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This procedure is required before the air compressor is put into service and when the check valve or a 
complete compressor pump has been replaced. 

1.  Make sure the Auto/Off switch is in the OFF position. 

2.  Check the oil level in the pump. See the 

Checking

 

Oil

 section in 

Pump

 

Oil

 for instructions. 

3.  Plug the power cord into the correct branch circuit receptacle. (Refer to Voltage and Circuit Protection 

paragraph in the Grounding section of this manual.) 

4.  Open the drain valve (counter-clockwise) fully to permit air to escape and prevent air pressure build-up 

in the air tank during the break-in period.  

5.  Move the Auto/Off switch to the 

“Auto” position. The compressor will start. 

6.  Run the compressor for 30 minutes. Make sure the drain valve and all air lines are open so there is only 

a minimal air pressure build-up in the tank.  

NOTE: After about 30 minutes, if the unit does not operate properly, SHUT IT DOWN IMMEDIATELY, and 
contact Customer Service. 

7.  Check all air line fittings and connections/piping for air leaks by applying a soap solution. Correct if 

necessary. NOTE: Minor leaks can cause the air compressor to overwork, resulting in premature 
breakdown or inadequate performance. 

8.  Check for excessive vibration.  

9.  After 30 minutes, turn the Auto/Off switch to the OFF position. 

10.  Close the drain valve.  

11.  Turn the Auto/Off switch to the AUTO 

position. The air receiver will fill to “cut-out” pressure and the 

motor will stop. The compressor is now ready for use. 

Before Each Start-Up 

WARNING

 

 

Risk of unsafe operation.

 Firmly grasp air hose in hand when installing or disconnecting to prevent 

hose whip. 

 

Risk of unsafe operation.

 Do not use damaged or worn accessories. 

 

Risk of bursting.

 Too much air pressure causes a hazardous risk of bursting. Check the 

manufacturer’s maximum pressure rating for air tools and accessories. The regulator outlet pressure 
must never exceed the maximum pressure rating. 

12.  Place Auto/Off switch to OFF. 

13.  Close the drain valve. 

14.  Visually inspect the air lines and fittings for leaks. 

15.  Check safety valve. See the 

Checking Safety Valve

 section under 

Maintenance

.  

16.  Turn the regulator knob counter-clockwise to set the outlet pressure to zero. 

17.  Attach the hose and accessories. 

NOTE: The hose or accessory will require a quick connect plug. 
 

 

Summary of Contents for NSLA1683066

Page 1: ...c Air Compressor Owner s Manual WARNING Read carefully and understand all ASSEMBLY AND OPERATION INSTRUCTIONS before operating Failure to follow the safety rules and other basic safety precautions may...

Page 2: ...that you read the entire manual to become familiar with this product before you begin using it This air compressor is designed for certain applications only Northern Tool and Equipment is not responsi...

Page 3: ...cting Hoses 13 Installation 13 Lubrication and Oil 13 Compatibility 13 Location 13 Humid Areas 13 Wiring 13 Wiring Instructions 14 Grounding 14 Grounding Instructions 14 Extension Cords 15 Voltage and...

Page 4: ...Motor Pulley Flywheel Alignment 24 Air Compressor Pump Intake and Exhaust Valves 24 Inspect Air Lines and Fittings for Leaks 25 Air Compressor Head Bolts Torqueing 25 Service and Adjustments 25 To Re...

Page 5: ...ner s Manual Compressor Insert Sheet Technical Specifications Property Specification Model NSLA1683066 Weight 165 lb 75 kg Height 48 Width 24 12 Running HP 1 6 Tank Capacity 30 Gallons Voltage Amps Ph...

Page 6: ...ned This product will be safer and do a better job at the capacity for which it was intended DO NOT use this equipment for a purpose for which it was not intended Industrial or commercial applications...

Page 7: ...flation Oil can leak or spill and could result in fire or breathing hazard serious injury or death can result Oil leaks will damage carpet paint or other surfaces in vehicles or trailers Always place...

Page 8: ...e product will operate properly and perform its intended function Replace damaged or worn parts immediately Never operate the product with a damaged part Do not use a product with a malfunctioning swi...

Page 9: ...ormed by authorized service center personnel in accordance with national and local electrical codes Failure to provide adequate grounding to this product could result in serious injury or death from e...

Page 10: ...tion to provide automatic power to the pressure switch and OFF O to remove power at the end of each use NOTE ALWAYS ensure the switch is in the OFF O position before removing or replacing the pressure...

Page 11: ...the regulator and is always less or equal to the air tank pressure 12 Universal Quick Connect Body The universal quick connect body accepts the three most popular styles of quick connect plugs Industr...

Page 12: ...ordered and that it has the required pressure rating for its intended use Attaching Vibration Pads Attach the two vibration pads to the bottom of the compressor feet as shown Installing Hoses WARNING...

Page 13: ...uld cause power loss to the motor THE AIR FILTERS MUST BE KEPT CLEAR OF OBSTRUCTIONS WHICH COULD REDUCE AIR FLOW TO THE AIR COMPRESSOR Humid Areas In frequently humid areas moisture may form in the pu...

Page 14: ...an CHECK with a qualified electrician or service person if you do not completely understand the grounding instructions or if you are not sure the tool is properly grounded Risk of electrical shock In...

Page 15: ...3 blade grounding plug and a 3 slot receptacle that will accept the plug on the product in good condition plug is not worn no longer than 50 feet 15 2 m 12 gauge AWG or larger Wire size increases as g...

Page 16: ...on a 15 amp circuit if the following conditions are met Voltage supply to circuit must comply with the National Electrical Code Circuit is not used to supply any other electrical needs Extension cord...

Page 17: ...motor nameplate and have the conversion completed by a licensed electrician Figure E How to Use Your Unit WARNING Do not operate this unit until you read this instruction manual for safety operation...

Page 18: ...a soap solution Correct if necessary NOTE Minor leaks can cause the air compressor to overwork resulting in premature breakdown or inadequate performance 8 Check for excessive vibration 9 After 30 mi...

Page 19: ...When using the regulator and other accessories refer to the manufacturer s instructions The compressor is ready for use After Each Use WARNING Risk of unsafe operation Firmly grasp air hose in hand w...

Page 20: ...ned water will corrode and weaken the air tank causing a risk of air tank rupture Drain tank to release air pressure before removing the oil fill cap or oil drain plug To ensure efficient operation an...

Page 21: ...f switch is in the OFF position 2 Allow the unit to cool 3 Remove the two outer metal covers A from the base C by pushing in on the cover and turning counter clockwise 4 Check the filter elements B If...

Page 22: ...l capacity is approximately 13 fluid ounces 113 6 ml Checking Oil 1 The oil level is in the middle of the sight glass position E in figure I 2 If needed remove the oil fill plug position D in figure I...

Page 23: ...ing Risk of unsafe operation Unit cycles automatically when power is on When performing maintenance you may be exposed to voltage sources compressed air or moving parts Personal injuries can occur Bef...

Page 24: ...to assure belt retention within the flywheel belt grooves To check alignment perform the following steps 1 Set the Auto Off lever to OFF unplug the unit and relieve all air pressure from the air tank...

Page 25: ...stable wrench loosen the outlet tube nut at air tank and pump Carefully move the outlet tube away from the check valve 4 Using an adjustable wrench loosen the pressure relief tube nut at the air tank...

Page 26: ...to operate accessories Fittings are not secure and tight Tighten fittings where air can be heard escaping Check fittings with soapy water solution DO NOT OVERTIGHTEN Prolonged excessive use of air De...

Page 27: ...t tension See Adjusting Belt Tension under Belt Replacement Belt Tension Motor Pulley Flywheel Adjustment Pump oil is low Add synthetic blend non detergent air compressor oil to pump See Compressor Pu...

Page 28: ...rn Contact an authorized service center Water in pump oil Drain oil and refill pump with synthetic blend non detergent air compressor oil Moisture in pump crankcase Belt too tight Check belt tension S...

Page 29: ...knob has continuous air leak Damaged regulator Replace regulator Regulator will not shut off air outlet Damaged regulator Replace regulator Air tank pressure will not build Regulator open Rotate the...

Page 30: ...uantity 1 125 0175 Belt guard outer wire 1 2 061 0255 Screw 5M x 20mm 5 3 007 0010 V belt 4L 460 1 4 146 0016 Key 1 5 061 0238 Setscrew 5 16 18 2 6 006 0018 Pulley 1 7 059 0012 Bolt 5 16 x 1 2 4 9 125...

Page 31: ...3870 Label warning 1 31 065 0005 Nipple 1 4 x 2 1 2 1 32 026 0030 Cord power 1 33 034 0184 Switch pressure includes items 36 41 and 42 1 34 032 0025 Gauge 300 1 4 bottom connect 1 35 136 0077 Valve AS...

Page 32: ...042 0121 Head cylinder 2 6 046 0302 Gasket cylinder head 2 7 043 0207 Valve plate assembly includes items 6 and 8 2 8 046 0303 Gasket cylinder 2 9 019 0305 Filter assembly includes item 9A 2 9A 019 03...

Page 33: ...y not shown 1 36 165 0277 Overhaul kit includes items 6 8 9A 10 18 27 and 28 1 37 046 0307 Gaskets complete set includes items 6 8 18 27 and 28 1 38 S040 0469 Pump assembly includes items 1 40 1 39 06...

Page 34: ...failed due to lack of proper maintenance If a part is no longer available the part may be replaced with a similar part of equal function Any misuse abuse alteration or improper installation or operat...

Page 35: ...inadequate egress Damage caused by incorrect voltage improperly wired or failure to have a certified licensed electrician install the compressor will render this warranty null and void Damage caused...

Page 36: ...Page 36 of 36 Distributed by Northern Tool Equipment Company Inc Burnsville Minnesota 55306 www northerntool com Made in U S A of Domestic and Foreign Parts 200 3151 A_5 2 19...

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