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Marine Watermaker Manuals & Installation Guides

Access official FCI Watermakers user manuals, installation guides, maintenance documentation, and troubleshooting resources for Atlas+, Neptune+, Max•Q+, Aqualite, Aquamiser+, DTS, and watermaker accessories. Whether you’re commissioning a new system, performing routine maintenance, or diagnosing an operational issue, this resource center provides the technical documentation you need to keep your watermaker performing at its best.

Browse by product family below or use the search function to quickly locate the appropriate manual.

Atlas+ Watermaker Manuals

Atlas+ watermakers are engineered to deliver reliable freshwater production for recreational and commercial marine applications. Browse official manuals for modular, framed, and APC/DTS configurations to find installation instructions, operating procedures, maintenance schedules, troubleshooting guidance, and warranty information.

Atlas+ Modular System

Designed for modular reverse osmosis watermaker installations, this manual provides complete instructions for installation, startup, operation, preventive maintenance, troubleshooting, wiring references, and warranty coverage.

Atlas+ Framed Direct-Drive

Access the complete installation and maintenance guide for Atlas+ Framed Direct-Drive systems. Learn proper setup procedures, operating recommendations, servicing intervals, troubleshooting techniques, and safety information.

Atlas+ APC | DTS Modular Direct-Drive

This manual covers Atlas+ APC Double Pass systems equipped with Automated Pressure Control (APC) and Dockside Treatment System (DTS) technology. It includes installation procedures, touchscreen controls, diagnostics, preventive maintenance, and system operation.

Neptune+ Watermaker Manuals

Neptune+ systems are designed to provide dependable freshwater production in demanding marine environments. Explore official manuals covering horizontal, vertical, modular, and offshore configurations, complete with installation guidance, operating instructions, maintenance procedures, and troubleshooting support.

Neptune+ Horizontal Direct-Drive

Find detailed installation instructions, operating procedures, routine maintenance recommendations, and troubleshooting information for Neptune+ Horizontal Direct-Drive systems.

Neptune+ Vertical Direct-Drive

This manual includes complete installation procedures, operating instructions, maintenance schedules, diagnostics, and safety recommendations for Neptune+ Vertical Direct-Drive systems.

Neptune+ Modular Direct-Drive

Reference documentation covering Neptune+ Modular Direct-Drive systems, including commissioning, operation, preventive maintenance, diagnostics, and replacement component guidance.

Neptune+ OG Horizontal Framed

Designed for offshore and oil & gas platform applications, this manual provides installation guidance, operating procedures, maintenance recommendations, and troubleshooting information for Neptune+ OG systems.

Max•Q+ Watermaker Manuals

Max•Q+ watermakers combine advanced automation with dependable freshwater production. Browse manuals for modular, framed, and APC/DTS models to support installation, maintenance, system optimization, and long-term performance.

Max•Q+ Modular System

Installation and operation guide covering startup procedures, routine maintenance, diagnostics, troubleshooting, and recommended servicing practices.

Max•Q+ Framed System

Comprehensive documentation covering installation, operation, preventive maintenance, troubleshooting, warranty information, and system servicing.

Max•Q+ APC | DTS Modular Direct-Drive

Technical documentation for modular APC Double Pass systems featuring touchscreen controls, automated pressure control, diagnostics, maintenance schedules, and operating instructions.

Max•Q+ APC | DTS Framed Direct-Drive

Complete installation and operation manual for framed APC Double Pass systems with detailed servicing procedures, diagnostics, troubleshooting, and warranty information.

Aqualite Watermaker Manuals

Aqualite watermakers are designed to deliver efficient freshwater production while maximizing reliability and ease of maintenance. Access official manuals covering installation, operation, routine maintenance, diagnostics, and troubleshooting.

Aqualite Modular System

Official installation, operation, maintenance, and troubleshooting guide for Aqualite Modular reverse osmosis watermaker systems.

Aqualite Framed System

Complete user manual covering installation requirements, startup procedures, routine maintenance, diagnostics, servicing recommendations, and warranty information.

Aquamiser+ Watermaker Manuals

Aquamiser+ systems are engineered for dependable freshwater production with simplified maintenance and long-term reliability. Browse official manuals for both modular and framed configurations.

Aquamiser+ Modular System

Technical guide covering installation, operation, maintenance, troubleshooting, and warranty information for Aquamiser+ Modular systems.

Aquamiser+ Framed System

Installation and maintenance manual featuring startup procedures, diagnostics, routine servicing, and preventive maintenance recommendations.

Dockside Treatment System (DTS) Manuals

Dockside Treatment Systems help protect your watermaker while producing high-quality freshwater from municipal dock water. Browse manuals for stationary, portable, and standalone DTS solutions, including operation, maintenance, and servicing information.

DTS+ Series

Complete installation and operating guide for the Dockside Treatment System Plus Series, covering filtration, startup procedures, routine maintenance, and troubleshooting.

DTS+ Mobile

Portable Dockside Treatment System manual covering installation, operation, maintenance, diagnostics, transport recommendations, and servicing information.

DTS+ SOLO

Standalone Dockside Treatment System manual covering installation, municipal water purification, touchscreen operation, filter replacement, diagnostics, and routine maintenance.

Watermaker Accessories & Filter Manuals

Maintain your watermaker with official accessory documentation and installation resources. These manuals include setup instructions, maintenance procedures, and replacement recommendations to help ensure optimal system performance.

Multimedia Filter Accessory

Installation and maintenance guide for the Multimedia Filter Accessory, including filter servicing, replacement procedures, inspection recommendations, and operational best practices.

Need Technical Support?

Can’t find the manual you’re looking for or need assistance diagnosing a system issue? The FCS Marine team is here to help. Our experienced technicians provide professional support for installation, maintenance, repairs, replacement parts, and troubleshooting across the complete range of FCI Watermakers systems.

Whether you need help commissioning a new system, scheduling maintenance, identifying replacement parts, or resolving an operational issue, we’re committed to keeping your watermaker performing reliably wherever your journey takes you.

Why Choose FCS Marine?

  • Factory-trained technical support
  • Authorized service and repair assistance
  • Genuine FCI Watermakers replacement parts
  • Professional installation guidance
  • Expert troubleshooting for marine reverse osmosis systems
  • Responsive customer support for yacht owners, captains, and marine professionals
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