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Instructions - Parts
®
Delta Spray XT Gun
310692D
For Airspray, HVLP, and Compliant guns with pressure, siphon, and
gravity feeds.
300 psi (2.1 MPa, 21bar) Maximum Working Fluid Pressure
100 psi (0.7 MPa, 7 bar) Maximum Working Air Pressure
Important Safety Instructions
Read warnings and instructions in this manual.
Save these instructions.
See page 4 for selection list of models.
ti4819
Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441
II 2 G
Copyright 2004, Graco Inc. is registered to I.S.
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Related Manuals Contents Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Daily Gun Maintenance . . . . . . . . . . . . . . . . . . . . . 14 Manual Conventions . . . . . . . . . . . . . . . . . . . . . . . . 2 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Selection Charts . . . . . . . .
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Warnings Warnings The following warnings include general safety information for this equipment. More specific warnings are included in the text where applicable. WARNING FIRE AND EXPLOSION HAZARD - FE CED/IND General Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To help prevent fire and explosion: • Use equipment only in well ventilated area. Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and plastic drop cl
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Selection Charts Selection Charts Pressure feed spray guns Orifice Size in. (mm) HVLP Compliant Airspray .030 (0.75) 234647 234693 234636 .042 (1.0) 234648 234694 234637 .055 (1.4) 234649 234695 234638 .070 (1.8) 234650 234696 234639 .086 (2.2) 234651 234640 .110 (2.8) 234652 234641 .042 (1.0) 234653* 234644* .055 (1.4) 234654* 234645* .070 (1.8) 234655* 234646* .030 (0.75) 249856† .042 (1.0) 249857† .055 (1.4) 249858† .070 (1.8) 249589† * Guns included with hardened SST needle tips, and nozzle
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Selection Charts Gravity feed spray guns (without gravity cup) Orifice size in. (mm) HVLP Compliant Airspray .055 (1.4) 234658 234685 234662 .070 (1.8) 234659 234686 234663 Gravity feed spray guns with 16 oz. gravity cup Orifice size in. (mm) HVLP Compliant Airspray .055 (1.4) 234713 234721 234705 .070 (1.8) 234714 234722 234706 ™ ™ Gravity feed spray guns with 3M PPS gravity cup Orifice Size in. (mm) HVLP Compliant Airspray .055 (1.4) 234681 234689 234677 .070 (1.8) 234682 234690 234678 310692D
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Gun Selection Gun Selection HVLP Guns Compliant Guns An HVLP gun is a high transfer efficiency gun which lim- A compliant gun is a high transfer efficiency gun which its the air pressure at the aircap to 10 psi maximum. In has been tested to have a transfer efficiency greater some areas, an HVLP gun is required for compliance than or equal to HVLP guns. The Graco compliant guns with environmental standards. have no restrictions on aircap pressures, but the gun inlet pressure must remain und
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Nozzle, Needle, and Tip Selection Nozzle, Needle, and Tip Selection The chart below lists the available nozzle sizes and required fluid needle and nozzles for the Delta Spray XT guns. The HVLP, Compliant, and Airspray guns all use the same nozzle design and fluid needles. When spray- ing high flow rates and high viscosity materials use the larger nozzle sizes and when spraying light materials or low flow rates, use the smaller nozzle sizes. Nozzle Orifice Fluid in. Needle Needle Needle/No
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Installation Installation Top and bottom feed guns G E A D C H F B* ti4819 FIG. 1 Key: A Delta Spray XT Gun E Air Shutoff Valve B Fluid Inlet, 3/8 npsm (R3/8-19)* F Air Regulator CAir Inlet GAir Filter D Air Hose H Air Supply Line recommended 5/16 in. (7.9 mm) ID hose *Pressure and siphon feed guns will have bottom feed optional 3/8 in. (9.5 mm) ID hose insert. Gravity feed guns will have a top feed insert. 8 310692D
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Setup Setup 3. Install an air filter (G). See FIG. 1. Flushing the gun 4. Use a 5/16 inch (7.9 mm) I.D. air hose to minimize excessive pressure drop in the hose. Flush the spray gun before putting any paint 5. Connect the air hose (D) to the 1/4 npsm gun air through the gun. inlet (C). WARNING Read warnings, page 3. Follow Top and bottom feed C guns installation, page 8. 1. To flush the gun, use a solvent that is compatible D with paint to be sprayed. Hold a metal part of the gun firmly t
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Setup Connecting the fluid hose Connecting the fluid supply (Pressure feed guns only) For packages that include fluid cups, use the following chart for installation instructions. 1. To control fluid pressure to the gun, install a fluid regulator on the fluid line. Cup attachment Instruction Manual 2. Connect the fluid hose (J) to the gun fluid inlet (B) 3M PPS 310693 3/8-18 npsm [R 3/8-19] compound thread. Gravity Cup 308792 Siphon Cup 308792 Pressure Cups 308791 B Positioning the Air Cap J
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Setup 3. To establish the correct fluid flow, turn the fluid Adjusting the Spray Pattern adjustment knob (21) counterclockwise until no restriction of the trigger movement is felt, then turn 1. To achieve full fan pattern, open the pattern adjust- out another half turn. When the knob is turned far ment valve (25) by turning the knob fully counter- enough, the trigger should be able to touch the gun clockwise. handle when the gun is triggered. (Close) (Open) (Open) (Close) 25 21 ti4841a ti48
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Setup 7. To achieve a narrow spray pattern, turn pattern 9. To improve atomization, reduce the fluid flow rate. adjustment valve (25) clockwise. Increasing the air pressure can improve atomization but may result in poor Transfer Efficiency (TE) or non-compliant operation. For gravity feed HVLP guns, at 29 psi (200 kPa, 2.0 bar) gun inlet air pressure, the pressure at (Close) the aircap will be 10 psi (70 kpa, 0.7 bar). (Open) For pressre feed HVLP guns, at 40 psi (280 kPa, 2.8 bar) g
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Operation Operation 1. To achieve the best results when applying fluid: Pressure Relief Procedure Keep the gun perpendicular and 6 to 8 inches (150 to 200 mm) from the object being sprayed. WARNING Use smooth, parallel strokes across the surface to be sprayed with 50% overlap. Follow Pressure Relief Procedure, page 13 when Incorrect you stop spraying and before cleaning, checking, ser- vicing, or transporting equipment. Read warnings, page 3. 1. Turn off air and fluid supply. 2. Hold a
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Daily Gun Maintenance Daily Gun Maintenance WARNING Follow Pressure Relief Procedure, page 13 when you stop spraying and before cleaning, checking, ser- vicing, or transporting equipment. Read warnings, page 3. CAUTION Methylene chloride with formic or propionic acid is not recommended as a flushing or cleaning solvent with this gun as it will damage aluminum and nylon compo- nents. CAUTION Solvent left in gun air passages could result in a poor quality paint finish. Do not use any cleanin
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Daily Gun Maintenance 3. Connect the solvent supply hose to the gun. Flushing and cleaning Gravity and Siphon Feed Guns 1. For packages that include fluid cups, use the follow- ing chart for flushing and cleaning instructions. Cup attachment Instruction Manual ™ ™ 310693 3M PPS ti4854a Gravity Cup 308792 FIG. 14 Siphon Cup 308792 Pressure Cups 308791 4. Hold metal part of gun against a grounded metal container, trigger, and flush the gun with solvent 2. Continue to step 8 to perform daily c
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Daily Gun Maintenance 8. Remove the air cap retaining ring assembly (15) 12. Scrub the air cap retaining ring, air cap, and fluid and air cap (14). nozzle with the soft-bristle brush. 9. Trigger the gun while you remove the fluid nozzle (12) from the gun with the gun tool (28) 14, 15 12 28 ti4847a FIG. 20 ti4844b FIG. 17 To clean out air cap holes, use a soft imple- ment, such as a toothpick, to avoid damaging critical surfaces. CAUTION Clean the air cap and fluid nozzle daily, mini- T
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Daily Gun Maintenance 15. Dampen a soft cloth with solvent and wring-out the 16. After cleaning the gun, lubricate the following parts excess. Point the gun down and wipe off the outside with lubricant 111265 daily: of the gun. Fluid adjustment knob threads Trigger pivot pin Fluid needle shaft Lubricate ti4848a FIG. 22 Lubricate ti4819a FIG. 23 310692D 17
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Troubleshooting Troubleshooting WARNING Follow Pressure Relief Procedure, page 13 when you stop spraying and before cleaning, checking, ser- vicing, or transporting equipment. Read warnings, page 3. Problem Cause Solution Fluid flow is fluttering while spraying. 1. Fluid nozzle not tight enough. 1. Tighten fluid nozzle to 40 in-lb (4.5 Nm). 2. Fluid filter clogged. 2. Check fluid filter. 3. Fluid source empty. 3. Refill Fluid flow fades while spraying high 1. Air hose size is too restricte
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Service Service 2. Flush the spray gun, page 9. Replacing the air and fluid 3. Remove the air cap retaining ring (15A), seal (15B), packings and air cap (14). Tools needed: 28 12 15A 15B Gun Tool - provided 14 Packing Installation Tool - provided Adjustable Wrench Screw Driver Lubricant part no. 111265; see Accessories, page 28, to order ti4849b Compatible Solvent FIG. 24 Order Repair Kit 234828. See Parts starting on page 25. 4. Trigger the gun while you remove the fluid noz
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Service 6. Loosen the hex nut (9) with the gun tool (28). Replacing the spray housing o-rings and packings 1. With the spray housing (2A) removed from the insert 9 (4), use a mechanical pick to remove the o-ring (2B) from the housing (2A). 4 2A 36 2B ti4978a FIG. 26 7. Remove the spray housing (2A) and insert (4). ti4829b FIG. 28 2A 4 2. Remove o-ring (34) from the insert (4). O-ring (2B) is slightly larger than o-ring (34). 3. Install a new o-ring (34) into the insert (4). Install a new
