Advertisement
Quick Links
INSTRUCTIONS-PARTS LIST
This manual contains important
warnings and information.
READ AND KEEP FOR REFERENCE.
INSTRUCTIONS
Plural Component Mix Manifold
For Proportional Mixing of Plural Component Coatings
3000 psi (207 bar) Maximum Fluid Working Pressure
100 psi (7 bar) Maximum Air Input Pressure
Model 236–931
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
COPYRIGHT 1993, GRACO INC.
308–288
Rev. B
Supersedes A
01909A
Advertisement
Related Manuals for Graco 236-931
Summary of Contents for Graco 236-931
- Page 1 Plural Component Mix Manifold For Proportional Mixing of Plural Component Coatings 3000 psi (207 bar) Maximum Fluid Working Pressure 100 psi (7 bar) Maximum Air Input Pressure Model 236–931 01909A GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441 COPYRIGHT 1993, GRACO INC.
- Page 2 ........Graco Phone Numbers .
- Page 3 This equipment is for professional use only. Read all instruction manuals, tags, and labels before operating the equipment. Use the equipment only for its intended purpose. If you are uncertain about usage, call Graco, Chi- cago, Technical Assistance at 708–678–7200.
- Page 4 The components are pre-mixed in the integrator, then given a homogeneous blending as they pass through a The standard Graco mix manifold can blend most two- static mixer tube. Output from the mixer tube to the component epoxy or polyurethane paints. The mix spray gun may be controlled by a fluid pressure regula- manifold is not for use with “quick-setting”...
- Page 5 Functional Diagram – Component A (Resin) Dispense Component A (Resin) Supply Line Fluid Filter, 100 mesh minimum Check Valve Flow Meter Component A (Resin) Dispense Valve Air Purge Valve G Fluid Shut-off Valve Ratio Check Valve Component B (Catalyst) Supply Line Component B (Catalyst) Dispense Valve Solvent Purge Valve M Integrator...
- Page 6 If necessary, install pressure regulators PrecisionMix System: Solenoid Enclosure or a surge tank on the fluid inlets to the mix manifold, to reduce the fluid supply pressure. Contact Graco for Connect a ground wire from the solenoid enclosure’s information on fluid pressure regulators.
- Page 7 Installation Check the Resistance Have a qualified electrician check the resistance be- tween each system component and the true earth WARNING ground. The resistance must be less than 25 ohms. If the resistance is greater than 25 ohms, a different ground site may be required.
- Page 8 Installation DISPENSE VALVE PURGE VALVE or S or S or C or C or S 01912A 01914A Air Purge OFF Air Pilot Line Ratio Check Fluid Line “Weep Hole” or lubricator inlet (optional) Dump Valve Outlet (optional) Air Purge ON Air Pilot Line Component B (Catalyst) Supply Line Air Purge Inlet Fluid Line to Spray Device...
- Page 9 Installation Connect the Fluid Supply Lines To avoid contaminating your paint products, be sure the air supply is free of oil and water. NOTES: Filter the paint and solvent with a 100 mesh or The mix manifold requires a compressed air supply better fluid filter.
- Page 10 Operation NOTE: The following instructions presume a standard Plural Component Mix Manifold Controls system; with pressure supply tanks for the paint and (See Fig. 5) solvent. Also see Optional Fluid Supplies on page 6 for possible variations and their effect on the in- CAUTION structions.
- Page 11 Use the lowest possible fluid pressure when to purge both sides of the mixing block, but this will purging. result in longer purge sequences and high solvent usage. Call Graco Chicago Customer Service at WARNING 708–678–7200 before choosing this option. FIRE AND EXPLOSION HAZARD...
- Page 12 Operation Setting the Fluid Supply Pressure 2. Check that fluid valves are turned on and the fluid pressure to the mix manifold is properly set. Turn on the air supply and recharge the paint and 3. Check that the air pressure to the solenoids is solvent tanks with air.
- Page 13 Check the fluid supplies for the Component A, spect them, and replace all o-rings and v-packings. Component B, and solvent and refill them as nec- Repair kits are available from Graco. See the Service essary. section. Inspect the manifold and other fluid line compo- nents for fluid leaks.
- Page 14 Graco) available before you begin trouble- shooting. Checking the Actuation of the Valves Manually operate the valves by actuating the sole- An operational problem can be caused by a problem noids.
- Page 15 Notes...
- Page 16 Flat-blade screwdrivers. The air cylinders (111, 114) of the valve are spring-loaded, and parts may fly out Dielectric grease (Graco part no. 217–115) or spring apart when the valve is disas- Disassembling the Dispense Valves sembled. To reduce the risk of an eye injury, wear protective eyewear and follow the procedure below.
- Page 17 Service When reassembling, be sure the two air connection 3. Slowly remove the two screws (102) secured by cap nuts (115), while holding the cylinder cap (104) ports will be facing the outside of the machine. Set the down. knob (103) 2/3 of a turn open from fully closed. Be careful, the air cylinders (111, 114) are under To disassemble the fluid housing (128): compression and will spring apart and the detent...
- Page 18 Service Disassembling the Purge Valves Slowly let up on the top air cylinder (70) to release the spring compression. WARNING 3. Inspect the o-rings (62, 66, 69, 71) on the piston (65) and piston rod (64). See the Parts Drawing, INJECTION HAZARD page 19.
- Page 19 Purge Valve Parts Part No. 236–929, Purge Valve Ref. Ref. Part No. Description Qty. Part No. Description Qty. 190–038 AIR CYLINDER 111–119 SCREW, socket head; 111–139 O-RING, Buna–N M4 x 0.7 x 25 mm 111–140 SCREW, socket head; 111–120 SCREW, socket head; M4 x 0.7 x 70 mm M5 x 0.8 x 35 mm 111–141...
- Page 20 Dispense Valve Parts 116* 118a 121* 122* 123* *110 121* 124* 125* *112 *113 *110 131* *112 01913A...
- Page 21 Dispense Valve Parts Part No. 236–930, Dispense Valve Ref. Ref. Part No. Description Qty. Part No. Description Qty. 111–086 SCREW, socket head; 111–104 COUPLING, valve M6 x 1.0 x 100 mm 190–045 NUT, packing 111–087 SCREW socket head; 121* 111–106 PACKING, valve M6 x 1.0 x 90 mm 122*...
- Page 22 Manifold Parts NOTE: The PTFE o-ring (item 8) is a wetted part. An optional CV75 o-ring is available. See Accessories. 01916A...
- Page 23 Manifold Parts Part No. 236–931, Manifold Assembly NOTE: The manifold assembly includes the dispense and purge valves. See their separate parts drawings and lists. Ref. Ref. Part No. Description Qty. Part No. Description Qty. 236–930 DISPENSE VALVE ASSEMBLY 111–504 O-RING, CV75 (see page 20) 189–889 KNOB, ratio check...
- Page 24 Accessories Use Only Genuine Graco Parts and Accessories 01917A Ref. Part No. Description The following parts are available as accessories for the fluid mixing portion of the PrecisionMix system. 513–697 ADAPTER, male 513–816 ELBOW; Includes items I- to I Ref.
- Page 25 Accessories Use Only Genuine Graco Parts and Accessories NOTE: See the drawing on the previous page. Ref. Grounding Clamp and Wire 222–011 Part No. Description 12 ga, 25 ft (7.6 m) wire 504–235 ADAPTER, inlet 624–709 MOUNTING PLATE, PrecisionMix 100–644 SCREW;...
- Page 26 ....... . . 60 to 80 psi (4.2 to 6 bar). Graco warranty will be voided if air supply exceeds 100 psi (7 bar).
- Page 27 Notes...
- Page 28 Every form of liability for direct, special or consequential dam- ages or loss is expressly excluded and denied. in no case shall Graco’s liability exceed the amount of the purchase price. Any action for breach of warranty must be brought within two (2) years of the date of sale.