Harbor Freight Tools 60 gal. 5 HP 165 PSI Two Stage Air Compressor Product manual

Owner’s Manual & Safety Instructions
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.
60 GAL 5 HP 165 PSI oil lubricated
air compressor
REV 14i
Visit our website at: http://www.harborfreight.com
Email our technical support at: productsupport@harborfreight.com
When unpacking, make sure that the product is intact
and undamaged. If any parts are missing or broken,
please call 1-888-866-5797 as soon as possible.
Copyright© 2014 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.
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.
Table of Contents
Safety��������������������������������������������������������� 2
Maintenancei���������������������������������������������� 14
Setupp���������������������������������������������������������� 6
Parts List and Diagram............................... 18
Specifications.............................................. 6
Warranty..................................................... 20
Safety
Operationa��������������������������������������������������� 12
Setup
WARNING SYMBOLS AND DEFINITIONS
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.
Indicates a hazardous situation which, if not avoided,
will result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.
Operation
Addresses practices not related to personal injury.
Maintenance
Page 2
For technical questions, please call 1-888-866-5797.
Item 93274
IMPORTANT SAFETY INFORMATION
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.
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.
c. Keep children and bystanders away
from an operating compressor.
2. Electrical safety
a. A qualified electrician must connect the
compressor to a 240VAC/60Hz power
supply, rated to at least 25 amps.
b. Do not expose compressor to rain or wet
conditions. Water entering a compressor
will 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.
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 off‑position before connecting
to power source or moving the compressor.
4. Compressor use and care
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 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.
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.
5. Service
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.
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.
Item 93274
Setup
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.
Operation
a. Keep work area clean and well lit.
Cluttered or dark areas invite accidents.
b. DISCONNECT and TAG OUT the
compressor’s power source, turn the
switch off, and relieve all air pressure
before making any adjustments, changing
accessories, or storing the compressor.
Such preventive safety measures reduce the
risk of starting the compressor accidentally.
Maintenance
1. Work area safety
Safety
General Safety Warnings
For technical questions, please call 1-888-866-5797.
Page 3
Air Compressor Safety Warnings
Safety
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.
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. Industrial applications must follow OSHA guidelines.
16. Maintain labels and nameplates on the
compressor. These carry important safety
information. If unreadable or missing, contact
Harbor Freight Tools for a replacement.
Setup
5. Do not leave compressor unattended for an
extended period while connected to power
source. DISCONNECT and TAG OUT the
compressor’s power source, turn the switch
off, and relieve all air pressure after working.
17. This product is not a toy.
Keep it out of reach of children.
6. Keep compressor well-ventilated.
Do not cover compressor during use.
19. 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.
7. Drain Tank daily and after use. Internal rust causes
tank failure and explosion.
8. Add correct amount of compressor oil before first
use and every use. Operating with low or no oil
causes permanent damage and voids warranty.
9. Do not remove the valve cover or
adjust internal components.
Operation
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.
18. Operate unit on level surface. Check oil level
daily and fill to marked level if needed.
20. WARNING: The brass components of this product
contain lead, a chemical known to the State
of California to cause cancer and birth defects
or other reproductive harm. (California Health
& Safety Code § 25249.5, et seq.)
21. WARNING: The cord of this product contains
lead and/or di (2-ethylhexyl) phthalate (DEHP),
chemicals known to the State of California
to cause cancer, and birth defects or other
reproductive harm. Wash hands after handling.
(California Health & Safety Code § 25249.5, et seq.)
22. WARNING: This product contains or, when
used, produces a chemical known to the State
of California to cause cancer and birth defects
or other reproductive harm. (California Health
& Safety Code § 25249.5, et seq.)
SAVE THESE INSTRUCTIONS.
Maintenance
Page 4
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Item 93274
TO PREVENT ELECTRIC SHOCK AND DEATH
FROM INCORRECT GROUNDING WIRE CONNECTION:
A qualified electrician must connect the compressor to a 240VAC/60Hz power supply, rated to at
least 25 amps. Do not use the compressor if the connector is damaged. If damaged, have it
repaired by a service facility before use.
Permanently Connected Compressors
Safety
Grounding
This Compressor should be connected to a grounded
metal permanent wiring system; or to a system
having an equipment-grounding conductor.
Symbology
PSI
Canadian Standards Association
CFM
Cubic Feet per Minute flow
Underwriters Laboratories, Inc.
SCFM
Cubic Feet per Minute flow
at standard conditions
NPT
National pipe thread, tapered
NPS
National pipe thread, straight
V
~
A
Setup
Pounds per square inch of pressure
Volts
Alternating Current
Amperes
Maintenance
Operation
Double Insulated
Item 93274
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Page 5
Specifications
Electrical Rating
240VAC / 60Hz / 22A
Air Outlet Size
1/ ″
2
Safety
Air Pressure
-18 NPT
Shut-off 150 PSI
Restart 125 PSI
Air Tank Capacity
60 Gallons
Air Production
Capacity
Sound Level
15.8 CFM @ 90 PSI
16.4 CFM @ 40 PSI
88 dB @ 3′
Oil Capacity
24 oz.
Oil Type
SAE 30W, non‑detergent, Air Compressor Oil
(sold separately)
Belt
A53 V-Belt
Setup
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.
TO PREVENT SERIOUS INJURY FROM AUTOMATIC OPERATION:
Turn the Power Switch “OFF” and DISCONNECT and TAG OUT the compressor’s power source, turn the
switch off, and relieve all air pressure before assembling or making any adjustments to the compressor.
WARNING! A qualified electrician must connect the compressor to a
240VAC/60Hz power supply, rated to at least 25 amps.
Operation
Note: For additional information regarding the parts listed in the following pages,
refer to the Assembly Diagram near the end of this manual.
Wiring
1. A qualified electrician familiar with local electrical
codes in your area must connect the compressor
to a power supply. See Figure A: Power Supply.
2. WARNING! Electrical connections must be
properly grounded. Ground connections should
be connected at the grounding screw.
Maintenance
3. WARNING! To reduce the risk of electrical hazards,
fire hazards or damage to the compressor,
use proper circuit protection. Your compressor
is wired at the factory for operation using the
voltage shown. Connect the compressor to a
power source with the correct breaker size.
Voltage
230V / 1 ph
Full Load Amps
23
Breaker Size
40 amp
Figure A: Power Supply
Connect
incoming
power
here
4. WARNING! Do not connect to
prewired posts (i.e., the Motor).
5. CAUTION! Overheating, short circuiting and fire
damage will result from inadequate wiring.
Page 6
Grounding Screw
Figure B
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Item 93274
Functions
Air Filter
Breather
V-Belt
Discharge Tube
Safety
Belt Guard
Motor
Oil Sight Glass
Oil Drain Bolt
Reset Button
Setup
Quick
Coupler
Tank
Safety
Valve
Operation
Wire
Set
Gauge
Electrical
Connection
Maintenance
Pressure
Switch
Drain
Valve
Item 93274
For technical questions, please call 1-888-866-5797.
Page 7
Assembly/Mounting
Safety
1. WARNING! To prevent serious injury
and DEATH from tipping:
Before use, bolt the compressor to the floor
using bolts and vibration (rubber) pads
(neither included). The floor surface must be
hard, flat and level. Use shims to compensate
for any slight unevenness of the floor.
TO AVOID TANK DAMAGE,
DO NOT OVERTIGHTEN BOLTS.
2. If not already attached, thread the Air Filter
onto the side of the Cylinder Head.
Checking the Oil
1. Check the oil level before operation.
Fill the Pump Crankcase with
SAE 30W, non‑detergent,
Air Compressor Oil (sold separately).
Setup
IMPORTANT: Running the Air Compressor
with no oil or low oil will cause damage to
the equipment and void the warranty.
2. The oil level should be at the center of the “full” level
on the Oil Sight Glass, as shown in Figure C.
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).
3. To add oil:
a. Unthread the Breather.
b. Using a funnel to avoid spills, pour enough
oil into the Pump Crankcase to reach
the “full” level in the Oil Sight Glass.
c. Rethread the Breather.
Note: SAE 30W, non‑detergent,
Air Compressor Oil (sold separately) is
recommended for use with this compressor.
4. If uncertain which oil to use for this compressor,
call Harbor Freight Tools customer service
at 1-888-866-5797 for assistance.
5. Change the compressor oil after the first
hour of use to remove any debris.
Operation
CAUTION! TO PREVENT INJURY FROM BURNS:
Do not add or change the oil while
the compressor is in operation.
Allow the compressor to cool before replacing oil.
OVERFILL
FULL
LOW
Figure C: Oil Sight Glass
Maintenance
Page 8
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Item 93274
Breaking in the Compressor
2. Reconnect the compressor’s power source.
3. Turn the Power Switch ON.
4. Let the unit run for 30 minutes.
Air will expel freely through the Coupler.
5. Turn the Power Switch OFF.
Safety
1. DISCONNECT and TAG OUT the compressor’s
power source, turn the switch off, and relieve
all air pressure before inserting a male coupler
(sold separately) into the female Quick Coupler.
Fully open all regulators and valves.
6. DISCONNECT and TAG OUT the
compressor’s power source, turn the
switch off, and relieve all air pressure.
7. Remove the male coupler.
Air Connection Setup
Maintenance
Operation
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.
2. Depending on the tool that will be used
with this compressor, incorporate additional
components, such as an in-line oiler, a filter,
or a dryer (all sold separately), as shown on
Figure D on page 10 and Figure E on page 11.
Consult air tool’s manual for needed accessories.
Setup
1. 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.
Item 93274
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Page 9
Description
Non-lubricated
Tools
A
Air Hose
Filter
Regulator
Lubricator (optional)
Coupler and Plug
Leader Hose (optional)
Air Cleaner / Dryer (optional)
Air Adjusting Valve (optional)
Maintenance
A
B
C
D
E
F
G
H
Operation
Lubricated
Tools
B
B
C
C
A
Function
A
E
F
H
Connects air to tool
Prevents dirt and condensation from damaging tool or workpiece
Adjusts air pressure to tool
For air tool lubrication
Provides quick connection and release
Increases coupler life
Prevents water vapor from damaging workpiece
For fine tuning airflow at tool
G
D
E
Setup
Figure D: Portable Air Supply Setup
Safety
Page 10
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Item 93274
Item 93274
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Page 11
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
F
Description
F
E
I
I
J
K
N
Operation
J
H
Setup
Function
H
L
L
M
O
Safety
For noise and vibration reduction
Secures air compressor in place
Isolates sections of system for maintenance
For vibration reduction
Distributes air to branch lines
To drain moisture from system
Brings air to point of use
Connects air to tool
Prevents dirt and condensation from damaging tool or workpiece
Adjusts air pressure to tool
For air tool lubrication
Provides quick connection and release
Increases coupler life
Prevents water vapor from damaging workpiece
For fine tuning airflow at tool
Non-lubricated Tools
C
C
Vibration Pads
Anchor Bolts
Ball Valve
Isolation Hose
Main Air Line - 3/4″ minimum recommended
Ball Valve
Branch Air Line -1/2″ minimum recommended
Air Hose
Filter
Regulator
Lubricator (optional)
Coupler and Plug
Leader Hose (optional)
Air Cleaner / Dryer (optional)
Air Adjusting Valve (optional)
B
A
Maintenance
B
A
C D
G
Lubricated
Tools
Slope
Figure E: Stationary Air Supply Setup
F
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.
Safety
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 connection to the power supply from
the compressor to the grounded wall outlet, along
a safe path without creating a tripping hazard or
exposing the connector to possible damage.
General Operation
1. Close the Moisture Drain.
Setup
2. Check for oil leaks and check the oil level
(See Checking the Oil).
3. Close the in-line Shutoff Valve between
the compressor and the air hose.
4. Run compressor on power supply (240 VAC/60H).
5. Turn the Power Switch ON.
6. Allow the Air Compressor to build
up pressure until it cycles off.
Operation
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 cutout. 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 125 PSI,
and will turn off automatically when the
air pressure reaches 150 PSI.
WARNING! TO PREVENT SERIOUS
INJURY AND DEATH FROM
EXPLOSION:
Do not adjust the internal
pressure switch. Any change to the
automatic pressure levels may cause excess pressure to
accumulate, causing a hazardous situation.
7. Adjust the regulator knob 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. Make sure the air tool’s throttle or switch is in the
off position. Connect the air tool to the air hose.
9. Open the in-line Shutoff Valve.
10. Use the air tool as needed.
11. After the job is complete, turn the Power Switch OFF.
12. Close the in-line Shutoff Valve.
13. DISCONNECT and TAG OUT the
compressor’s power source, turn the
switch off, and relieve all air pressure.
Maintenance
14. Turn the Moisture Drain, at the bottom of
the Tank, two turns to release any built‑up
moisture and the internal tank pressure.
Close the Drain after moisture has drained out.
Do not remove the Moisture Drain.
15. Clean, then store the Air Compressor indoors.
Page 12
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Item 93274
Emergency Depressurization
Safety
If it is necessary to quickly depressurize the Compressor,
turn the Power Switch OFF. Then, pull on the ring on
the Safety Valve to quickly release stored air pressure.
Figure F: Safety Valve
Automatic Shut off System
b. Wait until the Compressor cools down
(about 10 minutes);
c. If the unit does not start up again on its own,
press the Reset Button to start the compressor;
Reset Button
2. Possible causes of repeated automatic
shut off of the compressor are:
a. An air leak or open hose causing the compressor
to cycle too often and build up heat.
Setup
a. Shut off all tools.
d. Resume operation.
3. Correct any issues before further use to
avoid damage to the compressor.
Operation
1. If the Compressor automatically shuts off
before reaching its normal cutoff pressure:
Maintenance
Figure G: Reset Button
Item 93274
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Page 13
Maintenance and Servicing
Procedures not specifically explained in this manual must
be performed only by a qualified technician.
Safety
TO PREVENT SERIOUS INJURY FROM AUTOMATIC OPERATION:
Turn the Power Switch “OFF” and DISCONNECT and TAG OUT the compressor’s
power source, turn the switch off, and relieve all air pressure 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
Setup
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 connection to
the power supply of this compressor
is damaged, it must be replaced only
by a qualified service technician.
Maintenance Schedule
Following are general guidelines for maintenance checks of the Air Compressor.
Operation
Note: The environment in which the compressor is used, and the frequency of use will 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. Inspect belt.
h. Wipe off any oil or dirt from the compressor.**
Weekly:
a. Inspect Air Filter.
b. Inspect Breather.
Monthly:
a. Inspect Safety Valve.
b. Check belt adjustment.
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.
Maintenance
** To clean the compressor surface, wipe with
a damp cloth, using a mild detergent or mild solvent.
*** Use SAE 30W, non‑detergent,
Air Compressor Oil only (sold separately).
Draining Moisture from the Tank
The Moisture Drain is located under the Tank. It must be used daily to release all trapped air and
moisture from the Tank. Doing this will eliminate condensation and prevent tank corrosion.
1. DISCONNECT and TAG OUT the
compressor’s power source, turn the
switch off, and relieve all air pressure.
2. Place a collection pan under the Moisture Drain.
Page 14
3. Open the Moisture Drain two or three turns ONLY.
4. When all the pressure and moisture is released,
close the Moisture Drain.
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Item 93274
Oil Maintenance
CAUTION! TO PREVENT INJURY FROM BURNS:
Allow Air Compressor to cool before changing the oil.
1. Place a container under the Oil Drain Bolt.
5. Fill the Pump with new SAE 30W, non‑detergent,
Air Compressor Oil to the FULL level
on the Oil Sight Glass (24 oz.).
2. Unthread the Breather to allow
air flow into the Pump.
Safety
Check the oil periodically for clarity. Replace oil if it appears milky or if debris is present,
or every 6 months, or 100 operation hours, whichever comes first.
Replace the oil more frequently if compressor is used in harsh environments such as high heat or high humidity.
6. Rethread and tighten the Breather.
3. Remove the Oil Drain Bolt, allowing
the oil to drain into the container.
4. When the oil is completely drained from the Pump,
replace the Oil Drain Bolt.
7. Discard the old oil according to local,
state and federal regulations.
Air Filter Maintenance
1. Remove the Cover.
3. Replace with a new Air Filter.
2. Remove the Air Filter.
4. Replace the Cover.
Setup
Check the Air Filter weekly to see if it needs replacement.
Replace the filter more often if compressor is used in dirty environments.
Replacing the V-Belt
1. Unlatch the fasteners and open the guard.
3. Check and adjust belt tension
according to the steps below:
Deflection
Distance
Operation
TO PREVENT SERIOUS INJURY FROM AUTOMATIC
OPERATION:
DISCONNECT and TAG OUT the compressor’s
power source, turn the switch off, and relieve all
air pressure before opening the Belt Guard.
d. Move the motor away from the other pulley until it
is properly tensioned according to the directions
below. Tighten the motor mounting bolts.
Fasteners
Fan
a. Press on the center of the longest span
on the belt with moderate finger pressure.
Then measure the deflection distance,
the distance that the belt moved. The
belt should deflect about 1/2″.
Pulley
Figure H
Bolts
2. Examine belt for cracks, tears in the
backing, or other damage. Replace belt
if damaged according to steps below:
a. Loosen the motor mounting bolts and slide the
motor towards the other pulley as far as possible.
b. Slide the old belt off of the smallest
pulley first, then remove it.
c. Put the new belt around the larger pulley
first, then around the smaller pulley.
Item 93274
b. If the belt deflects too much, tighten belt
by loosening the motor mounting bolts and
moving the motor away from the other pulley
slightly. Secure motor mounting bolts and
retest tension. If the belt is too long to be
properly tensioned, it must be replaced.
c. If the belt deflects too little, loosen belt by
loosening the motor mounting bolts and moving
the motor towards the other pulley very slightly.
Secure motor mounting bolts and retest tension.
4. Before use, replace belt cover.
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Page 15
Maintenance
V-Belt
Tank Inspection
Safety
1. Follow local, state, and national air tank
maintenance and inspection codes.
3. Yearly, the tank must be visually
inspected by a qualified inspector.
2. The head and shell minimum allowable
wall thicknesses for these inspections
are both 0.094" each.
4. Every 10 years, the tank must be hydrostatically
inspected by a qualified inspector.
Troubleshooting
Problem
Compressor does
not start or restart
Setup
Compressor builds
pressure too slowly
Operation
Compressor not
building enough
air pressure
Overheating
Possible Causes
Likely Solutions
1. Tank(s) already pressurized.
1. No problem. Compressor will start when needed.
2. Power supply not connected properly.
2. Check that connection is secure.
3. Incorrect power supply.
3. Check that circuit matches compressor requirements.
4. No power at outlet.
4. Reset circuit breaker, or have outlet
serviced by a qualified technician.
5. Thermal overload switch tripped.
5. Turn off Compressor and wait for it to cool down.
Press reset button. Resume operation.
6. Building power supply circuit tripped or
blown fuse.
6. 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.
7. Compressor needs service.
7. Have unit inspected by a qualified technician.
1. Incorrect power supply.
1. Check that circuit matches compressor requirements.
2. Crankcase oil overfilled or oil too thick.
2. Drain oil and refill to proper level with recommended oil.
3. Working environment too cold.
3. Move compressor to a warmer location.
Check that recommended oil is in crankcase.
4. Safety valve leaking.
4. Listen for air leaking from valve.
If leaking, replace with identical valve with same rating.
DO NOT SEAL OR TAMPER WITH SAFETY VALVE.
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.
1. Air filters need cleaning/replacing.
1. Check inlet and outlet filters.
Clean and/or replace as needed.
2. Check Valve needs service.
2. Have technician clean or replace, as needed.
3. Compressor not large enough for job.
3. Check if accessory CFM is met by Compressor.
If Compressor cannot supply enough air flow (CFM),
you need a larger Compressor.
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. Hose or hose connections too narrow.
5. Replace with wider hose and/or hose connections.
6. Crankcase oil too thick.
6. Drain oil and refill to proper level with recommended oil.
7. High altitude reducing air output.
7. Higher altitudes require compressors with greater output.
1. Air filters need cleaning/replacing.
1. Check inlet and outlet filters.
Clean and/or replace as needed.
Maintenance
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. Unit not on level surface.
5. Reposition unit on a level surface.
Follow all safety precautions whenever diagnosing or servicing the compressor.
Disconnect power supply before service.
Page 16
For technical questions, please call 1-888-866-5797.
Item 93274
Troubleshooting (cont.)
Likely Solutions
1. Loose fittings.
1. Reduce air pressure, then check all fittings with a soap
solution for air leaks and tighten as needed.
Do not overtighten.
2. Compressor not large enough for job.
2. Check if accessory CFM is met by Compressor.
If Compressor doesn’t reach accessory CFM,
you need a larger Compressor.
1. Loose fittings.
1. Reduce air pressure, then check all fittings with a soap
solution for air leaks and tighten as needed.
Do not overtighten.
2. Loose or damaged belt guard.
2. Replace belt guard.
3. Crankcase overfilled with oil or oil
is incorrect thickness or type.
3. Drain oil and refill to proper level with recommended oil.
4. Crankcase oil level too low.
4. Add oil to proper level, check for leaks.
5. Unit not on level surface.
5. Reposition unit on a level surface.
Moisture in
discharge air
Too much moisture in air.
Install inline air filter/dryer, and/or relocate
to less humid environment.
Safety Valve “pops”
Safety valve needs service.
Pull on test ring of safety valve. If it still pops, replace.
Air leaks from
pump or fittings
Loose fittings.
Reduce air pressure, then check all fittings with a soap
solution for air leaks and tighten as needed.
Do not overtighten.
Air leaks from tank
Defective or rusted tank.
Have tank replaced by a qualified technician.
Drain moisture from tank daily to prevent future corrosion.
Oil in discharge
air or high oil
consumption
1. Crankcase oil too thin or
crankcase overfilled with oil.
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.
Compressor
starts and stops
excessively
Excessive noise
Safety
Possible Causes
Setup
Problem
Maintenance
Operation
Follow all safety precautions whenever diagnosing or servicing the compressor.
Disconnect power supply before service.
Item 93274
For technical questions, please call 1-888-866-5797.
Page 17
Parts List and Diagram
PLEASE READ THE FOLLOWING CAREFULLY
Safety
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.
Parts List
Part
Setup
Operation
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Description
Tank: 60 Gallon Black 3 Leg
Sheave: 4.25″ Od, 2 Groove
Bushing: 7/8″ H
Check Valve: 1/2″ X 1/2″,
Drain Valve: 1/4″, Vs, Knurled
Safety Valve: 170 Psi
3/8″ Romex Connector
Bushing: Hex 1/2″ X 1/4″
Gauge: 300 Psi
Compressor
Belt Guard: Back W/ Cut Outs
Belt Guard: Front
Motor: 5Hp 1Ph 230V
Discharge Tube: Copper, 5/8″ Od
Elbow: 5/8″ Tube X 1/2″ Npt
Bracket: Belt Guard
Belt: A53
Qty
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
Part
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
Description
Nipple: 1/4″ Close
Pressure Switch: 130-165 Psi
Nipple: 1/2″ Close
Coupling-Pipe: 1/2″Npt
Plug: 1/4″, Allen Head
Fastener: Belt Guard Sq. Hd
Bolt: 1/4″-20X 3/4″L Hex Hd
Bolt: 1/4″-20 X 3/4″L, Tap-Tight
Washer-Flat: Fender, 1 1/4″
Nut: 1/4″-20 Nylon Lock
Bolt: 5/16″-18 X 1″L Hex Hd
Washer-Flat: 5/16″
Nut: 5/16″ Nylon Lock
Wire-Set: 33″ 12/3 So
Bolt: 5/16″-18 X 2″L
Tubing: 1/4″ Od X Ft
Connector: Push-In, 1/2″
Qty
1
1
1
1
1
7
1
4
4
1
4
16
8
1
4
1
1
Maintenance
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.
Page 18
For technical questions, please call 1-888-866-5797.
Item 93274
Safety
Assembly Diagram
12
11
17
10
23
32
Setup
29
2
15
3
14
25
26
29
28
30
16
7
24
25
6
13
15
19
31
9
21
20
4
18
8
33
22
Operation
26
27
34
29
29
30
1
Item 93274
For technical questions, please call 1-888-866-5797.
Maintenance
5
Page 19
Limited 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 this product is free from defects in materials and workmanship for the
period of 90 days from the date of purchase. This warranty does not apply to damage due directly or indirectly,
to misuse, abuse, negligence or accidents, repairs or alterations outside our facilities, criminal activity, improper
installation, 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.
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 • 1-888-866-5797