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WARNING: Overheating  

This compressor is equipped with “auto shut off”. 
However, failure to allow adequate cooling ventilation or 

a restriction in the intake airflow may cause the 
machine to overheat.  

 

WARNING: Inflatables/Low PSI tire 

Never use compressor to inflate small low-pressure 
objects, i.e., balloons/inflatables, small or low volume 

PSI tires. It is easy to over-pressurize them, causing 
them to rupture. Identify the inflation capacity of an 
object prior to filling it with air. Use a gauge to check the 
pressure regularly when inflating anything. 

 

Proper Air Hose and Tool Use 

 

Pressure Control Related Devices 

Never remove, adjust, bypass, change, modify or make 

substitutions for safety/relief valves, pressure switches 
or other pressure control related devices. Pressurizing 
beyond the limits of the compressor could result in an 
explosion. 

 

WARNING: Overpressurization hazard 

NEVER over-pressurize the receiver tank or air tools 
beyond nameplate capacity. Exceeding the pressure 
rating could cause them to explode or fly apart. 

Compressor - Tool Requirements  

 

Compressor and attachments must be sized properly 

for pressure and air volume. 

 

 

Consider the maximum pressure requirements and 
air volume requirements of each. (The volume rating 
of your compressor is listed in the “

Specifications

” 

section.)  

 

 

 

CAUTION: Tool overpressure hazard 

Do not operate this unit with any tool rated less than the 

maximum operating pressure of the unit (135 PSI) 
unless a properly sized regulator limiting pressure is 
used before the tool.   

 

Attaching/Disconnecting Air Hose and Tools 

 

CAUTION: High pressure stream hazard 

High-pressure air stream can pierce skin and underlying 
tissues, leading to serious injury and possible 

amputation. Such an injection injury can result in blood 
poisoning and/or severe tissue damage. High-pressure 
air stream can also cause flying debris and possible 
surface damage. 

 

 

 

CAUTION: Air tools hazard 

Do not attach air tools to open end of the hose until 
start-up is completed and the unit checks out OK. 

Quick Connect Procedure: 

 

Keep finger off tool or activation switch until ready 

to use. 

 

Pull quick connect collar back (Figure 14a). 

 

Push hose or attachment firmly against stop.   

 

Let go of collar (Figure 14a). 

 

Pull and rotate slightly (hose or attachment) to 
assure a tight connection. 

 

WARNING: Projectile hazard 

Air tool or attachment can become a projectile and 

cause serious personal injury or damage if not securely 
attached to the air hose.  

 

 

Figure 14a 

 

 

 

Figure 14b                                  Figure 14c 

 

 

 

 

Using Compressor for Spraying 

 

Flammable Materials 

Always follow precautions on container labels or “SDS” 
before spraying flammable materials, such as paint. 

 

Moisture in Compressed Air 

Moisture in supply air when compressed will form into 

droplets as it leaves air compressor pump and enters 
receiver tank. When humidity is high or when a 
compressor is in continuous use for an extended period 

of time, a significant amount of moisture will collect in 
the tank. Part of the moisture will be discharged in the 
outlet air. 

 

When using a paint spray or sandblast gun, this water 
will be carried from the tank through the hose, and out of 
the gun as droplets mixed with the spray material. If this 
is not acceptable for your application, an external air 

dryer must be added to the system. 

     Collar 

Coupler

 

 
 

Quick Disconnect 

Socket 

  

Correct 

Insertion 

Not Fully 

Inserted 

Collar Seated 

Collar NOT Seated 

Tool 

Содержание M51481A

Страница 1: ... breathing unless air is treated in accordance with applicable standards Fire Explosion Sparks from air powered tool heads or attachments can ignite fuel or other flammable liquids or vapors in the vicinity Exceeding the maximum pressure for air tools or attachments could cause them to explode Burns Compressor pump motor and discharge tubing are hot surfaces that can cause burn injuries Electric S...

Страница 2: ... Hose and Tool Use 11 Pressure Control Related Devices 11 Compressor Tool Requirements 11 Attaching Disconnecting Air Hose and Tools 11 Using Compressor for Spraying 11 Flammable Materials 11 Moisture in Compressed Air 11 Shutdown 12 Procedure 12 For Malfunction During Operation 12 Maintenance Repair 13 Maintenance Schedule Summary 13 Detailed Instructions Maintenance Repair 13 Inspect Safety Reli...

Страница 3: ...peration including safety glasses with side and top protection Adult Control Only Only trained adults should set up and operate the air compressor Do not let children operate Under The Influence Never operate or let anyone else operate the air compressor while fatigued or under the influence of alcohol drugs or medication Keep this manual for reference and review ATTENTION Rental Companies and Pri...

Страница 4: ...Amps Battery Size minimum 50 Ah Horsepower 3 4 HP Maximum Working Pressure 135 PSI Volume Rating 0 85 CFM 135 PSI 1 30 CFM 90 PSI 2 00 CFM 40 PSI Continuous Use 72 F 100 PSI 60 Minutes Maximum Ambient Temperature 122 F Minimum Ambient Temperature 14 F Noise Decibel Level 77 dBA Dimensions in 14 2 L x 13 W x 12 2 H Weight lbs 31 5 ...

Страница 5: ...d dry air supply this filter must always be clean and the ventilation opening free from obstructions 7 Tank Drain Valve The tank drain valve is used to remove moisture from the air after the compressor is shut off and the air is emptied from the tank Drain the moisture daily after each use 8 Cable with Alligator Clip The cable has been connected to a 10AWG fuse holder with 50A fuse Connect the RED...

Страница 6: ...ous situation which if not avoided will result in death or serious injury WARNING orange indicates a hazardous situation which if not avoided could result in death or serious injury CAUTION yellow used with the safety alert symbol indicates a hazardous situation which if not avoided could result in minor or moderate injury CAUTION yellow without the safety alert symbol is used to address practices...

Страница 7: ...label is missing or not legible order new labels from NorthStar Product Support at 1 800 270 0810 On Product Warning Labels Location Part numbers Description 1 792177 Corrosion Hazard 2 789060 Electrical Shock Hazard 3 792174 Breathing Hazard 4 795003 Name Plate 5 795004 Pressure Switch On Off 6 794971 Heat Warning 1 2 3 4 5 6 ...

Страница 8: ...8 Safety Decals To order replacement safety labels call NorthStar Product Support at 1 800 270 0810 1 2 3 4 5 6 ...

Страница 9: ...zed since it will slide or shift during operation if not secured Place the compressor as CLOSE TO THE BATTERY as possible so the length of lead wire required is kept to a minimum Airflow Provide access to adequate clean and unobstructed airflow for cooling and air supply Remember the supply air is passing through the compressor supply hoses and tools These can be damaged or have a shortened life i...

Страница 10: ...ular maintenance has been performed as prescribed in Maintenance Repair section Drain receiver tank of any moisture Check for any unusual noise vibration Ensure the area around compressor is free from rags tools debris and flammable or explosive materials Ensure covers are securely in place WARNING Entanglement hazard Do NOT operate with protective covers or guards removed Beneath these covers are...

Страница 11: ...ream hazard High pressure air stream can pierce skin and underlying tissues leading to serious injury and possible amputation Such an injection injury can result in blood poisoning and or severe tissue damage High pressure air stream can also cause flying debris and possible surface damage CAUTION Air tools hazard Do not attach air tools to open end of the hose until start up is completed and the ...

Страница 12: ...ure buildup in the air tank Serious injury or death may occur from a tank explosion caused by moisture induced tank corrosion For Malfunction During Operation Immediately turn off the compressor if any of the following conditions arise during operation Excessive change in motor speed slow or fast Overheating Excessive vibration Unusual noise Flame or smoke Air leakage Pull ring on safety valve to ...

Страница 13: ...ure rating Inspect Air Filter Inspect the compressor s air filter on a weekly basis A dirty air filter will not allow the air compressor to operate at full capacity Clean air filter if dirty and restricted air flow Replace every 12 months or 1000 hours whichever comes first Note Do not operate with the air filter removed Keep Compressor Clean Do not allow air intakes to become blocked If dust or d...

Страница 14: ...arge Excessive water in air tank Drain tank tilt tank to drain Drain tank more frequently High ambient temperature and or humidity Move compressor to area with less humidity or use airline filter Compressor runs continuously causing safety relief valve to open Defective pressure switch or improper adjustment Check for proper adjustment and if problem persists replace pressure switch Defective safe...

Страница 15: ...15 Parts List Model 51481 Rev A ...

Страница 16: ... Front cover gasket 1 16 794959 Air filter set 1 17 N A Filter element 1 18 794960 Bolt 4 19 N A Air tank 1 20 794961 Rubber pad set 4 21 N A Hexagon bolt set 4 22 N A Body seat block 4 23 794962 Grip 1 24 788886 Drain Valve 1 25 N A Plug 2 26 N A Check valve 1 27 N A Unloading elbow 1 28 N A Unloading tube set 1 29 N A Soft tube 1 30 794963 Pressure switch 1 31 794964 Safety relief valve 150 psi ...

Страница 17: ...equal function Any misuse abuse alteration or improper installation or operations will void warranty Determining whether a part is to be replaced or repaired is the sole decision of NorthStar NorthStar will not provide for replacement of complete products due to defective parts Any costs incurred due to replacement or repair of items outside of a NorthStar approved facility is the responsibility o...

Страница 18: ...18 Distributed by Northern Tool Equipment Company Inc Burnsville MN 55306 www northerntool com Made in Taiwan ...

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