Graco 3A0420T- Manual

Important Two-Component Material Information 3A0420T 7 Important Two-Component Material Information Isocyanate Conditions Material Self-ignition Keep Components A and B Separate Moisture Sensitivity of Isocyanates Isocyanates (ISO) are catalysts used in two component foam and polyurea coatings. ISO ...

Important Two-Component Material Information 8 3A0420T Changing Materials • Changing material types used in your system requires special attention to avoid equipment dam-age and downtime. • Always clean the fluid inlet strainers after flushing. • When changing between epoxies and urethanes or polyur...

Overview 3A0420T 9 Overview Usage The XP is a mechanically linked fixed ratio system that can mix and spray most two-component epoxy and ure-thane protective coatings. When using quick-setting material (less than 10 minute pot life) a remote mix man-ifold must be used or materials must mix at the gu...

Initial System Setup 10 3A0420T Initial System Setup 1. Check the shipment for accuracy. Ensure you have received everything you ordered. See Component Identification , page 14. 2. Check for loose fittings and fasteners. 3. Install optional solvent flush pump kit 262393, if ordered. See manual 31086...

Models 3A0420T 11 Models Cart-Mounted Systems NOTE: All cart-mounted systems listed are Ex rated: See Accessories and Kits on page 55 for a list of all optional accessories. NOTE: The “Standard” mix manifold selection means the mix manifold is mounted on the cart and comes with mix- ers, 25 ft of 3/...

Models 3A0420T 13 Bare Proportioning Pump Packages Packages include motor, pump lowers, and all connec-tion hardware. NOTE: All pump packages are Ex rated except for the XP-h pump packages (284xxx): Hydraulically powered pump packages (XP-h) are not available as complete systems. Refer to manual 307...

Component Identification 14 3A0420T Component Identification Key: A Air Supply Hose for Motor B Main Air Controls; see page 15 C Air Inlet - 3/4 npsm(f) D High Pressure Fluid Pump E Motor F Fluid Heater (optional) G Solvent Flush Pump (optional); see page 16 H Solvent Flush Pump Air Controls; see pa...

Component Identification 3A0420T 15 Fluid Control Assembly Main Air Controls F IG . 2 AC AA AF AE AD AB AM AL AK AJ AN Key: AA Fluid ManifoldAB Mix ManifoldAC Circulation HandleAD Solvent Flush ValveAE Dual Shutoff HandleAF Fluid Pressure GaugesAG Fluid Supply Inlet (Behind Fluid Manifold)AH Fluid C...

Component Identification 3A0420T 17 Air Line • Bleed-type master air valve (CA): Required in your system to relieve air trapped between it and the air motor when the valve is closed. Be sure the valve is easily accessible from the pump and located downstream from the air regulator. • Pump air regula...

Setup 18 3A0420T Setup Location 1. Locate the proportioner on a level surface. 2. Position the proportioner for convenient operator access and maintenance, safe routing of air and fluid lines, and easy connection of components and accessories. 3. For permanent mounting, remove wheels and mount the f...

Setup 20 3A0420T Motor Position The motor position must be set for the volume mix ratio of the system. NOTE: Changing the motor position does not change the mix ratio. Check Motor Position 1. Verify that the correct pumps are mounted for your mix ratio by volume. See chart in Bare Proportion- ing Pu...

Setup 3A0420T 21 Connect Air Supply 1. Connect the air supply hose to the 3/4 npt(f) air filter inlet (C). NOTE: Use a 3/4 in. (19.1 mm) ID minimum air hose. Air consumption is 75 cfm per gallon per minute spraying. Do not use pin fitting type quick discon-nects. 2. Remove plugs as necessary for sol...

Pressure Relief Procedure 22 3A0420T Pressure Relief Procedure Relieve A and B Fluid Pressure 1. Engage the trigger lock. 2. Close the main air shutoff valve (CA). 3. Shut off heaters, if used. 4. Shut off feed pumps, if used. 5. Remove the spray tip and clean. 6. Disengage the trigger lock. 7. Hold...

Prime Empty System 3A0420T 23 Prime Empty System Prime A and B Fluids NOTE: The equipment is tested with mineral oil at the factory. If necessary, flush out the oil with a compatible solvent before spraying. See Empty and Flush Entire System (new system or end of job), page 29. Do not install the gu...

Prime Empty System 24 3A0420T Prime Solvent Flush Pump Follow instructions if the optional solvent flush pump kit is used. 1. Connect the flush pail ground wire to a metal pail of solvent. 2. Place the siphon tube and the solvent circulation hose (BG) in the pail of solvent. 3. Open the solvent prim...

Prime Empty System 3A0420T 25 Recirculate Prior to Spraying or Re-Prime After a Pump Runs Dry NOTE: Agitate, recirculate, and heat the material only as necessary to avoid mixing air into the fluid. Use the recirculation mode when heating the material is required. Note the temperature at the top of t...

Spray 26 3A0420T Spray NOTE: After the first day of spraying follow Pres-sure Relief Procedure, page 22, and tighten the throat packing nuts on both pumps. 1. If heaters are used, turn them on. To adjust the heater temperature, refer to the Viscon HP manual for instructions, and the Heat Fluid secti...

B Side Mix Manifold Restriction 3A0420T 27 B Side Mix Manifold Restriction The B side restrictor (AJ) controls “lead/lag” ratio errors of the A and B flow into the static mixer tubes. These errors occur momentarily when the gun opens. The error is caused by differences in viscosity, volume, and hose...

Flush Mixed Material 28 3A0420T Flush Mixed Material Flush the mix manifold when any of the following situa-tions occur. • breaks in spraying • overnight shutdown • mixed material in system approaching end of potlife To flush the entire system, see Empty and Flush Entire System (new system or end of...

Empty and Flush Entire System (new system or end of job) 3A0420T 29 Empty and Flush Entire System(new system or end of job) NOTE: • If the system includes heaters and heated hose, turn them off and allow to cool before flushing. Do not turn on the heaters until the fluid lines are clear of solvent. ...

Shutdown 30 3A0420T 7. Run the pumps until the A and B hoppers (J) are empty. Salvage the material in separate, clean con-tainers. 8. Close the main air shutoff valve (CA). 9. Wipe the hoppers (J) clean, then add solvent to each. Move the circulation lines (U) to waste con-tainers and push out the d...

System Verification 3A0420T 31 System Verification Graco recommends running the following tests daily. Check for Normal Operation Every time you start spraying: • Watch the fluid gauges (AF). A pressure drop occurs during pump stroke changeover. It should be quick and synchronous. • Stop the pumps o...

Maintenance 32 3A0420T Maintenance Hose Electrical Resistance Check electrical resistance of hoses regularly. If total resistance to ground exceeds 29 megohms, replace hose immediately. Filters Once a week check, clean, and replace (if needed) the following filters. • Both pump filters; see lower ma...

Troubleshooting 3A0420T 33 Troubleshooting ✖ Fluid ratio will be wrong. ◆ Purge all air from system before proportioning fluids. Problem Cause Solution System stops or will not start. Air pressure or volume too low. Increase; check air compressor. Closed or restricted air line or air valve. Open or ...

Repair 3A0420T 35 Repair Follow Shutdown procedure on page 30, which includes flushing, if service time may exceed pot life time, before servicing fluid components, and before transporting system to a service area. Pump Assembly The displacement pumps and air motor may be removed and serviced separa...

Repair 36 3A0420T Remove Motor 1. Stop the pumps near the bottom of their stroke. Fol-low Shutdown , page 30. 2. Disconnect the air line from the air motor (103). 3. Remove the air motor rod cover (121) and pump guards (122). 4. Use a wrench to hold the tie rod (102) flats to keep the rods from turn...

Repair 38 3A0420T Mix Manifold Assembly 1. Follow Pressure Relief Procedure , page 22. 2. Disconnect the fluid hose (25) and the flush hose from the mix manifold (36). 3. Loosen the union fittings (306) that connect to the mix manifold adapter fittings. 4. Remove the mix manifold assembly (36). 5. S...

Repair 3A0420T 39 7. Slide handle (311) onto valve stem and rotate approximately 90° until you feel it fully lock against the valve seat. Repeat for opposite side. 8. Remove handle then place handle (311) on valve stem (302) at the vertical, or near vertical, position. 9. Apply blue threadlock on th...

Repair 40 3A0420T Hoppers 1. If material is in the hopper pump out the remaining material. 2. If the pump has failed: a. Place a waste container beneath the plug on fit- ting (61). Remove the plug. b. Drain all material from hopper into the waste container. c. Install plug after material is no longe...

Repair 3A0420T 41 Optional Fluid Heaters NOTE: Wiring for heaters is not provided. See the Vis- con HP heater manual for wiring, repair, and parts infor-mation for explosion-proof heaters. Service and Repair 1. Follow Pressure Relief Procedure , page 22. 2. Disconnect the fluid lines and electrical ...

Parts 42 3A0420T Parts Cart-Mounted System 1 15 14 13 16 11 3 17 18 9 8 7 5 10 12 17 64 50 53 38 54 13 13 11 52 1. Apply anaerobic pipe sealant to all non-swiveling pipe threads. 2 r_571101_3a0420a_30a r_571101_3a0420a_30a

Parts 3A0420T 43 Cart-Mounted System Continued 23 22 4 18 5 6 24 55 56 58 59 60 61 62 24 24 22 41 37 35 36 32 27, 28 26 52 48 18 5 1 57 69 49 “A” 49 “B” 51 70 27, 28 32 27, 28 25 29 30 31 r_571101_3a0420a_44a-1 r_571101_3a0420a_45a TI17434a 90 89 65 (inside hopper) Standard Mix Manifold Models 66

Parts 50 3A0420T Bare Proportioning Pump Package 1 Torque together to 50-60 ft-lb (68-81 N•m). Torque to 145-155 ft-lb (196-210 N•m). Apply blue thread sealant. Insert lanyard from locking pin onto pumps (17, 18) as shown. Do not apply lubricant. Torque to 70-80 ft-lb (95-108 N•m). Apply lithium gre...

Parts 3A0420T 53 Fluid Circulation Manifold with Over Pressure Relief Valve Assembly 262784 (XP35); 262783 (XP50); 262806 (XP70) ✖ Not shown. Shipped loose. ★ For XP35 systems only. ◆ For XP50 systems only. † For XP70 systems only. NOTE: Loose fittings are supplied with replacement manifold to also ...

Recommended Spare Parts 54 3A0420T Recommended Spare Parts Keep these spare parts on hand to reduce downtime. Pump Repair Kits See page 13 to see what pumps are used on your sys-tem. See lower manual for repair kits. Pump Filter O-rings (packs of 10) 262483, Top o-ring244895, Middle o-ring262484, Bo...

Accessories and Kits 3A0420T 55 Accessories and Kits Acceptable For Use in Explosive Atmospheres Blue 7 Gallon Hopper Kit, 24F376Green 7 Gallon Hopper Kit, 24F377 Mount to the sides of the XP system. See manual 406860 for more information. Solvent Pump Kit, 262393 For supplying solvent to the mix ma...

Technical Data 3A0420T 57 Technical Data XP Proportioners U.S. Metric Maximum Fluid Working Pressure See Models section beginning on page 11. Maximum Air/Hydraulic Oil Working Pressure See Models section beginning on page 11. Combined Fluid Output (cc/cycle) See Models section beginning on page 11. ...

Dimensions 58 3A0420T Dimensions Weight: Full XP35, XP50, or XP70 System with heaters, solvent flush pump, and hoppers 575 lb 261 kg Bare XP35, XP50, or XP70 system with no heaters, solvent flush pump, or hoppers 425 lb 193 kg XP35, XP50, or XP70 Pump only 286 lb 130 kg XP-h System 290 lb 132 kg 32 ...

Dimensions 3A0420T 59 6.75 in. (171.45 mm) 16.90 in. (429.26 mm) 40 in. (1016 mm) 15.25 in. (387.35 mm) 22 in. (558.8 mm) 32 in. (812.8 mm) Floor Mounting Dimensions, Top View

Dimensions 60 3A0420T Bare Proportioner Mounting Hole Dimensions The dimensions below is the minimum opening size for mounting a bare proportioner. 7.5 in. (190.5 mm) 3.75 in. (95.25 mm) 5.06 in. (128.52 mm) 10.375 in. (263.525 mm) 3/8-16 (4x) 10.125 in. (257.175 mm) 14.35 in. (364.49 mm) 9.25 in. (...

Dimensions 62 3A0420T Floor Stand 24M281 Dimensions Hydraulic Unit Dimensions ti19047a 21.2 in. (538 mm) 30.3 in. (770 mm) 17.8 in. (451 mm) 32.7 in. (829 mm) ti19048a 53 in. (1346 mm) 30.3 in. (770 mm) 17.8 in. (451 mm) Shown installed on floor stand

All written and visual data contained in this document reflects the latest product information available at the time of publication. Graco reserves the right to make changes at any time without notice. For patent information, see www.graco.com/patents. Original instructions. This manual contains Eng...