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Repair/Parts
Merkur
Displacement Pump
For pumping isocyanates, UV coatings, acid catalysts, and other moisture-sensitive
materials. For professional use only.
See page 8 for model information, including maximum working pressures.
Important Safety Instructions
Read all warnings and instructions in this manual.
For complete warnings and instructions see your
pump or package manual. Hazard symbols refer to
specific procedure risks. Save these instructions.
™
Bellows
312793L
EN
ti14532a
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Table of Contents
Related Manuals for Graco Merkur Bellows
Summary of Contents for Graco Merkur Bellows
- Page 1 Repair/Parts ™ Merkur Bellows 312793L Displacement Pump For pumping isocyanates, UV coatings, acid catalysts, and other moisture-sensitive materials. For professional use only. See page 8 for model information, including maximum working pressures. Important Safety Instructions Read all warnings and instructions in this manual. For complete warnings and instructions see your pump or package manual.
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Page 2: Table Of Contents
Graco Standard Warranty ....28 Graco Information ......28... -
Page 3: Warnings
Warnings Warnings The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclama- tion 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. - Page 4 Warnings WARNING WARNING 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 com- ponent.
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Page 5: Important Two-Component Material Information
Important Two-Component Material Information Important Two-Component Material Information Material Self-ignition Isocyanates (ISO) are catalysts used in two component materials. Isocyanate Conditions Some materials may become self-igniting if applied too thick. Read material manufacturer’s warnings and Safety Data Sheet (SDS). Spraying or dispensing materials that contain isocyanates creates potentially harmful mists, Keep Components A and B vapors, and atomized particulates. -
Page 6: Moisture Sensitivity Of Isocyanates
Important Two-Component Material Information Moisture Sensitivity of NOTE: The amount of film formation and rate of crystal- lization varies depending on the blend of ISO, the Isocyanates humidity, and the temperature. Exposure to moisture (such as humidity) will cause ISO Changing Materials to partially cure;... -
Page 7: Important Acid Catalyst Information
Important Acid Catalyst Information Important Acid Catalyst Information This pump is designed for acid catalysts (“acid”) currently used in two-component, wood-finishing materials. Current acids in use (with pH levels as low as 1) are more corrosive than earlier acids. More corrosion-resistant wetted mate- rials of construction are required, and must be used without substitution, to withstand the increased corrosive proper- ties of these acids. -
Page 8: Models
Models Models Check your displacement pump’s identification marking (ID) for the 6-digit part number. Use the following matrix to define the construction of your displace- ment pump, based on the six digits. For example, displacement pump Part No. LB100A represents a 303 stainless steel bellows style displacement pump, 100 cc, with 3 UHMWPE and 2 PTFE v-packings. -
Page 9: Component Identification
Component Identification Component Identification ti14532a . 1. Component Identification Key: Connecting Rod Top Cap Pump Fluid Inlet Bellows Chamber Packing Nut Cylinder G Pump Fluid Outlet Pump Adapter Foot Cap 312793L... -
Page 10: Repair
Use another wrench to turn Always use Genuine Graco Parts and Accessories, the motor shaft. To available from your Graco distributor. If you supply your hold avoid damage to the own accessories, be sure they are adequately sized and top cap and the pressure rated for your system. -
Page 11: Replace The Bellows
Repair Replace the Bellows 5. Use a socket to remove the foot cap (42). Remove and discard the o-ring (41). Disassemble Bellows and Chamber 6. Hold the hex on the connecting rod (14) with a 19 mm (3/4 in.) wrench. Brace against tie rod or bench so it cannot turn. - Page 12 Repair Reassemble Bellows and Chamber seal (106) on the connecting rod (14). Hold connect- ing rod with 19 mm (3/4 in.) wrench. Install and 1. Slide the bellows bushing (6) and new bellows (7) tighten the retaining nut (105). Torque to 100-120 on the connecting rod (14).
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Page 13: Complete Pump Repair
Repair Complete Pump Repair 12. V-Packing Models: Remove the glands (23, 26), throat packings (24, 25), and spring (22). See F 10, page 14. Disassembly 13. U-Cup Models: Use an o-ring pick or pliers to 1. Follow all steps under Preparation, page 10. remove the spring clip (51), the u-cup (50), and the bearing (49). - Page 14 Repair 17. Put the hex of the piston (45) in a vise, then use a 2. Install check ball (34) and seat (33) in the top of the 23 mm socket to remove the piston rod (31). piston. Grease and install new o-ring (32). 18.
- Page 15 Repair 11. V-Packing Models: Install new piston spring (35). Lubricate and install male gland (40), new piston Apply grease. packings (37, 39), and female gland (38) on the dis- U-cup faces up placement rod (31). Lips must face toward the (toward cylinder cylinder.
- Page 16 Repair Apply grease. Apply thread lubricant. Torque to 100-120 in-lb (11-14 N•m). Torque to 91-109 ft-lb (123-148 N•m). Lips face toward cylinder. ti14535a . 14. Piston v-packings 13. Grease the outside of the displacement rod shaft 20. Push up on the motor shaft. Slide on the coupling and the piston, near the hexes.
- Page 17 Repair 312793L...
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Page 18: Parts
Parts Parts Models with V-Packings Lips face down. Lips face ti15222a Apply grease. Apply thread lubricant. Torque to 54-66 ft-lb (73-89 N•m). Torque to 91-109 ft-lb (123-148 N•m). Torque to 100-120 in-lb (11-14 N•m). Torque to 74-86 ft-lb (100-117 N•m). 312793L... - Page 19 Parts Models with V-Packings NOTE: Many parts are available in one or more Service/Repair kits. See page 24. Ref Description Part Ref Description Part CYLINDER KIT (includes 2, 12, 19, 21, BELLOWS CHAMBER KIT (includes 2, 32, 41, and 48) 12, 15, 17, 18, 21, 32, and 41) LB050A 24A828...
- Page 20 Parts Models with U-Cup Packings (Non-acid) U-cup faces down. U-cup faces ti15261a Apply grease. Apply thread lubricant. Torque to 54-66 ft-lb (73-89 N•m). Torque to 91-109 ft-lb (123-148 N•m). Torque to 100-120 in-lb (11-14 N•m). Torque to 74-86 ft-lb (100-117 N•m). 312793L...
- Page 21 Parts Models with U-Cup Packings (Non-acid) NOTE: Many parts are available in one or more Service/Repair kits. See page 24. Part Part Ref. Description Number Qty Ref. Description Number Qty JAM NUT BELLOWS CHAMBER KIT (includes 2, LB050B 24A635 12, 15, 17, 18, 21, 32, and 41) LB100B 24A637 LBO50B...
- Page 22 Parts Model LB100C with U-Cup Packings (Acid) U-cup faces down. U-cup faces ti29675a Apply grease. Apply thread lubricant. Torque to 54-66 ft-lb (73-89 N•m). Torque to 91-109 ft-lb (123-148 N•m). Torque to 100-120 in-lb (11-14 N•m). Torque to 74-86 ft-lb (100-117 N•m). 312793L...
- Page 23 Parts Model LB100C with U-Cup Packings (Acid) NOTE: Many parts are available in one or more Service/Repair kits. See page 24. Part Part Ref. Description Number Qty Ref. Description Number Qty JAM NUT 24A637 BELLOWS CHAMBER, 316 sst 17M106 DISPLACEMENT ROD KIT 24F296 2†...
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Page 24: Repair Kits
Repair Kits Repair Kits LB050A LB100A LB150A LB100C Kit Description LB050B LB100B LB150B (acid) 24E713 24E714 24E715 24E714 O-Ring Kit - Includes o-rings (2, 4, 5, 12, 16, 21, 32, 41, and 48) V-Packing Seal Kit 24A655 24A656 24A657 Includes: springs (22, 35), glands (23, 26, 38, 40), v-packings (24, 25, 37, 39), and o-rings (2, 12, 21, 32, and 41) U-Cup Seal Kit Includes: throat u-cup (50), bearing (49), and spring clip (51);... -
Page 25: Optional Kits
Optional Kits Optional Kits LB050A LB100A LB150A LB100C Kit Description LB050B LB100B LB150B (acid) Reinforced PTFE V-Packing Kit* Reinforced PTFE throat packings and glands, reinforced PTFE 24J858 24J859 24J860 piston packings and glands, o-rings, and springs PTFE Bellows Kit* 24J850 24J851 24J851 24J851... -
Page 26: Dimensions
Dimensions Dimensions Displacement Pump Dimensions Displacement (Height*) (Inlet Size) (Outlet Size) Weight Pump in. (mm) in. npt in. npt lbs (kg) LB050A, LB050B 23.6 (599) 3/4 in. 3/8 in. 26 (11) LB100A, LB100B, LB100C 23.6 (599) 3/4 in. 3/8 in. 30 (13) LB150A, LB150B 23.6 (599) -
Page 27: Technical Data
Technical Data Technical Data Maximum fluid working pressure LB050A and LB050B ......4500 psi (33.1 MPa, 310 bar) LB100A, LB100B and LB100C . -
Page 28: Graco Standard Warranty
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.