Instructions-Parts Merkur™ Bellows Pump Assembly 312795E EN For pumping isocyanates, UV coatings, and other moisture-sensitive materials. For professional use only. Important Safety Instructions Read all warnings and instructions in this manual. Save these instructions. See page 7 for model information, including maximum working pressure.
Related Manuals Contents Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Important Two-Component Material Information . 5 Isocyanate Conditions . . . . . . . . . . . . . . . . . . . . . 5 Material Self-ignition . . . . . . . . . . . . . . . . . . . . . . 5 Keep Components A and B Separate . . . . . . . . . 5 Moisture Sensitivity of Isocyanates . . . . . . . . . . . 5 Changing Materials . . . . . . . . . . .
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, 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 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.
Important Two-Component Material Information Important Two-Component Material Information Isocyanate Conditions Spraying or dispensing materials containing isocyanates creates potentially harmful mists, vapors, and atomized particulates. Read material manufacturer’s warnings and material MSDS to know specific hazards and precautions related to isocyanates. Prevent inhalation of isocyanate mists, vapors, and atomized particulates by providing sufficient ventilation in the work area.
Models Models Check your pump’s identification marking (ID) for the 6-digit part number. Use the following matrix to define the construction of your pump, based on ID the six digits. For example, pump Part No. B05FA0 represents a 5 to 1 ratio, 150 cc pump, with no DataTrak, a low noise exhaust, and v-packings To order replacement parts, see Parts section starting on page 22. The digits in the matrix do not correspond to the reference numbers in the Parts drawings and lists.
Pump Data Pump Data Model, Series Air Motor B05FA0, Series A M04LN0 B05FB0, Series A M04LT0 B05FA1, Series A M04LN0 B05FB1, Series A M04LT0 B12DA0, Series A M07LN0 B12DB0, Series A M07LT0 B12DA1, Series A M07LN0 B12DB1, Series A M07LT0 B15BA0, Series A M04LN0 B15BB0, Series A M04LT0 B15BA1, Series A M04LN0 B15BB1, Series A M04LT0 B15FA0, Series A M12LN0 B15FB0, Series A M12LT0 B15FA1, Series A M12LN0 B15FB1, Series A M12LTO B23DA0, Series A M12LN0 B23DB0, Series A M12LT0 B23DA1, Series A M12LN0 B23DB1, S
Component Identification Component Identification A H B J C K D E F L M G N P R ti15361a FIG. 1.
Component Identification 312795E 9
Installation Installation General Information NOTE: Reference numbers and letters in parentheses in the text refer to the callouts in the figures and the parts drawing. 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. FIG. 2 and FIG. 3 are only guides for selecting and installing system components and accessories.
Installation Prepare the Site Keep the site clear of any obstacles or debris that could interfere with the operator's movement. Ensure that you have an adequate compressed air supply. Have a grounded, metal pail available for use when flushing the system. Bring a compressed air supply line from the air compressor to the pump location. Be sure all air hoses are properly sized and pressure-rated for your system. Use only electrically conductive hoses.
Installation Grounding To maintain grounding continuity when flushing or relieving pressure: hold metal part of the spray gun/dispense valve firmly to the side of a grounded metal pail, then trigger the gun/valve. The equipment must be grounded. Grounding reduces the risk of static and electric shock by providing an escape wire for the electrical current due to static build up or in the event of a short circuit. Pump: See FIG. 4.
Installation Accessories • Air shutoff valve (A): isolates air line accessories for servicing. Locate upstream from all other air line accessories. • Gun air regulator (D): controls air pressure to the air-assisted spray gun. Install the following accessories in the order shown in FIG. 2 or FIG. 3, using adapters as necessary. Air Line • Bleed-type master air valve (E): required in your system to relieve air trapped between it and the air motor and gun when the valve is closed.
Operation Operation Pressure Relief Procedure Trapped air can cause the pump to cycle unexpectedly, which could result in serious injury from splashing or moving parts. Flush the Pump Before First Use The pump is tested with lightweight oil, which is left in to protect the pump parts. If the fluid you are using may be contaminated by the oil, flush it out with a compatible solvent. See Flushing, page 16. Trigger Lock 1. Lock the gun trigger. 2. Close the bleed-type master air valve. 3.
Operation Prime and Adjust the Pump NOTICE 9. In a direct supply system, with the pump and lines primed, and with adequate air pressure and volume supplied, the pump will start and stop as the gun/valve is opened and closed. The maximum fluid inlet pressure is 15 psi (0.1 MPa, 1.0 bar). Damage to the bellows may occur if you exceed this pressure. Do not use another pump or checking device to supply the bellows pump. 10.
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. Tighten Threaded Connections Before each use, check all hoses for wear or damage. Replace as necessary. Check that all threaded connections are tight and leak-free. 3.
Troubleshooting Troubleshooting NOTE: Check all possible problems and causes before disassembling the pump. Relieve the pressure, page 14, before checking or servicing the equipment. Problem Pump output low on both strokes. Cause Solution Restricted air supply lines. Clear any obstructions; be sure all shutoff valves are open; increase pressure, but do not exceed maximum working pressure. Exhausted fluid supply. Refill and reprime pump. Clogged fluid outlet line, valves, etc. Clear.
Repair Repair 2. Loosen the four mounting nuts. Use two people to lift the entire pump up and out from the mounting plate. Place it on a work bench. General Information • 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.
Repair 5. Push up the motor shaft. Remove the coupling nut (7). 6. Use a socket to remove the tie rod nuts (4). 7. Use a socket to remove the bottom two mounting screws. Disconnect the Air Motor 1. Follow all steps under Preparation, page 18. 2. Loosen the screws on the top cap. 8. Carefully remove the displacement pump, with the pump adapter attached. 3. Hold the coupling nut (7) with a wrench. Use another wrench to turn the motor shaft.
Repair Reconnect the Air Motor Reconnect the Displacement Pump 1. Screw the tie rods (3) into the bottom cover of the air motor. Torque to 50-55 ft-lb (68-75 N•m). 1. Align the straight edge of the pump adapter with the back of the air motor. Slide the pump adapter onto the tie rods (3). 2. As needed for the larger air motors, use two people to reattach. Align the tie rods (3) with the holes in the pump adapter. Carefully lower the air motor into place. 2.
Repair 312795E 21
Parts 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 (138-146 N•m). 4 M04xxx air motors only; counterbore end faces motor.
Parts Parts That Vary by Model Part No./Description Ref. No. 1 2 3* 4* 5* 6* 7* 8* 9 10 11▲ 12▲ 13▲ Part No. Description Qty.
Repair Kits Repair Kits LB050A and LB050B Kit Description 3.5 in. motor Coupling Collars (5) Package of 10 Connecting Kit Includes three tie rods (3), three tie rod nuts (4), air motor adapter, if needed (6), coupling nut (7), two coupling collars (5), and two shields (8) 4.5 in. motor LB100A and LB100B 4.5 in. motor 24A619 24A291 24A294 6.0 in. motor 7.5 in. motor LB150A and LB150B 3.5 in. motor 24A619 24A294 24A294 6.0 in. motor 7.
Repair Kits 312795E 25
Performance Charts Performance Charts Model B05Fxx Cycles per Minute 13 500 (3.5, 35) 25 38 51 63 14 (0.4 A 12 (0.34) A 400 (2.8, 28) 10 (0.28) B 300 (2.1, 21) 8 (0.23) B 200 (1.4, 14) 6 (0.17) C C 4 (0.11) 100 (0.7, 7) 0 Air Flow scfm (m3/min) Fluid Outlet Pressure psi (MPa, bar) 5:1 Ratio, 150cc/cycle 2 (0.06) 0.5 (1.9) 0 1.0 (3.8) 1.5 (5.7) 2.0 (7.6) 2.5 (9.5) Fluid Flow gpm (lpm) tested in No. 10 weight oil KEY A = 100 psi (0.7 MPa, 7 bar) B = 70 psi (0.
Performance Charts Model B15Bxx Cycles per Minute 15 23 30 38 45 53 61 16 (0.45) A 14 (0.40) 12 (0.34) 1200 (8.3, 83) A B 10 (0.28) 8 (0.23) 800 (5.5, 55) B 6 (0.17) C C 400 (2.8, 28) 4 (0.11) 2 (0.06) 0 0 0.2 (0.8) 0.4 (1.5) 0.6 (2.3) 0.8 (3.0) Fluid Flow gpm (lpm) tested in No. 10 weight oil Cycles per Minute 13 1600 (11.0, 110) A 1200 (8.3, 83) B 800 (5.5, 55) 25 38 KEY A = 100 psi (0.7 MPa, 7 bar) B = 70 psi (0.5 MPa, 5 bar) C = 40 psi (0.
Performance Charts Model B23Dxx 23:1 Ratio, 100 cc/cycle 2500 (17.2, 172) Cycles per Minute 15 23 30 38 45 53 61 A A B B 30 (0.85) C 20 (0.57) 40 (1.13) 2000 (13.8, 138) 1500 (10.3, 103) 1000 (6.9, 69) C 10 (0.28) 500 (3.4, 34) 0 0 0.2 (0.8) 0.6 (2.3) 1.0 (3.8) 1.4 (5.3) Air Flow scfm (m3/min) Fluid Outlet Pressure psi (MPa, bar) 8 1.8 (6.8) 3000 (20.7, 207) 60 (1.70) A 2500 (17.2, 172) 50 (1.42) A B 2000 (13.8, 138) 40 (1.13) B 1500 (10.3, 103) 30 (0.85) C 1000 (6.
Performance Charts Model B25Bxx Fluid Outlet Pressure psi (MPa, bar) 8 Cycles per Minute 15 23 30 38 45 53 61 25 (0.71) 3000 (20.7, 207) 2500 (17.2, 172) 20 (0.57) A A 2000 (13.8, 138) B B 1500 (10.3, 103) 1000 (6.9, 69) 15 (0.42) 10 (0.28) C C 5 (0.14) 500 (3.4, 34) Air Flow scfm (m3/min) 25:1 Ratio, 50 cc/cycle 0 0.2 (0.8) 0 0.4 (1.5) 0.8 (3.0) 0.6 (2.3) Fluid Flow gpm (lpm) tested in No. 10 weight oil KEY A = 100 psi (0.7 MPa, 7 bar) B = 70 psi (0.
Pump Dimensions Pump Dimensions D C B E A ti15391a ti15368a Pump Model B05FAx B05FBx B12DAx B12DBx B15BAx B15BBx B15FAx B15FBx B23DAx B23DBx B24FAx B24FBx B25BAx B25BBx B35DAx B35DAx 30 A B C D E in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) 33 (838) 6.9 (175) 5.8 (147) 9.7 (246) 35 (888) 33.5 (851) 6.9 (175) 10.8 (274) 9.7 (246) 35 (888) 33 (838) 6.9 (175) 5.8 (147) 9.7 (246) 35 (888) 33.5 (851) 8.6 (218) 11.7 (297) 11.4 (290) 35.6 (904) 33.5 (851) 8.6 (218) 11.
Wall Bracket Mounting Dimensions Wall Bracket Mounting Dimensions 6.9 in. (175 mm) 2.167 in. (55 mm) 8.5 in. (216 mm) 17.0 in. (432 mm) 6 x 0.400 in. (10 mm) ti15369a Technical Data Maximum fluid working pressure . . . . . . . . . . . . . . . . . See Pump Data, page 7. Maximum fluid inlet pressure . . . . . . . . . . . . . . . . . . . . 15 psi (0.1 MPa, 1.0 bar) Maximum air inlet pressure. . . . . . . . . . . . . . . . . . . . . . 100 psi (0.7 MPa, 7 bar) Minimum air inlet pressure . . . . . . . .
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.
