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Electric Stationary Air Compressor 

Installation, Operation and Maintenance Manual

 

 

To the Owner: 

Thank you for purchasing a NorthStar Air Compressor.  Your machine is designed for long life, dependability, and 
the  top  performance  you  demand!    Please  take time now to read through this manual so you better understand 
the machine’s operation, maintenance and safety precautions.  Everyone who operates this machine must read 
and understand this manual.  The time you take now will pro

long your machine’s life and prepare you for its safe 

operation.  Enjoy the exceptional performance of your NorthStar Air Compressor, the industry leader! 
The  manufacturer  reserves  the  right  to  make  improvements  in  design  and/or  changes  in  specifications  at  any 
time without incurring any obligation to install them on units previously sold. 

 

Quick Facts 

Pump Oil 

Check pump oil level before starting. 
Use Non-detergent pump oil (part #35605). 

Air Filter 

Make sure your air filter is clean and particle free.  
Replacement air filter (part #35409). 

Maximum 
Pressure 

Maximum pressure = 175 psi 
 

Maintenance 
Schedule 

Tank: 

Drain water daily. 

 

Compressor 
Pump: 

Oil: change after first 50 hours, then every 3 months or 500 hours. 

Read and understand all manuals before operating.

 

 
 
 

 

 

Any Questions, Comments, Problems, or Parts Orders 

Call NorthStar Product Support 1-800-270-0810 

M459231B.1 

     

459231; 5 HP Leeson, 19.2 PSC, 80 gal. 

459241; 7.5 HP Leeson, 29.5 PSC, 80 gal.

 

M35643K.2 

®

Summary of Contents for M459231B.1

Page 1: ...ssor the industry leader The manufacturer reserves the right to make improvements in design and or changes in specifications at any time without incurring any obligation to install them on units previously sold Quick Facts Pump Oil Check pump oil level before starting Use Non detergent pump oil part 35605 Air Filter Make sure your air filter is clean and particle free Replacement air filter part 3...

Page 2: ...spirator and safety glasses when spraying ALWAYS wear eye protection when operating or servicing compressor BREATHING AIR PRECAUTION NorthStar air compressors are not designed intended or approved for breathing air Compressed air should not be used for breathing air applications unless treated in accordance with all applicable codes and regulations Receipt and Inspection Ensure adequate lifting eq...

Page 3: ...lows release of pressurized air between the tank and compressor so motor does not start under load 10 Pressure Switch Auto Off Switch In the auto position the compressor shuts off automatically when tank pressure reached the maximum preset pressure In the off position the compressor will not operate This switch should be in the off position when connecting or disconnecting the power cord from the ...

Page 4: ...C Use pipe thread sealant on all threads and make up joints tightly to prevent air leaks Main Air Distribution Line The main compressed air distribution line should be of sufficient size to minimize the pressure drop between the air supply and the point of use Slope the piping downward in the direction of air flow to aid in the removal of condensation at all drain points along the line The piping ...

Page 5: ...l load must be considered in selecting the proper wire size Do not use undersized wire NOTE On units requiring a motor starter connect line power to the starter DO NOT connect the line power to the pressure switch Model 459241 Side View Motor Starter Magnetic Starter If the motor installed on your compressor has a motor reset button it does not require a magnetic starter If the motor does not have...

Page 6: ...nthetic lubricants CAUTION If you will be using synthetic lubricant all downstream piping material and system components must be compatible Suitable Viton Teflon Epoxy Glass Filled Oil Resistant Alkyd Fluorosilicone Flourocarbon Polysulfide 2 Component Urethane Nylon Delrin Celcon High Nitrile Rubber Buna N NBR more than 36 Acrylonite Polyurethane Polyethylene Epichlorohydrin Polyacrylate Melamine...

Page 7: ...onthly Inspect for air leaks Squirt soapy water around joints during compressor operation and watch for bubbles Tighten fittings if necessary Clean exterior 3 months or 500 hours Change pump oil while crankcase is warm 12 months or 1000 hours Replace air filter element DRIVE BELT Belts will stretch in normal use Properly adjusted a 5 pound force applied to the belt between the motor pulley and the...

Page 8: ...8 Exploded View Rev B 1 Model 19 2 PSC Item 459231 Model 29 5 PSC Item 459241 ...

Page 9: ...34745 1 30 1 4 NPT Bulkhead Fitting ALL 34744 1 31 1 4 NPT Water Drain ALL 35413 1 32 Warning Decal ALL 783510 1 33 NorthStar Decal ALL 783511 1 34 1 4 NPT Hex Nipple ALL 34738 1 Item Description Model Part Qty 35 2 Air Gauge ALL 34710 1 36 1 4 NPT Plug ALL 2249 1 37 Pressure Switch Unloader ALL 35123 1 38 Dome Cap 459241 35417 1 39 Safety Relief 200 psi ALL 35121 1 40 Strain Relief 12 3 Rt Angle ...

Page 10: ...01 1 22 Crankcase Gasket AB4950101 1 23 Crankshaft AB4961200 1 24 Nut AB9128234 4 25 Oil Seal AB9163010 1 26 Cover D E AB2060590 1 Item Description Part Qty 27 Cover Bolt M6 x 15 SHCS AB9101094 8 28 Flywheel 350 mm AB3600100 1 29 Flywheel washer AB9004008 1 30 Screw Reverse Thread AB9110014 1 31 Half Bearing AB9013011 4 32 Connecting Rod AB4011101 2 33 Wrist Pin AB4621200 1 34 H P Piston Aluminum ...

Page 11: ...kcase Pan AB6061301 1 26 Lower Crankcase Gasket AB6050101 1 27 Crankshaft AB6061200 1 28 Rod Nut AB9128234 4 Item Description Part Qty 29 Oil Seal AB9163030 1 30 Cover D E AB6061590 1 31 Cover Bolt M6 x 15mm SHCS AB9101154 8 32 Flywheel 430 mm AB5000100 1 33 Flywheel washer AB9004009 1 34 Screw Reverse Thread AB9110024 1 35 Half Bearing AB9013014 4 36 Connecting Rod AB6011101 2 37 Rod Bolt AB91062...

Page 12: ...Ensure good contact on motor terminals or starter connections F Compressor viscosity too high for ambient temperature Drain existing lubricant and refill with proper lubricant G Poor ground Check all ground connections H Belt tension too tight or sheaves not aligned Check tension alignment I Air leaks in discharge piping Check tubing connections Tighten joints or replace as required J Poor power r...

Page 13: ...uch as engines are guaranteed by their manufacturer and can be serviced at factory authorized locations near you Any costs incurred due to replacement or repair of items outside of a NorthStar approved facility is the responsibility of the buyer and not covered under warranty NorthStar can supply you with the service center location in your area This warranty specifically excludes the following fa...

Page 14: ...14 Manufactured by Northern Tool Equipment Co 2800 SouthCross Drive West P O Box 1499 Burnsville MN 55337 0499 ...

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