Graco 256200 - Manuals

Isocyanate Hazard 6 312766N Foam Self-Ignition Keep Components A and B Separate Changing Materials • When changing materials, flush the equip-ment multiple times to ensure it is thor-oughly clean. • Check with your material manufacturer for chemical compatibility. • Some materials use catalyst on th...

Typical Installation 312766N 7 Typical Installation Typical Installation without Circulation Key for F IG . 1. A Reactor ® Proportioner B Heated Hose C Fluid Temperature Sensor (FTS) D Heated Whip Hose E Fusion ® Spray Gun F Proportioner and Gun Air Supply Hose G Feed Pump Air Supply Lines 3/8 in. (...

Typical Installation 8 312766N Typical Installation with Circulation Key for F IG . 2. A Reactor Proportioner B Heated Hose C Fluid Temperature Sensor (FTS) D Heated Whip Hose E Fusion Spray Gun F Proportioner and Gun Air Supply Hose G Feed Pump Air Supply Lines 3/8 in. (76 mm) ID min. J Fluid Suppl...

Typical Installation 312766N 9 Typical Installation for Lubrication Applications Key for F IG . 3. AA Pump Air Regulator AB Air Line Lubricator AC Air Line Filter AD Bleed-Type Master Air Valve (required, for pump) AE Fluid Drain Valve (required) AF Bung Adapter AG Grounded Air Hose AH Grounded Flui...

Installation 10 312766N Installation System Accessories Refer to F IG . 3 and the Accessories on page 24. Air Line Accessories I nstall the following accessories in the order shown in the Typical Installation for Lubrica- tion Applications , using adapters as neces- sary: An air line lubricator (AB)...

Setup 312766N 11 Setup 1. Apply thread sealant to the male threads of the air needle valve (54) and the quick dis-connect fitting (55). Install into inlet port (AK). 2. Apply thread sealant to the male outlet fit- ting (BC) (not supplied) and insert into the outlet port (AL). 3. Use labels (25) prov...

Setup 12 312766N 5. Install air line (3/8 in. (76 mm) ID minimum) with quick disconnect air coupler (56). 6. Connect a grounded fluid hose (AH) to the 1/2 npt(f) fluid outlet (AL). In a circulating system, remove the pipe plug (2) and con-nect a fluid return line to the 3/8 npt(f) return port (AM). ...

Operation 312766N 13 Operation Pressure Relief Procedure 1. Shut off the air to the pump. 2. Close the bleed-type master air valve (AD). 3. Hold a metal part of the dispense valve firmly to a grounded metal pail. Trigger the valve to relieve pressure. 4. Open all fluid drain valves in the system, ha...

Operation 14 312766N Daily Startup 1. Verify that the air needle valve (54) is closed. 2. Connect the air line quick disconnect cou- pler (55) to the transfer pump. 3. Turn on the main air supply. 4. Slowly open the air needle valve until the transfer pump runs slowly. 5. Use the air needle valve to...

Repair 312766N 15 Repair Before you start • Have all the necessary repair parts on hand. • Clean all parts with a compatible solvent. Inspect parts for wear or damage and replace as needed. • Flush the pump, if possible. Stop the pump at the bottom of its stroke. Follow Pressure Relief Procedure on ...

Repair 16 312766N 3. Use a pliers on the top plate of the air valve piston (38) and a wrench on the piston rod (35) to unscrew the air valve piston from the piston rod. See F IG . 11. 4. Remove washer (10), lower spring (9), and gasket (27). Inspect for wear or damage and replace as necessary. See F...

Repair 312766N 17 3. Reinstall the spring (7) and gasket (27) on the cylinder cap (34) and screw the cap onto the cylinder (8). Screw the cylinder into the air motor base (13). See F IG . 10. Pump Lower Disassembly 1. Unscrew the air motor connecting ring (15). Lay the pump on its side and rotate un...

Repair 312766N 19 Pump Lower Reassembly 1. Lubricate packing (17) and bearing (18) with no. 2 lithium-based grease. 2. Install the bearing (18), and cup packing (17) with the lips facing down on the pump connecting rod (37). See F IG . 18. 3. Lubricate the piston seals (21) and bearing (22) with no....

Troubleshooting 312766N 21 Troubleshooting Problem Cause Solution The pump fails to operate. Dirty or worn air motor. Clean, service. Inadequate air supply or restricted lines. Clean lines or increase the air supply (see Technical Data). Closed or clogged air valves. Open or clear the valves. Clogge...

Parts 22 312766N Parts T1 2:1 Ratio Transfer Pump, 256200 Torque to 30-35 ft-lb(41-48 N•m) Lips face down Lips face up Grooves face down Use assembly tool 24B917 6. Thin, medium, and thick refers to the relative cross section thickness of the o-rings. 1 2 3 4 5 16 16d 16b 1 31 6 3 18 7 5 24 29 20 28...

Accessories 24 312766N Accessories Grounding Clamp Bleed-Type Master Air Valve 300 psi (2.1 MPa, 21 bar) Maximum Working Pressure Air Line Filter 250 psi (1.7 MPa, 17.5 bar) Maximum Working Pressure Air Line Lubricator 250 psi (1.7 MPa, 17.5 bar) Maximum Working Pressure Air Line Filter and Regulato...

Accessories 312766N 25 Air Regulator and Gauge 300 psi (2.1 MPa, 21 bar) Maximum Working Pressure Fluid Drain Valve 500 psi (3.5 MPa, 35 bar) Maximum Working Pressure Insert Tool 24B917 (4 in. long) Fluid Pressure Regulator 250 psi (1.7 MPa, 17.5 bar) Maximum Working Pressure Fluid Filter 300 psi (2...

Dimensions 26 312766N Dimensions 51.5 in. 33.7 in. 1/4 npt(f) Air Inlet 1/2 npt(f) Fluid Outlet (85.6 cm) TI17170a (130.8 cm) 43.0 in.(109.2 cm)

Technical Data 312766N 27 Technical Data Pressure ratio . . . . . . . . . . . . . . . . . . . . . . . . . . 2:1Maximum fluid working pressure . . . . . . . . . . . 360 psi (2.5 MPa, 25 bar)Maximum air inlet pressure . . . . . . . . . . . . . . . 180 psi (1.2 MPa, 12 bar)Pump cycles per 1 gallon (3.8...

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...