McGRAW 58144 10 Gallon Oil Lube Portable Air Compressor Owner’s Manual

McGRAW 58144 10 Gallon Oil Lube Portable Air Compressor

Warning: Read this material before using this product. Failure to do so can result in serious injury. SAVE THIS MANUAL. 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.

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.
|

Addresses practices not related to personal injury.

General Safety Warnings

The 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.

1. Work area safety
2. Keep work area clean and well lit. Cluttered or dark areas invite accidents.
3. Do not operate the compressor in explosive atmospheres, such as in the presence of flammable liquids, gases or dust. Compressor motors produce sparks that may ignite the dust or fumes.
4. Keep children and bystanders away from an operating compressor.
5. Electrical safety
6. 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.
7. Do not expose compressor to rain or wet conditions. Water entering a compressor will increase the risk of electric shock.
8. Do not abuse the cord. never use the cord for unplugging the compressor. Keep cord away from heat, oil, sharp edges or moving parts. Damaged or entangled cords increase the risk of electric shock.
9. Personal safety
10. 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.
11. Use personal protective equipment. always wear ANSI-approved eye protection during setup and use.
12. prevent unintentional starting. ensure the switch is in the off-position before connecting to power source or moving the compressor.
13. Compressor use and care
14. 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.
15. 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.
16. 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.
17. 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.
18. 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.
19. Service
20. 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.

Air compressor Safety Warnings

• 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.
• risk of bursting – do not adjust regulator higher than the marked maximum pressure of attachment.
• risk of injury – do not direct airstream at people or animals.
• Do not use to supply breathing air.
• Do not leave the compressor unattended for an extended period while plugged in. Unplug the compressor after working. Keep compressor well-ventilated.
• Do not cover the compressor during use.
• Drain Tank daily and after use. Internal rust causes tank failure and explosion.
• Add the correct amount of compressor oil before first use and every use. Operating with low or no oil causes permanent damage and voids the warranty.
• Do not remove the valve cover or adjust internal components.
• The compressor head gets hot during operation. Do not touch it or allow children nearby during or immediately the following operation.
• Do not use the air hose to move the compressor.
• Release the pressure in the storage tank before moving.
• The use of accessories or attachments not recommended by the manufacturer may result in a risk of injury to persons.
• 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.
• USE OF AN EXTENSION CORD IS NOT RECOMMENDED. If you choose to use an extension cord, use the following guidelines:

taBle a: 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.

• * Make sure your extension cord is in good condition.

  • Be sure to use an extension cord that 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.
• Industrial applications must follow OSHA guidelines.
• Maintain labels and nameplates on the compressor. These carry important safety information. If unreadable or missing, contact Harbor Freight Tools for a replacement.
• This product is not a toy. Keep it out of reach of children.
• Operate unit on level surface. Check oil level daily and fill to marked level if needed.
• People with pacemakers should consult their physician(s) before use. Electromagnetic fields in close proximity to heart pacemakers could cause pacemaker interference or pacemaker failure.

Grounding

Warning: 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 proper outlet installed by a qualified electrician. 110-120 Vac 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 equipment-grounding 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.

7. This compressor is intended for use on a circuit that has an outlet that looks like the one illustrated above in 125 Vac 3-prong plug and Outlet. The compressor has a grounding plug that looks like the plug illustrated above in 125 Vac 3-prong plug and Outlet.

8. The outlet must be properly installed and grounded in accordance with all codes and ordinances.

9. Do not use an adapter to connect this compressor to a different outlet.

Symbology

Specifications

Electrical Rating| 120VAC / 60Hz / 14A

(Dedicated circuit recommended)

---|---
Air Outlet Size| 1/4″ -18 NPT
Air Pressure| Shut-off| 135 PSI
Restart| 105 PSI
Air Tank Capacity| 10 Gallons
Air Flow Capacity| 4.0 SCFM @ 90 PSI
Sound Level| 85 dBA @3’
Oil Capacity| 5.6 oz.
Oil Type| SAE 30W non-detergent air compressor oil

Installation

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.

Warning: To prevent Serious injury From accidental Operation:
Turn the power Switch “OFF” and unplug the air compressor from its electrical outlet before 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

Attach tires

1. Slide Small Washer (92) and Sleeve (94) onto Bolt (95), then insert Bolt through Tire.
2. Slide Large Washer (105) onto Bolt, then slide Bolt through hole in bracket.
3. Secure Bolt with Large Washer and Nut (91), tighten securely.
4. Repeat for other Tire.

Attach Handle

Attach Handle (104) to Tank with Handle Knobs (102).

Install air Filter

Thread the Air Filter onto the side of the Pump/Motor Assembly.

Checking the Oil

1. Check the oil level before operation. Fill the Pump Crankcase with included SAE 30W, non-detergent, Air Compressor Oil.
   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. Add oil as needed to maintain this level. Do not let the oil level go below the center dot and do not overfill the oil so that it is above the center dot.

3. To add oil:

4. Remove the Oil Breather.

5. Using a funnel to avoid spills, pour enough oil into the Pump Crankcase to reach the “full” level in the Oil Sight Glass.

6. Replace the Oil Breather.
   note : SAE 30W, non-detergent, Air Compressor Oil (sold separately) is recommended for use with this compressor.

7. If uncertain which oil to use for this compressor, call Harbor Freight Tools customer service at 1-888-866-5797 for assistance.

8. change the compressor oil after the first hour of use to remove any debris.
   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.

Breaking in the compressor

1. Turn the Power Switch OFF and unplug Power Cord.
2. Fully open Drain Valve.
3. Plug in the Power Cord.
4. Turn the Power Switch ON.
5. Let the unit run for 30 minutes. Air will expel freely through the Drain Valve.
6. Turn the Power Switch OFF.
7. Unplug the Power Cord and close Drain Valve.

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 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.

2. Check for oil leaks and check the oil level (See Checking the Oil on page 8).

3. Close the in-line Shutoff Valve between the compressor and the air hose.

4. Plug the Power Cord into a grounded 120 VAC electrical outlet.

5. Pull the ring on Safety Valve to release pressure.

6. Turn the Power Switch to AUTO.

7. 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 105 PSI, and will turn off automatically when the air pressure reaches 135 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.

8. Adjust the Regulator 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.

9. Make sure the air tool’s throttle or switch is in the off position. Connect the air tool to the air hose.

10. Open the in-line Shutoff Valve.

11. Use the air tool as needed.

12. After the job is complete, turn the Power Switch OFF.

13. Unplug the Air Compressor.

14. Close the in-line Shutoff Valve.

15. Bleed air from the tool then disconnects the tool.

16. Drain Tank according to Draining Moisture from the tank on page 11.

17. Clean, then store the Air Compressor indoors.

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 to quickly release stored air pressure.

automatic Shut off System

1. If the Compressor automatically shuts off before reaching its normal cutoff pressure:
2. Shut off all tools.
3. Turn Power Switch OFF
4. Unplug Compressor and wait until the Compressor cools down (about 10 minutes);
5. Plug in Compressor.
6. Turn Power Switch ON.
7. Resume operation.
8. Possible causes of repeated automatic shut off of the compressor are:
9. Using an extension cord that is too long or narrow;
10. An air leak or open hose causing the compressor to cycle too often and build up heat.
11. Turning Air Compressor off and on again too quickly.

Maintenance and Servicing

procedures not specifically explained in this manual must be performed only by a qualified technician.

cleaning, maintenance, and lubrication

1. BeFOre eacH USe, inspect the general condition of the air compressor. Check for:
2. loose hardware,
3. misalignment or binding of moving parts,
4. cracked or broken parts,
5. damaged electrical wiring, and
6. any other condition that may affect its safe operation.
7. aFter USe, wipe external surfaces of the compressor with a clean cloth.
8. WarninG! tO preVent SeriOUS inJUry: if the supply cord 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.
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:

• Check oil level.
• Check for oil leaks.
• Make sure all nuts and bolts are tight.
• Drain moisture from air tank.
• Check for abnormal noise or vibration.
• Check for air leaks.*
• Wipe off any oil or dirt from the compressor.

Weekly:

• Inspect Air Filter.
• Inspect Oil Breather.

Monthly:
Inspect Safety Valve.

every 6 months or 100 Operation Hours:
Replace Pump oil.

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 operation hours, whichever comes first. Replace the oil more frequently if compressor is used in harsh environments such as high heat or high humidity.
caUtiOn! tO preVent inJUry FrOM BUrnS: allow air compressor to cool before changing the oil.

1. Place a container under the Oil Drain Bolt.
2. Remove the Oil Breather to allow air flow into the Pump.
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.
5. Fill the Pump with new SAE 30W, non-detergent, Air Compressor Oil to the FULL level on the Oil Sight Glass (5.6 oz.).
6. Replace and tighten the Oil Breather.
7. Discard the old oil according to local, state and federal regulations.

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. Turn the Power Switch off.
2. Place a collection pan under the Drain Valve.
3. Turn the Drain Valve to open it. Tilt Compressor forward to drain.
4. When all the pressure and moisture are released, close the Drain Valve.

air Filter Maintenance

1. Remove Air Inlet Filter by turning it counterclockwise.
2. Remove Cover from Air Inlet Filter.
3. Check Filter for accumulated dirt.
4. To prevent injury from dust and debris, wear ANSI-approved safety goggles, NIOSH-approved dust mask/respirator, and heavy-duty work gloves. In a well-ventilated area away from bystanders, use pressurized air (no more than 15 PSI) to blow dust out of the filter.
5. Replace the clean filter. Replace the Cover, the replace the Air Inlet Filter.

Troubleshooting

2.     Power cord not plugged in properly.

3.     Incorrect power supply.

4.     No power at outlet.

5.     Building power supply circuit tripped or blown fuse.

6.     Cord wire size is too small or cord is too long to properly power compressor.

7.     Compressor needs service.

| 1.   No problem. Compressor will start when needed.

2.   Check that cord is plugged in securely.

3.   Check that circuit matches compressor requirements.

4.   Reset circuit breaker, or have outlet serviced by a qualified technician.

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.   Use larger diameter or shorter extension cord or eliminate extension cord. See Recommended Wire Gauge for Extension Cords in Safety section.

7.   Have unit inspected by a qualified technician.

Compressor builds pressure too slowly| 1.     Incorrect power supply.

2.     Crankcase oil overfilled or oil too thick.

3.     Working environment too cold.

4.     Safety valve leaking.

5.     Loose fittings.

| 1.   Check that circuit matches compressor requirements.

2.   Drain oil and refill to proper level with recommended oil.

3.   Move compressor to a warmer location. Check that recommended oil is in crankcase.

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.   Reduce air pressure, then check all fittings with a soap solution for air leaks and tighten as needed. Do not overtighten.

Compressor not building enough air pressure| 1.   Air filter needs cleaning.

2.   Check Valve needs service.

3.   Compressor not large enough for job.

4.   Loose fittings.

5.   Hose or hose connections too narrow.

6.   Crankcase oil too thick.

7.   High altitude reducing air output.

| 1.   Check air filter and clean as needed.

2.   Have technician clean or replace, as needed.

3.   Check if accessory CFM is met by Compressor.

If Compressor cannot supply enough

air flow (CFM), use a larger Compressor.

4.   Reduce air pressure, then check all fittings with a soap solution for air leaks and tighten as needed. Do not overtighten.

5.   Replace with wider hose and/or hose connections.

6.   Drain oil and refill to proper level with recommended oil.

7.   Higher altitudes require compressors with greater output.

Overheating| 1.   Air filter needs cleaning.

2.   Crankcase oil too thin or incorrect type.

3.   Crankcase oil level too low.

4.   Unusually dusty environment.

5.   Extension cord used.

6.   Unit not on level surface.

| 1.   Check air filter and clean as needed.

2.   Drain oil and refill to proper level with recommended oil.

3.   Add oil to proper level, check for leaks.

4.   Clean filter more often or move unit to cleaner environment.

5.   Eliminate extension cord.

6.   Reposition unit on a level surface.

Compressor starts and stops excessively| 1.   Loose fittings.

2.   Compressor not large enough for job.

| 1.   Reduce air pressure, then check all fittings with a soap solution for air leaks and tighten as needed. Do not overtighten.

2.   Check if accessory CFM is met by Compressor.

If Compressor cannot supply enough

air flow (CFM), use a larger Compressor.

Follow all safety precautions whenever diagnosing or servicing the compressor. Disconnect power supply before service.
problem| possible causes| l ikely Solutions
---|---|---
Excessive noise| 1.   Loose fittings.

2.   Crankcase overfilled with oil or oil is incorrect thickness or type.

3.   Crankcase oil level too low.

4.   Unit not on level surface.

| 1.   Reduce air pressure, then check all fittings with a soap solution for air

leaks and tighten as needed. Do not overtighten.

2.   Drain oil and refill to proper level with recommended oil.

3.   Add oil to proper level, check for leaks.

4.   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.

2.   Unit not on level surface.

3.   Crankcase vent clogged.

| 1.   Drain oil and refill to proper level with recommended oil.

2.   Reposition unit on a level surface.

3.   Clean Crankcase vent.

Follow all safety precautions whenever diagnosing or servicing the compressor. Disconnect power supply before service.

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. Specify UPC 193175432872 when ordering parts.

Parts List And Diagram

Assembly Diagram

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.

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