Fig. 1 - Finishing Brands
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1. HP 302 Gravity Feed Hi Performance INSTRUCTION MANDAL Paint Spray Gun HP302 Model HP302 is an external mix high capacity spray gun designed for high quality production Spraying of paint and other finishing material from gravity plasitic cup The material inlet is located directly on the top of the spray gun and the air inlet is located at the bottom of the spray gun handle The fluid control knob and air control knob are both located at the rear of the spray gun The pattern control knob is located at the left side of the spray gun SPECIFICATIONS EET TOi 1 4 NPSM Subject to change based on requirement Maximum Air Pressure 100 psi Recommended Operating Ait Pressure RANSC ssissccvccces 40 70 psi Air Consumption 12 cfm 60 psi Ner WT iaeei 1 6 Ib Eiio M E teonde tel EE 600c c Recommended spray distance 8 10 FLUID NOZZLES ORIFICE PART NUMBER DTATETER HP302 14 LA 03 5 7 HP302 17 1 7mm 067 2 Ona 079 Standard size supplied with gun but for correction please check with the hi lighting on the side pannel of color box Other nozzle sets should be ordered separately A set comprises of air cap fluid nozzle and fluid needle DO NOT ASSUME that you are totally familiar with this unit until after having read ALL warning tags labels nameplates instruction sheets and any other explanatory material completely and thoroughly To avoid accidents this sho2. Fluid needle pin Trigger Pattem adjustment valve set Pattern adjustment knob Screw i Air inlet Swivel Joint for air inlet optional HP302 8 HP302 82 HP302 83 HP302 02 HP302 42 HP302 71 1 HP302 71 3 HP302 71 4 HP302 71 2 HP302 71 14 HP302 72 5 HP302 72 6 HP302 51 HP302 52 High Performance Gravity Feed Paint Spray Gun Replacing Parts For ordering spare parts please indicate the following information 1 Model number 2 Description 3 Part number For example HP 302 Filter P N G1 14 NOTE Regulator optional Air valve stem Air valve Spring Air control valve set Threaded pin for air valve Fluid needle spring Counter ring Fluid control knob Filter Gravity cup Cup lid Plug Socket spanner Socket wrench Spanner Brush When ordering these parts please indicate fluid nozzle size 1 4mm 1 7mm 2 0mm HV302 53 HV302 43 HV302 43 1 HV302 44 HP302 45 HP302 46 HP302 22 HP302 23 HP302 24 G1 14 G1 12 G1 15 TROUBLESHOOTING A A Dried material is clogging side port A and causing side port B to blow spray towards the clogged side Soak side ports in thinner to clean clog Do NOT poke any opening with metal objects B Dried material at Remove air nozzle Wipe off fluid tip fluid nozzle C using a cloth socaked in thinner or restricts air flow by soft brush C Loose air nozzle Fasten nozzle securely Air pressure set t
3. counterclockwise to increase or clockwise to decrease the Air flow NOTE Care should be exercised when handling spray gun to avoid damage to the orifice of the air cap and tip of fluid nozzle damage to these parts will result in irregular spray patterns MAINTENANCE It is important that spray gun be cleaned after daily use Cleaning is accomplished by spraying appropriate solvent or thinner through system Wipe exterior of spray gun with solvent soaked cloth or use attached brush to remove any accumulated material 1 Exchange of nozzle set When changing to another nozzle make sure that the complete nozzle set is exchanged A set comprises of air cap paint nozzle and fluid needle Assemble fluid nozzle before putting in fluid needle 2 Exchange of the self tensioning needle Packing The fluid needle seal 3 is effected by a Teflon Packing with self tensioning compression spring 4 To change the packing during general overhaul please use the socket spanner 29 provided 3 Cleaning a Empty material from gravity feed cup and replace with a suitable solvent b Operate trigger until all material traces have disappeared and gun is thoroughly clean c Wipe gun exterior with a solvent dampened cloth or provided brush 32 NOTE If fluid nozzle 1 2 is to be removed for thorough cleaning squeeze trigger to prevent damage of fluid needle tip 1 3 when unscrewing nozzle CAUTION Always exercise extreme care when us
4. erial leak from nozzle when Replace Clean Tighten Needle packing nut by counterclockwise trigger is released Loose packing nut 3022 7700
5. ing any solvent or thinner Never clean gun near fire flame or any source of heat or sparks Properly dispose of used cleaning materials CAUTION DO NOT soak entire spray gun in solvent or thinner in a longer period of time as this will destroy lubricants and possibly makes motion unsmooth NEVER use lye or caustic alkaline solutions for cleaning Such solutions will attack aluminum alloy parts of gun IMPORTANT Make certain that air cap and fluid nozzle are kept clean at all times If necessary remove these two components and soak them in solvent DO NOT use metal instruments to clean air cap or fluid nozzles as an irregular spray pattern may result The following lubrication procedures after thorough cleaning the gun must be observed to ensure effective high quality performance of spray gun Lubricate working points 17 1 3 amp 9 with straight mineral oil or castor oil 2 Periodically place a few drops of oil on tapered sections of fluid nozzle 1 2 to ensure easy operation of air cap When spraying water base materials coat fluid nozzle inside and outside with straight mineral oil after each use 3 Outer diameter of needle sleeve 1 3 of fluid needle assembly must be lubricated occasionally with straight mineral oil HP3O2 Air cap Fluid nozzle Fluid needle Needle packing nut Needle packing teflon Spring for needle packing Valve seat Teflon packing for air valve E 04 snap ring Tngger pin
6. olvents for example 1 1 1 trichloroethane and methylene chloride can chemically react with the aluminum in this gun and cause an explosion hazard Read the label or data sheet for the material you intend to spray Do not use spray materials containing these solvents with this spray gun OPERATION Prior to shipment this gun was treated with an anticorrosive agent before using this gun make sure that it is carefully flushed with thinner Tighten air cap which its stamping number must be in upward position 2 Attach material cup to the gun 3 Attach air supply line to 1 4 NPSM or 1 4 BSP as required air inlet 4 Check for correct tightening of nut 5 so that no air will escape but air valve stem 17 still slides CAUTION NEVER point spray gun at self or any other person Accidentai discharge of material may result in serious injury 5 Adjust air pressure to spray gun CAUTION DO NOT exceed 100 psi 6 Depress spray gun trigger to spray material 1 Adjust spray gun a Amount of material released density of fan spray is controlled by fluid oontrol knob 24 Q Figure 1 Turn knob counterclockwise to increase or clockwise to decrease the fluid flow b Width of fan spray is governed by pattern control knob 12 Figure 1 Trun knob counterclockwise to increase or clockwise to decrease air flow c Air quantity is controlled by Air Volume control knob 20 Figure 1 Turn knob
7. oo high Reduce air pressure C Spitting irregular or fluttering spray Tl Fluid nozzle cracked or worn Leak at thread of fluid nozzle Leak at fluid needle Tighter or replace Tighten fluid nozzle Tighten compression nut assembly or replace needle packing Needle Packing woun out Replace packing Insufficient fluid in cup Fill cup with fluid Vent hole in container cover clogged Clean out vent D Split spray pattern a E Unatomized or spattered spray Turn Pattern control knob C W to decrease fan width Turn fluid needle adjusting nut Cc W to increase fluid flow Air pressure too high Thin material or use larger orifice fluid nozzle set Increase pressure to within limit Reduce pressure Clean Material too heavy Insufficient air pressure Fluid pressure too high Dried material on tip of fluid nozzle or air jets of air cap Open control knob Clean Remove obstruction F Inadequate air delivery Air needle partially closed Dried material in air jets of air cap Obstruction in air line G Exessive fog Air pressure too high for viscosity Reduce air pressure and or open fluid of fluid control knob H Material leaking from fluid Loose cup or foreign substances on between e a a e a ee inlet of cup cup thread and Fluid inlet 5 P l Worn fluid needle Dried material in tip of nozzle I Mat
8. uld be done by All persons before attempting to operate assemble or disassemble the gun or any other part of the system Before disassembly or removal of any part of gun or attached components shut off compressor release pressure by depressing trigger and disconnect power source NEVER assume system pressure is zero Protect all lines against damage AVOID RISK If un certain as to safe condition of hoses replace with same type of a suitable replacement DO NOT Repair To avoid creating an explosive atmosphere work only in well ventilated areas Use of a face mask is recommended to prevent inhala tion of toxic material i DO NOT attempt to unclog backflush spray gun by squeezing trigger while holding finger in front of fluid nozzle 3021 53 1911 Non dirp Cup F Filter we ie QD Fluid Adjustment eee eo Air Adjustment Spray Pattern Adjustment A Air Valve Fig 1 Pressure may vary according to viscosity of material used Maximum working pressure of gun is 100 psi DO NOT EXCEED PRESSURE LIMIT OF GUN OR ANY OTHER COMPONENT IN SYSTEM Prior to daily operation make certain that all con nections and fittings are secure Check hose and all connections for a weak or worn condition that could render system unsafe All replacement components such as hose or fittings must have a working pressure equal to or greater than system pressure WARNING Halogenated hydrocarbon s
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