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Instructions – Parts List
Delta Spray
HVLP Spray Gun
308741N
100 psi (0.7 MPa, 7 bar) Maximum Working Fluid Pressure
100 psi (0.7 MPa, 7 bar) Maximum Working Air Pressure
40 psi (280 kPa, 2.8 bar) Maximum Compliant Inbound Air Pressure
U.S. Patent 6,019,293
This manual contains important warnings
Taiwan Patent 199585
and information.
Taiwan Patent 199601
READ AND KEEP FOR REFERENCE.
INSTRUCTIONS
Table of Contents
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Troublesho
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Symbols Warning Symbol Caution Symbol WARNING CAUTION This symbol alerts you to the possibility of serious This symbol alerts you to the possibility of damage to injury or death if you do not follow the instructions. or destruction of equipment if you do not follow the instructions. WARNING EQUIPMENT MISUSE HAZARD Equipment misuse can cause the equipment to rupture, malfunction or start unexpectedly and result in INSTRUCTIONS serious injury. This equipment is for professional use only. Read
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WARNING PRESSURIZED EQUIPMENT HAZARD Spray from the gun, hose leaks or ruptured components can splash fluid in the eyes or on the skin and cause serious injury. Do not stop or deflect fluid leaks with your hand, body, glove or rag. Follow the Pressure Relief Procedure on page 12 when: you are instructed to relieve pressure; stop spraying; clean, check or service the equipment; and install or clean fluid nozzles. Do not point the spray gun at anyone or at any part of the body. Tighten all
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Selection Charts TERMS: Light Fluid: Up to 18 seconds with No. 2 Zahn cup (20 centipoise) Medium Fluid: 19 to 28 seconds with No. 2 Zahn cup (20–64 centipoise) Heavy Fluid: Greater than 28 seconds with No. 2 Zahn cup (greater than 64 centipoise) -- 2.8 Volatile Organic Compounds, High-solid Polyurethanes, Heavy Waterborne Enamels NOTE: See pages 24–27 for further part number information. HVLP Spray Gun Assemblies Pressure Feed Guns Gun Assy. Includes: Needle/ Air Cap Orifice Pattern Material Us
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Selection Charts HVLP Spray Gun and Pressure Cup Selecting the Proper Needle/Nozzle Kit Assemblies The spray gun’s needle/nozzle kits range in size to provide different fluid flow rates. Includes: Gun Gun an and d Cup Cup As a general guideline, use the fluid nozzle that will Assy. Part No. Gun Part No. Cup and Reg- give the required flow with the needle fully triggered at ulator Part No. the lowest fluid pressure. 1 qt. (0.95 liter) 239568 239560 239802 For low flow rates or light viscosity flu
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Air Flow and Atomizing Pressure NOTE: All tests were completed with the 0.055 in. (1.397 mm) nozzle, large pattern air cap, and the pattern adjust- ment valve fully open. Air Flow Atomizing Air Pressure (inlet pressure versus atomizing pressure) 35 20 30 18 16 25 14 20 12 15 10 8 10 6 5 4 2 0 10 20 30 40 50 60 70 0 GUN INLET PRESSURE (psi) 10 20 30 40 50 60 70 GUN INLET PRESSURE (psi) Gun Inlet Pressure Nominal Atomizing Pressure psi (kPa, bar) psi (kPa, bar) 10 (70, 0.7) 1 (7, 0.1) 20 (140, 1.4
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Typical Installation H EF G A B C KEY A Delta Spray Gun See page 4 for gun part numbers. D B Fluid Inlet; 3/8 npsm (R3/8–19) C Air Swivel Inlet; 1/4 npsm (R1/4–19) D Air Hose Recommend 5/16” (7.9 mm) ID hose Optional 3/8” (9.5 mm) ID hose E Air Shut-off Valve F Air Regulator G Air Filter H Air Supply Line The Delta Spray HVLP spray gun was designed to Ventilate the Spray Booth produce the highest quality finish with today’s fluids as well as the Low V.O.C. (volatile organic compound) WARN
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Setup 1. Connect the Air Line 2. Connect the Fluid Hose NOTE: NOTE: Before connecting the fluid line, blow it out with air You must install an air pressure regulator (F) on the and flush it with solvent. Use solvent which is gun air line to control air pressure to the gun. See compatible with the fluid to be sprayed. Fig. 2. Install a fluid regulator (L) on the fluid line to control If your regulated air source does not have a filter, fluid pressure to the gun. See Fig. 4. install an air
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Setup 3. Flush the Spray Gun. 6. Adjust the Spray Pattern Before putting any paint through the spray gun, flush the gun out with a solvent that is compatible with the WARNING fluid to be sprayed, using the lowest possible fluid pressure and a grounded metal container. COMPONENT RUPTURE HAZARD Do not exceed the 100 psi (0.7 MPa, 7 bar) maximum fluid and air pres- sure of this gun. Higher pressures can cause parts to rupture and result in serious injury. Follow these steps to establish the correct
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Setup NOTE: A larger fluid nozzle at a reduced fluid pressure 6. Adjust the Spray Pattern (continued) will maintain the same flow rate, but slow down the B. Adjust the fluid flow using the fluid pressure fluid stream (velocity). When air is applied, this allows regulator (L) installed in the gun fluid line. Typical the air to act on the fluid longer and improve the atom- industrial flow rates will vary with regulator pres- ization. sures from 5 to 30 psi (34 to 210 kPa, 0.3 to 2.1 bar). D. If fu
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Setup 6. Adjust the Spray Pattern (continued) NOTE: If the fluid adjustment knob is turned in all the way the gun will emit only air. For continuous spraying, turn the fluid adjustment knob (8) counterclockwise until no restriction of the trigger movement is felt. When the knob is turned F out far enough, the trigger should be able to touch 01997 the gun handle when the gun is triggered. For the Fig. 13 typical fluid adjustment knob setting, turn the knob out 1/2 turn more. This setting prov
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Operation Pressure Relief Procedure Applying the Fluid When using the HVLP spray gun, instead of a conven- WARNING tional air spray gun, you may need to use a slightly PRESSURIZED EQUIPMENT HAZARD slower hand movement and make fewer passes with The system pressure must be manually relieved to the gun to coat a part. This is due to the reduced spray prevent the system from starting or spraying acci- velocity produced by lower HVLP air pressures, along dentally. To reduce the risk of an injury fro
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Daily Gun Care, Flushing, and Cleaning WARNING CAUTION PRESSURIZED EQUIPMENT HAZARD Clean all parts with a non-conductive solvent, com- To reduce the risk of a serious injury whenever you patible with the fluid being sprayed. Conductive are instructed to relieve pressure, follow the Pres- solvents can cause the gun to malfunction. sure Relief Procedure on page 12. Methylene chloride with formic or propionic acid is not recommended as a flushing or cleaning solvent with this gun as it will damage
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Daily Gun Care, Flushing, and Cleaning 4. Point the gun down into a grounded metal con- WARNING tainer, and flush the gun with solvent until all traces of paint are removed from the gun passages. PRESSURIZED EQUIPMENT HAZARD To reduce the risk of a serious injury whenever you are instructed to relieve pressure, follow the Pres- sure Relief Procedure on page 12. 1. Relieve the pressure. 2. Disconnect the fluid supply hose (J) and air supply hose (D) from the gun. 7035A Fig. 17 D J 5. Turn off the
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Daily Gun Care, Flushing, and Cleaning 8. Remove the air cap retaining ring (15) and air cap 12. With the gun pointed down, clean the front of the (14). gun, using the soft-bristle brush and solvent. 9. Trigger the gun while you remove the fluid nozzle (12) from the gun with the gun tool (28). 12 28 14, 15 7045A Fig. 19 7046A Fig. 21 CAUTION 13. Scrub the air cap retaining ring, air cap, and fluid nozzle with the soft-bristle brush. To clean out air Trigger the gun whenever you tighten or remove
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Daily Gun Care, Flushing, and Cleaning 14. Trigger the gun while you install the fluid nozzle 17. After cleaning the gun, lubricate the following parts (12) with the gun tool (28). Tighten the nozzle with lubricant 111265 daily: securely to 125–135 in-lb (14–15 Nm) to obtain a Fluid adjustment knob threads good seal. 15. Install the air cap retaining ring (15) and air Trigger pivot pin cap (14). Fluid needle shaft 12 1 Lubricate 28 14, 15 1 Torque to 125–135 in-lb (14–15 Nm) 7045A Fig. 2
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Troubleshooting WARNING PRESSURIZED EQUIPMENT HAZARD To reduce the risk of a serious injury, follow the Pres- sure Relief Procedure on page 12 before checking or repairing any part of the gun or system. PROBLEM CAUSE SOLUTION Fluid flow is fluttering while spraying 1. Fluid nozzle not tight enough 1. Tighten fluid nozzle to 125–135 in-lb (14–15 Nm). 2. Fluid filter clogged 3. Check fluid filter. 4. Fluid adjustment knob not prop- 5. Turn the fluid adjustment knob erly set out for less featherin
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Service Items Needed for Service 12 28 Gun Tool – provided Packing Installation Tool – provided 14, 15 Adjustable Wrench Screw Driver Lubricant part no. 111265; see Accessories, page 28, to order Compatible Solvent Fluid Packings Replacement WARNING PRESSURIZED EQUIPMENT HAZARD 7028A To reduce the risk of a serious injury, follow the Fig. 26 Pressure Relief Procedure on page 12 before checking or repairing any part of the gun or sys- tem. 4. Remove the fluid adjustment knob (21) and
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Service 12. Place the new fluid packings (5) and packing 20. To avoid galling of the fluid nozzle seat in the insert screw (8) onto the needle (13). See Fig. 27 for the (4), apply a thin film of lubricant to the seat. Trigger orientation of the parts. the gun while you install the fluid nozzle (12) with the gun tool (28). Torque the nozzle securely to 13. Insert the fluid needle (13) into the back of the 145–155 in-lb (16–17 Nm). insert (4) to install the fluid packings (5). 21. Tighten the he
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Service 22. To tighten the packing screw (8), turn the screw in 1. Relieve the pressure. until it touches the fluid packings (5), then tighten one full turn to pre-set the packings. Loosen the 2. Remove the air cap retaining ring (15) and air cap screw, then turn it in until it touches the packings (14). See Fig. 26, page 18. again. Tighten the screw 1/12 turn more (equal to half the distance between points on the hex head). 3. Trigger the gun while you remove the fluid nozzle (12) with the gun
