1 m51481a owner’s manual 12v dc portable air compressor instructions for installation/set-up, operation, maintenance & storage this northstar® compressor has a single-stage, single-cylinder pump made with a heavy-duty cast iron cylinder for long life, and a compact design rated for 135 maximum psi. ...
2 table of contents equipment protection quick facts ........................................................................................................................................ 1 table of contents .............................................................................................
3 about your air compressor thank you for purchasing a northstar air compressor! It is designed for long life, dependability, and top performance. Intended use. Provides compressed air used primarily for operating air tools and pressurizing other objects that require high air pressure, such as tires...
4 specifications item # 51481 tank size 1 gallon motor voltage 12 volts dc maximum current consumption 36 amps recommended fuse 50 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 ...
5 component identification 1. Pressure switch - auto/off switch: in the auto position, the compressor shuts off automatically when the tank pressure reaches the maximum preset pressure. In the off position, the compressor will not operate. The switch should be in the off position when connecting or ...
6 safety signal words hazard signal word definitions danger warning caution caution notice 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. Danger (red) indicates a hazar...
7 safety labeling safety decal locations warning: always make sure safety labels are in place and in good condition. If a safety 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 co...
8 safety decals to order replacement safety labels, call northstar product support at 1-800-270-0810. 1 2 3 4 5 6.
9 initial set-up step 1. Inspect & unpack upon receipt, inspect air compressor for missing or damaged parts. Verify that it is the compressor you ordered. See “component identification” section of this manual for a diagram of the compressor and its components. For missing or damagedcomponents, pleas...
10 operation follow operation safety rules before starting the compressor, review the safety rules found below and throughout the manual. Warning failure to follow safety rules may result in serious injury or death to the operator or bystanders. Instruct operators. Owner must instruct all operators ...
11 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...
12 shutdown procedure when you are finished using the compressor: 1. Move the pressure switch to the off position. 2. Operate tool briefly to release system pressure. 3. Disconnect all tools. 4. Drain air receiver tank by pulling safety relief valve. 5. After all air is discharged from receiver tank...
13 maintenance & repair warning: maintenance hazards always disconnect, lock out and tag the main power supply and then release air pressure from the receiver tank before cleaning, adjusting, or servicing the compressor. Make sure all guards and shields are replaced before re-starting. Maintenance s...
14 troubleshooting this section provides a list of the more frequently encountered compressor malfunctions, their causes and corrective actions. Some corrective actions can be performed by the operator or maintenance personnel, but others may require assistance of a qualified electrician or service ...
15 parts list – model 51481 rev a.
16 parts list – model 51481 rev a ref# part# description qty 1 794951 cylinder head 1 2 794952 allen bolt set 4 3 794953 plug 1 4 794954 exhaust elbow 1 5 794955 cylinder head gasket 1 6 794956 exhaust valve seat assembly 1 7 794957 valve seat gasket 1 8 n/a cylinder liner 1 9 n/a cylinder 1 10 n/a ...
17 limited warranty dear valued customer: the northstar product you just purchased is built with the finest material and craftsmanship. Use this product properly and enjoy the benefits from its high performance. By purchasing a northstar product, you show a desire for quality and durability. Like al...
18 distributed by: northern tool & equipment company, inc. Burnsville, mn 55306 www.Northerntool.Com made in taiwan.