Instructions – Parts List BULLDOG HYDRA–CATR FIXED RATIO Proportioning Pumps 308225K EN 3000 psi (21 MPa, 207 bar) Maximum Working Pressure Two or Three Displacement Pump Models in Various Mix Ratios, Pressure Ratios and Flow Volume Available as Bare Pumps, Wall-Mounted* or Free-Standing* Models *Includes Mixing Manifolds, Automatic Pressure Relief Valves, Check Valves, Pressure Gauges and Regulators Read warnings and instructions. For a list of models, see page 6. Table of Contents Warnings . . . . .
Symbols Warning Symbol Caution Symbol WARNING CAUTION This symbol alerts you to the possibility of serious injury or death if you do not follow the instructions. This symbol alerts you to the possibility of damage to or destruction of equipment if you do not follow the instructions. WARNING INJECTION HAZARD Spray from the gun, hose leaks, or ruptured components can inject fluid into your body and cause extremely serious injury, including the need for amputation.
WARNING FIRE, EXPLOSION, AND ELECTRIC SHOCK HAZARD Improper grounding, poor ventilation, open flames, or sparks can cause a hazardous condition and result in fire, explosion, electric shock or other serious injury. D Ground the equipment and the object being sprayed. See Grounding on page 10. D Do not use the heater with flammable liquids, such as those having flash points below 200_ F (93_ C).
WARNING EQUIPMENT MISUSE HAZARD Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury. INSTRUCTIONS D This equipment is for professional use only. D Read all instruction manuals, tags, and labels before operating the equipment. D Use the equipment only for its intended purpose. If you are uncertain about usage, call your Graco distributor. D Do not alter or modify this equipment. Use only genuine Graco parts and accessories. D Check equipment daily.
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Model Charts Pressure and Ratio Ratings for Bulldog Pumps WARNING COMPONENT RUPTURE HAZARD To reduce the risk of over-pressurizing a component, which can result in an explosion and serious injury, never operate the system at a working pressure higher than the lowest rated component in the system. All fluid side components, such as dispensing valves; regulators; and hoses, must have a working pressure equal to or greater than the pressure given in Column B for each pump model.
Typical Installation NOTE: When pressure feeding the proportioning pump, mount fluid pressure gauges (J) at the proportioning pump inlets to monitor proper adjustment of the feed pump pressures. Never exceed 25% of the Hydra-Cat pump outbound fluid pressure on the feed supply. About the Typical Installations These pumps are designed to be part of a Hydra-Cat dispensing system that will proportion, mix, and dispense two-component fluids.
Typical Installation NOTE: When pressure feeding the proportioning pump, mount fluid pressure gauges (J) at the proportioning pump inlets to monitor proper adjustment of the feed pump pressures. Never exceed 25% of the Hydra-Cat pump outbound fluid pressure on the feed supply. About the Typical Installations These pumps are designed to be part of a Hydra-Cat dispensing system that will proportion, mix, and dispense two-component fluids.
Installation Bare Pumps Bare pumps are available for those installations which require a highly customized system. For a safe and efficient system, Graco recommends that the air and fluid components supplied with the Wall Mount and Cart Mount models also be used in customized systems. Refer to the Parts Drawings starting on page 28 for part numbers. In addition, the accessories shown in the Typical Installation drawings and discussed in the following pages of this manual should be used.
Installation 2. Air hoses: use only grounded hoses with a maximum of 500 feet (150 m) combined hose length to ensure grounding continuity. Grounding WARNING FIRE AND EXPLOSION HAZARD Improper grounding could cause static sparking, which could cause a fire or explosion. To reduce the risk of property damage or serious injury, follow the grounding instructions below. The following grounding instructions are minimum requirements for a system.
Installation Air Control Accessories Install the accessories in the order shown in Fig. 4. Mount only the air regulator (E) and a master air valve (A) at the pump. Mount all other accessories on separate wall brackets to reduce stress on the pump inlet. Note that one air filter (B) can serve multiple pumps by using an air manifold downstream from the air filter. 3.
Installation Automatic Pressure Relief Valves (continued) Two drainage bottle kits (38) are included with wall models (unassembled) and stand mount models (assembled) to catch the drainage if the automatic pressure relief valves (18) open. For the wall mount models, assemble the kit as shown in Fig. 5, page 11, and mount it securely to a wall or bracket. Use the tie wrap, supplied, to hold the hoses out of the way if necessary.
Installation – Optional Fluid Heaters All Models NOTE: For systems requiring one heater for each fluid, see page 40 to order the heaters and required plumbing (items 201 to 205). 201a 201b 201 202 204 1. Mount a heater to each side of the mounting bracket using the three screws (201a) and lockwashers (201b) supplied with each heater. See Fig. 8. 2. Connect a swivel union (202) to the outlet of each heater. See Fig. 8. OUT 3. Connect a swivel union (203) to the inlet of each heater. See Fig. 8.
Installation – Optional Fluid Heaters 23 204B 205A FA RES RES HARD 17A 202A FB HARD 17B RES HEATER HARD HEATER OUT OUT RES HARD RES IN 202B IN 203A 203B 02894 Fig. 10 For Three Displacement Pump Models 16A 17A NOTE: You must provide two hoses (FA, FB in Fig.10) and fittings to run from the heater outlets to the mixer manifold inlets. 17B 16B NOTE: To accommodate two resin fluid hoses, the mixer manifold (23) must be disconnected from the bracket and mounted remotely. 3.
Installation – Optional Solvent Pump 4. Couple the hose (303) and couplings (302). Connect the hose (303) to the adapter (301). NOTE: The optional solvent pump is not offered as a kit; order parts as needed. The optional parts shown here are listed on page 41. These instructions assume that the pump is being mounted to the back of the stand offered in this manual. The Typical Installations on pages 7 and 8 shows an alternate installation. Adjust your installation according to your specific needs. 5.
Flushing When to Flush the System How to Operate the Mixer Manifold D Flush the system before its first use to remove the light oil which was left in after factory testing. To open or close the mixer manifold fluid valves (LL) push the handle (KK) down to open and up to close. See Fig. 13. D Flush the manifold mixer (N), using the solvent pump, as frequently during the day as necessary to avoid exceeding the pot life limit of the material being pumped.
Flushing How to Flush the System WARNING HOT SURFACE HAZARD If your system is equipped with heaters, always shut off the main power to the heaters before flushing. Circulate the fluid through the system for at least 10 minutes to cool the fluid and the heater. This reduces the risk of serious injury from burns. NOTE: For the first time flushing, we recommend using mineral spirits solvent (also called white spirit) to flush out the oil.
Flushing If this is a first time flush . . . 12. Repeat the flushing procedure using a solvent compatible with the fluid you are going to dispense. When you are done flushing . . . 13. Remove the solvent supply from the feed pumps. Operate the pumps slowly to push all the solvent out of the lines, then stop the pumps. If you are not going to use the system . . . 14. Close all air regulators, master air valves and fluid shutoff valves. Follow the Pressure Relief Procedure on page 19.
Operation Pressure Relief Procedure Handling Plural Component Fluid WARNING WARNING INJECTION HAZARD The system pressure must be manually relieved to prevent the system from starting or spraying accidentally. Fluid under high pressure can be injected through the skin and cause serious injury.
Operation Monitor the Material Supply Check the Drainage Bottles and Hoses WARNING INJECTION HAZARD To reduce the risk of serious injury and property damage, regularly check and clean the drain hose and bottle for the automatic pressure relief valve. If material is allowed to dry in and clog the drain hose, the automatic pressure relief valve may not fully release the fluid pressure if it opens or may cause the drain hose to burst.
Operation 6. Open the mixer manifold (N) and trigger the dispense valve (S). Startup WARNING 7. Set the air pressure to the feed pumps at 88 psi (605 kPa, 6 bar) or 25% of proportional pressure at the fluid outlets, whichever is less. Use the gauges (J1) to monitor this pressure. Higher pressures may prevent the proportioning pump inlet ball checks from setting properly.
Operation Checking the Mix Ratio WARNING INJECTION HAZARD To reduce the risk of serious injury, follow the Pressure Relief Procedure on page 19 whenever you are instructed to relieve the pressure. NOTE: Since this is a fixed ratio system, you typically do not have to check the mix ratio. If the mixed fluid does not cure or harden properly, check the ratio of resin to hardener. 1. Flush the mixer manifold; see Step 11, page 17. 2. Follow the Pressure Relief Procedure, page 19. 3.
Shutdown and Care of the System WARNING INJECTION HAZARD To reduce the risk of serious injury, follow the Pressure Relief Procedure on page 19 whenever you are instructed to relieve the pressure. System Shutdown Care of the Pump Throat Packing Nuts Keep the throat packing nuts (JJ) filled with appropriate lubricant and check the tightness of the packing nut weekly. See Fig. 19. Always follow the Pressure Relief Procedure, page 19, before adjusting the packing nut.
Troubleshooting WARNING WARNING INJECTION HAZARD To reduce the risk of an injury from injection, splashing fluid, or moving parts, follow the Pressure Relief Procedure on page 19 if the spray tip/nozzle clogs and whenever you: D D D D are instructed to relieve the pressure, stop spraying, check or service any of the system equipment, or install or clean the spray tip. This chart uses the proportioner gauges to determine pump malfunctions. Faulty manifold check valves can mask pump cylinder problems.
Troubleshooting Problem System will not run or stops while running. Cause Solution Air pressure or volume too low. Increase, check air compressor. Closed or restricted air line or air valve. Open or clean as required. Fluid valves closed. Open fluid valves. Clogged fluid hose. Replace fluid hose. Air motor worn or damaged. Service air motor. See instructions in separate manual 306982. Displacement pump stuck. Service pump. See instructions in separate manual 307944 or 684004.
Service – Displacement Pump WARNING INJECTION HAZARD To reduce the risk of serious injury, follow the Pressure Relief Procedure on page 19 whenever you are instructed to relieve the pressure. 1. Unscrew the swivel union (33) from the bottom of the center displacement pump. Unscrew the swivel unions (126) from the outer displacement pumps. Remove the supply manifold (125) from the outer pumps. Unscrew the straight union (39) from the center displacement pump. See Fig. 21.
Service – Displacement Pump Disassembly 1. Remove the locknuts (113) from the top of the yoke (114) of the two outer displacement rods. See Fig. 22. Unscrew the outer locknuts (122) from the top of the tie plate (121) on the two displacement pumps. Use a screwdriver and hammer to loosen. NOTE: The tie rods (111) shown in Fig. 22 are removed from the tie plate (121) for clarity only and do not require removal. 113 111 115 4. Refer to the appropriate instruction manual for servicing the displacement pump.
Parts – Bare, Two Pumps Model 231897 101 105 113 1 114 111 1 115 122 106 121 107 108 116 104 2 109 103 1 112 1 Torque to 53–67 ft-lb (72–91 NSm) 2 Apply anaerobic sealant and torque to 100–200 ft-lb (135–270 NSm) 4 Label 4 118 4 HARD 120 RES 119 117 02915 28 308225
Parts – Bare, Two Pumps Model 231897 Ref. No. 101 Part No. Description 208356 103 100428 104 105 100128 100468 106 107 108 109 111 171122 100133 100307 172726 168455 112 150429 BULLDOG AIR MOTOR, see manual 307049 SCREW, hex cap head, 5/8–11 unc (2a) x 2” LOCKWASHER, 5/8” SCREW, hex cap head, 3/8–16 unc (2a) x 1” PLATE, mounting LOCKWASHER, 3/8” NUT, hex, 3/8–16 unc (2b) COUPLER TIE ROD, 8.937” (227 mm) long shoulder to shoulder GASKET Qty. 1 3 3 4 1 4 4 1 4 Ref. No. 113 Part No.
Parts – Bare, Three Pumps Models 231908, 231910, 231912, and 231915 101 105 113 1 114 111 106 1 115 122 123 107 108 121 122 104 2 109 103 116 1 119 112 4 117 2 Apply anaerobic sealant and torque to 100–200 ft-lb (135–270 NSm) 4 5 30 126 Label Apply stainless steel pipe sealant to all threaded connections.
Parts – Bare, Three Pumps Models 231908, 231910, 231912, and 231915 Ref. No. 101 Part No. Description 208356 103 100128 104 105 100428 100468 106 107 108 109 111 171122 100133 100307 172726 168455 112 113 150429 101926 BULLDOG AIR MOTOR, see manual 307049 SCREW, hex cap head, 5/8–11 unc (2a) x 2” LOCKWASHER, 5/8” SCREW, hex cap head, 3/8–16 unc (2a) x 1” PLATE, mounting LOCKWASHER, 3/8” NUT, hex, 3/8–16 unc (2b) COUPLER TIE ROD, 8.
Parts – Wall Mount, Two Pumps Model 231836 1 Apply stainless steel pipe sealant to all threaded connections except at swivels.
Parts – Wall Mount, Two Pumps Models 231836 Ref. No. 1 Part No.
Parts – Wall Mount, Three Pumps Models 231847, 231849, 231851, and 231854 1 Apply stainless steel pipe sealant to all threaded connections except at swivels 2 Included with bare pump 19 11, 12 1 2 13 2 10 22 21 20 14 1 18 1 17 2 16 15 42 1 38 11, 28 40 29 1 26 37 30 1 23 24 1 13 25 1 41 1 31 1 26 1 27 39 36 35 1 34 37 33 41 34 308225 1 1 02918A
Parts – Wall Mount, Three Pumps Models 231847, 231849, 231851, and 231854 Ref. No. 1 2 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 33 34 34a Part No.
Parts – Stand Mount, Two Pumps Model 231865 1 Apply anaerobic sealant and torque to 10–15 ft-lb (14–20 NSm) 1 50 53 51 1 52 53 1 54 51 50 55 02919A 36 308225
Parts– Stand Mount, Two Pumps Models 231865 Ref. No. 1 Part No. Description 231836 50 51 100321 100018 WALL MOUNT PUMP, see parts on page 33 NUT, hex, 1/2–13 unc LOCKWASHER, 1/2” Qty. 1 6 6 Ref. No. 52 53 Part No. Description Qty.
Parts– Stand Mount, Three Pumps Models 231876, 231878, 231880, and 231883 1 Apply anaerobic sealant and torque to 10–15 ft-lb (14–20 NSm) 1 50 53 51 1 52 38a 38b 38e 38c 38d 53 38j 1 54 38f 38g 38h 51 50 55 02920A 38 308225
Parts – Stand Mount, Three Pumps Models 231876 through 231883 Ref. No. 1 50 51 52 53 54 55 Part No. Description Ref. No. 1 Qty. Model Wall Pump 1 231876 231847 231878 231849 231880 231851 231883 231854 see table WALL MOUNT PUMP, see parts on page 35 100321 NUT, hex, 1/2–13 unc 100018 LOCKWASHER, 1/2” 217297 LEG, frame 100679 SCREW, hex cap head, 1/2–13 unc (2a) x 3-1/2” 178473 BRACE, frame 168422 CAP, square tube 6 6 2 6 1 6 Ref No.
Accessories Parts for Installing Optional Heaters Viscon HP Fluid Heaters The following components are recommended to install the heaters as instructed on page 13. Two displacement pump models need Items 201 to 204. Three displacement pump models need Items 201 to 205 and an additional resin and hardener hose of an appropriate length. Style A Ref. No. 201 Part No.
Accessories Parts for Installing Optional Solvent Pump Ref. No. Part No.
Accessories Air Control Accessories Bleed-Type Master Air Valve 300 psi (2.1 MPa, 21 bar) Maximum Working Pressure Relieves air trapped in the air line between the pump air inlet and this valve when closed. Controls air pressure to feed, solvent, or proportioning pumps. 1/2 npt inlets and outlets, with (2) 1/4 npt pressure gauge outlets. Fluid Control Accessories 107141 Fluid Filter 3/4 npt(m) inlet x 3/4 npt(f) outlet 5000 psi (34 MPa, 345 bar) Maximum Working Pressure 60 mesh (250 micron) screen.
Dimensions 7 Mounting Hole Layout for Air Motor 1 2 1 3 5 4 6 1 6 2 3 01154 02910A 5 4 1 21–1/4” (540 mm) 5 30–1/4” (768 mm) 2 32–3/4” (832 mm) 6 11” (279 mm) 3 28–1/4” (718 mm) 7 12–1/2” (318 mm) 4 17–3/4” (451 mm) 1 3.712” (94 mm) 2 3.46” (88 mm) 3 4” (102 mm) 4 2” (51 mm) 5 5/8–11 UNC (3) for pump mounting 6 0.44” (11.
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Technical Data Pumps Air operating range . . . . . 40–100 psi (280–700 kPa, 2.8–6.37 bar) Air consumption . . . . . . . . See example below Fluid inlet size . . . . . . . . . 3/4 npt Fluid outlet size . . . . . . . . 3/8 npt Air inlet size . . . . . . . . . . . 3/4 npt Maximum fluid outlet pressure . . . . . . . . . . . . . . 3000 psi (21 MPa, 207 bar) Maximum fluid inlet pressure . . . . . . . . . . . . . . 250 psi (1.7 MPa, 17 bar) Wetted parts . . . . . . . . . . .
Graco Standard Warranty Graco warrants all equipment manufactured by Graco and bearing its name to be free from defects in material and workmanship on the date of sale by an authorized Graco distributor to the original purchaser for use. With the exception of any special, extended, or limited warranty published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by Graco to be defective.
