HVLP Gravity Feed Spray Gun 66222 Set up and Operating Instructions Distributed exclusively by Harbor Freight Tools®. 3491 Mission Oaks Blvd., Camarillo, CA 93011 Visit our website at: http://www.harborfreight.com Read this material before using this product. Failure to do so can result in serious injury. Save this manual. Copyright© 2008 by Harbor Freight Tools®. All rights reserved.
Save This Manual CAUTION, used with the safety alert symbol, indicates a hazardous situation which, if not avoided, could result in minor or moderate injury. Keep this manual for the safety warnings and precautions, assembly, operating, inspection, maintenance and cleaning procedures. Write the product’s serial number in the back of the manual near the assembly diagram (or month and year of purchase if product has no number). Keep this manual and the receipt in a safe and dry place for future reference.
b. Remove or cover objects from the area that you want to protect from overspray or paint dust. trigger or connect the tool to the air supply with the trigger on. d. Do not overreach. Keep proper footing and balance at all times. Proper footing and balance enables better control of the tool in unexpected situations. c. Operate only in a well-ventilated area. Paint thinners and solvents may be harmful if breathed. Always wear an ANSI approved ventilator when painting. d.
with the trigger is dangerous and must be repaired. d. Disconnect the tool from the air source before making any adjustments, changing accessories, or storing the tool. Such preventive safety measures reduce the risk of starting the tool unintentionally. Turn off and detach the air supply, safely discharge any residual air pressure, and release the throttle and/or turn the trigger to its off position before leaving the work area. e.
Symbols and Specific Safety Instructions cannot be built into this product, but must be supplied by the operator. 2. WARNING: The brass components of this product contain lead, a chemical known to the State of California to cause birth defects (or other reproductive harm). (California Health & Safety code § 25249.5, et seq.) 3. Only use with accessories rated to handle the forces exerted by this tool during operation. 4. Attach all accessories properly to the tool before connecting the air supply.
Functional Description Specifications Air Pressure Range 15-45 PSI Maximum Air Pressure 45 PSI Air Inlet 1/4” -18 NPS Air Consumption 12 SCFM @ 45 PSI Paint Cup Capacity 20 FL. OZ. Components and Controls Please refer to the photo on this page for important components and controls. Initial Tool Set Up/ Assembly Read the entire Important Safety Information section at the beginning of this manual including all text under subheadings therein before set up or use of this product.
Air Supply To prevent explosion: Use only clean, dry, regulated, compressed air to power this tool. Do not use oxygen, carbon dioxide, combustible gases, or any other bottled gas as a power source for this tool. 1. 2. Incorporate a shut-off valve, regulator with pressure gauge, and filter for best service, as shown in the diagram above. An in-line shutoff valve is an important safety device because it controls the air supply even if the air hose is ruptured.
Note: Residual air pressure should not be present after the tool is disconnected from the air supply. However, it is a good safety measure to attempt to discharge the tool in a safe fashion after disconnecting to ensure that the tool is disconnected and unpowered. Operating Instructions Read the entire Important Safety Information section at the beginning of this manual including all text under subheadings therein before set up or use of this product.
Tool Set Up To prevent serious injury from accidental operation: Turn off the tool, detach the air supply, safely discharge any residual air pressure in the tool, and release the throttle and/or turn the trigger to its off position before performing any inspection, maintenance, or cleaning procedures. To prevent serious injury: Do not adjust or tamper with any control or component in a way not specifically explained within this manual. Improper adjustment can result in tool failure or other serious hazards.
4. 5. 6. Test the paint viscosity by dipping a stick into the paint, then observing the rate paint drips from the end. Properly thinned paint will drip about 1 per second. Follow paint manufacturer’s recommendations. Experiment with scrap material to determine the correct paint viscosity. Always strain the paint when pouring it into the Cup (28). This will prevent lumps or impurities from clogging the Fluid Nozzle (2). squeeze the Trigger (36) all the way.
4. Practice on scrap material until the desired pattern is achieved. Understanding Paint Thinners and Solvents 1. Understand the difference between a paint “thinner” and a paint “solvent”. A thinner is used to thin the paint while it is wet. A solvent is used to dissolve the paint after it has dried.
4. 5. 6. 7. Do not stop your motion when spraying the work piece. Stopping will cause to build up, and run or sag. Hold the Spray Gun vertically. Holding the gun at an angle will affect the spray pattern. Do not spray too heavily. Heavy spray will cause drips, sags and runs. Build up the paint surface with several light coats. Apply each coat when the previous one is tacky but not yet dry.
User Maintenance Instructions Procedures not specifically explained in this manual must be performed only by a qualified technician. To prevent serious injury from accidental operation: Turn off the tool, detach the air supply, safely discharge any residual air pressure in the tool, and release the throttle and/or turn the trigger to its off position before performing any inspection, maintenance, or cleaning procedures. To prevent serious injury from tool failure: Do not use damaged equipment.
Problem Tool Troubleshooting Possible Causes Decreased output. 1. Not enough air pressure and/or air flow. 2. Obstructed trigger. 3. Blocked air inlet screen (if equipped). 4. Air leaking from loose housing. 5. Air Regulator set too low. Severe air 1. Cross-threaded housing leakage. components. (Slight air leakage is normal, 2. Loose housing. especially on older tools.) 3. Damaged connectors or housing. Inconsistent paint flow, blobs and splatters Paint blows out too hard Likely Solutions 1.
Paint Application TroubleShooting Problem Possible Causes Likely Solutions Paint surface is bumpy or “orange peeled” 1. Paint is applied too thick 1. Paint must be thinned properly before spraying 2. Adjust Fluid Control Knob (12) 3. Adjust Air Regulator (37) and Air Adjustment Valve (31) 4. Hold spray gun closer to surface during spraying. 2. Incorrect paint volume 3. Insufficient air pressure 4. Paint gun too far from paint surface during spraying Paint sags or runs 1. Excess thinning of paint 2.
PARTS LIST Part Description Q’ty 1 Air Cap with Lock ring 1 2 Fluid Nozzle 1 3 Air Ring 1 4 Piston Pad 1 5 Compression Ring 1 6 Needle Seal Spring 1 7 Air Piston Seal 1 8 Gun Body 1 9 Paint Needle 1 10 Paint Piston Spring 1 11 Lock Nut 1 12 Fluid Control Knob 1 13 Air Piston Box 1 14 Air Piston Packing 1 15 Air Piston 1 16 Piston Ring 1 17 Air Piston 1 18 Air Piston Spring 1 19 Spray Regulator Screw 1 20 Spray Regulator Knob 1 21 Screw 1 22
SKU 66222 For technical questions, please call 1-800-444-3353.
LIMITED 90 DAY WARRANTY Harbor Freight Tools Co. makes every effort to assure that its products meet high quality and durability standards, and warrants to the original purchaser that this product is free from defects in materials and workmanship for the period of 90 days from the date of purchase.
