROVIDE A COPY OF THIS MANUAL TO ANYONE USING THIS EQUIPMENT. READ ALL
INSTRUCTIONS IN THIS MANUAL AND ANY INSTRUCTIONS SUPPLIED BY MANUFACTURERS OF
SUPPORTING EQUIPMENT BEFORE OPERATING THIS AIR COMPRESSOR AND ESPECIALLY POINT
OUT THE "SAFETY WARNINGS" TO PREVENT THE POSSIBILITY OF PERSONAL INJURY TO THE
OPERATOR.
Once the unit has been uncrated, immediately write in the serial number of your unit in the space provided
below.
SERIAL NUMBER_________________________________
Inspect for signs of obvious or concealed freight damage. If damage does exist, file a claim with the transportation
company immediately. Be sure that all damaged parts are replaced an that the mechanical and electrical problems
are corrected prior to operation of the unit. If you require service, contact your Customer Service.
Mi-T-M® Corporation, 8650 Enterprise Drive, Peosta, IA 52068
1-877-JD-KLEEN / (1-877-535-5336) Fax 563-556-1235
Monday - Friday 8:00 a.m. - 5:00 p.m. CST
1. Model Number
2. Serial Number
3. Date and Place of Purchase
Please have the following information available for all service calls:
Portable Electric Air Compressor Manual 3
IMPORTANT SAFETY INSTRUCTIONS
WARNING: When using this product, basic precautions should always be observed, including the following:
READ ALL SAFETY INSTRUCTIONS BEFORE USING AIR COMPRESSOR
HAZARD
RISK OF
ELECTRIC SHOCK
OR
ELECTROCUTION
POTENTIAL CONSEQUENCE
Serious injury or death could
occur if the air compressor is
not properly grounded. Your
air compressor is powered by
electricity and may cause electric
shock or electrocution if not used
properly.
PREVENTION
Make sure the air compressor is
plugged into a properly grounded
outlet which provides correct
voltage and adequate fuse
protection. Disconnect when not
in use.
Electrical shock may occur from
electrical cord.
Electrical shock may occur if
air compressor is not operated
properly.
Serious injury or death may occur
if electrical repairs are attempted
by unqualified persons.
Check power cord for signs of
crushing, cutting or heat damage.
Replace faulty cord before use.
Keep all connections dry and off
the ground. Do not allow electrical
cords to lay in water or in such a
position where water could come
in contact with them. Do not touch
plug with wet hands.
Do not pull on the electrical cord to
disconnect from the outlet.
Never operate air compressor in
wet conditions or outdoors when it
is raining.
Never operate air compressor with
safety guards/covers removed or
damaged.
Any electrical wiring or repairs
performed on this air compressor
should be done by Authorized
Service Personnel in accordance
with National and Local electrical
codes.
Before opening any electrical
enclosure, always shut off the
air compressor, relieve pressure
and unplug the air compressor
from the power source. Allow air
compressor to cool down. Never
assume the air compressor is safe
to work on just because it is not
operating. It could restart at any
time! Service in a clean, dry, flat
area.
4 Portable Electric Air Compressor Manual
IMPORTANT SAFETY INSTRUCTIONS
READ ALL SAFETY INSTRUCTIONS BEFORE USING AIR COMPRESSOR
HAZARD
RISK OF
EXPLOSION OR FIRE
POTENTIAL CONSEQUENCE
Serious injury or death may occur
from normal electrical sparks in
motor and pressure switch
Serious injury may occur if any air
compressor ventilation openings
are restricted, causing the air
compressor to overheat and start
a fire.
PREVENTION
Always operate air compressor
in a well ventilated area free of
flammable vapors, combustible
dust, gases or other combustible
materials.
DO NOT SMOKE if spraying
flammable material. Locate the air
compressor at least 20 feet away
from the spray area. (An additional
hose may be required.)
Never place objects against or on
top of air compressor. Operate air
compressor at least 12 inches away
from any wall or obstruction that
would restrict proper ventilation.
RISK OF
BURSTING
Serious injury or death may occur
from an air tank explosion if air
tanks are not properly maintained.
Serious injury may occur from
an air compressor malfunction or
exploding accessories if incorrect
system components, attachments
or accessories are used.
Drain air tank daily or after each use
to prevent moisture buildup in the air
tank.
If air tank develops a leak, replace
the air tank immediately. Never
repair, weld or make modifications to
the air tank or its attachments. Use
only genuine Manufacturer repair
parts for your air compressor.
Never make adjustments to the
factory set pressures.
Never exceed manufacturers
maximum allowable pressure rating
of attachments.
Because of extreme heat, do not
use plastic pipe or lead tin soldered
joints for a discharge line.
Never use air compressor to inflate
small, low pressure objects such as
toys.
Portable Electric Air Compressor Manual 5
IMPORTANT SAFETY INSTRUCTIONS
READ ALL SAFETY INSTRUCTIONS BEFORE USING AIR COMPRESSOR
HAZARD
RISK TO
BREATHING
POTENTIAL CONSEQUENCE
Serious injury or death could occur
from inhaling compressed air. The
air stream may contain carbon
monoxide, toxic vapors or solid
particles.
Never inhale air from the air
compressor either directly or from
a breathing device connected to
the air compressor.
PREVENTION
RISK
OF BURNS
RISK
OF FLYING OBJECTS
Sprayed materials such as paint,
paint solvents, paint remover,
insecticides, weed killers, etc.
contain harmful vapors and
poisons.
Serious injury could occur
from touching exposed metal
parts. These areas can remain
hot for some time after the air
compressor is shutdown.
Soft tissue damage can occur
from the compressed air stream.
Operate air compressor only in
a well ventilated area. Follow all
safety instructions provided with
the materials you are spraying.
Use of a respirator may be
required when working with some
materials.
Never allow any part of your body
or other materials to make contact
with any exposed metal parts on
the air compressor.
Always wear safety glasses to
shield the eyes from flying debris.
Never point the air stream at any
part of your body, anyone else or
animals.
Never leave pressurized air in
the air compressor. Shut off air
compressor and relieve pressure
when storing or attempting
maintenance.
Serious injury can occur from
loose debris being propelled at a
high speed from the compressed
air stream.
6 Portable Electric Air Compressor Manual
Always maintain a safe distance
from people and animals while
operating the air compressor.
Do not move the air compressor
while air tank is under pressure.
Do not attempt to move the air
compressor by pulling on the
hose.
READ ALL SAFETY INSTRUCTIONS BEFORE USING AIR COMPRESSOR
HAZARD
RISK FROM
MOVING PARTS
IMPORTANT SAFETY INSTRUCTIONS
POTENTIAL CONSEQUENCE
Risk of bodily injury from moving
parts. This air compressor cycles
automatically when the pressure
switch is in the "On/Auto" position.
Before performing maintenance,
always turn off air compressor.
Bleed pressure from the air
hose and unplug electrical cord
from outlet. All repairs to the air
compressor should be made by an
Authorized Service person. Never
assume the air compressor is safe
to work on just because it is not
operating. It could restart at any
time!
Do not operate without protective
covers/guards. Always unplug the
air compressor before removing
any guard. Replace damaged
covers/guards before using the air
compressor.
PREVENTION
RISK FROM
NEGLIGENCE
RISK
OF AIR COMPRESSOR
DAMAGE
Risk of injury from negligent use.
Risk of major repair.
Never allow children or
adolescents to operate this air
compressor!
Stay alert-watch what you are
doing. Do not operate the air
compressor when fatigued or
under the influence of alcohol or
drugs.
Know how to stop the air
compressor. Be thoroughly
familiar with controls.
Do not operate air compressor
without an air filter.
Do not operate air compressor in a
corrosive environment.
Always operate the air compressor
in a stable, secure position to
prevent air compressor from
falling.
Follow all maintenance
instructions listed in this manual.
! SAVE THESE INSTRUCTIONS !
Portable Electric Air Compressor Manual 7
ELECTRIC AIR COMPRESSOR FEATURES
(SINGLE STAGE)
AC1-PE15-FEATURE 8 GAL.-041205-DLG
1. Decal- Danger/Warning/Caution
2. Outlet Fitting
3. Decal- Warning: Hot Surface
4. Tank Drain Valve
5. Pump Oil Drain
6. Check Valve
7. Air Compressor Pump
8. Pump Oil Fill Port
9. Thermal Overload
10. Electric Motor
11. Pump Discharge Line
12. Beltguard
13. Decal- Warning: Risk of Injury
14. Decal- Warning: Beltguard in Place
15. Air Filter
16. Ventilation Holes
17. Pressure Switch
18. Pressure Relief Valve
19. Pressure Gauge- Tank PSI
20. Pressure Gauge- Outlet PSI
21. Pressure Regulator
22. Electric Power Cord
AC1-PE15-20 FEATURES-041205-DLG
8 Portable Electric Air Compressor Manual
EXPLODED VIEW & EXPLANATION OF AIR COMPRESSOR FEATURES
SAFETY RELIEF VALVE: This valve is designed to prevent system failures by reliev-
ing pressure from the system when the compressed air reaches a predetermined level.
The valve is preset by the manufacturer and must not be modified in any way. To verify
the valve is working properly, pull on the ring. Air pressure should escape. When the
ring is released, it will reset.
MOTOR/PRESSURE SWITCH: This switch is used to start or stop the air compressor.
Moving the switch to the "Auto" (On) position will provide automatic power to the pressure switch which will allow the motor to start when the air tank pressure is below the
factory set "cut-in" pressure. When in the Start/Stop Option, the pressure switch stops
the motor when the air tank pressure reaches the factory set "cut-out" pressure. For
safety purposes, this switch also has a pressure release valve located on the side of the
switch designed to automatically release compressed air from the air compressor pump
head and its discharge line when the air compressor reaches "cut-out" pressure or is
shut off. This allows the motor to restart freely. Moving the switch to the "Off" position
will remove power from the pressure switch and stop the air compressor.
MOTOR THERMAL OVERLOAD: The electric motor has a manual thermal overload
protector. If the motor overheats for any reason, the thermal overload will cut off power,
thus preventing the motor from being damaged. Wait until the motor is cool before
pressing the thermal overload button to reset and begin working again.
AIR INTAKE FILTER: This filter is designed to clean air coming into the pump. To
ensure the pump continually receives a clean, cool, dry air supply this filter must always
be clean and ventilation opening free from obstructions. Replace filter element when
necessary.
OIL FILL PORT/VENT: Pour oil into the Oil Fill Port/Vent when required.
OIL SIGHT GLASS: The Oil Sight Glass displays the oil level in the pump. The oil
level should be at the center of the Oil Sight Glass. If low, add SAE 30W non-detergent
oil.
AIR COMPRESSOR PUMP: To compress air, the pistons move up and down in the
cylinders. On the downstroke, air is drawn in through the air intake valves while the
exhaust valves remain closed. On the upstroke, air is compressed, the intake valves
close and compressed air is forced out through the exhaust valves, into the discharge
line, through the check valve and/or the pilot valve and into the air tank.
AIR TANK PRESSURE GAUGE: The air tank pressure gauge indicates the reserve
air pressure in the air tank (s).
AIR TANK DRAIN VALVE: The drain valve is used to remove moisture from the air
tank(s) after the air compressor is shut off. NEVER attempt to open the drain valve
when more than 10 PSI of air pressure is in the air tank! To open the drain valve,
turn the knob counterclockwise.
OPTIONAL PRESSURE REGULATOR: The air pressure coming from the air tank is
controlled by the regulator knob. Turn the pressure regulation knob clockwise to increase
discharge pressure, and counterclockwise to decrease discharge pressure.
OPTIONAL OUTLET PRESSURE GAUGE: The outlet pressure gauge indicates the
air pressure available at the outlet side of the regulator. This pressure is controlled by
the regulator and is always less or equal to the air tank pressure.
OPTIONAL PILOT VALVE: When the adjusting knob is turned completely clockwise to
the fully closed position, the air compressor operates in the Start/Stop position. When
the adjusting knob is turned completely counterclockwise to the fully open position, the
air compressor operates in the constant run position.
Portable Electric Air Compressor Manual 9
ELECTRIC AIR COMPRESSOR FEATURES
(TWO STAGE)
AS2-PE05-08 FEATURES-122704-DLG
AC2-PE05-08G-FEATURE-122700-EDW
1. Beltguard
2. Decal- Warning: Risk of Injury
3. Decal- Warning: Beltguard in Place
4. Air Intake Filter
5. Air Compressor Pump
6. Ventalation Openings
7. Air Tank Pressure Guage
8. Pressure Regulator
9. Outlet Fitting
10. Air Tank Drain Valve (s)
11. Outlet Pressure Guage
12. Motor/Pressure Switch
13. Safety Relief Valve
14. Decal- Warning: Hot
15. Decal- Danger/Warning/Caution
16. Pump Oil Drain
17. Oil Sight Glass
18. Oil Fill Port Vent
19. Pilot Valve (Optional)
20. Check Valve
21. Pump Discharge Line
22. Electric Power Cord
23. Motor Thermal Overload
24. Electric Motor
AC2-PE05-20G-FEATURE-122700-EDW
10 Portable Electric Air Compressor Manual
EXPLODED VIEW & EXPLANATION OF AIR COMPRESSOR FEATURES
SAFETY RELIEF VALVE: This valve is designed to prevent system failures by reliev-
ing pressure from the system when the compressed air reaches a predetermined level.
The valve is preset by the manufacturer and must not be modified in any way. To verify
the valve is working properly, pull on the ring. Air pressure should escape. When the
ring is released, it will reset.
MOTOR/PRESSURE SWITCH: This switch is used to start or stop the air compressor.
Moving the switch to the "Auto" (On) position will provide automatic power to the pressure switch which will allow the motor to start when the air tank pressure is below the
factory set "cut-in" pressure. When in the Start/Stop Option, the pressure switch stops
the motor when the air tank pressure reaches the factor set "cut-out" pressure. For
safety purposes, this switch also has a pressure release valve located on the side of the
switch designed to automatically release compressed air from the air compressor pump
head and its discharge line when the air compressor reaches "cut-out" pressure or is
shut off. This allows the motor to restart freely. Moving the switch to the "Off" position
will remove power from the pressure switch and stop the air compressor.
MOTOR THERMAL OVERLOAD: The electric motor has a manual thermal overload
protector. If the motor overheats for any reason, the thermal overload will cut off power,
thus preventing the motor from being damaged. Wait until the motor is cool before
pressing the thermal overload button to reset and begin working again.
AIR INTAKE FILTER: This filter is designed to clean air coming into the pump. To
ensure the pump continually receives a clean, cool, dry air supply this filter must always
be clean and ventilation opening free from obstructions. Replace filter element when
necessary.
OIL FILL PORT/VENT: Pour oil into the Oil Fill Port/Vent when required.
OIL SIGHT GLASS: The Oil Sight Glass displays the oil level in the pump. The oil
level should be at the center of the Oil Sight Glass. If low, add SAE 30W non-detergent
oil.
AIR COMPRESSOR PUMP: A two stage compressor pump uses two different size
cylinders with the intake valve of the second smaller cylinder linked to the exhaust valve
of the first larger cylinder. On the down stroke of the large cylinder, air is drawn through
the intake valve while the exhaust valve remains closed. On the upstroke, air is compressed, the intake valve closes and compressed air is forced out through the exhaust
valve, into the inter cooler and through the intake valve of the second smaller cylinder
on its down stroke. On the upstroke of the smaller cylinder, the intake valve closes and
the compressed air is compressed a second time and forced out the exhaust valve into
the discharge line, through the tank check valve and into the air tank.
AIR TANK PRESSURE GAUGE: The air tank pressure gauge indicates the reserve
air pressure in the air tank (s).
PRESSURE REGULATOR: The air pressure coming from the air tank is controlled by
the regulator knob. Turn the pressure regulation knob clockwise to increase discharge
pressure, and counterclockwise to decrease discharge pressure.
OUTLET PRESSURE GAUGE: The outlet pressure gauge indicates the air pressure
available at the outlet side of the regulator. This pressure is controlled by the regulator
and is always less or equal to the air tank pressure.
AIR TANK DRAIN VALVE: The drain valve is used to remove moisture from the air
tank(s) after the air compressor is shut off. NEVER attempt to open the drain valve
when more than 10 PSI of air pressure is in the air tank! To open the drain valve,
turn the knob counterclockwise.
PILOT VALVE OPTION: When the adjusting knob is turned completely clockwise to
the fully closed position, the air compressor operates in the Start/Stop position. When
the adjusting knob is turned completely counterclockwise to the fully open position, the
air compressor operates in the constant run position.
Portable Electric Air Compressor Manual 11
WARNING
THE FOLLOWING PAGES CONTAIN OPERATING AND
MAINTENANCE INSTRUCTIONS.
DO NOT ATTEMPT TO OPERATE THIS AIR COMPRESSOR
UNTIL YOU HAVE READ AND UNDERSTOOD ALL
SAFETY PRECAUTIONS AND INSTRUCTIONS
LISTED IN THIS MANUAL.
INCORRECT OPERATION OF THIS UNIT CAN CAUSE
SERIOUS INJURY!!
DO NOT ALTER OR MODIFY THIS EQUIPMENT
IN ANY MANNER!
12 Portable Electric Air Compressor Manual
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