Central Pneumatic 67708 Owner Manual

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Central Pneumatic 67708 Owner Manual | Manualzz
2-1/2 HP 10 Gallon
125 PSI Air compressor
Model 67708
Set up and Operating Instructions
Visit our website at: http://www.harborfreight.com
Read this material before using this product.
Failure to do so can result in serious injury.
Save this manual.
Copyright© 2010 by Harbor Freight Tools®. All rights reserved. No portion of this manual or any artwork
contained herein may be reproduced in any shape or form without the express written consent of
Harbor Freight Tools. Diagrams within this manual may not be drawn proportionally. Due to continuing
improvements, actual product may differ slightly from the product described herein. Tools required for
assembly and service may not be included.
For technical questions or replacement parts, please call 1-800-444-3353.
Manual Revised 11b
Contents
Parts List��������������������������������������18
ASSEMBLY DIAGRAM���������������������19
Important SAFETY
Information���������������������������������3 Limited 1 year / 90 day
General Compressor Safety
Warranty�����������������������������������20
Warnings������������������������������������������� 3
Air Compressor Safety
Warnings������������������������������������������� 4
Grounding��������������������������������������6
110-120 V~ Grounded
Compressors: Compressors
with Three Prong Plugs������������ 6
Symbology������������������������������������������ 7
Specifications�������������������������������8
Unpacking���������������������������������������8
Instructions for putting
into use�����������������������������������������8
Functions�������������������������������������������� 8
Assembly/Mounting������������������������� 9
Checking the Oil����������������������������� 10
General Operating
Instructions����������������������������� 11
Compressor Area Set Up�������������11
General Operation������������������������11
Emergency Depressurization�� 12
Automatic Shut off System������� 12
Maintenance And Servicing���13
Cleaning, Maintenance, and
Lubrication������������������������������������ 13
Maintenance Schedule���������������� 13
Oil Maintenance������������������������������ 14
Draining Moisture from the
Tank��������������������������������������������������� 14
Air Filter Maintenance���������������� 14
Troubleshooting��������������������������� 15
Page 2
For technical questions, please call 1-800-444-3353.
SKU 67708
NOTICE is used to
address practices not
related to personal injury.
Save This Manual
Keep this manual for the safety warnings
and precautions, assembly, operating,
inspection, maintenance and cleaning
procedures. Write the product’s serial number
in the back of the manual near the assembly
diagram (or month and year of purchase if
product has no number). Keep this manual
and the receipt in a safe and dry place for
future reference.
CAUTION, without the
safety alert symbol, is
used to address practices not
related to personal injury.
General Compressor Safety
Warnings
WARNING Read all safety warnings
and instructions. Failure to follow
the warnings and instructions may
result in electric shock, fire and/or
serious injury.
Save all warnings and instructions
for future reference.
Important SAFETY
Information
In this manual, on the labeling, and
all other information provided with
this product:
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.
DANGER indicates a
hazardous situation
which, if not avoided, will result
in death or serious injury.
WARNING indicates a
hazardous situation
which, if not avoided, could
result in death or serious injury.
CAUTION, used with
the safety alert
symbol, indicates a hazardous
situation which, if not avoided,
could result in minor or moderate
injury.
1.
Work area safety
a.Keep work area clean and well lit.
Cluttered or dark areas invite accidents.
b.Do not operate the Compressor in
explosive atmospheres, such as in
the presence of flammable liquids,
gases or dust. Compressor motors
produce sparks which may ignite the
dust or fumes.
c.Keep children and bystanders away
from an operating compressor.
2.
Electrical safety
a.Compressor plugs must match the
outlet. Never modify the plug in
any way. Do not use any adapter
plugs with grounded compressors.
Standard plugs and matching outlets
will reduce risk of electric shock.
b.Do not expose compressor to rain
or wet conditions. Water entering
a compressor will increase the risk of
electric shock.
c.Do not abuse the cord. Never
use the cord for unplugging the
SKU 67708
For technical questions, please call 1-800-444-3353.
Page 3
instructions for lubricating and
changing accessories. Keep dry,
clean and free from oil and grease.
Check for misalignment or binding
of moving parts, breakage of parts
and any other condition that may
affect the compressor’s operation.
If damaged, have the compressor
repaired before use. Many accidents
are caused by a poorly maintained
compressor.
compressor. Keep cord away from
heat, oil, sharp edges or moving
parts. Damaged or entangled cords
increase the risk of electric shock.
3.
Personal safety
a.Stay alert, watch what you are
doing and use common sense when
operating this compressor. Do
not use this compressor while you
are tired or under the influence of
drugs, alcohol or medication. A
moment of inattention while operating
a compressor may result in serious
personal injury.
e.Use the compressor in accordance
with these instructions, taking into
account the working conditions and
the work to be performed. Use of
the compressor for operations different
from those intended could result in a
hazardous situation.
b.Use personal protective equipment.
Always wear ANSI-approved eye
protection during setup and use.
c.Prevent unintentional starting.
Ensure the switch is in the offposition before connecting to power
source or moving the compressor.
4.
5.
a.Have your compressor serviced by
a qualified repair person using only
identical replacement parts. This will
ensure that the safety of the compressor
is maintained.
Compressor use and care
a.Do not use the compressor if the
switch does not turn it on and
off. Any compressor that cannot be
controlled with the switch is dangerous
and must be repaired.
Air Compressor Safety Warnings
1.
Risk of fire or explosion - do not
spray flammable liquid in a confined
area or towards a hot surface. Spray
area must be well-ventilated. Do not
smoke while spraying or spray where
spark or flame is present. Arcing
parts - keep compressor at least 20
feet away from explosive vapors,
such as when spraying with a spray
gun.
2.
Risk of bursting - do not adjust
regulator higher than marked
maximum pressure of attachment.
3.
Risk of injury - do not direct air
stream at people or animals.
4.
Do not use to supply breathing air.
b.Disconnect the plug from the
power source before making any
adjustments, changing accessories,
or storing the compressor. Such
preventive safety measures reduce
the risk of starting the compressor
accidentally.
c.Store an idle compressor out of
the reach of children and do not
allow persons unfamiliar with the
compressor or these instructions to
operate it. A compressor is dangerous
in the hands of untrained users.
d.Maintain the compressor. Keep
the compressor clean for better
and safer performance. Follow
Page 4
Service
For technical questions, please call 1-800-444-3353.
SKU 67708
5.
Do not leave compressor unattended
for an extended period while plugged
in. Unplug compressor after working.
6.
Keep compressor well-ventilated. Do
not cover compressor during use.
7.
Drain Tank daily and after use. Internal
rust causes tank failure and explosion.
8.
9.
Add correct amount of compressor
oil before first use and every use.
Operating with low or no oil causes
permanent damage and voids warranty.
Do not remove the valve cover or adjust
internal components.
10. Compressor head gets hot during
operation. Do not touch it or allow
children nearby during or immediately
following operation.
11. Do not use the air hose to move the
compressor.
12. Release the pressure in the storage tank
before moving.
13. The use of accessories or attachments
not recommended by the manufacturer
may result in a risk of injury to persons.
14. All air line components, including hoses,
pipe, connectors, filters, etc., must be
rated for a minimum working pressure
of 150 PSI, or 150% of the maximum
system pressure, whichever is greater.
15. USE OF AN EXTENSION CORD IS NOT
RECOMMENDED. If you choose to
use an extension cord, use the following
guidelines:
RECOMMENDED MINIMUM WIRE
GAUGE FOR EXTENSION CORDS
(120 VOLT)
NAMEPLATE
AMPERES
(at full load)
EXTENSION CORD
LENGTH
25’
50’ 100’ 150’
0–6
18
16
16
14
6.1 – 10
18
16
Do not use.
10.1 – 12
16
16
Do not use.
12.1 – 16
14
12
Do not use.
TABLE A
a.Make sure your extension cord is in
good condition.
b.Be sure to use an extension cord
which is heavy enough to carry the
current your product will draw. An
undersized cord will cause a drop in line
voltage resulting in loss of power and
overheating. Table A shows the correct
size to use depending on cord length
and nameplate ampere rating. If in
doubt, use the next heavier gauge. The
smaller the gauge number, the heavier
the cord.
16. Industrial applications must follow OSHA
guidelines.
17. Maintain labels and nameplates on the
compressor. These carry important
safety information. If unreadable or
missing, contact Harbor Freight Tools for
a replacement.
18. This product is not a toy. Keep it out of
reach of children.
19. Operate unit on level surface. Check
oil level daily and fill to marked level if
needed.
SKU 67708
For technical questions, please call 1-800-444-3353.
Page 5
20. People with pacemakers should
consult their physician(s) before use.
Electromagnetic fields in close proximity
to heart pacemaker could cause
pacemaker interference or pacemaker
failure.
21. WARNING: The brass components of
this product contain lead, a chemical
known to the State of California to cause
birth defects (or other reproductive
harm). (California Health & Safety code
§ 25249.5, et seq.)
22. The warnings, precautions, and
instructions discussed in this instruction
manual cannot cover all possible
conditions and situations that may occur.
It must be understood by the operator
that common sense and caution are
factors which cannot be built into this
product, but must be supplied by the
operator.
Save these
instructions.
proper outlet installed by a
qualified electrician.
110-120 V~ Grounded Compressors:
Compressors with
Three Prong Plugs
1.
In the event of a malfunction or
breakdown, grounding provides a path
of least resistance for electric current to
reduce the risk of electric shock. This
compressor is equipped with an electric
cord having an equipment-grounding
conductor and a grounding plug. The
plug must be plugged into a matching
outlet that is properly installed and
grounded in accordance with all local
codes and ordinances.
2.
Do not modify the plug provided – if it will
not fit the outlet, have the proper outlet
installed by a qualified electrician.
3.
Improper connection of the equipmentgrounding conductor can result in a risk
of electric shock. The conductor with
insulation having an outer surface that
is green with or without yellow stripes is
the equipment-grounding conductor. If
repair or replacement of the electric cord
or plug is necessary, do not connect the
equipment-grounding conductor to a live
terminal.
4.
Check with a qualified electrician or
service personnel if the grounding
instructions are not completely
understood, or if in doubt as to whether
the compressor is properly grounded.
5.
Use only 3-wire extension cords that
have 3-prong grounding plugs and
3-pole receptacles that accept the
compressor’s plug.
6.
Repair or replace damaged or worn cord
immediately.
Grounding
To prevent
electric shock
and death from incorrect
grounding wire
connection:
Check with a qualified electrician
if you are in doubt as to whether
the outlet is properly grounded.
Do not modify the power cord
plug provided with the
compressor. Never remove the
grounding prong from the plug.
Do not use the compressor if the
power cord or plug is damaged.
If damaged, have it repaired by a
service facility before use. If the
plug will not fit the outlet, have a
Page 6
For technical questions, please call 1-800-444-3353.
SKU 67708
Symbology
Grounding
Pin
125 V~ 3-Prong Plug and Outlet
(for up to 125 V~ and up to 15 A)
7.
8.
9.
This compressor is intended for use on
a circuit that has an outlet that looks
like the one illustrated above in 125
V~ 3-Prong Plug and Outlet. The
compressor has a grounding plug that
looks like the plug illustrated above in
125 V~ 3-Prong Plug and Outlet.
The outlet must be properly installed and
grounded in accordance with all codes
and ordinances.
Do not use an adapter to connect this
compressor to a different outlet.
SKU 67708
PSI
Pounds per square inch of
pressure
CFM
Cubic Feet per Minute flow
SCFM
Cubic Feet per Minute flow at
standard conditions
NPT
National pipe thread, tapered
NPS
National pipe thread, straight
Double Insulated
Canadian Standards Association
Underwriters Laboratories, Inc.
V~
A
Volts Alternating Current
Amperes
For technical questions, please call 1-800-444-3353.
Page 7
Specifications
Electrical
Requirements
120 V~ / 60 Hz / 2.5 HP
Amperage
14A (Dedicated circuit
recommended)
Air Outlet Size
1/ ”
4
Air Pressure
Auto Shut-Off @ 125 PSI
Restart @ 95 PSI
Air Tank Capacity
10 Gallons
Air Flow Capacity
5.3 SCFM @ 90 PSI
6.2 SCFM @ 40 PSI
Oil Capacity
5.6 oz.
Oil Type
Sound Level
-18 NPT
assembling or making any
adjustments to the compressor.
Note: For additional information regarding the
parts listed in the following pages, refer
to the Assembly Diagram near the end of
this manual.
Functions
Oil Sight
Glass
(33)
Air Compressor Oil
(Sold separately)
(SKU 95048)
89 dB @ 1m
Unpacking
When unpacking, make sure that the
item is intact and undamaged. If any parts
are missing or broken, please call Harbor
Freight Tools at 1-800-444-3353 as soon as
possible.
(Top View)
Pressure
Switch
(54)
Instructions for putting
into use
Read the entire Important
Safety Information
section at the beginning of this
manual including all text under
subheadings therein before set up
or use of this product.
Pressure
Tank Pressure Output Regulator
Gauge (53) Pressure
(74)
Gauge
(77)
ON/OFF
Power
Lever
(On
Pressure
Coupler
Switch (54))
Safety
for
Valve (73)
attaching
in-line
shutoff
valve, air
Drain Valve (66)
hose and
tool
OFF
ON
Tank Pressure
Gauge (53)
ON/OFF
Power
Lever
Output
Pressure
Gauge
Pressure (77)
Regulator
(74)
Figure 1
REV 11b
To prevent
serious injury
from accidental
operation:
Turn the Power Switch “OFF”
and unplug the Air Compressor
from its electrical outlet before
Page 8
For technical questions, please call 1-800-444-3353.
SKU 67708
female Quick Coupler and fully open all
regulators and valves.
Assembly/Mounting
b.Plug in the Power Cord.
Bolt (64)
c.Turn the Power Switch ON.
Wheel (63)
Bolts (71) Tank (70)
d.Let the unit run for 30 minutes. Air will
expel freely through the Coupler.
Hex
Nuts
(65)
e.Turn the Power Switch OFF.
f. Unplug the Power Cord and remove the
male coupler.
Handle (72)
5.
Wheel (63)
Bolts (71)
Bolt (64)
Figure 2
1.
Attach the Wheels to the Tank, using the
Bolts and Hex Nuts.
2.
Slide the Handle into the two slots on the
top of the Tank and secure in place with
four Bolts.
Cylinder Head (7)
Connect a regulator valve, an inline shut
off valve and a 1/4” NPT air hose to the
Quick Coupler (all sold separately). The
air hose must be long enough to reach
the work area with enough extra length
to allow free movement while working.
Note: An in-line shutoff ball valve is an
important safety device because it
controls the air supply even if the air
hose is ruptured. The shutoff valve
should be a ball valve because it can
be closed quickly.
Coupler
Plug
Coupler
Plug
Tool
Quick
Coupler
Air Filter
(6)
Shut
Off
Valve
Oiler
Air Hose
on Reel
Filter
Air
Compressor
Figure 3
3.
4.
Quick
Coupler
Thread the Air Filter onto the side of the
Cylinder Head.
Break in the new Air Compressor as
follows:
a.Make sure the Power Switch is OFF
and the unit is unplugged. Insert a
male coupler (sold separately) into the
SKU 67708
Regulator with
Pressure Gauge
Sample Air Line Setup
6.
Depending on the tool which you will
be using with this compressor, you
may need to incorporate additional
components, such as an in-line oiler,
a filter, or a dryer (all sold separately).
For technical questions, please call 1-800-444-3353.
Page 9
Consult your air tool’s manual for needed
accessories.
Checking the Oil
1.
c.Replace the Oil Plug.
Cold Weather Operation
Premium quality SAE 30-weight, nondetergent, air compressor oil (sold
separately) is recommended for use
with this compressor. Start compressor
in heated area if outdoor temperatures
drop below 32° F. If this is not practical,
drain out the old pump oil and use SAE
10W Non-detergent Air Compressor Oil
in the pump crankcase instead whenever
the compressor’s temperature will fall
below 40°. Do not use multi-viscosity
oil (such as 10W-30), they leave carbon
deposits on pump components and lead
to accelerated failure. Heavy operation
may require heavier viscosity oil.
Check the oil level before operation.
Fill the Pump Crankcase with premium
quality SAE 30-weight, non-detergent, air
compressor oil (sold separately).
IMPORTANT: Running the Air Compressor
with the incorrect amount of oil will
cause damage to the equipment
and void the warranty. To prevent
damage, do not use with overfilled
or low oil. Slowly fill to full line, wait
2 minutes and fill back up to full line.
Compressor has small passages that
will fill slowly.
Crankcase Cover (31)
Oil Sight Glass (33)
4.
If uncertain which oil to use for this
compressor, please call Harbor Freight
Tools customer service at 1-800-4443353 for assistance.
5.
Change the compressor oil after the
first hour of use to remove any debris.
OIL LEVEL
overfill
full
low
Tank (70)
Figure 5
2.
The oil level should be at the center of
the “full” level on the oil level sight glass,
as shown in Figure 2. Add oil as needed
to maintain this level. Do not let the
oil level go below the center dot (LOW
as shown above) and do not overfill
the oil so that it is above the center dot
(OVERFILL as shown above) on the
sight glass.
3.
To add oil:
WARNING! To prevent serious injury from
burns: Do not add or change the oil while
the compressor is in operation. Allow the
compressor to cool before replacing oil.
a.Remove the Oil Plug.
b.Using a funnel to avoid spills, pour
enough oil into the Pump Crankcase
to reach the “full” level in the Oil Sight
Glass.
Page 10
For technical questions, please call 1-800-444-3353.
REV 10e
SKU 67708
General Operating
Instructions
Read the entire Important
Safety Information
section at the beginning of this
manual including all text under
subheadings therein before set up
or use of this product.
Compressor Area Set Up
1.
Designate a work area that is clean and
well-lit. The work area must not allow
access by children or pets to prevent
injury.
2.
Locate the Compressor on a flat
level surface to ensure proper pump
lubrication and to prevent damage to the
unit. Keep at least 12” of space around
the unit to allow air circulation.
3.
Route the power cord from the
compressor to the grounded wall outlet,
along a safe path without creating a
tripping hazard or exposing the power
cord to possible damage.
General Operation
1.
Close the Drain Valve (66).
2.
Make sure all nuts and bolts are tight.
3.
Check for oil leaks and check the oil
level (See Checking the Oil).
9.
Turn the Power Switch ON.
10. Allow the Air Compressor to build up
pressure until it cycles off.
Note: At the beginning of the day’s first use of
the Air Compressor, check for air leaks
by applying soapy water to connections
while the Air Compressor is pumping
and after pressure cut-out. Look for air
bubbles. If air bubbles are present at
connections, tighten connections. Do
not use the air compressor unless all
connections are air tight, the extra air
leaking out will cause the compressor to
operate too often, increasing wear on the
compressor.
Note: As long as the Power Switch is ON,
the operation of the Air Compressor
is automatic, controlled by an internal
pressure switch. The Compressor
will turn on automatically when the air
pressure drops to 95 PSI as indicated
on the Tank Pressure Gauge (53), and
will turn off automatically when the air
pressure reaches 125 PSI as indicated.
IMPORTANT: The internal pressure
switch is not user adjustable, do not
make changes to the air pressure
settings of the internal pressure
switch. Any change to the automatic
pressure levels may cause excess
pressure to accumulate, causing a
hazardous situation.
4.
Close the in-line Shutoff Valve between
the compressor and the air hose.
5.
Make sure the air tool’s throttle or switch
in the off position.
6.
Connect the air tool to the air hose.
7.
Plug the Air Compressor Power Cord
into a grounded 120 V electrical outlet.
11. Adjust the Air Compressor’s Pressure
Regulator (74) so that the air output is
enough to properly power the tool, but
the output will not exceed the tool’s
maximum air pressure at any time.
Turn the knob clockwise to increase
the pressure and counter-clockwise to
decrease pressure. Adjust the pressure
gradually, while checking the air output
gauge to set the pressure.
8.
Open the in-line Shutoff Valve.
12. Use the air tool as needed.
SKU 67708
For technical questions, please call 1-800-444-3353.
Page 11
13. After the job is complete, turn the Power
Switch OFF.
b.Wait until the Compressor cools down
(about 10 minutes);
14. Unplug the Air Compressor.
c.If the unit does not start up again on it’s
own, press the Reset Button to start the
compressor;
15. Close the in-line Shutoff Valve.
16. Bleed air from the tool then disconnect
the tool.
d.Resume operation.
2.
17. Turn the Drain Valve (66), at the bottom
of the Tank, two turns clockwise to
release any built-up moisture and the
internal tank pressure. Close the valve
after moisture has drained out. Do not
remove the Drain Valve.
18. Clean, then store the Air Compressor
indoors.
Possible causes of repeated automatic
shut off of the compressor are:
a.Using an extension cord that is too long
or narrow;
b.An air leak or open hose causing the
compressor to cycle too often and build
up heat.
3.
Correct any issues before further use to
avoid damage to the compressor.
Emergency Depressurization
If it is necessary to quickly depressurize
the Compressor, turn the Power Switch
OFF. Then, pull on the ring on the Safety
Valve (73) to quickly release stored air
pressure.
Automatic Shut off System
Reset Button
Figure 4
1.
If the Compressor automatically shuts
off:
a.Shut off all tools.
Page 12
For technical questions, please call 1-800-444-3353.
SKU 67708
Maintenance And
Servicing
Procedures not specifically
explained in this manual must
be performed only by a qualified
technician.
To prevent
serious injury
from accidental
operation:
Turn the Power Switch “OFF”
and unplug the Compressor from
its electrical outlet before
performing any inspection,
maintenance, or cleaning
procedures.
To prevent serious injury
from compressor failure:
Do not use damaged equipment.
If abnormal noise or vibration
occurs, have the problem
corrected before further use.
Cleaning, Maintenance, and
Lubrication
1.
BEFORE EACH USE, inspect the
general condition of the Air Compressor.
Check for loose hardware, misalignment
or binding of moving parts, damaged
belts, cracked or broken parts, damaged
electrical wiring, and any other condition
that may affect its safe operation.
2.
After Use, wipe external surfaces of
the compressor with a clean cloth.
3.
WARNING! If the supply cord
of this compressor is damaged, it
must be replaced only by a qualified
service technician.
SKU 67708
Maintenance Schedule
Following are general guidelines
for maintenance checks of the Air
Compressor.
Note: The environment in which the
compressor is used, and the frequency
of use can affect how often you will need
to check the Air Compressor components
and perform maintenance procedures.
Daily:
a.Check oil level.
b.Check for oil leaks.
c.Make sure all nuts and bolts are tight.
d.Drain moisture from air tank.
e.Check for abnormal noise or vibration.
f. Check for air leaks.*
g.Wipe off any oil or dirt from the
compressor.**
Weekly:
a.Inspect Air Filter (6).
b.Inspect Oil Breather Plug (37).
Monthly:
Inspect Safety Valve (73).
Every 6 months or 100 Operation Hours:
Replace Pump oil.***
* To check for air leaks, apply soapy water to
joints while the Air Compressor is pressurized.
Look for air bubbles.
** To clean the compressor surface, wipe with
a damp cloth, using a mild detergent or mild
solvent.
*** Use Air Compressor Oil only (sold
separately - SKU 95048).
For technical questions, please call 1-800-444-3353.
Page 13
Oil Maintenance
Check the oil periodically for clarity.
Replace oil if it appears milky or if debris
is present, or every 6 months, or 100
hours of runtime, whichever comes first.
In harsh environments such as high heat
or high humidity, you will need to replace
the oil more frequently.
WARNING: Risk of personal injury hazard.
Allow Air Compressor to cool before
changing the oil.
To drain the oil from the Pump Crankcase
(39):
a.Place a container under the Drain Plug
(35).
b.Remove the Oil Breather Plug (37) to
allow air flow into the Pump.
a.Make sure the Power switch of the
compressor is off.
b.Place a collection pan under the Drain
Valve.
c.Unthread the Drain Valve clockwise two
or three turns ONLY.
d.When all the pressure and moisture is
released, close the Drain Valve.
Air Filter Maintenance
Check the Air Filter weekly to see if it
needs replacement. If working in dirty
environments, you may need to replace
the filter more often. To replace the Air
Filter:
a.Unthread the Air Filter counterclockwise.
b.Replace with a new Air Filter.
c.Remove the Drain Plug, allowing the oil
to drain into the container.
d.When the oil is completely drained from
the Pump, replace the Drain Plug.
e.Fill the Pump with new compressor oil
to the FULL level on the Oil Sight Glass.
f. Replace and tighten the Oil Breather
Plug.
g.Discard the old oil according to local,
state and federal regulations.
Draining Moisture from the Tank
The Drain Valve (66) is located under
the Tank (70). It must be accessed daily
to release all trapped air and moisture
from the Tank. This will eliminate
condensation which can cause tank
corrosion.
Note: Do not open the Drain Valve so that
more than four threads are showing.
To empty the air and condensation:
Page 14
For technical questions, please call 1-800-444-3353.
SKU 67708
Troubleshooting
Problem
Compressor does
not start or restart
Compressor builds
pressure too slowly
Possible Causes
Likely Solutions
1. Incorrect power supply.
1. Check that circuit matches compressor requirements.
2. No power at outlet.
2. Reset circuit breaker, or have outlet serviced by a qualified
technician.
3. Power cord not plugged in
properly.
3. Check that cord is plugged in securely.
4. Thermal overload switch
tripped.
4. Turn off Tool. Turn off Compressor and wait for it to cool down.
Press reset button. Resume operation.
5. Building power supply circuit
tripped or blown fuse.
5. Reset circuit or replace fuse. Check for low voltage conditions.
It may be necessary to disconnect other electrical appliances
from the circuit or move the compressor to its own circuit.
6. Tank(s) already pressurized.
6. No problem. Compressor will start when needed.
7. Cord wire size is too small or
cord is too long to properly
power compressor.
7. Use larger diameter or shorter extension cord or eliminate
extension cord. See Recommended Wire Gauge for Extension
Cords in Safety section.
8. Compressor needs service.
1. Incorrect power supply.
8. Have unit inspected by a qualified technician.
1. Check that circuit matches compressor requirements.
2. Crankcase overfilled with oil or 2. Drain oil and refill to proper level with recommended oil.
oil too thick.
3. Working environment too cold. 3. Move unit to a warmer location. Check that recommended oil
is in crankcase.
4. Safety valve needs service.
4. Listen for air leaking from valve. If leaking replace with
identical valve with same rating.
5. Reduce air pressure, then check all fittings with a soap solution
for air leaks and tighten as needed. Do not overtighten.
1. Filters need cleaning/replacing. 1. Check inlet and outlet filters. Clean and/or replace as needed.
5. Loose fittings.
Compressor not
building enough air
pressure
High Oil
Consumption
2. Crankcase oil too thick.
2. Drain oil and refill to proper level with recommended oil.
3. Check Valve needs service.
3. Have technician clean or replace, as needed.
4. Compressor not large enough
for job.
4. Check if accessory SCFM is met by Compressor. If
Compressor cannot supply enough air flow (SCFM), you need
a larger Compressor.
5. Loose fittings.
5. Reduce air pressure, then check all fittings with a soap solution
for air leaks and tighten as needed. Do not overtighten.
6. Hose or hose connections not
adequate.
6. Replace with larger hose and/or hose connections.
7. High altitude reducing air
output.
1. Crankcase oil too thin.
7. You may need a larger compressor if you are situated in a high
altitude location.
1. Drain oil and refill to proper level with recommended oil.
2. Unit not on level surface.
2. Reposition unit on a level surface.
3. Crankcase vent clogged.
3. Clean Crankcase vent.
Follow all safety precautions whenever diagnosing or servicing the
compressor. Disconnect power supply before service.
SKU 67708
For technical questions, please call 1-800-444-3353.
Page 15
Problem
Overheating
Possible Causes
Likely Solutions
1. Filters need cleaning/replacing. 1. Check inlet and outlet filters. Clean and/or replace as needed.
2. Crankcase oil too thin or
incorrect type.
2. Drain oil and refill to proper level with recommended oil.
3. Crankcase oil level too low.
3. Add oil to proper level, check for leaks.
4. Unusually dusty environment.
4. Clean and/or replace filters more often or move unit to cleaner
environment.
5. Cord is too small of a gauge or 5. Increase cord size or use shorter length extension cord, or
too long to handle compressor.
eliminate extension cord. See Recommended Wire Gauge for
Extension Cords in Safety section.
Compressor
starts and stops
excessively
Excessive noise
Moisture in
discharge air
Oil in discharge air
Safety Valve “pops”
Air leaks from pump
or fittings
Air leaks from tank
6. Unit not on level surface.
1. Compressor not large enough
for job.
6. Reposition unit on a level surface.
1. Check if accessory SCFM is met by Compressor. If
Compressor doesn’t reach accessory SCFM, you need a larger
Compressor.
2. Loose fittings.
2. Reduce air pressure, then check all fittings with a soap solution
for air leaks and tighten as needed. Do not overtighten.
1. Crankcase overfilled with oil
or oil is incorrect thickness or
type.
1. Drain oil and refill to proper level with recommended oil.
2. Crankcase oil level too low.
2. Add oil to proper level, check for leaks.
3. Loose or damaged belt guard.
3. Replace belt guard.
4. Loose fittings.
4. Reduce air pressure, then check all fittings with a soap solution
for air leaks and tighten as needed. Do not overtighten.
5. Unit not on level surface.
Too much moisture in air.
5. Reposition unit on a level surface.
Install inline air filter/dryer, and/or relocate to less humid
environment.
1. Drain oil and refill to proper level with recommended oil.
1. Crankcase oil too thin or
crankcase overfilled with oil.
2. Crankcase vents clogged.
Safety valve needs service.
Loose fittings.
Defective or rusted tank.
2. Clean Crankcase vents.
Pull on test ring of safety valve. If it still pops, replace.
Reduce air pressure, then check all fittings with a soap solution for
air leaks and tighten as needed. Do not overtighten.
Have tank replaced by a qualified technician.
Follow all safety precautions whenever diagnosing or servicing the
compressor. Disconnect power supply before service.
Page 16
For technical questions, please call 1-800-444-3353.
SKU 67708
PLEASE READ THE FOLLOWING CAREFULLY
The manufacturer and/or distributor has provided the parts list and assembly
diagram in this manual as a reference tool only. Neither the manufacturer or
distributor makes any representation or warranty of any kind to the buyer that he
or she is qualified to make any repairs to the product, or that he or she is qualified
to replace any parts of the product. In fact, the manufacturer and/or distributor
expressly states that all repairs and parts replacements should be undertaken by
certified and licensed technicians, and not by the buyer. The buyer assumes all risk
and liability arising out of his or her repairs to the original product or replacement
parts thereto, or arising out of his or her installation of replacement parts thereto.
Record Product’s Serial Number Here:
Note: If product has no serial number, record month and year of purchase instead.
Note: Some parts are listed and shown for illustration purposes only, and are not available
individually as replacement parts.
SKU 67708
For technical questions, please call 1-800-444-3353.
Page 17
Parts List
Part
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
26a
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
Description
Cover
Elbow
Start Valve
Spring Washer M6
Screw M6 x 50
Air Filter
Cylinder Head
Head Gasket
Valve Plate
Metal Gasket
Valve
Valve Plate Gasket
Cylinder
Bolt M8 x 30
Spring Washer M8
Cylinder Gasket
Pin
Compression Ring
Oil Ring
Wrist Pin Retainer
Piston
Connecting Rod
Screw M6 x 20
Hex Nut M6
Crank Shaft
O-Ring
Zip Tie
Capacitor
Screw M8 x 20
Capacitor Bracket
Hex Nut M8
Crank Case Cover
O-Ring
Oil Sight Glass
O-Ring
Drain Plug M5 x 10
O-Ring
Oil Breather Plug
Crankcase Cover Gasket
Pump Crankcase
Washer M5
Screw M5 x 16
Page 18
Qty
1
1
1
8
4
1
1
1
2
1
2
1
1
2
3
1
1
2
1
2
1
1
5
3
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
10
10
Part
42
43
44
45
46
47
48
49
50
51
51a
51b
51c
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
Description
Manual Overload Protector
Oil Seal
Bearing
Rotator
Bearing
Stator
Automatic Thermal Protector
End Cover
Fan
Circlip
Plain Washer 5
Spring Washer 5
Bolt
Connector
Tank Pressure Gauge
Pressure Switch
Unloader Tube
Nut
Ferrule
Check Valve
Ferrule
Nut
Exhaust Tube
Cooling Fin
Wheel
Bolt M12 x 55 (washer/bushing
assembly)
Hex Nut M12
Drain Valve
Foot Pad
Washer
Screw M6 x 25
Tank
Bolt M6 x 10
Handle
Safety Valve
Pressure Regulator
Motor Cord
Quick Coupler
Output Pressure Gauge
Plug
For technical questions, please call 1-800-444-3353.
Qty
1
1
1
1
1
1
1
1
1
1
4
4
4
1
1
1
1
1
1
1
2
2
1
1
2
2
2
1
2
2
2
1
4
1
1
1
1
1
1
1
SKU 67708
ASSEMBLY DIAGRAM
SKU 67708
For technical questions, please call 1-800-444-3353.
Page 19
Limited 1 year / 90 day
Warranty
Harbor Freight Tools Co. makes every
effort to assure that its products meet
high quality and durability standards, and
warrants to the original purchaser that for
a period of one year from date of purchase
that the tank is free of defects in materials
and workmanship (90 days if used by a
professional contractor or if used as rental
equipment). Harbor Freight Tools also
warrants to the original purchaser, for a
period of ninety days from date of purchase,
that all other parts and components of the
product are free from defects in materials and
workmanship. This warranty does not apply
to damage due directly or indirectly to misuse,
abuse, negligence or accidents, repairs or
alterations outside our facilities, normal wear
and tear, or to lack of maintenance. We
shall in no event be liable for death, injuries
to persons or property, or for incidental,
contingent, special or consequential damages
arising from the use of our product. Some
states do not allow the exclusion or limitation
of incidental or consequential damages,
so the above limitation of exclusion may
not apply to you. This warranty is
expressly in lieu of all other
warranties, express or implied,
including the warranties of
merchantability and fitness.
Page 20
To take advantage of this warranty,
the product or part must be returned to us
with transportation charges prepaid. Proof
of purchase date and an explanation of the
complaint must accompany the merchandise.
If our inspection verifies the defect, we
will either repair or replace the product at
our election or we may elect to refund the
purchase price if we cannot readily and
quickly provide you with a replacement. We
will return repaired products at our expense,
but if we determine there is no defect, or that
the defect resulted from causes not within the
scope of our warranty, then you must bear the
cost of returning the product.
This warranty gives you specific legal
rights and you may also have other rights
which vary from state to state.
3491 Mission Oaks Blvd. • PO Box 6009
Camarillo, CA 93011 • (800) 444-3353
For technical questions, please call 1-800-444-3353.
SKU 67708

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