Simply Reliable Salt Water Chlorination
The Pentair FreeFlo 25RP Salt Chlorinator with Timer offers a dependable, hassle-free solution for pool owners seeking automatic, consistent sanitation. Built in Australia by Pentair, this chlorinator uses common table salt (or mineral salts) to generate chlorine directly in your pool, ensuring safe, effective, and continuous water treatment.
Designed for ease of use and durability, the FreeFlo 25RP is built to withstand the harsh conditions of Australian pools, offering years of reliable service with minimal maintenance. This chlorinator ensures your pool stays in perfect condition, reducing the need for manual intervention and keeping your pool clean and clear with minimal effort.
Why Choose the FreeFlo 25RP?
The Pentair FreeFlo 25RP combines reliable, time-tested technology with high-quality materials to deliver an affordable yet durable solution for pool sanitation. Ideal for pool owners who need a low-maintenance chlorinator, it’s a great option for those seeking an efficient system without sacrificing quality.
Benefits:
- Automatic Sanitation: Eliminates the need for manual chlorine dosing by automatically generating chlorine from salt, ensuring your pool water is always safe and ready for swimming.
- Lower Chemical Costs: By using table or mineral salt to produce chlorine, you save on the cost of buying and storing traditional pool chemicals.
- Self-Cleaning Cell: The reverse polarity function keeps the electrolytic cell clean, reducing maintenance time and increasing the lifespan of the system.
- Consistent Water Quality: Continuously sanitizes your pool water, helping prevent bacteria and algae buildup, ensuring safe, sparkling clean water year-round.
- Durable Design: Made to withstand Australia’s tough pool conditions, the FreeFlo 25RP is built for long-lasting performance, even in harsh weather and pool environments.
- User-Friendly Operation: The simple timer and adjustable chlorine control make it easy to manage your pool’s sanitation needs with minimal effort.
- Peace of Mind: With a 5-year limited warranty, you can trust that the FreeFlo 25RP will deliver dependable performance and reliability season after season.
Design & Function Highlights:
The Pentair FreeFlo 25RP Salt Chlorinator is equipped with a range of functions designed for ease of use, reliability, and optimal performance. Here are the key features that make this chlorinator stand out:
- Timer: The ATB-72 series time switch controls the chlorinator and pool pump. It allows the system to turn on and off according to your designated timer settings, ensuring consistent and efficient operation.
- Timer/Off/Manual Switch: This switch allows you to select between three modes:
- Timer Mode: The chlorinator and pump operate based on your timer settings.
- Manual Mode: The chlorinator and pump run continuously until manually switched off.
- Off Mode: Turns off both the chlorinator and the pool pump completely.
- High Salt Level Warning: A red warning light indicates when the salt level in the pool exceeds 4500ppm. If this light is on, adjust the chlorine control to lower the output and bring the salt level back into the optimal range.
- Chlorine Output LEDs: The chlorinator features 10 LED indicators, each representing 10% chlorine output. When the correct salt level is in the pool, all 10 lights will illuminate. The chlorine output can be adjusted to meet your pool's needs.
- Easy Chlorine Control: The simple control dial lets you adjust the chlorine production to suit your pool’s needs. Turn the dial clockwise to increase chlorine output or counter-clockwise to reduce it.
- Polarity Light: This indicator alternates between orange and green every 4-12 hours, signaling the polarity reversal cycle of the electrolytic cell. The factory default cycle is 12 hours.
- Circuit Breaker: A built-in circuit breaker provides protection from power surges or overloads. If the circuit breaker is triggered, the yellow center button will pop out, turning off the unit. To reset, simply press the button back in.
- Electrolytic Cell Included: Premium-grade titanium cell for efficient and self-cleaning performance.
Key Features:
- Efficient low salt operation at 3500-4500ppm (0.35% - 0.45%) for optimal chlorine production.
- Chlorine output of 25g/hr, ideal for pools up to 60,000L (depending on climate).
- Compatible with mineral and regular pool salt for added flexibility.
- Over temperature protection to prevent overheating and ensure safe, reliable performance.
- High-efficiency toroidal transformer to maximize chlorine production and reduce energy consumption.
- Premium grade titanium cell for durability and self-cleaning performance.
- Over current protection to safeguard the system from electrical surges.
- Analog timer for reliable scheduling of chlorinator and pool pump operation.
- Silicon controlled rectification for enhanced electrical efficiency and performance.
- Very high chlorine production for effective and consistent pool sanitation.
- Acrylic weather shield to protect against the elements and ensure reliable operation.
- High-impact ABS plastic cell housing for superior durability in harsh pool environments.
- Versatile installation with a wall-mount bracket and compatibility with 40mm or 50mm PVC piping (with supplied reducers).
Warranty:
- Domestic Use: 5-year limited warranty (3 years full on power pack and cell + 2 years pro-rata on cell), plus 1-year labour cover from date of purchase.
- Commercial Use: 1-year warranty for motels, spas, apartments, or high bather load settings.
Specifications:
| Model |
FreeFlo Salt Chlorinator 15g/hr
FFCL-15-RP |
FreeFlo Salt Chlorinator 25g/hr
FFCL-25-RP |
FreeFlo Salt Chlorinator 35g/hr
FFCL-35-RP |
| Chlorine Output (g/hr) |
15 |
25 |
35 |
| Calcium Hypochlorite Equivalent (65%) |
23g |
38g |
54g |
| Sodium Hypochlorite Equivalent (12.5%) |
120ml |
200ml |
280ml |
| Supply Voltage (VAC) |
230-240 |
| Output Voltage (VDC) |
8.5 |
| Output Current (A) |
15 |
25 |
35 |
| Salt Level (ppm) |
3500-4500 (optimal 4000) |
Sizing Your Chlorinator
Steps To Calculate The Chlorine Output Required:
- Determine your pool size (litres).
- Move along the horizontal line until you reach your climate zone.
- Go down to determine the amount of chlorine you require (g/hr)
- Always allow an extra 10-20% (if your budget allows for it).
- In commercial installations, allow at least 100% extra.
Recommended Levels To Ensure Optimal Operation:
For a sparkling clean and healthy pool, test water weekly during summer and maintain these ideal levels for the FreeFlo Salt Chlorinators:
| Parameter |
Ideal Range |
How to Increase |
How to Decrease |
Testing Frequency (Peak Season) |
| Free Chlorine (ppm) |
1.5 – 2.0 |
Increase output of chlorinator. Add chlorine. Increase filtration time |
N/A |
Weekly |
| pH |
7.2 – 7.4 |
Add buffer or soda ash (Sodium Carbonate) |
Add Muriatic Acid |
Weekly |
| Total Alkalinity (ppm) |
90 – 150 |
Add Sodium Bicarbonate |
Add Muriatic or Dry Acid |
Weekly |
| Calcium Hardness (ppm) |
200 – 400 |
Add Calcium Chloride |
Partially drain & refill pool |
Weekly |
| Cyanuric Acid (ppm) |
40 – 65 |
Add Cyanuric Acid |
Partially drain & refill pool |
Regularly |
| Salt Level (ppm) |
3500 – 4500 (optimal 4000) |
Add salt (~20kg per 5000L) |
Partially drain & refill pool |
Regularly |
Notes: Turn off the chlorinator before adding salt to avoid overload damage (this will void warranty). Manually add chlorine on initial startup or after high bather load, as the unit maintains—not builds—chlorine levels.
Frequently Asked Questions:
What should I do if the chlorine output LEDs are flashing?
Cause: This indicates no flow in the system.
Remedy: Check the following:
- Ensure the pool pump is turned on.
- Open any closed valves.
- Check for air in the system and inspect O-rings.
- Clean or backwash the filter if it’s dirty.
- Ensure the water level is adequate and fill the pool if needed.
- Clean the water probe sensor with mild hydrochloric acid if there's calcium build-up.
What does it mean if the high salt red LED is illuminated?
Cause: The salt level in the pool is too high (above 4500ppm).
Remedy: Turn the chlorine control dial counterclockwise to reduce the chlorine output and bring the salt levels down.
What should I do if no lights are illuminated on the chlorinator?
Cause: The system may be off or there may be a power issue.
Remedy: Check the following:
- Reset the circuit breaker if it has tripped.
- Verify that there is power by checking the main power switches and circuit breaker.
Why is there low or no chlorine production?
Cause: This could be due to a variety of reasons.
Remedy: Check the following:
- Increase the chlorine production output.
- Check and adjust the salt level to 4000ppm and ensure stabilizer (Cyanuric) levels are correct.
- Adjust the pH to the optimal range of 7.2-7.4.
- Increase the timer period to allow for longer running time.
- Add a phosphate remover if phosphate levels are high.
- Check the cell connection at the junction box on the unit’s underside.
What can I do if there is abnormal calcium build-up in the electrolytic cell?
Cause: Calcium levels in the pool water are too high.
Remedy:
- Reduce the calcium level in the pool by partially draining the water and refilling with clean water.
- Use a calcium reduction agent.
- Clean the electrolytic cell using a mild hydrochloric acid solution.
How do I resolve a timer that’s out of sync?
Cause: The timer settings might be incorrect or the chlorinator is installed on an off-peak tariff.
Remedy:
- Ensure the timer is set correctly by following the proper procedure.
- If installed on an off-peak tariff, the timer will need battery backup.
- Check that the Timer/Off/Manual switch is in the correct position.
What should I do if the over temperature red LED is on?
Cause: This may occur if the salt level is too high or if the system is in an extremely high-temperature environment.
Remedy:
- Turn the chlorine control counterclockwise to reduce the salt level (if no other LEDs are on).
- Install the chlorinator in a cooler area or provide adequate cooling if it's in a high-temperature environment.
