North Star M157593E Owner'S Manual Download Page 9

Special Equipment Safety Features 

 

High Pressure 
Relief Valve 

     WARNING-If the high-pressure relief valve ever discharges water, 
turn the engine off and do not use the machine.  The valve will no longer 
function properly.  See a dealer or call Product Support at 1-800-270-
0810.

 

 

This unit is equipped with a high-pressure relief valve, which acts as a backup 
safety feature.  If the unloader malfunctions, the high-pressure relief valve 
will open and relieve excess system pressure. 
 

High 
Temperature 
Limit 

This unit is equipped with a high temperature limit that measures discharge 
spray temperature and automatically turns the burner off when the 
temperature setting is reached.  When the discharge spray temperature drops, 
the burner automatically reignites. 

Thermal Relief 
Valve 

This unit is equipped with a thermal relief valve to protect the pump from 
overheating.  The pump continues to work in bypass mode when you are not 
spraying.  If high temperatures are developed during bypass mode, the 
thermal relief valve will open and discharge hot water onto the ground, 
protecting the pump from overheating.  The thermal relief valve is located on 
the unloader bypass port. 

Spray Gun Safety 
Latch 

The spray gun is equipped with a built-in trigger safety latch to guard against 
accidental trigger actuation. 
 
 
 
 
 

00417

 

Safety Latch 

 

FIG02330 

FIG02329

 

High Pressure  
Relief Valve

 

Summary of Contents for M157593E

Page 1: ...luding injection injury if fluid pierces the skin Injection injury can result in blood poisoning and or severe tissue damage Burns Hot spray can scald and burn skin Hot surfaces of wand engine and bur...

Page 2: ...ements Make sure your supply water flow rate is 20 higher than the pressure washer s flow rate see Specifications section for detail and that your water is clean and particle free Storage Do not allow...

Page 3: ...Step 4 Battery Installation 15 Moving and Towing 16 Before Each Use 18 Step 1 Check Equipment 18 Step 2 Add Fuel s 19 Step 3 Select a Suitable Worksite 21 Operation 23 Step 1 Connect Hose s Water Supp...

Page 4: ...this pressure washer Safety apparel includes waterproof insulated gloves safety glasses with side and top protection and non slip protective footwear Some cleaning chemicals may require the use of a...

Page 5: ...ze 2 SUPPLIES REQUIRED not included Engine Fuel Burner Fuel 1 or 2 Diesel Capacity 13 Gal Engine Oil See Engine Owner s Manual Pump Oil shipped with oil but refills required 25 Oz Oil Capacity SAE 30...

Page 6: ...Inlet Plumbing 12 Water Inlet city tap water trailer models use hose reel 20 Heat Switch 4 Pump 21 Thermostat 5 Belt Guard 13 Throttle Control 22 Indicator Light Power 6 Engine see engine manual 14 Fu...

Page 7: ...11 Engine Key Switch Start engine by turning clockwise 12 Water Inlet city tap water Used to connect city tap water to the inlet plumbing 13 Throttle Control Changes engine speed 14 Control Panel Fla...

Page 8: ...on Do not allow any part of the body to come in contact with the fluid stream Gun kicks back hold with two hands Keep good footing and balance at all times Surfaces of engine burner and wand can becom...

Page 9: ...ay temperature and automatically turns the burner off when the temperature setting is reached When the discharge spray temperature drops the burner automatically reignites Thermal Relief Valve This un...

Page 10: ...e 2 Overview of Pressure Washer Components and Figure 3 Hardware Bag Inspect the power washer immediately after you receive delivery for missing parts and damage If you have missing components contact...

Page 11: ...2 x 5 Bolt Qty 1 Part 82119 1 2 x 4 Bolt Qty 2 Part 82250 5 8 x 1 1 2 Bolt Qty 4 Part 82251 5 8 Class G Nut Qty 4 Part 82288 3 8 x 1 Bolt Qty 3 Part 82023 3 8 Flat Washer Qty 3 Part 82028 3 8 Lock Nut...

Page 12: ...ck down until A frame becomes level parallel to ground 7 Attach A frame to trailer frame with six 5 8 bolts Class G nuts and washers Tighten to 180 ft lbs Use a torque wrench 8 Check trailer light wir...

Page 13: ...en slide the other cable onto the bolt followed by another washer then the lock nut Tighten to 37ft lbs 16 Attach truck chest to A frame with four 5 16 x 1 bolts lock nuts and washers Place a flat was...

Page 14: ...ow See Specifications section of this manual to determine the type of pump that came equipped with this pressure washer a For Comet or NorthStar pumps Use Universal Tractor Transmission Oil or Non det...

Page 15: ...al battery safety rules and instructions listed below General Battery Safety Rules ALWAYS use eye protection and protective clothing when handling batteries NEVER smoke or work near sparks or other so...

Page 16: ...result in a safety hazard or poor operation of the trailer Move pressure washer to vehicle When moving the pressure washer by hand always keep the jack cranked down to provide support if needed Attach...

Page 17: ...vers starts or stops that could create sway Rough or sloped terrain Slow down and exercise extra caution on rough or sloped terrain in order to reduce risk of rollover Pick the most level route possib...

Page 18: ...mended oil type for your engine and expected ambient conditions See engine Owner s Manual for oil type and capacity and more detailed oil check fill instructions WARNING Burn hazard Never open oil por...

Page 19: ...amps or damaged fuel tank Perform other scheduled maintenance as needed Make sure that any other regular maintenance has been performed as prescribed in this manual in the Maintenance Repair section 1...

Page 20: ...rge from your body before beginning the fueling process by touching a grounded metal object at a safe distance from fuel sources Keep nozzle in contact with container while filling Do not use a nozzle...

Page 21: ...trations within minutes Follow the directions below for choosing a location to operate your pressure washer in order to avoid carbon monoxide poisoning The location you choose to operate the pressure...

Page 22: ...clearance The exhaust gas from your pressure washer is extremely hot and can cause combustible materials to catch on fire Make sure both the engine exhaust and burner exhaust are at least 7 feet from...

Page 23: ...r use Place pressure washer in a suitable location for use as directed in the Before Each Use Step 3 Select Suitable Worksite section of this manual A suitable location is OUTDOORS only away from all...

Page 24: ...ply 1 Water supply should be standard tap water 2 Make sure the water is clean Debris can cause excess pump wear and reduce performance 3 Make sure the water supply is steady and capable of flowing at...

Page 25: ...ith components such as hose connections and spray gun rated for lower pressure and or temperature limits than the machine s maximum rated pressure and temperature or component could rupture and cause...

Page 26: ...sed on the following table Color of Nozzle Spray Angle Used For Red 0 Highest Impact Yellow 15 Tough Stains Stripping Green 25 General White 40 Light Cleaning Black Low pressure 65 Chemicals NOTE You...

Page 27: ...Figure 9b Step 2 Set Up for Chemical Spray if desired Using the proper cleaning chemical for the application can speed up cleaning jobs tremendously Your pressure washer is equipped with a quick conn...

Page 28: ...e and national guidelines Acquire cleaning chemical Use only NorthStar pressure washer chemicals or chemicals specifically formulated for use with pressure washers CAUTION Non approved chemicals can d...

Page 29: ...ll controls are properly adjusted for safe operation Damaged Do not operate the pressure washer with damaged missing or broken parts Never attempt to repair a high pressure hose or component Always re...

Page 30: ...poisonous gas that can kill you If you start to feel sick dizzy or weak while using the pressure washer shut off the engine and get to fresh air RIGHT AWAY See a doctor You may have carbon monoxide po...

Page 31: ...the nozzle at low pressure Air in the hoses can cause damage to the pump so always make sure all the air is out of the hoses before starting the pressure washer engine Start engine Start the engine t...

Page 32: ...red If HOT spray or steam is desired turn on the burner 1 First make sure vicinity is free of flammable vapors dust gases or other potentially combustible materials Operate only where open flame or to...

Page 33: ...e risk of injury do not attempt to secure the spray gun open by blocking or tying the spray gun in the open position Prevent slips loss of balance High pressure spray could cause you to lose balance f...

Page 34: ...ows the detergent to soak as you work toward the top 5 Use the width of the spray pattern to wash a wide path Overlap spray paths for complete coverage 6 The nozzle should be 12 to 24 from the work cl...

Page 35: ...ssure spray Step 4 Stopping Stop the engine using the following steps WARNING Never disconnect the high pressure hose from the pump or spray gun while the system is pressurized Relieve pressure by squ...

Page 36: ...re empty Residual fuel fumes from tank can ignite o Away from extreme high or low temperatures Do not store the pressure washer in freezing conditions unless it is prepared as directed below for those...

Page 37: ...rner off until RV antifreeze comes out of the high pressure water outlet 4 Make sure excess antifreeze is disposed of safely Prepare engine for long term storage if storing more than 30 days First pre...

Page 38: ...battery remove it from the battery compartment and store it indoors 2 Make sure the engine start switch is OFF 3 Disconnect the high pressure hose garden hose and spray gun Move pressure washer to st...

Page 39: ...t WARNING The burner adjustment procedure requires part of an individual s body to be underneath the pressure washer while it is elevated Always ensure the pressure washer is securely elevated before...

Page 40: ...tal plate located on the outside of the air band The shutter adjusts independently from the air band and is used to fine tune the amount of intake air b Observe that the aluminum pointer attached to t...

Page 41: ...filter water separator Drain water as needed Change filter after every 500 hours of use Descale coil Annually or more frequently as use and performance require see instructions Inspect clean adjust e...

Page 42: ...ystem is not properly hooked up or there is a fuel leak when you start the engine Inspect the entire fuel system for both engine and burner Look for signs of leaks or deterioration chafed or spongy fu...

Page 43: ...ssemble Check tires trailer Check tires and trailer before each use 1 Make sure tires are fully inflated and in good repair See tire sidewall for recommended pressure and fill as needed 2 Check to mak...

Page 44: ...lter 2 Air filter check replacement 3 Fuel filter check replacement 4 Inspecting and cleaning muffler and spark arrestor if equipped Change pump oil Change the pump oil after the first 40 hours of use...

Page 45: ...nside the heating coil tubing Scale deposits will decrease the output pressure and temperature of heated spray and may eventually clog water flow through the heating coil Descale the coil tubing at le...

Page 46: ...surface of the heating coil tubing These deposits will insulate the coil which then restricts air flow through the heat exchanger and further aggravates the soot build up If soot has built up on the e...

Page 47: ...at attach the burner to the heating chamber You do not have to disconnect the fuel lines or the electric cords Figure 20 2 Pull the burner out from underneath the heat exchanger 3 Clean off carbon dep...

Page 48: ...ulls the pump away from the engine tightening all three belts simultaneously Tension Specifications New belt Used Belt Static tension per rib strand 87 0 93 2 lb 74 5 80 8 lb Rib strand Deflections Di...

Page 49: ...e strongly recommend the following Have a staff person become familiar with the mechanical operation of the pressure washer and capable of making minor repairs and performing all preventative maintena...

Page 50: ...Surges Or Cycles While In Bypass Causes Solutions Leak between unloader and gun Check all connections between unloader and gun for leaks Tighten loose components and replace damaged components Gun le...

Page 51: ...Parts Explosion M157593 Rev E 51...

Page 52: ...4 106 777345 1 4 Fuel Line Burner Supply 13 35 786451 Snubbing Washer 4 107 777345 1 4 Fuel Line Burner Return 10 5 36 777656 Pressure switch 1 108 786458 Control Box Wire Tube 1 37 777378 Hose 18 540...

Page 53: ...Coupling 1 139 783098 Wheel for Jack 1 41 777410 3 8 Street Elbow 1 140 777775 Coupler 1 37 777378 18 3 8 5400 PSI Gray Hose 1 141 786521 A frame Tow bar 1 155 779816 3 8 MPT x FPT Adapter 1 142 7795...

Page 54: ...uction Delivery Valve 6 49 CO3201002700 Oil Level Plug 1 14 N A Suction Delivery Valve Seat 6 50 N A O Ring 1 15 N A O Ring 6 51 N A Plug 1 20 N A Packing 3 52 N A Solid Crankshaft 1 21 N A Packing Re...

Page 55: ...Wiring Diagram Rev E 55...

Page 56: ...le fatigued or under the influence of alcohol drugs or medication Understand intended use Carefully read about and understand the intended use of this pressure washer Do not use for other purposes as...

Page 57: ...usage Equip engine with a spark arrestor if pressure washer will be used near any ignitable forest brush or grassy land See the Specifications section of this manual to determine if your pressure was...

Page 58: ...h Know how to stop Be thoroughly familiar with proper use of the equipment and all controls and connections Know how to stop the pressure washer and relieve system pressure quickly if needed Danger Hi...

Page 59: ...g sprayed must be strong enough to withstand high pressure spray or damage may result In addition high pressure spray will dislodge unsecured objects as well as surface chips and debris resulting in h...

Page 60: ...oning Seek medical aid for suspected injection injury If injured by high pressure fluid no matter how small the wound is see a doctor at once A typical injection injury may be a small puncture wound t...

Page 61: ...eed 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 responsi...

Page 62: ...62 Manufactured by Northern Tool Equipment Co Inc Burnsville MN 55306 NorthernTool com...

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