Champion Cooler Purge Pump Kit for MasterCool MCP44/MCP44E — Electronic, Water‑Saving Scale Control

The MasterCool Purge Pump Kit is a compact, electronic purge pump assembly that removes small amounts of reservoir water to reduce mineral buildup and keep evaporative media pads working efficiently.

This kit is designed as an aftermarket accessory for specific MasterCool evaporative coolers, integrating with the unit's MCP44 control system to perform periodic purges. Compared with traditional bleed-off methods, the purge pump uses far less water while helping slow scale accumulation inside the reservoir and on media pads. The package includes the pump, mounting bracket, hose kit, a bracket screw and clear installation instructions tailored for compatible MasterCool models.

How does the purge pump prevent mineral deposits?

The pump periodically expels a measured amount of water from the cooler reservoir to remove dissolved minerals before they concentrate and form scale. Because purges are timed and electronic, the system reduces mineral retention without continuous runoff.

• Works with MCP44/MCP44E/WPL44/WPL44NP control timing to trigger purges
• Removes concentrated water instead of letting minerals settle on pads
• Helps maintain cleaner media pads so airflow and cooling stay consistent

Will this kit fit my evaporative cooler?

The MasterCool Purge Pump Kit is compatible only with MasterCool models MCP44, MCP44E, WPL44 and WPL44NP. It’s made to integrate directly with those electronic controls so installation is straightforward when used with the listed units.

• Includes pump bracket and screw for secure mounting
• Hose kit sized for direct connection to the cooler reservoir drain point
• Not compatible with non-listed MasterCool models or other brands

How difficult is installation and what’s included?

Installation is intended to be DIY-friendly for someone comfortable with basic tools and following the printed instructions. The kit bundles the mechanical parts needed so you don’t have to source additional components.

• Pump assembly that connects to the MCP44 control output
• Mounting bracket and a single screw for secure placement
• Hose kit cut to fit reservoir routing plus an instruction sheet

How does the purge pump compare with bleed-off systems?

Unlike continuous bleed-off systems that constantly discharge water, the purge pump delivers controlled, intermittent purges. This conserves water while still reducing mineral concentration, making it a more water-efficient approach to scale management.

• Uses electronic timing rather than continuous discharge
• Consumes significantly less water than typical bleed-off setups
• Targets the reservoir to protect media pad life and system efficiency

Who is this for: The MasterCool Purge Pump Kit is intended for owners of MasterCool MCP44, MCP44E, WPL44 and WPL44NP evaporative coolers who want a water-efficient way to manage mineral buildup and extend media pad life. It’s appropriate for facility maintenance teams, home users with compatible units, and anyone looking to reduce routine scale maintenance without modifying the cooler control system.