Grundfos 98125924, CM5-I Series, Model CM 5-7

Product Overview

A pump failure during the height of the growing season or a peak cooling period is a direct threat to your client's operations and your reputation. When a multistage pump fails, it leads to immediate system shutdowns, potential crop loss in nursery settings, and costly emergency service calls that pull your crews away from scheduled projects. With global supply chains still experiencing volatility and extended lead times for high-spec rotating equipment, waiting for a breakdown to occur is a high-risk strategy. Ordering your Grundfos inventory today ensures that you are the contractor who can restore service immediately while others are waiting on factory shipments. Planning your pump replacements now protects your schedule and keeps your clients operational when the heat is on.

The Grundfos CM5-7 offers a distinct technical advantage over standard centrifugal pumps through its compact horizontal multistage design and industrial-grade construction. This model features stainless steel internal components that resist corrosion and wear far better than cast iron alternatives; this reduces long term maintenance costs and extends the service life of the system. The quiet operation and high efficiency of the CM series mean lower energy bills for your clients and fewer noise complaints in residential or commercial settings. By stocking these units, you position your business as a premium provider that prioritizes reliability and lower total cost of ownership for every install.

Product Specifications

Available Models & Sizes

The Grundfos CM series is available in several flow configurations including CM1, CM3, CM5, and CM10 models with varying stage counts to meet specific pressure requirements. This CM 5-7 model represents a mid-range flow capacity with seven impellers for high-head applications. Please contact our sales team for full configuration options regarding voltage, phase, and specialized seal materials for chemical compatibility.

Key Features

• High grade stainless steel construction ensures maximum durability in demanding water conditions.
• Multistage design provides high pressure output while maintaining a compact footprint for tight mechanical rooms.
• Equipped with a mechanical shaft seal designed to prevent leaks and reduce frequent servicing requirements.
• Internal hydraulics are optimized for quiet operation; making it ideal for indoor installations.
• Directly compatible with generic VFD controllers for precise flow management and energy savings.
• Modular design allows for easy access to internal components if service or seal replacement is required.

Common Applications

• Commercial landscape irrigation
• Agricultural and crop irrigation
• Municipal parks and public spaces
• Greenhouse and nursery operations
• Potable water supply systems
• Pool, spa, and water feature plumbing

Installation Notes

Installation of the Grundfos CM 5-7 requires a solid, level foundation to prevent vibration and ensure long term alignment of the motor and pump shaft. Professionals should use appropriately sized inlet and outlet piping to minimize friction loss and prevent cavitation. All electrical connections must be performed by a qualified technician in compliance with local electrical codes and manufacturer wiring diagrams. It is recommended to install a foot valve if the pump is positioned in a suction lift application; however, flooded suction is preferred for optimal performance. Ensure the system is fully primed before startup to prevent dry running and damage to the mechanical seal.