Onga/Pentair FreeFlo 25RP Pool Salt Chlorinator w/ Digital Timer & Battery Backup
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Simply Reliable Salt Water Chlorination
Designed for the budget-conscious pool owner, the Onga/Pentair FreeFlo 25RP Salt Chlorinator delivers robust reliability and hassle-free performance to keep your pool sparkling clean for years. Engineered and manufactured in Australia by Pentair, a global leader in pool equipment, this chlorinator uses common table salt (or mineral salts) to produce chlorine right in your pool—safely, effectively, and automatically.
Mineral salt compatible for added flexibility, the FreeFlo 25RP lives up to its motto "Simply Reliable" and is built to withstand tough pool conditions while offering ease of use and dependable sanitation.
Benefits:
- Set and Forget: Fully automatic operation with manual mode option for flexibility.
- Cost-Effective: Produces chlorine from salt, reducing the need for chemical purchases.
- Built to Last: Engineered for durability in harsh Australian conditions.
- Easy to Use: Simple programming and clear documentation make setup a breeze.
Highlights:
- A - Chlorine Output LEDs: Monitor chlorine production at a glance with 10 LED indicators (each representing 10% output).
- B - Easy Chlorine Control: Fully adjustable dial to increase or decrease chlorine output to suit your pool’s needs.
- C - Digital Timer: High-quality Panasonic timer with battery backup for reliable scheduling.
- D - Electrolytic Cell (Included): Premium-grade titanium cell with rare-earth coating ensures efficient, self-cleaning performance.
Features:
- Chlorine Output: 25g/hr – perfect for pools up to 60,000L (depending on climate).
- Digital Timer with Battery Backup: Ensures consistent operation, even during power outages.
- Self-Cleaning Reverse Polarity: Minimizes maintenance with a durable titanium cell.
- Low Salt Operation: Works efficiently at 3500-4500ppm (0.35%-0.45%).
- High-Efficiency Toroidal Transformer: Maximizes chlorine production with energy efficiency.
- Durable Design: Acrylic weather shield and high-impact ABS cell housing for long-lasting performance.
- User-Friendly Controls: LED indicators and adjustable chlorine output for easy monitoring and customization.
- Mineral Salt and Regular Pool Salt Compatible: Offers flexibility for pool owners using either salt type. (Contact Us for mineral salt advice).
- Versatile Installation: Includes wall-mount bracket and fits 40mm or 50mm PVC piping (with supplied reducers).
- Australian Made: Quality craftsmanship with local support.
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.
Why Choose the FreeFlo 25RP?
The FreeFlo 25RP combines time-tested technology with premium materials to deliver a reliable, low-maintenance solution for pool sanitation. Whether you’re upgrading an existing pool or installing a new system, this chlorinator offers exceptional value without compromising on quality. Pair it with regular water testing (pH 7.2-7.4, salt 4000ppm) for optimal results.
Specifications:
| Model | FreeFlo Salt Chlorinator 25g/hr FFCL-25-RPD |
FreeFlo Salt Chlorinator 35g/hr FFCL-35-RPD |
|---|---|---|
| Chlorine Output (g/hr) | 25 | 35 |
| Calcium Hypochlorite Equivalent (65%) | 38g | 54g |
| Sodium Hypochlorite Equivalent (12.5%) | 200ml | 280ml |
| Supply Voltage (VAC) | 230-240 | |
| Output Voltage (VDC) | 8.5 | |
| Output Current (A) | 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 (FreeFlo 25RP) | 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.
| SKU | FFCL-25-RP-BB |
|---|---|
| GTIN | 721749519058 |
| Barcode | FFCL-25-RPD |
| Package Length | 37 cm |
| Package Width | 41 cm |
| Package Height | 25 cm |
| Brand | Onga |
| Model | FFCL-25-RPD - 25g/hr with Digital Timer & Battery Back Up |
| Product Type | Pool Chlorinator |
| Shipping Type | Standard |
| Warranty | 5 Years (3+2) |
| Self Cleaning | Yes |
| Chlorine Gas Output | 25 grams per hour |
| Pool Size | Up to 60,000L |
| Battery Backup | Yes |
| Time Clock | Yes |
| Min/Max Salt levels | Low salt operation: 3500-4500ppm |
| Plumbing | 40/50mm |
Shipping
Same-day dispatch applies to orders received by 12.00 pm (AEST) during business days. Orders received after 12.00 pm and on weekends or public holidays will be dispatched on the next business day.
Delivery fees are $19.95 flat-rate per order Australia-wide, no matter how many products are in it. Orders containing bulky items like sand filters, acoustic boxes, heat pumps, pool covers, and pool slides may incur additional fees as they require specialized carriers.
Below are the estimated time to arrival in business days once an order is shipped.
| Destination | Sydney | NSW | VIC | QLD | SA | WA/NT |
|---|---|---|---|---|---|---|
| Business Days | 1 - 2 | 2 - 4 | 2 - 4 | 2 - 4 | 3 - 4 | 5 - 6 |
Rural and remote addresses, where delivery is not provided every day, may take longer.
Returns
Satisfaction Guarantee: If you are not satisfied with a product for any reason, you are welcome to return it to us for a full refund or exchange within 30 days of the purchase date - even if you have used the product. Returns are free, and we will cover return shipping.
We take full responsibility for the safe arrival of the products that you order from us. We will replace at our expense any product that arrives faulty, damaged during transit, or is the incorrect product. Click here for details
If you have any questions about our shipping policy or our return policy, please contact us on 1300 766 619 or through our contact us form.