The LINCOLN PILE DRIVER® III PUMP ASSEMBLY, Series "D", models 2318, 2320, 2326, 2353, 2368, and 84921, is a robust, positive displacement reciprocating pump designed for industrial applications. It operates as a double-acting pump, meaning it dispenses material on both the "up" and "down" strokes, enhancing efficiency. This pump is specifically engineered to handle various industrial type materials such as sealants, adhesives, and inks, which often have a tendency to dry out and build up on pump components.
Function Description:
The primary function of the PILE DRIVER® III PUMP ASSEMBLY is to transfer and dispense viscous materials under pressure. It achieves this through a reciprocating action driven by an airmotor (not part of this specific assembly but referenced for operation). The pump's design incorporates features to mitigate common issues associated with pumping challenging materials, such as rapid wear of gland packing and leakage due to material buildup and pressure fluctuations.
Important Technical Specifications:
- Pump Stroke: 6 inches (152 mm)
- Output per cycle: 44 cubic inches (721 cc)
- Operating Temperature: -30°F to +160°F (-34°C to +71°C)
- Max. Recommended Speed: 75 Cycles/Minute
- Output at 75 cpm: 14.3 gpm (54.1 liter/min)
- Wetted Part Materials: Carbon steel, Bronze, Polyurethane, Nitrile
- Weight: 78 lbs. (35.4 kg.)
- Outlet: 1-1/2 NPTF
Model-Specific Maximum Delivery Pressure and Airmotor Compatibility:
The pump assembly is designed to work with various airmotors, each providing different pressure ratios and maximum delivery pressures. The maximum air pressure for operation is generally 100 psi (7 bar) for models 2320, 2326, and 2353, and 200 psi (14 bar) for models 2368 and 2318.
- Model 2320:
- Airmotor: 86810
- Ratio: 20:1
- Maximum Delivery Pressure: 2000 psi (138 bar)
- Model 2326:
- Airmotor: 84808
- Ratio: 13:1
- Maximum Delivery Pressure: 1300 psi (90 bar)
- Model 2353:
- Airmotor: 84806
- Ratio: 7:1
- Maximum Delivery Pressure: 700 psi (48 bar)
- Model 2368:
- Airmotor: 84804
- Ratio: 3:1
- Maximum Delivery Pressure: 600 psi (41 bar)
- Model 2318:
- Airmotor: 84803
- Ratio: 1.5:1
- Maximum Delivery Pressure: 300 psi (21 bar)
Usage Features:
- Upright Installation: The pump should be installed upright for optimal operation. For bulk material dispensing, it is recommended to use a Model 83727 standpipe and locate the pump as close to the tank as possible, utilizing a minimum 3-inch (76mm) I.D. inlet hose or pipe.
- Priming: To initiate operation, the pump must be primed with the material to be pumped. This involves opening the output line (material valve) and slowly opening the air supply valve until all air is expelled from the lines and material fills the pump and lines. The pump should then stall against pressure when the output line is closed. If priming issues occur, the bleeder valve (Item 12) can be slightly opened to expel trapped air.
- Outlet Position Adjustment: The pump outlet's position can be adjusted by loosening three screws (Item 35) on the mounting flange, rotating the pumptube outlet to the desired orientation, and then retightening the screws to 25 ft/lbs.
- Gland Packing Design (U.S. Patent No. 4,976,192): This patented design addresses the challenges of pumping materials that dry out and build up, as well as high-pressure fluctuations.
- External Wiper: A special spring-type metal wiper (Item 5) scrapes built-up and dried material from the pump plunger before it enters the gland packing on the down stroke. To enhance the wiper's effectiveness, the lube well should be filled with a fluid compatible with the pumped material, but not to full capacity to prevent fluid from being drawn into the airmotor.
- Internal Protection Sleeve: An internal Protection Sleeve (Item 9) with concentric grooves creates a labyrinth path, reducing the impact of internal pressure and stroke change-over fluctuations on the gland seal.
- Second Internal Wiper: An additional internal wiper further limits the gland seal's exposure to the pumped material. This combination significantly extends gland seal life and prevents leakage.
- Safety Precautions:
- Adherence to maximum working pressure limits for both the pump and the lowest-rated system component is crucial.
- No alterations or modifications to any part of the equipment are permitted.
- The pump must not be operated with combustible gases or fuels (gasoline, diesel fuel, kerosene, etc.).
- Repairs or disassembly should only occur when the system is depressurized.
- All fluid connections must be securely tightened.
- Fluid manufacturer's recommendations for compatibility and protective clothing must be followed.
- Regular inspection and replacement of worn or damaged parts are mandatory.
- Safety devices must be in place and operating correctly before each use.
- Static Sparking Prevention: When handling inflammable fluids, the pump, dispensing valve, and containers must be grounded to prevent static sparking, which could lead to fire or explosion. Continuity checks with an ohmmeter are recommended.
- Fire Prevention: Adequate ventilation is required when pumping, flushing, or recirculating volatile solvents. Solvents should be kept away from heat, sparks, and open flames, and containers kept closed.
- Dry Operation Warning: The pump should not be allowed to operate when out of material.
- Speed Limit: Continuous operation at speeds exceeding 75 cycles per minute should be avoided.
Maintenance Features:
- Disassembly Procedure: A detailed step-by-step disassembly procedure is provided, outlining the tools required and the sequence for removing various components such as the mounting flange, priming rod, piston and plunger assembly, pump tube, bleeder valve, gland nut, bushing, sleeve, and wipers. This facilitates repair and replacement of internal parts.
- Reassembly: Reassembly is performed by reversing the disassembly procedure, with specific torque specifications provided for critical components like the bolt connector (100-120 Ft. Lbs.), piston nut (240-260 Ft. Lbs.), plunger nut (240-260 Ft. Lbs.), and hex cap screws (24-26 Ft. Lbs.).
- Wiper and U-Cup Installation: Specific instructions are given to install wipers (Item 5) and U-cups (Items 8, 18 & 29) in the correct direction, as shown in enlarged views in the manual.
- Service Kits: Various service kits are available for maintenance:
- Repair Kit (Polyurethane 241680): Contains all parts needed for a complete pumptube rebuild.
- Seal Kits (Polyurethane 84927, Teflon 84928, Polyethylene 84929): Polyurethane Seal Kit contains all soft seals. Teflon and Polyethylene Seal Kits contain gland and piston u-cups only.
- Gland Seal Kits (Polyurethane 85315, Teflon 85325, Polyethylene 85331): Contain gland u-cup and o-ring only.
- Flushing Before Use: Pumps are factory tested with light oil, and some residue remains for protection during storage. To prevent contamination of the pumped material, the pump should be flushed before use.
- Troubleshooting Guide: A comprehensive troubleshooting section helps diagnose common operational issues such as the pump not operating, erratic/accelerated operation, or failure to dispense material. It provides possible causes (e.g., restricted air supply, obstructed material output, worn seals, unprimed pump) and corresponding solutions (e.g., checking air supply, priming the pump, refilling material, checking/replacing seals).
- Lincoln Replacement Parts: It is recommended to use Lincoln replacement parts to ensure compatible pressure ratings and maintain equipment integrity.
The PILE DRIVER® III PUMP ASSEMBLY is a sophisticated and durable piece of equipment designed for demanding industrial material transfer tasks, with a strong emphasis on reliability, ease of maintenance, and operational safety.
Need help?
General
To Next Page