Waterco T500G Manual: A Comprehensive Guide
This manual delivers a complete guide to the Waterco T500G filter, covering installation, operation, maintenance, troubleshooting, and compatibility with Waterco’s product range.
The Waterco T500G is a robust and reliable fiberglass filter designed for efficient water filtration in a variety of applications, including swimming pools and aquaculture systems. This manual serves as a comprehensive resource for owners and technicians, providing detailed instructions on installation, operation, and maintenance to ensure optimal performance and longevity. Waterco has established itself as a leading international manufacturer of water treatment solutions, and the T500G exemplifies their commitment to quality and innovation.
Understanding the T500G’s features and proper procedures is crucial for maintaining clean and safe water. This guide will walk you through each step, from initial setup to troubleshooting common issues, helping you maximize the benefits of your Waterco filtration system. Waterco’s expertise extends to purification, ensuring a superior filtration experience.
Understanding the T500G’s Applications
The Waterco T500G excels in diverse water filtration scenarios, primarily serving residential and commercial swimming pools, spas, and aquaculture installations. Its robust fiberglass construction and efficient design make it suitable for both new installations and retrofits, offering a reliable solution for maintaining water clarity and hygiene. Beyond recreational use, the T500G is also applicable in industrial water treatment processes where consistent filtration is paramount.
Waterco’s commitment to versatile solutions means the T500G can handle varying water volumes and contaminant levels. Its compatibility with Waterco pumps and chlorinators further expands its utility, creating a complete water care system. Whether it’s a public swimming pool or a private aquaculture farm, the T500G delivers consistent, high-quality filtration.

Key Components and Their Functions
The T500G features a fiberglass tank, multiport valve, integrated pump connection, and a crucial pressure gauge – each component working harmoniously for optimal filtration.
Filter Tank Construction (Fiberglass)
Waterco’s Micron fiberglass filters are increasingly favored over traditional steel tanks due to their significant advantages in construction and performance. The T500G utilizes a seamless, one-piece fiberglass vessel, eliminating the corrosion issues common in steel tanks.
This innovative design provides exceptional mechanical and chemical resistance, ensuring longevity and reliability. Fiberglass is also lightweight, simplifying installation and handling. The smooth, non-corrosive surface minimizes maintenance requirements, offering a cost-effective and durable filtration solution.
Compared to steel, fiberglass doesn’t require painting or special coatings to prevent rust, further reducing long-term ownership costs. This robust construction ensures the T500G can withstand demanding pool environments and deliver consistent performance for years to come.
Multiport Valve Operation
The Waterco T500G features a robust multiport valve, central to its operational flexibility. This valve allows users to easily switch between various filter functions without interrupting the water flow. Key positions include Filter, Backwash, Rinse, Waste, Recirculate, and Closed.
Cleansing the filter is simplified by turning the multiport lever from the Filter position to Backwash, reversing the water flow to expel trapped debris. Rinse then resettles the filter media. The Waste position bypasses the filter for quick draining, while Recirculate allows water circulation without filtration.
Understanding each position is crucial for optimal performance and maintenance. Always ensure the pump is off before changing lever positions to prevent damage. Regular inspection and proper operation of the multiport valve are essential for extending the life of your T500G filter.
Pump Integration with the T500G
Proper pump integration is vital for the efficient operation of the Waterco T500G filter system. Waterco offers compatible pumps, including the Supastream and High Performance series, designed to work seamlessly with the T500G, ensuring optimal flow rates and filtration.
The pump’s role is to draw water from the pool, push it through the filter, and return the cleaned water back to the pool. Correct pump sizing is crucial; an undersized pump will result in inadequate filtration, while an oversized pump can damage the filter.
Ensure the pump is properly plumbed to the filter’s inlet and outlet. Regular pump maintenance, including impeller cleaning and seal checks, is essential for consistent performance and longevity of the entire system.
Pressure Gauge and its Significance
The pressure gauge on the Waterco T500G is a critical component for monitoring filter performance and identifying potential issues. It displays the pressure differential across the filter media, indicating the level of debris accumulation.
A normal operating pressure will vary depending on the flow rate and filter condition. A rising pressure reading signifies that the filter media is becoming clogged and requires backwashing. Ignoring a high-pressure reading can lead to damage to the filter tank or other components.
Conversely, a consistently low-pressure reading might indicate a leak in the system or a malfunctioning pump. Regularly checking the pressure gauge allows for proactive maintenance and ensures optimal filtration efficiency.

Installation Procedures
Proper installation involves careful setup, secure plumbing connections, and safe electrical connections, ensuring optimal performance and longevity of your Waterco T500G filter system.
Initial Setup and Positioning
Before commencing installation, carefully select a level, stable surface capable of supporting the T500G’s weight, including water. Ensure adequate space around the filter for maintenance access and plumbing connections.
Position the filter as close as possible to the pump and other pool equipment to minimize plumbing runs and potential pressure loss. Consider weather protection; while the fiberglass tank is durable, prolonged exposure to direct sunlight and freezing temperatures should be avoided.
Verify that all nearby electrical connections are properly grounded and protected from water. A concrete pad is recommended for optimal stability and to prevent settling. Double-check the area for any obstructions before finalizing the filter’s position.
Plumbing Connections
Prior to making plumbing connections, ensure all pipework is clean and free of debris. Use appropriate PVC cement and primer for all connections, following the manufacturer’s instructions carefully. The inlet and outlet ports are clearly marked; connect the pump outlet to the filter’s inlet and the filter’s outlet to the return line.
Employ flexible connectors to minimize stress on the plumbing and filter tank due to vibration or expansion/contraction. Utilize a union fitting on the inlet side for easy filter removal during servicing.
Thoroughly inspect all connections for leaks after pressurizing the system. Proper sealing is crucial to prevent water loss and maintain efficient filtration.
Electrical Connections (Safety First!)
Electrical work must be performed by a qualified electrician and comply with all local and national electrical codes. Before commencing any electrical connection, always disconnect power to the circuit at the breaker. Ensure the pump’s voltage matches the supply voltage;
Proper grounding is essential for safety; connect the grounding wire to a designated grounding point. Use weatherproof electrical enclosures and conduit for all outdoor connections.
Double-check all wiring connections before restoring power. Never operate the pump if the electrical connections are damaged or compromised. Water and electricity are a dangerous combination – prioritize safety at all times.

Operation and Maintenance
Regular maintenance, including normal filtration, backwashing, and winterizing, ensures optimal performance and extends the lifespan of your Waterco T500G filter.
Normal Filtration Mode
During normal filtration, the multiport valve should be positioned to the “Filter” setting. This allows water to flow through the filter media, effectively removing debris and impurities, and returning clean, clear water back to the pool.
Ensure the pump is operating at its recommended flow rate for optimal filtration efficiency. Regularly monitor the pressure gauge; a steady reading indicates normal operation. A gradual increase in pressure suggests the filter media is becoming clogged and requires backwashing.
Consistent filtration is crucial for maintaining water quality and hygiene. Avoid operating the pump with the multiport valve in any other position during normal use, as this could damage the filter or compromise water cleanliness.
Backwashing Procedure
When the pressure gauge indicates a 8-10 psi rise above the clean starting pressure, it’s time to backwash. First, turn off the pump. Then, rotate the multiport valve to the “Backwash” position. Ensure the waste line is properly directed before proceeding.
Restart the pump and allow it to run for 2-3 minutes, or until the water in the sight glass runs clear. This reverses the water flow, flushing out accumulated dirt and debris from the filter media.
Turn off the pump again, and return the multiport valve to the “Filter” position. Briefly run the pump to rinse the filter before resuming normal operation. Regular backwashing maintains optimal filter performance.
Filter Cleaning – Multiport Lever Positions

The Waterco T500G’s multiport valve offers several positions for comprehensive filter maintenance. “Filter” is for normal operation. “Backwash” reverses flow to clean the media, as previously described. “Rinse” follows backwash, resettling the media before filtering.
“Waste” bypasses the filter, directly sending water to the drain – useful for vacuuming debris or lowering water levels. “Recirculate” bypasses the filter entirely, circulating water for chemical distribution.
“Closed” isolates all ports, preventing water flow. Always turn off the pump before changing lever positions. Proper use of these positions ensures efficient cleaning and extends the filter’s lifespan.
Winterizing the T500G
Proper winterization protects your Waterco T500G from freeze damage. First, thoroughly backwash the filter. Then, remove the drain plug and allow all water to drain from the tank and piping. Inspect and clean the multiport valve, lubricating O-rings with a silicone-based lubricant.

Remove any cartridges or sand, storing them in a clean, dry place. Blow out the remaining water in the lines using an air compressor. Plug all openings to prevent debris and moisture entry.
Consider a winterizing chemical to further protect the system. Remember to consult local climate guidelines for optimal protection during colder months.

Troubleshooting Common Issues
This section details solutions for low flow, high pressure, multiport valve malfunctions, and pump problems, ensuring efficient Waterco T500G operation and longevity.
Low Water Flow Problems
Reduced water flow with your Waterco T500G can stem from several sources, requiring systematic investigation. First, verify the pump is functioning correctly and achieving adequate pressure.
Check for obstructions in the skimmer basket, pump strainer basket, and within the filter itself. A clogged impeller in the pump is a common culprit, necessitating inspection and cleaning.
Inspect all plumbing lines for kinks or blockages, and ensure all valves are fully open. A partially closed valve significantly restricts flow. Furthermore, a dirty or clogged filter cartridge or sand bed will dramatically reduce water circulation.
Backwashing the filter (for sand or DE models) or cleaning/replacing the cartridge (for cartridge filters) is often the solution.
High Pressure Readings
Elevated pressure on the Waterco T500G’s pressure gauge typically indicates a restriction within the filtration system. The most frequent cause is a dirty filter – a clogged cartridge, DE grid, or sand bed.
Immediately backwash the filter (sand or DE) or clean/replace the cartridge to restore normal flow and pressure. Inspect the pump strainer basket and skimmer basket for debris, as these can contribute to increased resistance.
Verify that all valves are fully open and that there are no kinks or obstructions in the plumbing lines. A closed or partially closed valve will cause a pressure buildup.
If the pressure remains high after these checks, inspect the impeller for damage or blockage.
Multiport Valve Issues
Problems with the Waterco T500G’s multiport valve often manifest as difficulty switching positions, leaking around the valve stem, or improper water flow during different cycles.
Ensure the pump is OFF before changing positions. If the valve is difficult to turn, lubricate the stem O-ring with a silicone-based lubricant. Inspect the O-ring for wear and replace if necessary.
Leaks around the valve stem usually indicate a worn or damaged O-ring, requiring replacement. Verify that the valve handle is securely tightened.
Improper flow suggests internal valve damage or debris obstructing the ports; a valve rebuild or replacement may be needed.
Pump Related Problems
If the pump isn’t priming, check for air leaks in the suction line, a clogged pump basket, or a low water level. Ensure the pump lid O-ring is clean and properly sealed.
Excessive pump noise can indicate a cavitation issue – often caused by insufficient water flow or a blocked suction line. Inspect the impeller for damage or obstructions.
Reduced pump performance might stem from a partially blocked impeller, a worn motor, or voltage issues. Verify the voltage supply matches the pump’s requirements.
A tripped circuit breaker suggests an electrical fault; consult a qualified electrician. Regular pump maintenance, including impeller cleaning, is crucial.

Waterco Product Range & Compatibility
Waterco offers compatible chlorinators, chemical feeders, and Micron fiberglass filters, alongside Supastream and High Performance pumps for optimal pool water care.
Waterco Chlorinators and Chemical Feeders
Waterco provides a diverse selection of chlorinators, chemical feeders, and controllers meticulously engineered to maintain pristine pool water quality. These systems cater to a wide spectrum of needs, ranging from sophisticated, intelligent water care solutions to user-friendly automatic tablet feeders.
Whether you require precise chemical dosing or a simple set-and-forget approach, Waterco has a product to suit your specific requirements. Their chlorinators ensure consistent sanitization, eliminating harmful bacteria and algae. Complementing these are chemical feeders designed for accurate and controlled release of essential pool chemicals, optimizing water balance and clarity.
Waterco’s commitment to innovation ensures these products are not only effective but also contribute to a healthier and more enjoyable swimming experience. Integrating these with the T500G filter creates a comprehensive water management system.
Waterco Micron Fiberglass Filters
Waterco’s Micron fiberglass filters are rapidly becoming the preferred choice over traditional steel tank filters due to their numerous advantages. These filters boast a lightweight yet incredibly durable construction, significantly reducing maintenance requirements for pool owners.
The seamless, one-piece molded design of the fiberglass vessels eliminates the risk of corrosion and leaks commonly associated with steel tanks. Furthermore, fiberglass exhibits superior mechanical and chemical resistance, ensuring longevity and reliability even in harsh environments. This robust construction translates to a longer lifespan and reduced replacement costs.
The T500G utilizes this advanced fiberglass technology, offering exceptional filtration performance and durability. Choosing a Waterco Micron filter means investing in a superior filtration system designed for years of trouble-free operation.
Waterco Pool Pump Compatibility (Supastream, High Performance)
The Waterco T500G filter is engineered for optimal performance when paired with Waterco’s range of high-quality pool pumps, specifically the Supastream and High Performance series; These pumps are designed to deliver the necessary flow rate and pressure for efficient filtration, maximizing the T500G’s capabilities.
Supastream pumps offer energy-efficient operation and quiet performance, while the High Performance series provides increased power for larger pools or demanding filtration needs. Selecting a compatible Waterco pump ensures a balanced system, preventing strain on the filter and pump components.
Proper pump sizing is crucial; consult the pump’s performance curve and the T500G’s flow rate specifications to achieve the best results. Waterco’s integrated systems guarantee reliability and longevity.

Spare Parts and Replacements
Genuine Waterco spare parts – including cartridge, DE, and sand filter spares, plus replacement cartridges – ensure optimal T500G performance and longevity.
Cartridge Filter Spares
Maintaining your Waterco T500G cartridge filter requires readily available spare parts for peak efficiency. Waterco provides a comprehensive selection of cartridge filter spares designed specifically for compatibility and optimal performance. These include replacement filter cartridges, manifold assemblies, and various seals and O-rings crucial for preventing leaks and maintaining water pressure.
Regular inspection and replacement of these components are essential for ensuring consistently clean and clear pool water. Utilizing genuine Waterco spares guarantees a perfect fit and upholds the filter’s original performance standards. Accessing these spares is streamlined through Waterco’s extensive distribution network, ensuring minimal downtime for your pool’s filtration system. Prioritize genuine parts for lasting reliability and water quality.
Sand Filter Spares
While the Waterco T500G is primarily a fiberglass filter often utilizing cartridges, understanding sand filter spares is valuable for Waterco’s broader product range compatibility. Waterco offers a complete inventory of sand filter spares, including lateral assemblies, sand distribution systems, and multiport valve components. These parts are essential for maintaining the efficiency and longevity of traditional sand filtration systems.
Regular maintenance and timely replacement of these spares prevent issues like channeling and reduced filtration effectiveness. Genuine Waterco sand filter spares ensure optimal performance and compatibility with other Waterco equipment. Accessing these parts through authorized dealers guarantees quality and proper fit. Proper maintenance extends the lifespan of your filtration system and maintains pristine water quality.
Replacement Cartridges
For the Waterco T500G, utilizing genuine Waterco replacement cartridges is crucial for maintaining optimal filtration performance. These cartridges are designed specifically for the T500G’s fiberglass filter tank, ensuring a precise fit and efficient water purification. Regular cartridge replacement, based on usage and water conditions, is essential to prevent reduced flow rates and compromised water quality.
Waterco offers a range of cartridge options to suit different needs, including varying micron ratings for finer filtration. Sourcing replacements from authorized Waterco dealers guarantees authenticity and quality. Proper cartridge installation and disposal are vital for maintaining a hygienic and effective filtration system. Consistent use of genuine cartridges maximizes the T500G’s lifespan and efficiency.

Waterco Company Information
Waterco, listed on the ASX since 1989, is a global leader specializing in pools, aquaculture, and water purification solutions, prioritizing efficiency.
Waterco’s History and ASX Listing
Waterco’s journey began with a commitment to innovation in the water treatment industry. Established as a pioneering force, the company quickly gained recognition for its dedication to quality and customer satisfaction. A pivotal moment in Waterco’s history arrived in 1989 with its listing on the Australian Securities Exchange (ASX) under the ticker symbol WAT.
This ASX listing marked a significant milestone, providing Waterco with the resources to expand its operations, invest in research and development, and broaden its global reach. Over the decades, Waterco has evolved into a technological and manufacturing powerhouse, consistently delivering cutting-edge solutions for swimming pools, aquaculture, and water purification.
The company’s commitment to sustainability and efficiency has further solidified its position as a leader in the industry, driving continuous improvement and responsible practices.
Waterco’s Expertise (Pools, Aquaculture, Purification)
Waterco’s extensive expertise encompasses a diverse range of water treatment applications, notably in swimming pools and spas. They provide comprehensive solutions, from filtration and sanitation systems to pumps and accessories, ensuring pristine water quality and enhanced recreational experiences. Beyond leisure, Waterco is a significant player in aquaculture, offering specialized equipment for fish farming and aquatic environments.
Their systems support optimal water conditions for healthy aquatic life, contributing to sustainable food production. Furthermore, Waterco excels in water purification, delivering advanced technologies for industrial and commercial applications.
These solutions address critical needs in various sectors, providing clean and safe water for diverse purposes, demonstrating Waterco’s broad capabilities and commitment to innovation.
Waterco’s Commitment to Efficiency
Waterco demonstrates a strong commitment to developing products that are both energy and water efficient, recognizing the growing importance of sustainable practices. This dedication is reflected in their innovative designs and manufacturing processes, aimed at minimizing environmental impact. They continually strive to reduce energy consumption in their equipment, such as the T500G filter and Supastream pumps, offering long-term cost savings for consumers.
Waterco also focuses on creating products that are easier to maintain, reducing the need for frequent repairs and replacements.
Listed on the ASX since 1989, Waterco’s evolution showcases a dedication to technological advancement and responsible resource management.