CH&E Generac Magnum MCP5515-3 Diaphragm Trash Pump & Repair Parts

The CH&E Generac Magnum MCP5515-3 diaphragm trash pump is a professional-grade self-priming diaphragm water pump built for contractors, municipal teams, and industrial operators who need dependable and consistent fluid transfer in the most challenging job site environments. This page covers the complete product overview, specifications, key features, applications, and repair parts information for the MCP5515-3 diaphragm water pump.

Ken’s Distributing Company is a specialist in CH&E and Generac Magnum diaphragm pump repair parts for the full MCP series range. If you need help identifying the correct repair parts for your MCP5515-3 or confirming compatibility with your specific pump configuration, the Kendisco team is ready to assist. Contact us at 303-699-7845 or submit a quote request online.

CH&E Generac Magnum MCP5515-3 Diaphragm Trash Pump: Product Overview

The CH&E Generac Magnum MCP5515-3 is a 3 inch diaphragm prime trash pump powered by a 1.5 HP TEFC three-phase electric motor. It delivers up to 65 gallons per minute through a 3 inch intake and discharge port with a maximum head of 50 feet, positioning it between the lower-flow MCP5437 electric model and the higher-output gas engine models in the MCP diaphragm pump range.

The MCP5515-3 is built on the CH&E 5500 Series aluminum diaphragm pump platform and shares its core design with other 3 inch models in the MCP series. The TEFC electric motor makes the MCP5515-3 the preferred choice for indoor facilities, pump stations, enclosed construction environments, and any application where electric power is available and gas engine exhaust emissions are not acceptable. Like all CH&E diaphragm pumps, the MCP5515-3 operates without an impeller shaft or mechanical seal, making it tolerant of sand, silt, and abrasive particles that would damage centrifugal pump components.

The pump runs dry indefinitely without internal damage and automatically re-primes when water returns to the suction inlet, making it well suited to intermittent seepage dewatering, facility sump management, and foundation drainage applications where unattended operation and automatic restart are required.

CH&E Generac Magnum MCP5515-3 Diaphragm Trash Pump: Key Specifications

CH&E Generac Magnum MCP5515-3 Diaphragm Trash Pump: Key Features

• 1.5 HP TEFC Three-Phase Electric Motor: Totally enclosed fan-cooled motor provides reliable, emission-free operation in indoor facilities, enclosed construction environments, and pump stations where gas engine exhaust is not permitted. Three-phase power ensures smooth, consistent motor performance under continuous pumping load
• 3 Inch Port for Higher Flow Capacity: The 3 inch (76.2mm) intake and discharge port delivers up to 65 GPM, making the MCP5515-3 a stronger flow performer than the 2 inch electric motor MCP5437 model while maintaining the clean electric motor operation suited to indoor and facility use
• Heavy-Duty Cast Aluminum Housing: Built for lifetime durability in demanding environments while keeping the pump lightweight and manageable for installation and repositioning
• No Impeller Shaft or Seal: Eliminates the primary failure point when pumping sand, silt, and abrasive water. No mechanical seal means no seal damage from dry running or abrasive particle exposure
• Automatic Self-Priming: Diaphragm prime system evacuates air from the pump casing and suction line automatically before each startup. No manual priming or pre-filling required
• Runs Dry Indefinitely: Continues operating without internal damage after the water source is depleted, then automatically re-primes and resumes pumping when water returns to the suction inlet
• Auto-Priming Intermittent Pumping: Designed for applications with intermittent flow requiring automatic pump restart without operator intervention, including facility sump management, seepage dewatering, and foundation drainage
• Self-Cleaning Water Flow: Internal flow path design reduces debris buildup and minimizes clogging during extended pumping in muddy and debris-laden water
• Low Maintenance Design: Electric motor eliminates engine oil changes, air filter service, spark plug replacement, and fuel system maintenance. Fewer critical wear components than centrifugal pump designs further reduces service requirements
• Skid Mount and Wheel Mount Options: Skid mount (S) for permanent or semi-permanent facility and pump station installations, wheel mount (W) for portable job site applications

MCP5515-3 vs. MCP5515-1: Understanding the Variant Difference

The MCP5515-3 and MCP5515-1 are variants within the MCP5515 diaphragm pump family. Both models share the same CH&E 5500 Series aluminum diaphragm pump platform and TEFC electric motor configuration. The key difference is port size and resulting flow capacity.

Contact the Kendisco team at 303-699-7845 with your unit serial number to confirm the exact port size, flow specification, and repair parts list for the MCP5515-1 and to identify which components are shared with the MCP5515-3.

MCP5515-3 vs. MCP5437: Comparing 3 Inch Electric Diaphragm Pump Models

The MCP5515-3 and MCP5437 are both TEFC three-phase electric motor diaphragm pumps in the CH&E Generac Magnum range. Both use the same 1.5 HP motor but differ in port size, flow output, and platform.

MCP5515-3 vs. Gas Engine Models: Electric vs. Gas Diaphragm Pumps

Repair Parts for the CH&E Generac Magnum MCP5515-3 Diaphragm Trash Pump

Ken’s Distributing Company stocks genuine repair parts for the CH&E Generac Magnum MCP5515-3 diaphragm trash pump. The MCP5515-3 is built on the CH&E 5500 Series aluminum diaphragm pump platform and shares core pump components with other 3 inch models in the MCP and CH&E 5500 Series range. Motor-specific components are unique to the electric motor configuration. Always use your unit serial number when ordering to confirm the correct part numbers for your specific MCP5515-3 build.

Commonly replaced repair parts for the MCP5515-3 diaphragm trash pump include:

• Diaphragm: Primary fluid-end wear component. Available in Neoprene, Buna-N, TPE, Rubber, and Viton. Choose the material that best matches your fluid type and operating conditions
• Flap Valve Assemblies: Two required per pump. Available in Neoprene, Buna-N, Neoprene with cloth insert, and Viton. Cloth insert Neoprene is recommended for high-cycle continuous operation and abrasive water conditions
• Diaphragm Rebuild Kit: Complete fluid-end kit including diaphragm, flapper assemblies, and all hardware for a full fluid-end rebuild in one order
• Connecting Rod and Bearing: Drivetrain components serviced during major pump rebuilds. Grease the connecting rod bearing at regular intervals through the grease fitting
• Lip Seals and Case Gasket: Replace at each major rebuild to prevent fluid ingress into the drivetrain housing
• Ball Bearings and Needle Bearing: Inspect and replace as part of complete drivetrain overhauls
• Crank Arm and Gear Set: Long-life drivetrain components replaced during full pump overhauls when wear is confirmed
• Suction Strainer: Inspect and clean before each use. Replace if cracked, blocked, or compromised
• Electric Motor and Motor Adapter: The 1.5 HP TEFC three-phase motor and motor adapter are specific to the MCP5515-3 electric configuration. Contact the Kendisco team to confirm motor-specific part availability for your unit

Diaphragm Material Selection for the MCP5515-3

Choosing the correct diaphragm material for the CH&E Generac Magnum MCP5515-3 diaphragm trash pump is critical for maximizing service life and maintaining reliable pump performance across your specific application and fluid type.

Flap Valve Selection for the MCP5515-3

Each CH&E Generac Magnum MCP5515-3 diaphragm trash pump requires two flap valve assemblies. Selecting the correct valve material ensures reliable valve seating and maximizes the interval between replacements for your specific application.

• Neoprene: Best for general dewatering, facility drainage, construction, and moderate chemical exposure. The standard choice for most MCP5515-3 applications
• Buna-N: Recommended for petroleum-based fluid transfer and light chemical contact in industrial facility applications
• Neoprene with Cloth Insert: Recommended for high-cycle continuous operation, abrasive slurry conditions, and any application where extended valve service life between replacements is a priority
• Viton: For aggressive chemical environments, solvent transfer, and high-temperature industrial fluid applications

Maintenance Guidance for the CH&E Generac Magnum MCP5515-3 Diaphragm Trash Pump

The TEFC electric motor configuration of the MCP5515-3 eliminates all engine-related maintenance tasks, significantly reducing the total service burden compared to gas engine diaphragm pump models. Regular inspection and replacement of fluid-end wear components remains essential for sustained pump performance.

• Diaphragm inspection: Inspect every 250 operating hours. Replace at the first sign of cracking, stiffness, deformation, or reduced output. In abrasive water conditions or continuous high-cycle operation, inspect more frequently
• Flap valve inspection: Check valve condition and seating quality at each diaphragm inspection interval. Replace valves showing wear, tearing, or failure to seat correctly
• Suction strainer: Inspect and clean before each use. Replace immediately if cracked, deformed, or blocked
• Connecting rod bearing: Grease through the grease fitting at regular service intervals to prevent dry bearing wear
• Case gasket and lip seals: Replace at each major rebuild to maintain a sealed and leak-free drivetrain housing
• TEFC electric motor: Inspect motor connections and terminal block for corrosion or loose wiring periodically. Confirm motor cooling vents remain clear of debris to maintain airflow across the motor housing. Check motor insulation resistance annually in wet or chemically exposed environments

How Often Should I Rebuild the MCP5515-3 Diaphragm Trash Pump?

Under normal operating conditions, plan for a full fluid-end rebuild every 500 to 750 operating hours, or at the first sign of reduced pump output, weakened auto-priming performance, or visible diaphragm wear. For MCP5515-3 pumps running in continuous facility sump or municipal pump station applications, monitor diaphragm condition at regular intervals and replace at the first signs of surface cracking or reduced flexibility. Replacing all fluid-end wear components together at each rebuild reduces the risk of a follow-on component failure after service.

Common Service Questions for the CH&E Generac Magnum MCP5515-3 Diaphragm Trash Pump

What is the flow rate difference between the MCP5515-3 and the MCP5515-1?

The MCP5515-3 delivers 65 GPM (246 Lpm) through its 3 inch port. The MCP5515-1 is a variant within the same MCP5515 family. Contact the Kendisco team at 303-699-7845 with your unit serial number to confirm the exact port size, flow specification, and repair parts for the MCP5515-1 and to identify which components are shared between the two variants.

Can the MCP5515-3 operate in indoor environments?

Yes. The 1.5 HP TEFC three-phase electric motor of the MCP5515-3 produces no exhaust emissions, making it fully suitable for indoor facilities, enclosed pump stations, underground structures, and any environment where gas engine exhaust would be a health, safety, or regulatory concern. Ensure adequate ventilation is maintained in the work area and that all electrical installations meet applicable codes and safety standards for the environment.

Does the MCP5515-3 require three-phase electrical power?

Yes. The MCP5515-3 uses a 1.5 HP TEFC three-phase electric motor that requires a three-phase electrical supply to operate correctly. It cannot be run directly on a single-phase supply without a phase converter or motor modification. If your facility has single-phase power only, contact the Kendisco team at 303-699-7845 to discuss alternative pump configuration options for your application.

How does the MCP5515-3 handle sandy and muddy water?

The MCP5515-3 diaphragm design operates without an impeller shaft or mechanical seal exposed to the fluid stream. Sand, silt, and abrasive particles pass through the pump without contacting the critical components that would experience rapid wear in a centrifugal pump under the same conditions. The cast aluminum housing and diaphragm mechanism provide reliable performance in muddy, sandy, and debris-laden water conditions that would shorten the service life of a centrifugal pump significantly.

What repair parts are shared between the MCP5515-3 and MCP5515-1?

Both the MCP5515-3 and MCP5515-1 are built on the CH&E 5500 Series aluminum diaphragm pump platform and are expected to share most core pump components. Specific shared and variant-specific parts should be confirmed using your unit serial number before ordering. Contact the Kendisco team at 303-699-7845 for precise parts identification for both models.

Where can I order MCP5515-3 diaphragm pump repair parts?

Ken’s Distributing Company is a specialist in CH&E Generac Magnum diaphragm pump repair parts for the complete MCP series range, including both electric motor and gas engine configurations. Kendisco stocks diaphragm kits, complete rebuild kits, flap valve assemblies, seals, bearings, and all platform components for the MCP5515-3. Contact the Kendisco team at 303-699-7845 with your unit serial number for fast and accurate parts identification and availability confirmation. You can also reach out online to submit a quote request.

Industries and Applications for the CH&E Generac Magnum MCP5515-3 Diaphragm Trash Pump

The CH&E Generac Magnum MCP5515-3 diaphragm trash pump is particularly well suited to facilities and applications where electric power is available, higher 3 inch flow capacity is needed, and the emission-free operation of a TEFC electric motor is an advantage or a requirement.

• Industrial Facility Drainage: Removes process water, wash-down water, and facility floor drainage in manufacturing plants, warehouses, and industrial facilities equipped with three-phase electrical supply
• Municipal Pump Stations: Supports bypass pumping, sump management, wet well dewatering, and infrastructure maintenance in municipal water and wastewater facilities where electric motor operation is standard
• Construction and Foundation Dewatering: Manages seepage and groundwater removal in enclosed or semi-enclosed construction environments such as underground structures, parking garage excavations, and tunnel projects where gas engine exhaust is not permitted
• Pond and Ditch Dewatering: Pumps shallow and muddy water from ponds, drainage ditches, and retention areas at facilities with accessible three-phase electrical infrastructure
• Mining and Quarrying Facilities: Manages drainage in mine processing plants and quarry facilities equipped with three-phase electrical power
• Agriculture and Irrigation Facilities: Transfers water from ponds and open sources at agricultural pump houses and irrigation facilities with three-phase power available
• Marine and Port Facilities: Removes dock drainage, bilge water, and facility water in marine environments where electric motor operation is preferred for reliability, noise reduction, and emission compliance

Order CH&E Generac Magnum MCP5515-3 Diaphragm Trash Pump Parts from Kendisco

Ken’s Distributing Company is a trusted repair parts specialist for the CH&E Generac Magnum MCP5515-3 diaphragm trash pump and the complete MCP and CH&E diaphragm pump series. Whether you need a diaphragm kit, complete rebuild kit, flap valve assemblies, seals, bearings, motor components, or any other part for your MCP5515-3, the Kendisco team has the inventory and technical expertise to support your service needs.

Call Ken’s Distributing Company at 303-699-7845, submit a quote request online, or contact us by email with your unit serial number for fast and accurate parts identification. Getting your CH&E Generac Magnum MCP5515-3 diaphragm trash pump back in service starts here.