BE AC138HEG2 User manual

user manual
8 GALLON WHEELED
COMPRESSOR/GENERATOR
AC138HEG2

2
table of contents
Introduction
4 Using the Operators Manual
Specications
4 Specications
Product Identication
5 Record Identication Numbers
Safety
6 Safety Instructions
7 Safety Rules
7 Hazard Symbols and Meanings
10 General Safety Information
Safety & Installation
11 Spraying Precautions
11 Hose Precautions
11 Installation and Location
11 Extension Cords
Generator Safety
12 Generator Safety
13 Grounding Instructions
Assembly Instructions
14 Assembly
Product Features
15 Automatic ON/OFF
15 Regulator
15 Tank Pressure Gauge
15 Safety Valve
15 Tank Drain Fitting
15 Safety Guard

3
table of contents
Operating Instructions
16 Initial Start Up
16 Start Up
16 Storage
16 Shut Down
Maintenance
17 Daily
17 Weekly
17 Monthly
17 Six Months or 250 Operating Hours
17 Oil Change
Troubleshooting
18 Troubleshooting Chart
Parts
19 Parts Diagram
20 Parts List

4
Using the Operator’s manual
Thank you for choosing our compressor. The manual gives information
regarding operation and maintenance of the Compressor. Be sure to
read it carefully before operation.
Following the manual can ensure the user’s safety and the best results
from the compressor. All information and diagrams in this manual are in
accordance with the newest products at the publishing time. We strive
for accuracy and this manual is accurate for the models described at the
time of printing. We reserve the right to make improvements or changes
at any time without notice or obligation.
Please keep this manual with the compressor at all times, even if
ownership of the compressor is transferred to someone else.
Attention: Completely read through the manual
prior to the initial use of your compressor.
introduction
Model # AC138HEG2
Engine Honda GX390
Watts w/ Compressor O 4000W
Watts w/ Compressor On 3500W
Max PSI 175
CFM @90 PSI 16.4
Receptacles 4x NEMA 5-15R

5
product identification
Congratulations on your purchase of a BE Power Equipment air
compressor. You can be confident that this machine is constructed and
tested with optimum performance and quality in mind.
Reading this manual will help get you the best results for set-up,
operation, maintenance and avoid personal injury or damage to your
machine. By knowing how best to operate this machine, you will be
better positioned to show others who may also operate the unit.
All the information in this manual is based on the latest product
information available at the time of printing. BE Power Equipment
reserves the right to make changes at any time without notice or
incurring any obligation.
Owner/Operator Responsibility
The owner/operator must have a thorough understanding of the
operation, maintenance and dangers associated with using this machine.
It must be understood that it is ultimately up to the owner/operator to
safely use this machine as outlined in this manual.
This manual is considered a part of the machine and needs to be kept
in a safe location. If the machine is resold or given to someone else, this
manual needs to be included.
Product Registration
Please register your product online to get the maximum benefit
from your warranty. Use the QR code below or register online at:
bepowerequipment.com/product-registration
It is recommended that you record the product identification numbers
in this manual. These numbers are important to have on hand if you
need to contact technical support (1-866-850-6662). The model and
serial number can be found on the box and on decal on the machine.
PRODUCT IDENTIFICATION
Model Number:
Serial Number:
Date of Purchase:
Dealer Name:

6
safety
Safety Instructions
1. Carefully read through the entire owners manual before operating
this compressor to ensure all safety precautions are adhered to.
2. After unpacking your new air compressor, please inspect it carefully
for any damage that may have occurred during transit.
3. Do not operate this air compressor if damaged during shipment,
handling, or misuse.
4. Damage may result in bursting, which can cause serious injury or
property damage.
5. All damaged parts must be repaired or replaced as needed prior ton
operating this air compressor.
6. Check to see that all nuts, bolts and ttings are secure.
7. Check to see that the engine oil level is within an acceptable range. If
it is too low, refer to the engine user manual for instruction on how to
add or change oil.
8. Inspect hoses and cords to ensure that they are unfrayed and in
good condition.
9. Please contact our customer service department at the numbers
listed on the back of this instruction manual for any questions or
comments regarding this air compressor.

7
The safety alert symbol ( ) is used with a signal word (DANGER,
CAUTION, WARNING), a pictorial and/or a safety message to alert you
to hazards.
DANGER indicates a hazard which, if not avoided, will result in death
or serious injury.
WARNING indicates a hazard which, if not avoided, could result in
death or serious injury.
CAUTION indicates a hazard which, if not avoided, might result in
minor or moderate injury.
NOTICE indicates a situation that could result in equipment damage.
Follow safety messages to avoid or reduce the risk of injury or death.
HAZARD SYMBOLS AND MEANINGS
Save these Instructions
SAFETY RULES
safety
This is the safety alert symbol. It is used to alert
you to potential personal injury hazards. Obey
all safety messages that follow this symbol to
avoid possible injury or death.
explosion
kickback
fall fluid injection moving parts read manual
hot surface wear eye
protection
slippery
fire electric shock toxic fumes

8
safety
WARNING
AIR TANK WARNING: Drain liquid from air tank daily,
or after each use, using the drain valve located on the
bottom of the lower air tank. Failure to properly drain
liquid from the tank will cause rust from moisture
buildup. This weakens the tank and could lead to a
violent tank explosion, Periodically inspect the tanks for
unsafe conditions such as corrosion.
Never attempt to repair or make modications to the tank or its
attachments. Welding, drilling, or any other modications may weaken
the tank, which may result in damage from rupture or explosion. Never
remove or attempt to adjust the pressure switch, safety valve, or other
factory set operating pressures.
WARNING
FIRE WARNING: Avoid dangerous environments.
Do not use the compressor near gasoline or other
ammable materials. Keep work area well lit. Normal
sparking of a motor or sparking from grinding metal
could ignite fumes. Do not spray ammable materials
in the vicinity of an open ame or other ignition source,
including the air compressor itself. Do not direct paint
or other spray material towards the compressor.
Read and follow all safely instructions for the material you are spraying.
Be sure to use an approved respirator designed for use with your
specic application.
WARNING
BREATHABLE AIR WARNING: This air compressor
is not designed, nor intended to produce breathable air.
Air produced by this unit may contain carbon monoxide
or other toxic vapors.
Do not inhale air from the compressor or from a breathing device
connected to it.

9
safety
WARNING
AIR TOOLS AND ACCESSORIES WARNING: Do
not exceed the pressure rating of any air tools, spray
guns, air accessories, or inatables. Excess pressure
can cause them to explode, resulting in serious injury.
Follow the manufacturers recommended pressure
settings for all air tools and air accessories.
WARNING
Do not direct compressed air stream at people or pets.
The powerful compressed air stream can damage
exposed skin and easily propel loose dirt or other small
objects. Always wear eye protection that meets
ANSI Z28.1 specications.
WARNING
Keep hands and ngers away from exposed metal parts
on a running air compressor. Air compressors generate
signicant heat during normal operation, which can
cause serious burns. The compressor will remain hot for
some time after operation and should not be touched or
moved until cool.

10
safety
GENERAL SAFETY INFORMATION
Do not operate unit if damaged during shipping, handling or use. Damage
may result in bursting and cause injury or property damage.
Since the air compressor and other components (lters, lubricators,
hoses, etc.) used, make up a high pressure pumping system, the
following safety precautions must be observed at all times:
1. Read all manuals included with this product carefully. Be thoroughly
familiar with the controls and the proper use of the equipment.
2. Follow all local electrical and safety codes
3. Only persons well acquainted with these rules of safe operation
should be allowed to use the compressor.
4. Keep visitors away and do not allow children in the work area.
5. Wear safety glasses and use hearing protection when operating the
pump or unit.
6. Do not stand on or use any part of the unit as a handhold.
7. Before each use, inspect the compressor system and electrical
components for signs of damage, deterioration, weakness, or
leakage. Repair or replace defective items before using.
8. Check all fasteners at frequent intervals and tighten if needed.
9. Keep ngers away from a running compressor; fast moving and hot
parts will cause injury and/or burns.
10. If the equipment starts to vibrate in an abnormal manner, STOP
the engine/motor and check immediately for the cause. Vibration is
generally a warning of trouble.
11. To reduce the risk of re, keep engine/motor exterior free of
oil, solvent, or excessive grease. Never remove or attempt to
adjust safety valve. Keep safety valve free from paint and other
accumulations.
12. Never attempt to repair or modify a tank. Welding, drilling or any other
modication will weaken the tank resulting in damage from rupture or
explosion. Always replace worn or damaged tanks. Drain liquid from
tank daily.
13. Tanks rust from moisture build-up, which weakens the tank. Make
sure to drain tank daily and inspect periodically for unsafe conditions
such as rust formation and corrosion.
14. Fast moving air will stir up dust and debris which may be harmful.
Release air slowly when draining moisture or depressurizing the
compressor system.
15. Do not attempt to open/drain the air tank when it contains more than
10 PSI of pressure. Remove excess pressure with an air tool before
opening the drain valve.
16. Ensure that nothing is plugged in to the generator before turning the
engine on.

11
safety
WARNING
Do not spray ammable materials in vicinity of open
ame or near ignition sources including the compressor
unit.
SPRAYING PRECAUTIONS
17. Do not smoke when spraying paint, insecticides, or other ammable
substances.
18. Use a face mask/respirator when spraying and spray in a well
ventilated area to prevent health and re hazards.
19. Do not direct paint or other sprayed material at the compressor.
Locate compressor as far away from the spraying area as possible to
minimize overspray accumulation on the compressor.
20. When spraying or cleaning with solvents or toxic chemicals, follow
the instructions provided by the chemical manufacturer.
HOSE PRECAUTIONS
21. Inspect hose before use. Do not exceed working pressure marked
on hose. Do not twist, bend knot, or abrade hose. Do not wrap hose
around body.
22. Keep away from hot surfaces and chemicals.
Installation
INSTALLATION AND LOCATION
The compressor must be used on a stable level surface. The air compres-
sor must be used in a clean and well-ventilated area. The compressor
requires an unobstructed airow and must be located a minimum of 18
inches from any walls or other obstructions.
Extension Cord Length Wire Size (A.W.C.)
Up to 25 Feet 14
26 to 50 Feet 12
51 to 100 Feet 10

12
generator safety
This unit is equipped with a grounding terminal for your protection.
Always complete the ground path from the unit to an external ground
source as instructed in the following page.
The unit is a potential source of electrical shock if not kept dry. Keep
the unit dry and do not use in rain or wet conditions. To protect from
moisture, operate it on a dry surface under an open, canopy-like
structure. Dry your hands if wet before touching the unit.
Plug appliances directly into the unit. Or, use a heavy duty, outdoor-rated
extension cord that is rated (in watts or amps) at least equal to the sum of
the connected appliance loads. Check that the entire cord is free of cuts
or tears and that the plug has all three prongs, especially a grounding pin.
NEVER try to power house wiring by plugging the unit into a wall outlet,
a practice known as “back feeding”. This is an extremely dangerous
practice that presents an electrocution risk to utility workers and
neighbors served by the same utility transformer. It also bypasses some
of the built-in household circuit protection devices.
If you must connect the unit to the house wiring to power appliances,
have a qualied electrician install the appropriate equipment in
accordance with local electrical codes. Or, check with your utility
company to see if it can install an appropriate power transfer switch.
For power outages, permanently installed stationary units are better
suited for providing backup power to the home. Even a properly
connected portable unit can become overloaded. This may result in
overheating or stressing the unit components, possibly leading to a unit
failure.

13
grounding instructions
This product must be grounded. Should a malfunction occur,
grounding provides the path of least resistance for the electric
current, reducing the risk of electrocution.
The screw and ground terminal on the frame must always be used to
connect the unit to a suitable ground source. The ground path should
be made with #8 size wire. Connect the terminal of the ground wire
between the star washers and screw then tighten the screw fully.
Connect the other end of the wire securely to a suitable ground source.
The National Electric Code contains several practical ways in which to
establish a good ground source. Examples given below illustrate a few of
the ways in which a good ground source may be established.
A metal underground water pipe in direct contact with the earth for at
least 10 feet can be used as a grounding source. If a pipe is unavailable,
an 8 foot length of pipe or rod may be used as the ground source. The
pipe should be 3/4 inch trade size or larger and the outer surface must
be noncorrosive. If a steel or iron rod is used it should be at least 5/8
inch diameter and if a nonferrous rod is used
it should be at least 1/2 inch diameter and be listed as material for
grounding.
Drive the rod or pipe to a depth of 8 feet. If a rock bottom is encountered
less than 4 feet down, bury the rod or pipe in a trench. All electrical tools
and appliances operated from this unit, must be properly grounded by
use of a third wire or be“Double Insulated”.
It is recommended to:
1. Use electrical devices with 3 prong power cords.
2. Use an extension cord with a 3 hole receptacle and a 3 prong
plug at the opposite ends to ensure continuity of the ground
protection from the unit to appliance.
We strongly recommend that all applicable federal, state and local
regulations relating to grounding specications be checked and adhered
to.

14
assembly instructions
WARNING
The compressor is shipped without oil in the crankcase.
Add oil as indicated below.
Assembly
Read all safety instructions before using air compressor.
1. After opening the carton, please remove all parts and check
against photograph on carton. If any parts are missing, please call
1-866-850-6662.
2. Place air compressor on a at, level surface.
3. Pour supplied oil into crankcase until the oil level reaches the red dot
in the oil level sight glass. Be careful not to overll.
Rell Oil
Immediately
Check Oil
Level Daily
Oil Level OK
NOTICE
Do not operate the compressor without lubricant or with low lubricant
level. We are not responsible for damage caused to the compressor
due to operation without proper lubrication.
4. Adjust tension of belt to ensure that a maximum of 1/2” / 12mm
of slack exists when pressure is placed on belt at centre line.
NOTE: If the belt is too tight, overloading of the motor will occur. This
will cause the motor to overheat. If the belt is installed too loose, it
will slip and unstable operation and vibration will occur. Caution -
The rotating direction for the ywheel must follow the arrow shown
on the belt guard.
5. Close the tank drain valve on the bottom of the air tank by turning the
valve clockwise until it’s fully closed.
6. Attach the air coupler to the compressor regulator valve. Use Teon
thread-sealing tape on the threads to make sure you have an airtight
connection. Do not over tighten ttings.
7. Attach the supplied air lter to the air intake port on the pump head.
8. Attach air hose and any desired air accessories (which are not
included). Use Teon thread-sealing tape on the threads to make
sure you have an airtight connection. Do not over tighten ttings.
1/2”

15
Product Features
1. Automatic ON/OFF Pressure Switch
The compressor is equipped with an automatic on/o pressure switch.
The compressor will only run when the switch is in the “I”(ON) position.
Once the tank has reached the desired preset pressure (see Operation
Instructions), the pump will automatically shut o. While the switch is
in the“I”(ON) position, the pump will automatically turn back on once
the pressure in the tank drops below the minimum preset pressure. Do
not leave the compressor unattended while the power switch is in the
“I”(ON) position.
2. Regulator
The regulator allows you to select the amount of air pressure that is
output through the air hose into tools and accessories. Refer to the air
delivery requirements of your tools for the proper pressure settings.
3. Tank Pressure Gauge
The tank pressure gauge provides a reading of the air pressure inside
of the compressor tank.
4. Safety Valve
This compressor is equipped with a safely valve switch that will engage
when the pressure in the tank exceeds the maximum rated pressure.
DO NOT attempt to modify or remove safely valve.
5. Tank Drain Fitting
Water is produced whenever air is compressed. It is critical to drain
water from the air tank on this compressor frequently. If unit is used
only occasionally, tank should be drained after each use and prior to
the next use. To drain the tank, slowly open the tank drain tting by
turning clockwise. Once all water has drained out, close the tting
securely. NOTE: tank will not pressurize while tting is open.
6. Safety Guard
The belt drive mechanism is protected by a metal guard. Do not
attempt to modify or remove this safety guard.
product features

16
operation
Operating Instructions
Initial Start Up
1. Disconnect tools and/or accessories from the air hose and generator
power outlets.
2. Open the tank drain valve to allow air to escape. This helps prevent air
pressure buildup in the air tank.
3. Check to see that the belt is installed properly with the correct tension.
4. Flip the pilot valve to the upright position. This provides a loadless start.
5. Run the compressor for at least 2 minutes in this no-load position to
lubricate the bearings and piston.
6. Turn o compressor, drain liquid from tanks and close drain valve.
Start Up
1. Slowly open tank drain by turning clockwise. Allow any water in tank to
drain out. Close tting securely.
2. Before starting the compressor, check for broken components and
accessories, and check for damage to the hose.
3. Make sure the power switch on the engine is turned to the “O”(OFF)
position.
4. Attach desired tool to the end of the air hose and plug in any items you
wish to power to the generator
5. Turn the ON/OFF switch to the“I”(ON) position.
6. Adjust regulator knob to desired pressure level once the pump has shut o
and the compressor has stopped running.
Storage
1. Disconnect tools and/or accessories from the air hose and unplug all
cords from the generator.
2. Locate drain valve on bottom side of tank.
3. Open drain valve to release remaining pressurized air and moisture from
the air tank. Moisture buildup in the tank is normal with air compressors, so
a small amount of water may come out while draining the tank. Draining the
tank is vital for longevity and safety of your air compressor.
4. Close valve and store the compressor in a cool, dry place.
Shut Down
1. Turn the ON/OFF switch to the OFF position.
2. Rotate the pressure regulator knob counterclockwise until it is fully closed.
Check regulated pressure gauge to ensure that it reads 0 PSI.
3. Remove air hose and other connected accessories.
4. Slowly open air tank drain valve to release remaining pressurized air, and
tilt unit to fully drain accumulated liquid from air tanks. A small amount of
moisture build-up in the tank is normal. Draining the tank is vital for the
longevity and safely of your air compressor.
5. Close drain valve.
6. Allow compressor to cool down and disconnect all items from the air
hoses and generator receptacles.
maintenance

17
maintenance
Maintenance
When performing any maintenance or service
· The air compressor must be turned o.
· Drain tanks.
· Allow compressor to cool down.
· Disconnect all air hoses and unplug all items from the generator.
Daily
· Check oil level.
· Drain accumulated liquid from tanks.
· Check for oil leaks.
· Check for unusual noise and/or vibrations
· Check that all fasteners are secure.
Weekly
· Check safety relief valve.
· Inspect and clean air lter.
· Clean breather holes on oil check dipstick.
Monthly
· Check for air leaks.
· Apply a solution of soapy water around joints.
· Look for air bubbles around joints when compressor reaches the
pressure cut-out limit and pump turns o.
· Adjust belt tension and replace if worn or damaged.
Six Months or 250 Operating Hours
· Change compressor oil.
· Use only SAE 20 or SAE 30 weight non-detergent oil.
· Replace oil more frequently when used in dusty operating
environments.
Oil Change
1. Place oil drain pan below oil drain plug. This is located just below the
oil dipstick. See engine manual for precise location.
2. Remove dipstick to allow air to enter crankcase.
3. Remove oil drain plug.
4. Allow oil to drain completely.
5. Clean and replace oil drain plug.
6. Rell crankcase with SAE 20 or SAE 30 weight non-detergent oil to
red dot on oil level sight glass. Be careful not to overll.

18
troubleshooting
Problem Possible Cause Corrective Action
Unit not Starting Gas engine not running Check gas level, oil level, and switches on
engine.
Low pressure Air leak in safety valve Check valve manually by
pulling upward on rings. If
condition persists, replace
valve.
Loose tube or ttings Tighten ttings by hand
Restricted air lter Clean or replace
Loose Belt Adjust belt tension
Defective check valve Replace check valve
Safety valve releasing Defective pressure switch
or improper adjustment
Check for proper
adjustment. If problem
persists, replace pressure
switch.
Oil discharge in air Improper oil viscosity Replace oil with 20-30
weight non-detergent oil
Too much oil in crankcase Drain crankcase and ll to
proper level
Restricted air lter Clean or replace lter
Worn piston rings Replace piston rings
Excessive belt wear Belt too loose Adjust for proper tension
Belt too tight Adjust for proper tension
Motor pulley out of alignment Align motor pulley by
adjusting the position of the
electric motor
Compressor
parts
Problem Possible Cause Corrective Action
Low Voltage Engine Speed is too low
Generator is overloaded
Replace or repair engine throttle
Reduce load on generator by unplugging
components
Circuit Breaker Trips Defective load connected to generator
Defective Receptacle
Generator is overloaded
Disconnect load
Replace the receptacle
Reduce load on generator
Voltage is too high Engine speed is too high Reduce engine speed
Unit is over-heating Generator is overloaded
Insucient Ventilation
Reduce generator load
Improve air ow in your workspace
No power output Disconnect Load
Broken or loose wire
Defective receptacle
Defective stator
Defective rotor
Defective capcitor
Circuit breaker tripped
Disconnect load
For any defective components, have the
generator inspected by a certied technician
Reset the circuit breaker
Generator

19
parts

20
parts
REF # DESCRIPTION PART # QTY
1 Check Oil Decal N/A 2
2 Risk of Burns Decal N /A 1
3 Risk of Fire Decal N/A 1
4 Engine (Honda GX390) 10086 1
5Key 430078 1
6 Electrocution Warning Decal N/A 1
7 Grounding Decal N/A 1
8 Generator 320872 1
9 Locknut 300159 8
10 Flatwasher 280023 20
11 Bolt 270121 8
12 115V Decal N/A 2
13 Bolt 270067 1
14 Washer 280022 5
15 Locknut 300157 7
16 Elbow 230418 3
17 Hose Clamp 420011 4
18 Hose 150007 1
19 Data Plate Decal N/A 1
20 Washer 280008 6
21 Collar 330351 2
22 Wheel 140006 2
23 Branding Decal 340828 2
24 Bolt 270019 4
25 Risk of Burns Decal N /A 2
26 Operation Decal N/A 1
27 Bolt 270068 4
28 Isolator 140008 2
29 Washer 280003 6
30 Petcocks 230312 2
31 Tank Drain Decal N/A 2
32 Elbow 240006 1
33 Pilot Valve 220270 1
34 Plug 240082 3
35 Handle Grip 70059 2
36 Hose 150007 1
37 Bolt 270576 2
38 Bracket Tightener 200812A01 1
39 Beltguard Back Assembly 60102A01 1