I.C.T.C. Holdings Corporation 300S Legend User's Manual
Contents
1. AIRLESS mend pcr QOS 300S 3 Lesenq SAFETY OPERATING AND MAINTENANCE INSTRUCTIONS AND PARTS LIST H E R O Industries a division of Middlefield Bancorp Limited 2719 Lake City Way Burnaby B C V5A 2Z6 Phone 604 420 6543 Toll Free800 494 4376 Fax 604 420 8725C E Mail salesGhero ca Website www hero ca H E R O WARRANTY H E R O INDUSTRIES guarantees this airless pump to be free of defects in materials and workmanship to the original owner for a period of one full year from the date of purchase The warranty entitles the owner to parts replacement a no charge The parts replacement warranty is valid for any necessary replacement whither caused by material or workmanship defect or simple wear H E R O Industries offers no warranty on the intake ball outgo ball drive belt hoses gun or accessories plastic rubber other soft goods or motor used in or supplied with the H E R O sprayer Motor accessories etc which are supplied by other manufacturers and are attached to or supplied with the H E R O airless pump are warranted only tb the extent that these parts are warranted by their respective manufacturers Warranty claims must be made directly to such manufacturers or their local authorized service depots The warranty is only applicable to the original purchaser and the equipment has been properly used operated and maintained in accordance with all instructions precautions and warnings containe2. full sweep Sota H E R O INDUSTRIES 11 3008 300SL LEGEND Owner s Manual AIRLESS SPRAY PAINTING SUGGESTIONS AND TECHNIQUE SPRAY TIP SELECTION TIP SIZE FOR APPLICATION OF 021 Exterior Latex on large unobstructed areas max size allowed 60 OZ 018 Interior Latex Exterior Latex Shake Paint Exterior Flat Paints 46 OZ 015 Alkyd Flat Enamel Interior Latex Semi Gloss Enamel Stains 30 OZ 013 Fine ground Gloss Enamels and good quality Stains 23 OZ O11 Clear Varnishes and Lacquers 15 OZ 009 Clear Varnishes and Lacquers 10 OZ NOTE The above volumes achieved with gun wide open for 1 minute and pump spraying at 2000 psi All volumes are approximate To test worn tips spray water through the tip at 2000 psi for 1 minute Spray into bucket and weigh amount less weight of bucket If it is substantially greater than what is listed above then the tip should be discarded or reclassified As a tip wears the hole gets larger and the fan pattern becomes narrower ORIFICE SIZE All tips are rated by the size of the orifice or bore size The bore size is measured in thousandths of an inch 018 18 thousandths of an inch The size of tip required is based on the consistency of the material to be sprayed The thicker the paint the larger the tip size required Always consult the product label or ask the paint retailer for the manufacturer s recommendations with regard to proper
3. Manual SPECIAL NOTES AND INSTRUCTIONS NEVER LEAVE THE UNIT UNDER PRESSURE WHEN NOT SPRAYING MOTOR TURNED OFF RELIEVE PRESSURE BY TRIGGERING GUN NEVER STORE THE UNIT WITH PAINT OR WATER IN THE PUMP SYSTEM EVEN OVERNIGHT El RN RA RKEKRKERE E KK NEVER attempt to start the motor when the unit is under pressure Relieve pressure and follow instructions in Setting up to spray NEVER attempt to run the motor on longer or lighter extension cord than specified Avoid operating the unit while tilted Keeping it level assures greater operating efficiency If motor s thermal overload switch has opened unplug unit and allow it to cool DO NOT attempt to resume spraying before determining and correcting the cause of overheating Always follow flushing and cleaning instructions exactly In hot weather locate unit in shade Regularly check the level of H E R O LVO hydraulic fluid in the hydraulic tank It should be kept near full top up as needed with only genuine H E R O LVO hydraulic fluid Crankshaft eccentric bearing should be greased at regular intervals consistent with hours of use Use MO 2 grease i e common auto grease approximately every 10 hours of operation If you wish to power your H E R O airless sprayer with a generator it must be a minimum of a 4500 watt generator in good operating condition NOTE An electric tool must be powered by a generator which has an output wattage of at least three times the maximu
4. Owner s Manual ASUS 0 rad REPAIR OF BLEED VALVE Tools or Supplies Required 5 8 Open end wrench e 3 4 Open end wrench 9 16 Open end wrench e Teflon Tape optional e Loc Tite optional Bleed Valve Repair Kit Installation Open bleed valve ref 34 turning handle counter clockwise to release pressure from material side of pump Remove bleed valve return hose ref 48 from bleed valve return fitting ref 44 Place wrench on bleed valve connector ref 35 Turn counter clockwise to remove valve from outgo tee ref 33 Secure valve vertically in vise clamping vise jaws on the flats of valve nut ref 36 See picture above Use wrench to remove valve housing ref 41 from nut ref 36 Remove ball ref 37 seat ref 26 and crush washer ref 24 Install new crush washer and seat ensuring the beveled surface of seat is facing out into the bleed valve nut ref 36 Place new ball into bevel of seat Re install valve housing Use of Teflon Tape or pipe sealant is optional Tighten 1 4 turn past finger tight If leakage occurs at this junction point during operation tighten 1 4 turn more or until leakage stops To install new valve stem or valve stem seals ref 38 or 39 continue at step 9 Complete steps 1 to 5 from above Place valve housing in vise Use 1 2 wrench to loosen jam nut ref 42 and remove handle Remove jam nut from valve s
5. Remove the four bolts ref 9 securing the intake endcap ref 11 to the pump 2 Remove the ball cage ref 14 ball ref 13 and elbow ref 8 from the endcap Place endcap on work bench with external side facing up Use socket or screw driver and hammer to gently tap out seat Remove any Loc Tite residue from the area from which the seat was removed Inspect for any signs of wear or erosion in this area If wear or erosion is found discard the entire endcap and replace with 4 4B 6 Use lacquer thinner to clean both the seat and endcap in the area where the seat will be positioned 7 The fit of the seat to endcap is very tight To aid in the installation place the endcap in very hot water and the seat in very cold water The heat causes the endcap to expand and the cold causes the seat to contract making installation easier 8 Dry off seat and endcap 9 Apply Loc Tite 609 around the outside of seat and in the machined area where the seat will rest 10 Slip seat into the endcap The seat should rest flush with or slightly below the surrounding area when correctly installed Use a wooden or nylon dowel to gently tap into place if the seat did not fall into place fully Use caution as the tungsten carbide seat is very brittle yet strong and may chip or break NOTE If the seat will not fit into the endcap using the heating cooling method A Follow steps 6 amp 8 B Place seat into endcap and put 5 8 socket
6. Slide large steel hub A onto new screw B provide in kit The screw should fit in counter sunk hole leaving the flat side of hub facing away from screw head Thread the small nylon disc C diaphragm pad D and second small disc C onto the screw There is no correct side to the pads They MUST be threaded on to avoid leakage due to the hole being enlarged Slide the smaller hub E onto the screw being certain the beveled edge of the plate is next to the nylon pads During operation the diaphragm flexes over the beveled edge If reversed flat edge against diaphragm the diaphragm will be cut on the sharp edge while in operation Thread on and tighten nut F supplied in kit DO NOT re use old nut Fill the hydraulic head cavity with genuine H E R O hydraulic oil before placing diaphragm onto hydraulic head Place new or repair diaphragm onto hydraulic head with the large hub facing up Screw head visible Ensure diaphragm is centered and within the hydraulic head s recessed area Place paint head endcap assembly onto the hydraulic head Ensure correct orientation Install mounting bolts and using a criss cross pattern tighten bolts to 30 foot pounds Purge hydraulic oil system per instructions on page 19 The diaphragm will take on a wrinkled or puckered appearance almost immediately after operation begins Do Not be concerned by this A diaphragm requires replacement when hydraulic oil appears in the
7. Turn counter clockwise to remove complete valve Place complete valve in vise and remove seat from body ref 81 Remove ball ref 86 retainer ref 85 and spring ref 84 from body Inspect ball for nicks or cuts and replace if damaged Inspect seat at sealing edge for signs of wear A good condition seat will have a very small beveled at the sealing edge The larger the bevel the more wear has taken place Inspect retainer for wear The retainer has a small locating hole in it The hole should be flush or slightly beveled The greater the wear on the ball seat and retainer the poorer the static pressure will be Replace parts individually or use repair kit ref 88 6 Hold P C body vertical Place spring into body place retainer onto spring Ensure retainer fits completely over spring Retainer should rest below end of body by approximately 1 4 to 3 8 Place ball onto retainer ensuring ball is located on center hole 7 Thread on seat using care not to dislodge the ball from its position on the retainer Tighten firmly 8 Apply pipe dope or Teflon tape to exterior threads of seat Install into elbow Tighten to prevent leaks and return to original position 9 Reattach hydraulic line See PURGING instructions on page 19 AUN H E R O INDUSTRIES 30 300S 300SL LEGEND Owner s Manual 1 4x1 4 114 3 Whipend 10 55 011 2 10 55 011 4 10 55 300 2 10 55 300 4 SGAL SB 25 4 649 4 655 4 660 4 662 4 664 661 4
8. easier to obtain This test is commonly referred to as the Diaphragm Test The solution to almost all problems can be found in the paint side valves due to the increased wear from contact with the abrasive paint spray materials Intake valve assembly ref 11 15 Outgo valve ref 22 and Prime valve ref 34 make up the three paint valves Refer to pages where exploded views of these valves are shown To eliminate the hydraulic side of the pump piston side of diaphragm as a source of problems 1 Remove the intake valve end cap ref 11 by removing the four cap screws ref 9 2 Remove large spring ref 15 3 Start unit 4 Increase the pressure by turning the pressure control knob ref 74 clockwise to full pressure 5 Put pressure on the center of the exposed diaphragm with the handle of a screwdriver or other blunt object NOTE The diaphragm is located between the paint head ref 18 and the hydraulic head ref 53 6 If you are UNABLE to stop or alter the hydrapulse membrane s movement then the hydraulic side is operating properly The problem is located in the Paint pump See troubleshooting guide for additional information H E R O INDUSTRIES 17 300S 300SL LEGEND Owner s Manual TROUBLESHOOTING SITUATION POSSIBLE CAUSE REMEDY ELECTRIC MOTOR WON T START RUN 1 Unit unplugged or building circuit fuse is blown check replace or reset fuse 2 Pump under pressure reduce pressure setting by turning
9. pressure control knob counter clockwise trigger gun to relieve pressure 3 Too light or too long of extension cord replace with correct cord If distance greater than 100 feet obtain and install extra length of H E R O airless spray hose 4 Unit s thermal overload switch has opened determine and correct cause of overheating ELECTRIC MOTOR STALLS QUITS l See Electric Motor Won t Start Run 2 Drive belt is loose tighten drive belts by evenly turning belt tension bolts on either side of motor clockwise Loose belts generally emit loud squealing noises 3 Unit primes builds pressure but pump seizes or stops when gun is triggered loose belts tighten TOTAL LOSS OF PRESSURE DIAPHRAGM MOVEMENT CANNOT BE STOPPED OR ALTERED SEE DIAPHRAGM TEST 1 2 Paint too thick thin paint according to manufacturer s recommendations Intake ball ref 13 worn or jammed opened closed remove intake endcap ref 11 and cage ref 14 Inspect intake ball ref 13 to ensure it is free round and has no nicks or cuts Inspect ball cage and cage spring for damage or wear Inspect for foreign material jamming ball Replace parts as needed Intake seat loose bypassing remove intake endcap ref 11 and ball cage refit 14 Check seat to ensure it is tightly secured in endcap block Remove intake elbow ref 8 and inspect block from the inbound direction Look for any washout or erosion Removal of seat may be req
10. secured to stem ref 78 with Loc Tite If the screw turns independent of the stem than it must be re secured Secure unit so it will not move Install pressure gauge and 021 spray tip Obtain a piece of wood to use as a pusher or purchase a pressure control adjustment tool 27C 15 Remove pressure control screw and put some Loc Tite 609 on threads Turn the screw into the stem a few turns and push it in to its maximum and read pressure Turn the screw in or out until 3000 psi static pressure is obtained If you obtain a pressure which higher than 3000 psi trigger gun to release some pressure and continue adjusting screw until correct pressure is obtained Let Loc Tite set up 2 Pressure control ball refit 87 and or seat ref 86 worn remove entire pressure control valve refi 73 from sprayer Remove valve seat ball retainer ref 85 and spring ref 84 from valve Replace with pressure control repair kit ref 88 Hold valve body vertical while placing in spring followed by retainer Retainer should be below the valve body approx 3 8 when positioned correctly Center ball on retainer turn valve seat into body until finger tight using pipe dope or Teflon tape to seal Fully tighten using wrench See page 30 H E R O INDUSTRIES 20 300S 300SL LEGEND Owner s Manual TROUBLESHOOTING SITUATION POSSIBLE CAUSE REMEDY FLUID BEING SPRAYED OUT OF TIP PULSATES SPRAY HOSE LIES QUIET WHEN GUN TRIGGER CLOSED 1 Spray tip
11. tip sizes FAN WIDTH Fan width or pattern width is determined by the spray tip s fan width classification This size is measured in inches and is determined when spraying 12 inches from the spray surface Various methods of noting the fan widths are used by tip manufacturers Ask your distributor for assistance NOTE Two tips having the same tip size but different fan widths will deliver the same amount of paint over a different area wider or narrower strip A spray tip with a narrow pattern width makes it easy to spray in tight places Use only good quality high pressure tungsten carbide spray tips SPRAY TIP REPLACEMENT During use especially with Latex paint high pressure and material abrasion will cause the orifice to grow larger As the orifice grows larger the fan width grows smaller Replace tips before they become excessively worn Worn tips waste paint cause over spray make cutting in difficult and decrease sprayer performance NOTE When using Latex paint a spray tip will wear at the rate of one size for approximately every 100 gallons of material sprayed An excessively worn tip can be the cause of apparent operating problems with the unit If a tip is worn past the aperture size which the unit can support pulsation will become evident in the spray fan pattern Added strain is placed on the Hydrapulse membrane as it attempts to keep the spray pressure consistent When the tip wears beyond 021 its is releasing more materia
12. valve refit 62 there is an opposite re action of the hydraulic outgo valve ref 73 At the same time there are corresponding re actions taking place within the paint pump This means that as the hydraulic intake valve is opening so is the corresponding paint intake valve and while the hydraulic outgo valve is closing so is the corresponding paint outgo valve The operation and function of each valve discussed at the end of this section For correct operation to begin the hydraulic system must be fully primed and all air must be removed see purging page 19 Operation begins with piston in the backward position fig 2 At this point the hydraulic intake is open while the hydraulic outgo valve is closed The corresponding paint valves are in similar positions As the piston moves forward it pushes hydraulic oil forward This movement of oil causes the hydraulic intake valve to close and the diaphragm to move forward fig 1 The hydraulic outgo valve will remain closed until sufficient pressure is created to cause it to open While the hydraulic valves are operating a corresponding re action is taking place in the paint valves The forward movement of the diaphragm pushes the paint causing the paint intake valve ref 11 15 to close The trapped paint requires a means of release so it forces the outgo valve ref 22 to open and paint flows to the gun Ce H E R O INDUSTRIES 14 3008 300SL LEGEND Owner s Manu
13. vise 6 Remove lower half of valve ref 23 7 Remove crush washer ref 24 seat ref 26 ball ref 26 cage reft 27 and spring refit 28 Clean and inspect all parts for wear Replace any worn parts 8 Apply Teflon tape to threads of outgo upper body 9 Place spring large end first into outgo body Spring should fit into slot machined El into tunnel 10 Place cage onto spring with open end up NOTE Cage should be open so that it drags down the sides of the tunnel during installation If closed too much it will trap the ball and cause pulsation in spray Ey A pattern 11 Place ball into cage 12 Install seat beveled side down to ball Seat should fit snugly into outgo body Press O on seat to ensure it will compress until it is flush with outgo body Release slowly to ensure the parts do not dislodge themselves 25 13 Place crush washer on seat Replace crush washer if badly crushed 14 Thread outgo lower onto outgo upper until finger tight Tighten 1 2 turn with wrench NOTE Teflon tape or pipe sealant should be used 15 Attach repaired valve to machine installing a new crush washer refit 21 following steps 3 4 in reverse order SPECIAL NOTES To check the ball for wear place against a new seat and check sealing edge against a bright light A used seat may be checked in a similar manner using a new ball Replace used part if light pass at sealing edge Qi O H E R O INDUSTRIES 24 300S 300SL LEGEND
14. with flash points lower than 140 F 60 C E NEVER attempt to stop any leakage in the paint line or at any fitting with your hand or any part of your body Immediately shut off the unit should leakage occur k NEVER wash an electric motor nor operate it in the rain or in wet or damp areas to protect yourself from electric shock k NEVER allow paint hose to become kinked or to vibrate against rough or sharp surfaces NEVER operate the unit at pressures higher than the pressure rating of the lowest rated component in the system or at pressure higher than factory preset NEVER spray in an enclosed area The spraying area must be well ventilated to safely remove chemical vapors Ei NEVER operate the unit with worn or damaged accessories or with accessories other than those supplied by H E R O Industries unless the accessories have been first specifically approved in writing by H E R O Industries Ed NEVER allow the unit to be serviced or repaired anywhere other than an authorized H E R O Service Center or with other than genuine H E R O parts or components Ei NEVER leave unit unattended without first shutting off triggering the gun to relieve all pump pressure and setting the trigger lock on gun in LOCKED position with gun locked closed H E R O INDUSTRIES 4 300S 300SL LEGEND Owner s Manual ALWAYS M ALWAYS follow H E R O recommendations for operation and safety completely M ALWAYS ensure that switch is in o
15. 00SL LEGEND Owner s Manual PARTS LIST Please order parts by the appropriate part number and not by reference number The quantity required per unit is shown for each part number Part numbers in bold text indicate whole assemblies or kits These parts may also be purchased individually CHASSIS PARTS PART QTY 4 50 TT EAE Kof feel EAE EN NUT Hex Jam 5 16 N Ne FOOT PAD c w ref 124 125 CAPSCREW HX HD 1 4NC x 3 4 PLATED zlela z z z z s u z u z i i as e ze xz x as a x e e lolole f aufa ola os S olo lS o 12 8 5 2 8 2 5 3 elalsle gt sz es WASHER 1 4 SAE PLATED WASHER 1 4 Regular Lock PLATED N NUT 1 4NC HX PLATED BELTGUARD ASSEMBLY c w ref 127 amp 128 BLACK N gt FE Elbe H E 01098 lt BELTGUARD BLACK 3008 ONLY CHASSIS PARTS 300SL ONLY CHASSIS PARTS i H E R O INDUSTRIES 36 300S 300SL LEGEND Owner s Manual 1 mle N No poo m e a n w o i CiI i l l wlewa iaa NARI w N Nel t2 olrlrlrilrfiofo EN Ss ele LJ 2 Me e 8 Eg zg ua 2 a elsls o gt ALAA S SINININ ool Back Baci Bae R Oo e PARTS SCHEMATIC 3008 300SL LEGEND 300S 300SL LEGEND Owner s Manual 37 H E R O INDUSTRIES PARTS SCHEMATIC 3008 300SL LEGEND H E R O INDUSTRIES 38 300S 300SL LEGEND Owner s Manual Manufac
16. 666 4 LVO 1 4 LVO 4 4 67 19 4 45 3 ACCESSORIES H E R O INDUSTRIES 31 300S 300SL LEGEND Owner s Manual PARTS LIST Please order parts by the appropriate part number and not by reference number The quantity required per unit is shown for each part number Part numbers in bold text indicate whole assemblies or kits These parts may also be purchased individually INTAKE PARTS DESCRIPTION SIPHON ASSEMBLY COMPLETE Ref 2 7 48 50 A gt oo gt 1 89A 1 184A 1753 67 27 67 26 2 WASHER 3 8 Hi Collar Lock 4 SSY SEAT 3 4 Tungsten Carbide 17S BALL 3 4 Steel Corrosion Resistant Use with spring cage 4 183S 4 183S CAGE Spring Loaded Use with steel ball 17S wulalal w Uo gt li I Uv gt 2 rio Alal ele alul iuv Als on a SPRING O RING Viton 222 OUTGO PARTS C 1 N RI SI2l3 al lt 5 B TIA SSY 1A 1 1A 3CP 1A4 1A 5 1A 6 1A 7 1A2 ES 9 29 H E R O INDUSTRIES 32 3008 300SL LEGEND Owner s Manual PARTS LIST Please order parts by the appropriate part number and not by reference number The quantity required per unit is shown for each part number Part numbers in bold text indicate whole assemblies or kits These parts may also be purchased individually OUTGO PARTS alr Y e o D N NUT Bleed Valve 11A 5 Ball 3 8 Steel 606 8 O RING Bleed Valve Stem D e DD io 606 1 A N d k
17. AYS Turn off the motor Disconnect the power cord from the outlet Relieve all pressure in the pump by triggering the gun Lock gun trigger in LOCKED position with gun locked closed before attempting to perform any maintenance or service on any part of the unit spray system M ALWAYS wear safety glasses when operating the unit M ALWAYS ensure fire extinguishing equipment is readily available and properly maintained in the spray area M ALWAYS observe good housekeeping and keep the spray area free from obstructions M ALWAYS be aware that certain chemicals may react with aluminum carbide or other components in the pump system Read the manufacturer s label on all materials to be sprayed and follow the manufacturer s recommendations If in doubt consult your material supplier to be sure AU ME H E R O INDUSTRIES 5 300S 300SL LEGEND Owner s Manual H E R O AIRLESS SPRAY PAINTING Welcome to the world of H E R O airless paint spraying We are sure you will enjoy owning and operating your new H E R O model 300S or 300SL With H E R O airless spray equipment you will avoid the inconvenience and mess of over spray You are spraying paint not air and the paint is driven to the painting surface in a clean fan shaped spray which penetrates all cracks and corners To attain these results you must adjust the pressure as low as possible We recommend that you become familiar with your H E R O unit Discuss with your dealer the u
18. Check to insure strainer bag is not clogging intake siphon hose or screen SPRAYER DOES NOT PRIME WITH PAINT 1 Heavy bodied paint pump dry refer to Operating Instructions and follow priming instructions using the correct thinner for the paint you are to use SPRAYER DOES NOT PRIME WITH CORRECT THINNER 1 Pump completely dry pump may experience difficulty in priming when it is completely dry First invert siphon tube and pour thinner into siphon tube to help prime dry pump 2 Intake siphon assembly ref 1 has loose damaged fittings loose clamps or damaged hose check all fittings hose clamps for tightness siphon hose for damage or holes Replace or tighten as required 3 Intake valve ball refi 13 stuck remove intake endcap ref 11 and free ball and reassemble 4 Outgo valve ball refi 26 stuck remove outgo valve ref 22 Unthread outgo valve upper body ref 29 from outgo body lower ref 23 Remove outgo seat refi 25 from upper body Free ball and reassemble following detailed instructions on page 24 H E R O INDUSTRIES 21 300S 300SL LEGEND Owner s Manual TROUBLESHOOTING SITUATION POSSIBLE CAUSE REMEDY SPRAY MATERIAL LEAKS AT PRIME VALVE STEM 1 Prime valve stem packings ref 38 or 39 defective replace damaged packings following detailed instructions on page 25 SPRAY MATERIAL LEAKS OUT PRIME VALVE HOSE WITH VALVE CLOSED 1 Prime not closed tightly tighten valve handle
19. MP HAS BEEN REPAIRED AND REASSEMBLED DIAPHRAGM NOT MOVING PURGING 1 Air lock created on hydraulic side of pump when the hydraulic side of the pump is working there is no air in it During repairs t is possible that air has been trapped in the hydraulic system It must be removed or the pump will not work To purge the air from the hydraulic system remove the pressure control knob ref 74 from the valve Gently pull the P C stem ref 77 out It will pull out about 1 8 Remove the vented hydraulic cap ref 68 from the hydraulic tank ref 65 and install accessory pressure cap item 4 45 3 With a bicycle pump apply a few pounds of air pressure to the hydraulic tank This will force the oil through the hydraulic system and push out any of the trapped air Wait a few minutes Remove pressure cap and replace with vented cap Restart the unit and install pressure control knob NOTE Unit may be running during purging procedure to speed up the procedure If a pressure cap is unavailable simply running the equipment for approximately 5 10 minutes with the P C stem pulled out will purge the system Accessory Item 4 45 3 H E R O INDUSTRIES 19 300S 300SL LEGEND Owner s Manual TROUBLESHOOTING SITUATION POSSIBLE CAUSE REMEDY PUDDLE OF OIL APPEARING UNDER SPRAYER DURING OPERATION 1 Hydraulic fitting loose cracked or hydraulic lines are punctured examine all hydraulic lines and fittings for cracks breaks or loosene
20. against seat C Place entire assembly into vise with endcap against one vise jaw and the socket against the other D Tighten the vise and it will work as a press to force the seat into the endcap 11 Use a steel punch and punch four 4 new marks around the newly installed seat The punch marks help to expand the metal around the seat giving a firmer grip 12 Allow the endcap to sit for at least 12 hours while the Loc Tite cures 13 Always install a new intake ball ref 13 after replacing seat 14 Install intake cage ensuring a minimum 1 32 clearance between ball and cage sides 15 Install intake elbow ref 8 ensuring elbow is in line with cage 16 Install intake valve using the four bolts removed in step 1 17 Torque to 30 foot pounds using criss cross pattern Cross Section View H E R O INDUSTRIES 23 300S 300SL LEGEND Owner s Manual OUTGO VALVE Tools or Supplies Required 1 11 16 Open end wrench Open end wrench Teflon Tape or pipe sealant 1 Open prime valve ref 34 in order to release pressure from the material side of pump 2 Remove pressure control knob ref 74 and pull P C stem ref 77 out to internal b stop thereby releasing hydraulic pressure 29 3 Disconnect outgo tee ref 33 from outgo swivel refit 30 on the outgo valve 4 Remove outgo valve from machine by turning counter clockwise 5 Invert valve and secure upper part of valve ref 29 in
21. al TROUBLESHOOTING The backward movement of the piston creates a vacuum in the hydraulic system This causes the hydraulic outgo valve to close and the hydraulic intake valve to open fig 1 Opening of the hydraulic intake valve allows a new supply of hydraulic oil to enter the system replacing the oil which was used on the forward stroke Once again a corresponding re action is taking place in the paint pump The diaphragm is pushed backward by the paint intake spring ref 15 The backward diaphragm movement causes a vacuum in the paint pump This vacuum causes the intake valve to open allowing a new supply of paint to enter The corresponding paint outgo valve is drawn closed by the vacuum created by the diaphragm These operations are repeated at a rate of 750 times a minute These continuously repeated actions draw paint into the pump pressurize it and then deliver it to the gun The failure of any one valve to operate correctly will effect the overall equipment performance Each of the five valves mentioned earlier have an important function and will effect the overall performance of the unit if not performing correctly HYDRAULIC INTAKE VALVE REF 62 PART 4 30 The hydraulic intake valve is a small vacuum valve which controls the hydraulic oil entering the hydraulic pump cylinder area Once the oil has past through the valve it is prevented from returning The valve is commonly called a one way check valve Valve failur
22. as mo 3E ALS Cn dl Pr HYDRAULIC PARTS REPAIR KIT Diaphragm Diaphragm es sel plates REPAIR KIT Diaphragm Diaphragm less steel plates 4 23A 2 HEAD ASSEMBLY complete with insert ref 54 55 SSY D uy N WASHER Back Up NE la EN Ee Aj WIN A ele oo o o o Fa ei Le A N N a Un N i WASHER 5 16 SAE Plated CAPSCREW SKT HD 5 16NC x 2 3 4 H E R O INDUSTRIES 33 3008 300SL LEGEND Owner s Manual gt gt o aA 2 ele el eal oal a i _ Ali CAE BOLS E0 ETLE ETLE ELN ECL aflan jo z A4 N N aula Ww N S gt Q A zx e S PARTS LIST Please order parts by the appropriate part number and not by reference number The quantity required per unit is shown for each part number Part numbers in bold text indicate whole assemblies or kits These parts may also be purchased individually HYDRAULIC PARTS F A W A SN Fond IQ ne lt a 1 1 E 1 ASSY SSY Niunf _ B 1 1 SSY 1 oo i H E R O INDUSTRIES 34 3008 300SL LEGEND Owner s Manual 4 27C 11 FITTING Oil Return P C Fs Los ss EN Por gt 28 l w No n PARTS LIST Please order parts by the appropriate part number and not by reference number The quantity required per unit is shown for each part number Part numbers in bold text indicate whole assemblies or kits These parts may also b
23. d in this manual For the purpose of this warranty damage resulting from accident abuse improper cleaning or operation fire flood or Act of God is not covered H E R O s liability is limited to replacing parts found to be defective or worn and does not include transportation costs damage or other expenses of any kind incurred in connection with the purchase and use of this sprayer Repairs claimed under warranty must be performed at an authorized H E R O Service Center using only genuine H E R O parts Parts necessary under warranty claim will be supplied by your local H E R O Service Center DO NOT return worn parts to factory without authorization To qualify for the warranty the warranty card attached to this page supplied with this H E R O airless pump must be completed with equipment serial number and signed by the purchaser and postmarked within ten 10 days of purchase 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Q loda n mali ia a ma a ai m ai m a a ai aii m ai m al a a a aii m ali m al H E R O INDUSTRIES 2 300S 300SL LEGEND Owner s Manual Table of Contents Important Safety Precautions Introduction Operating Instructions Setting up to Spray Flushing The Unit Special Notes Airless Spray Painting Suggestions Trouble Shooting Intake Seat Replacement Outgo Valve Bleed Valve Repairs Diaphragm Replacement Hydraulic Head Insert Replacement Piston Repairs Pressure Contro
24. e purchased individually HYDRAULIC PARTS PART DESCRIPTION 8A 3 SEAT Piston Bronze 38A 2 ROD Piston C W Nut Washer O Ring Circlip DRIVE PARTS 25 80 5000 BEARING Crankshaft Side S LT CARRIAGE S I6NCx5 8 __ oo WASHER Lock 5 16 NANA T Kel o 5 Oe e Ne Z e o t wN el 4 4 39 ECCENTRIC BEARING amp HOLDER C W Zerk Ref 99 100 ASSY e alal o 3 lt 9 2 BEARING Eccentric Outer 00 4 39 3 Holder Eccentric C W Zerk 101 4 41 CRANKSHAFT Includes Ref 102 un un lt 1 1 1 slo Suo o E 05 6 107 08 09 e BE BELT JARAK ss Xlo X e es otol o o NTO ce oO ta o ojlo o oju MOTOR 1 0 H P Doerr Motor Includes Switch Cord SWITCH On Off Doerr Motors Push on Connectors po US E Re eii nilo 39 1 RACE Eccentric Inner S KEEPER PLATES with hardware KEYSTOCK Yl6SQx 15 SHEAVE Pump C W Set Screws 2 ref 105 FAN Doerr Motors CLIP Fan Doerr Motors COVER Fan Doerr Motors CHASSIS PARTS 53 FRAME Left Side FRAME Right Side BRACKET Motor Cord Wrap SET SCREW SKT HD 5 16 NC x 7 16 SHEAVE Motor C W Set Screws See Ref 105 WASHER 5 16 SAE CAPSCREW HX HD 5 16NC x 1 2 ROD C W Clips Includes Ref 116 g njee Dala a ale Vaya E x g g2 as zziz PIE s 3 818 5 E 313 EE o wm w A ne H E R O INDUSTRIES 35 300S 3
25. e will result in the hydraulic pump being unable to build pressure and the diaphragm will stop moving Spray pressure will cease HYDRAULIC OUTGO VALVE REF 73 PART 4 27C The hydraulic outgo valve better known as the pressure control valve is used to control the units operating pressure The valve is fully adjustable from 0 psi to 3000 psi By turning the pressure control valve knob ref 74 clockwise the pressure is increased The hydraulic pump continues to build at all times and must have a means of releasing this pressure Pressure applied to the P C ball ref 87 will keep it lodged in the P C seat ref 86 until the internal hydraulic oil pressure is sufficient to cause it to open The point at which the oil is released is equal to the level set by the control knob As components within the pressure control valve wear the valve looses its ability to maintain or reach the required pressures see low static pressure PAINT INTAKE VALVE ASSEMBLY REF 11 15 The paint intake valve is made up of five items endcap ref 11 complete with seat ref 12 intake ball ref 13 cage complete with spring ref 14 and large spring ref 15 The intake valve controls the incoming flow of spray materials and is responsible for keeping them from returning to the source The ball must be able to create a complete seal on the seat otherwise pressure will be lost A worn intake valve will permit correct static pressure but supply low
26. e you have a basic understanding of the operation of the equipment and the effect created in one area and how it will effect operation in another area you will be better able to diagnose and make repairs All H E R O diaphragm pumps are made up of two 2 distinct pumps The first and most important pump is the hydraulic pump The hydraulic system is made up of two valves the hydraulic intake valve ref 62 and the hydraulic outgo valve known as the hydraulic pressure control valve ref 73 The second pump is known as the paint or material pump The paint system is made up of two basic valves the paint intake valve assembly ref 11 15 paint outgo valve ref 22 A third valve known as a prime valve ref 34 is used during the priming procedure see setting up to spray For correct operation all five valves must be in good working condition For this manual we will refer to the two systems as hydraulic and paint At the center of these two pumps is the diaphragm The diaphragm is a flexible nylon disc which transfers the energy pressure created by the hydraulic pump to create energy pressure in the paint pump The function of the diaphragm is to create a barrier between the hydraulic oil and the spray material and transfer the energy created To fully understand and trouble shoot a H E R O pump always keep in mind that for every action there is an opposite or corresponding re action For every action of the hydraulic intake
27. ely 1 8 To affix the insert the extra material of the insert must be flared to secure to the hydraulic head Position a steel ball on the front and back of the insert See figure 3 Position this assembly in the jaws of a vise Slowly close the vise jaws The vise acts as a press and the ball will cause the extra insert material to flair around the head Continue closing vise until the insert is tight and can no longer be rotated or spin in the hydraulic head Over tightening can create cracks or splits in the flange flare leading to repeat failures Do Not over tighten Re assemble pump in the reverse order of removal Torque all bolts to 30 foot pounds Once the repairs are completed return unit to horizontal position replenish lost oil and purge per instructions on page 19 H E R O INDUSTRIES 27 300S 300SL LEGEND Owner s Manual PISTON REPAIRS Tools or Supplies Required omepma TA Three 3 per side Ref 114 1 Remove hydraulic feed line ref 63 from hydraulic intake valve ref 62 and also remove hydraulic return line refi 72 from the pressure control valve refit 73 Plug lines to minimize oil loss Hint golf tees work well for this 2 Remove the bolts ref 114 passing through the side frames ref 110 111 into the crossblock refit 60 3 Place a drain tray under cylinder area 4 Grasp the pump assembly and pull away from the piston Stop when piston pulls free to allow the hydraulic o
28. er spray pressure A worn intake ball will become smaller in diameter and loose its ability to seal at the seat A worn seat will develop a large step in the area where contact with the ball is made This can cause the intake ball to distort in shape making the ball egg shaped If the valve assembly becomes warm to the touch this may be a sign of a loose or worn seat or erosion wash out of the endcap block The seat is Loc Titeed into the endcap and must remain tightly sealed at all times H E R O INDUSTRIES 15 300S 300SL LEGEND Owner s Manual TROUBLESHOOTING PAINT OUTGO VALVE REF 22 PART 4 11A The paint outgo valve monitors and controls the flow of spray materials as it leaves the sprayer It also works together with the paint intake valve to build paint pressure as specified by the setting made by the hydraulic outgo valve pressure control valve A worn outgo valve will result in pulsation in the spray material and cause the paint hose to jump and vibrate vigorously PRIME VALVE REF 34 PART 4 606 NEW The prime valve is used at the beginning and end of the spray operation see setting up to spray The function of the prime valve is to assist in removing air from the paint pump when beginning to spray It is necessary to remove all air from the paint pump so that the spray material can replace it The pump will function without the prime valve however the initial priming procedure would require considerably longer to c
29. ff position before plugging in the electric motor M ALWAYS set trigger lock on gun in LOCKED position when not in use with gun locked close M ALWAYS check connections and fittings for tightness before operating the unit M ALWAYS locate the unit in a well ventilated area a minimum of 25 feet from the spray area M ALWAYS ground the unit the paint containers and the object being sprayed to eliminate static discharge Ensure that all these objects remain grounded throughout the entire spraying operation M ALWAYS use approved 3 prong grounded extension cord and approved grounded outlets of the voltage and frequency specified on the motor The outlet must be at least 25 feet from the spraying area M ALWAYS use approved 3 prong grounded extension cord not less than 12 3 gauge up to 50 feet and not less than 10 3 gauge up to 100 feet DO NOT exceed 100 feet of extension cord M ALWAYS use accessories and components approved for at least 3000 psi working pressure in the spraying system M ALWAYS use accessories and components supplied by H E R O Industries or specifically approved in writing by H E R O Industries on with the unit M ALWAYS examine accessories for wear or damage before operating the unit M ALWAYS use lowest possible pressure when flushing and cleaning the unit and hold the gun firmly against a metal container to reduce static discharge possibility M ALWAYS wear a face filter mask when operating the unit M ALW
30. il to drain into pan Completely remove pump assembly from between side frames If only replacing piston seals ref 90 continue at step 15 6 Remove the piston ref 89 from eccentric bearing ref 98 Move to clean work bench for repairs em H E R O INDUSTRIES 28 300S 300SL LEGEND Owner s Manual so 00 11 13 14 15 16 20 21 22 23 24 25 PISTON REPAIRS Remove piston circlip using circlip pliers Remove piston from rod NOTE Use extreme caution not to damage circlip or the internal circlip groove of piston Piston rod circlip washer o ring and nut are not available individually Parts are available with the purchase of piston rod ref 93 only The circlip will have one sharp edge and one smooth edge The smooth edge should be towards the washer If reversed the rod will continually pull out of the piston Remove bronze piston rod seat ref 92 from piston refit 91 Examine all parts for wear or damage Replace as required Fill the center cavity of piston rod seat until flush with grease Slide seat into piston with concave side filled with grease facing out Lightly grease the ball end of piston rod Push piston rod into piston until ball end of rod contacts seat Slide o ring and steel washer down rod and into piston Slide circlip down into piston and snap into the internal circlip groove of piston using circlip pliers NOTE Circlip must fully expand into groove
31. l Valve Repairs Accessories Parts List amp Description Exploded Unit Schematics IMPORTANT AS WITH ALL MECHANICAL EQUIPMENT PROPER OPERATING AND MAINTENANCE PROCEDURES ARE REQUIRED TO KEEP YOUR H E R O AIRLESS PUMP PERFORMING TO YOUR SATISFACTION THE FOLLOWING SAFETY OPERATING AND MAINTENANCE INSTRUCTIONS ARE IMPORTANT Read and understand this manual completely especially with regard to all safety precautions Read and follow instructions on all warning labels on your equipment Keep the warning labels clean and readable at all times Order new labels from your local distributor or from H E R O Industries if needed The manufacturer shall not be responsible for any loss damages or injury of any kind or nature whatsoever resulting from the use the equipment other than in strict compliance with the instructions cautions and warnings contained in this operating and instruction manual and as displayed on the face of the equipment This system is capable of producing 2400 psi spray pressure To avoid rupture and injury DO NOT operate this pump with components rated less than 3000 psi working pressure including but not limited to spray guns hose and connections Before servicing cleaning or removing of any part shut off power and relieve pressure H E R O INDUSTRIES 3 3008 300SL LEGEND Owner s Manual IMPORTANT SAFETY PRECAUTIONS WARNING Material issuing from the spray tip is at high pressure If fingers or any pa
32. l than the unit is bringing in The natural reserve of product in the paint chamber is reduced and harm to the membrane begins ALWAYS check your tips for wear when trouble shooting the equipment The 300S SL can support up to a maximum of a 021 tip H E R O INDUSTRIES 12 300S 300SL LEGEND Owner s Manual SPRAY TIP SELECTION AIRLESS TIP S FLOW RATE GALLONS PER MINUTE Orifice Size GPM Orifice Size GPM In Inches Flow Rate In Inches Flow Rate ETA AIRLESS TIP RECOMMENDATIONS VISCOSITY MESH SIZE Lacquer Finishes lea Jo Sanding Sealers O o Shellac clea o j EA EA 007 009 011 013 015 O11 013 Water Sealers clear 011 013 Medium Body 50 100 013 085 013 017 terior Wall Paint 1 CUENTE 017 019 Commercial Grade Architectural Coatings nterior Wall Paints Heavy Body 30 60 017 019 nterior Wall Primers proc e BET Dry Fall Quick Dry y 89 023 One Coat Primer Finish Paints ail 019 023 Blastomeries ExmHeay 021 031 Pigmented Water Proofer s 021 027 Block Filler 025 031 Fan width between 8 and 12 inches H E R O INDUSTRIES 13 300S 300SL LEGEND Owner s Manual TROUBLESHOOTING Hydraulic Energy Regulated Output H E R O is more than just our name it is the bases for the operation of the pump It is the regulation or control of hydraulic energy which allows the equipment to build and then deliver or have an output of pressure Onc
33. m draw of the motor under full load A minimum 50 and a maximum of 300 of airless spray hose may be used NOTE 50 x 3 8 paint hose part 117 should be used for every 50 x 1 4 paint hose part 114 over 100 100 total length of paint hose 2 of 50 x 1 4 paint hose 150 total length of paint hose 2 of 50 x 1 4 paint hose and 1 of 50 x 3 8 paint hose 200 total length of paint hose 2 of 50 x 1 4 paint hose and 2 of 50 x 3 8 paint hose 250 total length of paint hose 3 of 50 x 1 4 paint hose and 2 of 50 x 3 8 paint hose 300 total length of paint hose 3 of 50 x 1 4 paint hose and 3 of 50 x 3 8 paint hose Product viscosity altitude feet above sea level and vertical reach can effect pump performance and special accessories may be required Product viscosity may have to be further reduced at higher elevations Special High Altitude siphon assemblies part 4210 HA are available for use in areas at or above 5000 feet above sea level This kit may also prove beneficial if spraying thicker viscosity materials The larger diameter 3 8 paint hose should also be used Check drive belt part 66 100 tension frequently The belt will stretch with use and should be adjusted after 20 hours of operation and again after 50 hours Periodic checks after 50 hours should be made Failure of the drive belt is not covered by the equipment warranty so proper maintenance of the belt is i
34. mportant Regularly check fittings bolts nuts and connections for damage Tighten adjust or replace as required Check crankshaft alignment often An out of alignment crankshaft will cause the damage to the eccentric bearing H E R O INDUSTRIES 9 300S 300SL LEGEND Owner s Manual AIRLESS SPRAY PAINTING SUGGESTIONS AND TECHNIQUE A good airless spray application is the result of many factors Surface preparation which includes cleaning and degreasing priming material compatibility quality finish product and correct application technique are all important to the finished results The key to all good applications is a good spray gun technique The finished results are what the client will look at and base his opinion on Your skill and abilities are as important as good equipment and good paint Proper application techniques can easily be learned by using the following simple guidelines If you are not familiar with the basic spray techniques we recommend that you study this portion of the manual and practice the techniques shown Practice your technique on scrap cardboard or old newspaper until you feel confident FOR EXCELLENT RESULTS READ AND PRACTICE THESE TECHNIQUES Always strain all paint through a H E R O strainer bag The most common reason for airless sprayers to malfunction is foreign matter jamming the valves or plugging the tip Always strain the paint before putting through the pump Always spray at the lowest pressu
35. nded cord up to 100 feet require 10 3 wire grounded cord DO NOT exceed 100 feet of extension cord If distance is greater obtain and install extra length of H E R O airless spray hose READ THIS MANUAL THOROUGHLY H E R O INDUSTRIES 6 300S 300SL LEGEND Owner s Manual SETTING UP TO SPRAY 1 Remove unit from shipping carton Inspect exterior of unit for any signs of freight damage If any parts are found to be broken or damaged immediately contact the carrier and arrange for an inspection of the concealed damage Claims for freight damage must be made by the CONSIGNEE and not by the shipper The carrier accepts full responsibility for the safe delivery of merchandise upon pick up from the shipper 2 Attach intake hose assembly ref 1 onto hose barb ref 7 Tighten clamp refi 6 securely Attach prime hose ref 48 to prime valve refit 44 Secure with clamp ref 49 Attach paint hose to outgo tee refi 33 Attach gun to paint hose NOTE Spray tip and tip guard should be attached to gun prior to attaching to hose 6 Place intake siphon assembly into a clean 5 gallon pail 7 Install strainer bag accessory item 5GAL SB in pail and secure with large rubber band accessory item 106 NOTE Strainer bag must remain 4 inches from the bottom of pail 8 Trigger gun to release any pressure in the unit Use extreme caution to ensure that the gun is not directed towards anyone or any object which may be damaged NOTE Unit may c
36. ne fittings ref 63 punctured hydraulic feed line poor seal at hydraulic intake valve ref 62 or elbow ref 61 Tighten hydraulic feed line test for leaks or apply Teflon tape or pipe sealant on fittings Purge air as per detailed instructions below 3 Pressure control valve ball ref 87 worn out jammed remove hydraulic return line ref 72 from pressure control valve fitting ref 81 Remove pressure control valve ref 73 from elbow ref 61 Disassemble pressure control valve by removing valve seat ref 86 from body ref 82 Inspect for and remove foreign material Inspect ball for wear Install pressure control repair kit ref 88 if necessary 4 Piston rod refit 93 disconnected from piston ref 91 reconnect piston rod following detailed instructions on page 28 29 NO PRESSURE BLUE HYDRAULIC FLUID IN PAINT 1 Diaphragm broken replace with complete diaphragm refit 51 Closely follow detailed instructions on page 26 NOTE If and only if paint has contaminated the hydraulic side of the pump the entire hydraulic system must be cleaned and flushed Make sure to remove and clean the hydraulic tank screen ref 66 during this process Refill only with genuine H E R O LVO hydraulic fluid NOTE If lacquer has contaminated the hydraulic system the piston seal ref 90 must be changed in addition to flushing the system Closely follow detailed instructions on page 28 29 HYDRAULIC SIDE OF PU
37. nto the container for a few minutes to flush the prime valve Close prime valve 7 Trigger gun into paint container until thinner comes through See special notes from step 4 Re direct flow into waste container and continue spraying until thinner runs clear Heavily soiled thinners may have to be changed to complete cleaning job Lift siphon assembly and allow pump to run dry 9 Repeat procedure using a gallon of H E R O Equipment Wonder Wash solution If not using Wonder Wash unit must not be stored with water Only store with a non corrosive material Paint thinner solvent 10 Switch unit off and trigger gun to relieve remaining pressure 11 Remove and rinse gun handle filter in correct thinner a ee SPECIAL STORAGE INSTRUCTIONS In areas where the sprayer is NOT used 12 months of the year special preparations must be used for winter or off season storage Because solvents evaporate quickly they should not be used for long term storage A petroleum based solution solvent and oil should be used as an extended storage material DO NOT allow storage solution to freeze in the sprayer i Read all directions on back panel before using WONDER WASH RECT H E R O Equipment Wonder Wash available from your H E R O distributor will provide the added cleaning benefits of solvent at a much lower cost Suitable as a short term 1 2 days storage solution only H E R O INDUSTRIES 8 300S 300SL LEGEND Owner s
38. of piston Circlip has fully expanded when there is 13 64 space between circlip eyelets 12 NOTE If you experience difficulty installing circlip remove a small quantity of grease When installed correctly rod should move slowly and without any free play If piston seals ref 90 are required they may be installed now or after piston has been re attached Thread rod into eccentric bearing holder ref 98 until nut is flush with eccentric bearing Tighten snugly NOTE Piston rod nut must remain fully threaded onto rod if during installation the nut begins to loosen from rod re tighten to rod Place vise grips on rod to assist in tightening piston rod into eccentric Remove and discard old piston seals Piston seal kits ref 90 contain a total of four pieces 1 o ring flat washer 2 cup washers Take note of their installation sequence by referring to drawing The piston has three machined grooves which have been marked on the drawing as A B amp C Place flat washer one side has a contoured face into groove C then place ering in front of flat washer so that it fits into the contoured face of the flat washer Place one cup washer into groove B with open face of cup washer facing the end of piston towards hydraulic oil when installed Place second cup washer into groove A NOTE Always work from the front of the piston back so that you are always moving the cup washers over filled grooves This avoid
39. omplete During the priming procedure the diaphragm is exposed to its greatest amount of stress Use of the prime valve and a lightweight thinner which is compatible with the intended spray material will reduce diaphragm stress and reduce priming time The prime valve will also allow you to remove any unused paint left in the pump and hose at the completion of a job When the prime valve is open the material is pumped through the paint intake and outgo and back to the source by way of the prime valve return hose When closed no material should be escaping from the prime valve return hose ref 48 If material escapes through the prime valve return hose when the valve is closed spray pressure at the gun will be reduced The solution to almost all problems can usually be found in the paint side valves However before performing any repair or looking further the following are things which can cause an apparent sprayer failure without any mechanical problem ALWAYS check these items before preceding 1 Circuit breaker open or fuse blown 9 Gun handle filter plugged 2 Motor not plugged in 10 Paint hose plugged 3 Motor not switched on 11 Loose fitting or hole in siphon hose 4 Motor thermal reset popped 12 Intake siphon hose plugged 5 Too light or too long of an extension cord 13 Siphon screen missing or plugged 6 Pressure control knob loose or missing 14 Sprayer under pressure when restarting 7 Spray tip plugged 15 Straine
40. ontain storage solution 9 To remove storage solution add one gallon of thinner compatible with the type of paint to be used to the siphon pail 10 Turn pressure control handle ref 43 counter clockwise to lowest pressure setting 11 Be sure motor switch is in OFF position Plug unit into 115V 15 amp grounded circuit NOTE Jf using an extension cord you MUST use a 12 3 wire grounded cord up to 50 feet or 10 3 wire grounded cord up to 100 feet DO NOT EXCEED 100 FEET OF EXTENSION CORD f distance is greater purchase and install additional lengths of airless spray hose 12 Turn motor switch on 13 Turn prime valve handle reff 43 counter clockwise until fully open Allow thinner to circulate back into the siphon pail for a few minutes Then turn the prime valve knob clockwise to close the valve close tightly and direct the flow to the paint hose and gun Leave the pressure setting low 14 Trigger gun into waste container 15 Pour paint through strainer bag into siphon pail 16 Repeat steps 13 and 14 until paint flows freely NOTE Never turn prime valve back to prime position when the unit is under pressure 17 Spray a test pattern Begin by spraying a test pattern onto old newspaper or other scrap material 18 Increase the pressure slowly at first by turning the pressure control knob clockwise Continue increasing the pressure until the spray pattern is uniformed from top to bottom with no heavy areas Secure pres
41. r bag plugging siphon screen 8 Spray tip worn out UNLESS YOU ARE KNOWLEDGEABLE ABOUT THE REPAIR OF HIGH PRESSURE EQUIPMENT DO NOT ATTEMPT TO REPAIR AN AIRLESS SPRAYER YOURSELF ALWAYS FOLLOW ALL SAFETY PRECAUTIONS THE H E R O SERVICE VIDEO TAPE 1 620 VHS OR 1 620 BETA WILL PROVIDE COMPLETE SERVICE TRAINING SEE YOUR H E R O DISTRIBUTOR TO PURCHASE A COPY H E R O INDUSTRIES 16 300S 300SL LEGEND Owner s Manual TROUBLESHOOTING PRESSURE TEST To verify the performance of an airless sprayer use of pressure gauge is required A pressure gauge min 3000 psi installed at the gun using a new 021 tip and not less than 50 feet of H E R O airless spray hose is needed If you do not have access to these items your local H E R O authorized service center will be able to perform this test Your model 300S SL is manufactured to perform at 2650 psi Static pressure with lock ring ref 76 on pressure control valve ref 73 1950 psi Pressure drop when gun trigger is squeezed 2250 psi Spraying pressure after recovery time If your unit is unable to perform to the above pressure levels consult the troubleshooting guide for the required repair procedure DIAPHRAGM TEST If your unit is disabled and you are unable to perform a pressure test use the following procedures for determining the area to repair This test will divide the two halves of the equipment hydraulic from paint and make identification of your solution
42. re setting which will provide a uniform spray fan fig 1 page 11 Adjust pressure control knob so that paint is completely atomized Insufficient pressure will result in tailing Too much pressure will result in excess fog and over spray excess tip wear and increased sprayer wear and tear See setting up to spray page 5 Always spray at right angles to the surface being sprayed fig 2 page 11 Angling or arcing the nozzle toward the surface will cause uneven coverage and excessive over spray Always hold spray gun 12 15 inches from spray surface fig 3 page 11 Too close and the fan width will be reduced and material will be applied too heavily runs Too far from the surface and you will have excessive over spray and light coverage transparent Always move the gun parallel to the surface being sprayed at a consistent speed This avoids uneven coverage thick or thin areas Always start the spray stroke before triggering the gun and release the trigger before completing the stroke fig 4 page 11 This avoids heavy build up of paint at either end of the spray stroke Always lap your spray pattern by one half fig 5 page 11 This assures full coverage of the surface being painted H E R O INDUSTRIES 10 300S 300SL LEGEND Owner s Manual AIRLESS SPRAY PAINTING SUGGESTIONS AND TECHNIQUE Tailing Good Pattern DISTANCE CORRECT DISTANCE umop pue dn du8rens un amp poH TOTAL SPRAYGUN MOVEMENT arm movement
43. ref 43 further 2 Prime valve worn install prime valve repair kit ref 47 See page 25 for detailed instructions SPRAY PATTERN IS SPOTTY OR UNEVEN 1 Pressure is too low increase pressure slowly until problem is corrected 2 Spray material too thick thin as recommended by material manufacturer 3 Plugged siphon screen siphon tube gun filter or a combination inspect and clean or replace as required 4 Plugged tip remove and clean tip 5 Pump malfunctioning or unsuitable for the material refer to other areas of troubleshooting guide and check material requirements vs 300S SL output abilities SPRAY PATTERN LEAVES LINES OR FINGERS 1 Pressure too low increase pressure slowly until problem is corrected 2 Worn tip replace tip 3 Tip too small for spray material change to larger tip or increase pressure See material manufacturers recommendations EXCESSIVE OVERSPRAY OR FOGGING Pressure too high reduce pressure as required Material too thin follow material manufacturers recommendations re thinning Tip too large reduce tip size Improper application technique refer to proper application techniques on page 10 11 Too windy wait for wind to let up Quiet H E R O INDUSTRIES 22 300S 300SL LEGEND Owner s Manual REPLACEMENT OF INTAKE SEAT Tools or Supplies Required 1 4 Allan wrench 5 8 Socket Loc Tite 609 Torque Wrench Lacquer Thinner Vise Optional 1
44. rt of the body are placed near the tip of the spray gun it is possible that the spray could break the skin and inject some of the spray material If injury does occur seek immediate attention of a medical doctor Be prepared to inform the doctor what fluid was injected if the injury is of an injection nature Equipment and chemicals when used improperly can be dangerous Ed NEVER place any part of the body in front of the spray tip or aim the gun toward any part of the body NEVER point the gun toward any individual B NEVER treat any injury as a simple cut If injury does occur seek immediate medical attention Be prepared to inform the doctor what fluid was injected NEVER allow another person to use the sprayer unless he is thoroughly instructed on its operation and has read all safety precautions in this manual and all safety warning labels attached to unit NEVER use around children k NEVER attempt to perform any maintenance or service on any part of the unit spray system without first 1 Shutting off the unit 2 Disconnecting the power cord from the outlet 3 Relieving all pressure in the pump by triggering the gun 4 Locking gun trigger in LOCKED position with gun locked closed NEVER operate the sprayer without the tip guard complete and in place Ed NEVER spray any material in the vicinity of open flame pilot lights electrical outlets or any other source of ignition NEVER spray volatile materials
45. s damage that can occur to the cup washers if they have to be dug out of one groove and moved to another Avoid over stretching NOTE A small dental like tool may be used to assist in moving cup washers Apply grease to seals before installing in cylinder ref 57 Slide pump assembly into side frames and guide piston into cylinder NOTE Use care not to push the piston too far into cylinder If piston rings slide in too far they will pass through cylinder into the hydraulic cavity Complete dismantling of piston will be required to remove The piston can not be pulled back if the seals have gone through cylinder Reattach crossblock bolts as removed in step 2 Torque bolts to 30 foot pounds Reconnect hydraulic lines as removed in step 1 Add new hydraulic oil to hydraulic tank using only genuine H E R O LVO hydraulic oil Once the repairs have been completed the hydraulic oil will require purging to remove the trapped air See PURGING instructions on page 19 H E R O INDUSTRIES 29 300S 300SL LEGEND Owner s Manual PRESSURE CONTROL VALVE Tools or Supplies Required 11 16 Open end wrench 1 Open end wrench Teflon Tape or pipe sealant optional 1 Remove pressure control knob ref 74 and pull P C stem ref 77 out to the internal stop 1 16 to 1 8 thereby releasing hydraulic pressure Remove hydraulic return line ref 72 from P C fitting reff 81 Place 11 16 wrench on P C seat ref 87
46. seful accessory items he has to offer various types of tips extension poles for hard to reach areas extra hose etc Use of accessory items is often the difference between a good job and an excellent one OPERATING INSTRUCTIONS WARNING Do not attempt to operate this machine until you have read and understood all safety precautions and operating instructions Equipment and chemicals when used improperly can be dangerous Your H E R O airless sprayer has been fully factory tested prior to shipment BEFORE STARTING YOUR H E R O PUMP CHECK to ensure that the shipping seal has been removed from under the cap on the hydraulic tank Hydraulic tank should be at least 3 4 full of H E R O LVO hydraulic fluid CHECK all fittings and connections in the pump system hose and gun to ensure that they are tight CHECK to ensure that there is a spray tip in the gun and that the tip is the correct size for the coating you are to spray There are various tips available for each type of coating or configuration See Airless Spray Tip on page 12 13 for proper tip selection CHECK to ensure that you have H E R O strainer bags H E R O Wonder Wash appropriate thinner for the paint a waste container and any other accessories you may require for the job CHECK to ensure that you have adequate extension cord size and length if the machine cannot be situated immediately next to an electric outlet Distances up to 50 feet require 12 3 wire grou
47. spray material Annual replacement of the diaphragm is recommended as part of your preventive maintenance procedures H E R O INDUSTRIES 26 300S 300SL LEGEND Owner s Manual TUO Dw Y o 11 12 HYDRAULIC HEAD INSERT REPLACEMENT Tools or Supplies Required 1 4 Allan wrench o 4 45 3 Pressure cap Torque Wrench 17S Balls 2 Slightly sed May d 1 HERO hydraulic oil pio pi ada This small lip Steel ball will roll over 17S to secure i Insert 23A 1 Tilt unit up onto its nose resting vertically on handle ref 130 See Fig 1 Remove the eight bolts ref 17 securing the paint head ref 18 to the hydraulic head ref 53 Place rags around the cylinder area to absorb hydraulic oil which will leak while performing step 4 Remove the six bolts ref 59 securing the crossblock cylinder hydraulic head Bolts are accessed from the underside of crossblock Remove hydraulic head ref 53 to work bench Remove old broken or damaged insert ref 55 NOTE Insert should have no movement when properly installed If it is spinning or able to move back and forth but has not come completely free of the hydraulic head it may be possible to re tighten using the same installation instructions to follow See steps 8 10 Place new insert into the hydraulic head See fig 2 Insert will protrude through the hydraulic head by approximat
48. ss Replace or tighten as required 2 Piston seals ref 90 worn remove and replace piston seals following closely the detailed instructions on page 28 29 CORRECT STATIC PRESSURE BUT REDUCED SPRAYING PRESSURE Check with pressure gauge see page 17 for details l Spray tip worn out too large replace with new correct sized spray tip Tip most not exceed a newer condition 021 tip 2 Paint hose incorrect replace hose with genuine H E R O airless spray hose min 50 feet Steel braided hoses must not be used 3 Intake valve seat ref 12 worn replace intake seat closely following detailed instructions on page 23 4 Intake ball ret 13 worn replace intake balls when signs of wear deformation nicks or cuts are evident An out of round ball is the sign of a worn intake seat ref 12 and both items should be replaced Outgo seat refit 25 worn replace seat 6 Outgo ball ref 26 worn damaged replace outgo ball 7 Prime valve ref 34 bypassing start sprayer With prime valve closed tightly handle ref 43 turned clockwise fully check prime valve return hose ref 48 for material bypass Repair prime valve using ref 47 if material is bypassing m LOW STATIC PRESSURE LOW SPRAY PRESSURE Check with pressure gauge see page 17 for details Pressure control valve stem screw ref 79 loose remove pressure control knob ref 74 and inspect screw for looseness Screw should be
49. sure control setting by turning the silver lock ring ref 76 counter clockwise until snugly against the face of the pressure control knob If heavy areas are still visible at maximum pressure setting thin the paint with the correct thinner according to the paint manufacturer s recommendations KY v Aw H E R O INDUSTRIES 7 300S 300SL LEGEND Owner s Manual FLUSHING THE UNIT AT SHUTDOWN OR COLOR CHANGE If shutting down for a short period of time it is sufficient to trigger the gun to relieve pressure Then set the safety lock on gun to locked position with the gun locked closed and immerse the gun in a container of the correct thinner for the paint you are spraying 1 Remove spray tip from gun 2 Turn pressure control knob counter clockwise to low pressure setting Only use sufficient pressure to allow material to move through the sprayer DO NOT operate at or near full pressure 3 Remove siphon assembly from paint container 4 Trigger gun back into paint container until unit runs dry NOTE Pump and spray hose will continue to contain paint This paint may be recovered by placing prime hose into paint container and draining the remainder while re priming with cleaning fluid See step 5 and 6 5 Place siphon assembly in container of correct thinner for the spray product being used and prime the pump as shown in step 13 of Spraying See special notes from step 4 Allow thinner to circulate back i
50. tem ref 40 and unthread valve stem down through housing Remove existing o ring and washer ref 38 amp 39 from stem Replace with new parts ensuring they are installed in the correct order on stem Refer to diagram Thread stem back into housing until all threads are used Thread jam nut on to valve stem Re assembly valve Refer to steps 6 to 8 from instructions above Thread handle onto valve stem Allow stem to thread down onto ball internally Tighten handle firmly Hold handle while tightening jam nut Ref 42 tightly against handle Use of Loc Tite is optional H E R O INDUSTRIES 25 300S 300SL LEGEND Owner s Manual DIAPHRAGM REPLACEMENT Tools or Supplies Required e 1 4 Allan wrench e 4 45 3 Pressure cap Torque Wrench fe 3 8 Open end wrench 1 8 Allan wrench H E R O hydraulic oil Drip collection tray SOON nou 14 Items marked with are included in 4 22CRK Repair Kit Small steel Plate E Tilt unit up onto its nose resting vertically on handle ref 130 See Fig 1 page 27 Remove the eight bolts ref 17 securing the paint head ref 18 to the hydraulic head ref 53 Remove diaphragm ref 51 from the hydraulic head If the diaphragm s metal hubs are rough or sharp replace with complete diaphragm Continue at step 11 If the diaphragm s hubs are smooth and unworn replace with repair kit ref 52 Dismantle old diaphragm
51. tured by H E R O INDUSTRIES 2719 LAKE CITY WAY BURNABY B C CANADA Phone 604 420 6543 800 494 4376 Fax 604 420 8725 Purchased From 300SL LEGEND Serial Date of Purchase
52. uired for positive identification of washout or erosion Outgo valve ball ref 26 worn or jammed remove outgo valve ref 22 Invert valve and unthread outgo valve upper ref 29 from outgo lower ref 23 Remove crush washer refi 24 outgo seat ref 25 outgo ball ref 26 outgo cage ref 27 outgo spring ref 28 from outgo upper tunnel Inspect outgo ball to ensure that it is round and free of nicks or cuts Inspect for foreign material jamming ball Inspect ball and cage for wear Replace parts as needed Outgo valve ref 22 incorrectly assembled disassemble and reassemble outgo valve closely following detailed instructions on page 24 TOTAL LOSS OF PRESSURE DIAPHRAGM HAS NO MOVEMENT OR MOVEMENT CAN BE STOPPED SEE DIAPHRAGM TEST 1 Hydraulic intake valve ref 62 defective remove hydraulic feed line ref 63 from hydraulic intake valve Plug hydraulic feed line so hydraulic fluid does not drain Remove hydraulic intake valve from elbow ref 61 Check hydraulic intake valve to ensure that it flows in one way only into the cylinder Replace if necessary NOTE Item cannot be repaired H E R O INDUSTRIES 18 300S 300SL LEGEND Owner s Manual TROUBLESHOOTING SITUATION POSSIBLE CAUSE REMEDY TOTAL LOSS OF PRESSURE DIAPHRAGM HAS NO MOVEMENT OR MOVEMENT CAN BE STOPPED CONTINUED 2 Air lock created on hydraulic side of pump air entering hydraulic side due to loose hydraulic feed li
53. worn out or too large replace with new tip of correct size Tip must not exceed a good condition 021 tip 2 Paint hose incorrect type replace with genuine top quality H E R O airless spray hose Steel braided hose is not recommended 3 Too short a length of hose minimum 50 of airless spray hose is required Replace or add hose until a minimum of 50 is being used FLUID BEING SPRAYED OUT OF TIP PULSATES SPRAY HOSE CONTINUES TO MOVE VIGOROUSLY WHEN GUN TRIGGER CLOSED 1 Outgo valve ref 22 assembled incorrectly remove the outgo valve and reassemble closely following the instructions on page 24 2 Outgo valve ball ref 26 worn out or jammed inspect outgo ball to ensure that it is round and free of nicks or cuts Inspect for foreign material jamming ball Inspect seat and cage for wear Replace parts as required PUMP SPRAYS WATER OR SOLVENT AT CORRECT PRESSURES BUT WILL NOT SPRAY PAINT Check with pressure gauge see page 17 1 Air leak in paint intake siphon assembly check all fittings and hose clamps in intake assembly for tightness 2 Air leak in paint intake check for cracked or broken intake fittings Swivel connector ref 8 or hose barb ref 7 may be damaged due to over tightening Look for small black hairline fractures Replace damaged parts 3 Partial blockage in paint intake siphon hose ref 5 or siphon screen refi 2 clean and remove any blockages from intake siphon hose or screen
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