Instructions-Parts Repair Kits Accessory Kits See page 25 Merkur® High Pressure Sprayer 332245E EN For protective coating applications in hazardous or non-hazardous locations. For professional use only. See page 2 for model information, including maximum working pressures. Important Safety Instructions Read all warnings and instructions in this manual. Save these instructions.
Related Manuals Contents Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Merkur X48 Package . . . . . . . . . . . . . . . . . . . . . 3 Merkur X72 Package . . . . . . . . . . . . . . . . . . . . . 3 Bare Package . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Installation . . . . . . . . . . . . . . . . . . . . . . . . .
Models Models Merkur X48 Package Gun Part Hoses Gun Fluid Tip Size Hose Gun 16U920 XTR504 0.019 ✔ Accessories Gun Fluid Whip Suction Fluid Hose Tube Filter ✔ Maximum Maximum Maximum Fluid Working Fluid Flow Drain Inlet Air Rate Pressure Valve Pressure Kit psi (MPa, bar) psi (MPa, bar) gpm (lpm) ✔ ✔ 100 4800 (33, 330) 1.2 (4.5) Merkur X72 Package Gun Part Gun Hoses Gun Fluid Tip Size Hose 16U918 XTR704 0.
Warnings Warnings The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclamation point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks. When these symbols appear in the body of this manual or on warning labels, refer back to these Warnings. Product-specific hazard symbols and warnings not covered in this section may appear throughout the body of this manual where applicable.
Warnings WARNING EQUIPMENT MISUSE HAZARD Misuse can cause death or serious injury. • Do not operate the unit when fatigued or under the influence of drugs or alcohol. • Do not exceed the maximum working pressure or temperature rating of the lowest rated system component. See Technical Data in all equipment manuals. • Use fluids and solvents that are compatible with equipment wetted parts. See Technical Data in all equipment manuals. Read fluid and solvent manufacturer’s warnings.
Installation Installation A F D B E C M R N P L G H J K ti21104a FIG.
Installation General Information Components NOTE: Reference numbers and letters in parentheses in the text refer to the callouts in the figures. See FIG. 1. NOTE: Always use Genuine Graco Parts and Accessories, available from your Graco distributor. If you supply your own accessories, be sure they are adequately sized and pressure-rated for your system.
Installation Grounding Setup 1. If it is necessary to filter the material at the pump fluid outlet, install optional Fluid Outlet Filter Kit 16V583. See Accessories, page 25, for parts. The equipment and flush pail must be grounded to reduce the risk of static sparking. Static sparking can cause fumes to ignite or explode. Grounding provides an escape wire for the electric current. a. Use a wrench to hold the pump fluid outlet fitting in place and a second wrench on the drain valve tee fitting.
Operation Operation Pressure Relief Procedure Trigger Lock Follow the Pressure Relief Procedure whenever you see this symbol. This equipment stays pressurized until pressure is manually relieved. To help prevent serious injury from pressurized fluid, such as skin injection, splashing fluid and moving parts, follow the Pressure Relief Procedure when you stop spraying and before cleaning, checking, or servicing the equipment. See FIG. 4.
Operation Flush 4. Turn regulator adjustment knob (E) counterclockwise until it stops, and gauge (D) reads zero. D Flush the pump: • Before first use • When changing colors or fluids • Before repairing equipment • Before fluid dries or settles out in a dormant pump (check the pot life of catalyzed fluids) • At the end of the day • Before storing the pump. E C ti21106a 5. Open bleed type master air valve (C). 6. Flush hose and gun: a. Disengage gun trigger lock.
Operation Prime 7. Place drain tube in a grounded waste pail. Open drain/purge valve (S) slightly by rotating counterclockwise. 1. Follow Pressure Relief Procedure, page 9. 2. See FIG. 1. Lock gun trigger. Remove tip guard and spray tip from gun (H). Refer to gun manual. S 3. Place suction tube in a compatible fluid. ti21107a 8. Start the pump by rotating the air regulator adjustment knob (E) clockwise until pump begins to move.
Operation 6. Prime through drain valve: 7. Place drain tube in a grounded waste pail. Open drain/purge valve (S) slightly by rotating counterclockwise. b. Trigger gun slowly open regulator adjustment knob (E) until pump begins to cycle. Trigger gun into grounded pail until a steady stream comes from gun. TI8727a S ti21107a 8. Start the pump by rotating the air regulator adjustment knob (E) clockwise until pump begins to move. c. Engage trigger lock. 11.
Operation Spray 6. Disengage gun trigger lock. TI5048a NOTICE Do not allow pump to run dry. It will quickly accelerate to a high speed causing damage. 7. Spray a test pattern. Read fluid manufacturer’s recommendations. 1. Prime. See Prime, page 11. 2. Follow Pressure Relief Procedure, page 9. 3. Install tip and tip guard on gun. 4. Open bleed type master air valve (C). 8. Flush when done spraying. See Flush, page 10. 9. Follow Pressure Relief Procedure, page 9.
Maintenance Maintenance Preventive Maintenance Schedule The operating conditions of your particular system determine how often maintenance is required. Establish a preventive maintenance schedule by recording when and what kind of maintenance is needed, and then determine a regular schedule for checking your system. Replace lens covers on regulator gauge lenses when dirt makes gauges difficult to read. Tighten Threaded Connections Before each use, check all hoses for wear or damage. Replace as necessary.
Troubleshooting Troubleshooting NOTE: Check all possible problems and causes before disassembling the pump. Problem Pump fails to operate. Pump operates, but output is low on both strokes. Cause Solution Restricted line or inadequate air sup- Clear line or increase air supply. ply; closed or clogged valves. Check that the valves are open. Obstructed fluid hose or gun; fluid hose ID is too small. Open, clear*; use hose with larger ID. Fluid dried on the displacement rod.
Repair Repair 5. Lower the coupling nut (106) enough to remove the coupling collars (107), and then remove the coupling nut (106). General Information 107 • Reference numbers and letters in parentheses in the text refer to the callouts in the figures and the parts drawing. • Always use Genuine Graco Parts and Accessories, available from your Graco distributor. If you supply your own accessories, be sure they are adequately sized and pressure rated for your system. Disconnect the Displacement Pump 1.
Repair Reconnect the Displacement Pump 6. Screw the displacement pump into the adapter plate (103) until the cylinder top is flush with the top of the adapter plate. 1. Tilt the air motor onto its back, then hand turn the displacement pump into the adapter plate. Set the pump upright again. 2. Hold the air motor piston rod up with one hand. With your other hand, put the coupling nut (106) on the displacement rod. 3. Put the coupling collars (107) into the coupling nut (106) so large flanges point upward.
Repair Disconnect the Air Motor Reconnect the Air Motor 1. Flush the pump, if possible. See Flush, page 10. Relieve the pressure. See Pressure Relief Procedure, page 9. 1. Screw the tie rods (104) into the bottom cover of the air motor. Torque to 50-55 ft-lb (68-75 N•m). 2. Disconnect the air hose, fluid hoses, and the ground wire (109). 3. Hold the flats of the air motor piston rod with a wrench. Use another wrench to loosen the coupling nut (106). 2.
Repair 332245E 19
Parts Parts System Packages 2 3 10 1 Apply stainless steel pipe sealant to all non-swiveling pipe threads.
Parts System Packages Quantity System Packages Ref 1 Part --------- 2 3 4 5 6 16U947 16U948 277794 116401 116402 247301 7 8 9 197682 187147 H53825 H73825 10 11* 12* 13* 14* 15 16 XTR504 XTR704 15R874 245143 116746 116750 105332 15V204 17 ----- 18 164856 19 H52506 H72506 22 23 24 * 206994 --------- Description SYSTEM, pump, 48:1; see page 22 SYSTEM, pump, 72:1; see page 22 KIT, air control, X72 KIT, air control, X48 INSERT, control panel ADAPTER, elbow ADAPTER, quick connect HOSE, suction,
Parts Pump System Parts 1 Torque to 50-55 ft-lb (68-75 N•m). 2 Torque to 50-60 ft-lb (68-81 N•m). 3 Torque to 75-80 ft-lb (102-108 N•m). 4 101 Assemble pump (102) to top of within +/one thread. Torque jam nut of pump to 70-75 ft-lb (95-102 N•m).
Parts Cart Mount Kit 289694 16V175, Merkur X48 Pump System 16V174, Merkur X72 Pump System Ref. 101 102 103 104 105 106 107 108 109 110 118 Part M18LN0 16U916 16U917 15T392 15M662 15U606 15T311 184128 111799 238909 289694 16U944 Description MOTOR, air, 7.5 in LOWER, assy, 50cc; 16V174 LOWER, assy, 75cc; 16V175 ADAPTER, pump lower ROD, tie NUT, lock, m16 x 2 NUT, coupler COLLAR, coupling SCREW, cap, hex hd WIRE, grounding assembly KIT, cart GUARD, spring Qty.
Parts Pump Only Control Panel Kits 307 308 304 310 327 319 313 303 ti13468a 306 305 303 326 304 311 301 317 321 314 ti13567a ti13567b 16U948, X48 Air Control Kit 16U947, X72 Air Control Kit Ref. Part Description Qty. 301 114362 VALVE, ball 1 303 ----TUBE, 1/2 OD, cut to fit, 1.5 ft. order Tubing Kit 24D496 304 121212 ELBOW, swivel, 1/2T x 3/8 npt(m) 2 305 15T536 REGULATOR, air, 3/8 npt 1 306 ----ELBOW, swivel, 5/32 T x 1/4 npt 1 307 ----TUBE, black, cut to fit, 5 in.
Repair Kits Repair Kits Sprayer Models Description Merkur X48 Merkur X72 Drain Valve Kit Includes tee fitting (11), bleed valve (12), barbed fitting (13), and nylon tube (14). 16U950 16U950 Displacement Pump Rebuild Kit See manual displacement pump manual. 16U925 16U924 XTR Gun Repair Kit See gun manual. 248837 248837 Accessories Fluid Outlet Filter, 16V583 Ref.
Performance Charts Performance Charts Calculate Fluid Outlet Pressure Calculate Pump Air Flow/Consumption To calculate fluid outlet pressure (psi/MPa/bar) at a specific fluid flow (gpm/lpm) and operating air pressure (psi/MPa/bar), use the following instructions and pump data charts. To calculate pump air flow/consumption (scfm or m3/min) at a specific fluid flow (gpm/lpm) and air pressure (psi/MPa/bar), use the following instructions and pump data charts. 1. Locate desired flow along bottom of chart.
Performance Charts Merkur X72 72:1 Ratio, 50 cc/cycle Cycles per Minute 7000 (48, 483) 30 61 45 A 100 (2.8) 6000 (42, 420) 5000 (35, 350) B 80 (2.3) A 4000 (28, 280) 60 (1.7) 3000 (21, 210) B C 2000 (14, 140) 40 (1.1) C 1000 (7, 70) 0 120 (3.4) 0 0.2 (0.75) 0.4 (1.5) 20 (0.6) 0.6 (2.3) Air Flow scfm (m3/min) Fluid Outlet Pressure psi (MPa, bar) 15 0.8 (3.0) Fluid Flow gpm (lpm) tested in No. 10 weight oil Key: A B C 100 psi (0.69 MPa, 6.9 bar) 70 psi (0.48 MPa, 4.
Dimensions Dimensions 38.6 in. (980 mm) 18 in. (457 mm) 28 20.5 in.
Technical Data Technical Data Merkur High Pressure Sprayers Maximum pump air inlet pressure Ambient air temperature range Maximum fluid temperature Sound data Weight Maximum fluid working pressure 16U920, 16V175 16U918, 16V174 Ratio 16U920, 16V175 16U918, 16V174 Wetted Parts Displacement pump Spray gun Fluid hoses Suction assembly 332245E US Metric 100 psi 0.
Graco Standard Warranty Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name to be free from defects in material and workmanship on the date of sale 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.
