Pool chlorine and bromine dispenser - In-line and off-line

Keeping pool water clean and safe is essential for enjoyable swimming. The Dossi range of automatic tablet feeders ensures proper disinfection using Trichlor or Bromine tablets. These feeders are ideal for maintaining optimal chlorine or bromine levels, and are compatible with AstralPool's advanced Poolwatch or Controller systems for full automation.

Two main configurations are available:

• In-line installation: Water passes directly through the feeder, dissolving tablets via the Venturi effect.
• Off-line (bypass) installation: Water is diverted through the feeder, with integrated valves for flow control and easy tablet loading.

Detailed Features

• Capacity options: From 3 kg to 30 kg for pools of all sizes.
• Construction: Made of chlorine- and bromine-resistant ABS plastic.
• Safety: Features include anti-return valves, water purging, and dual-lock lids.
• Compatibility: Suitable for both residential and commercial pools and spas.
• Low maintenance: Weekly checks and tablet refills are generally sufficient.
• Pressure regulation: Automatic pressure safety valves on larger models (Dossi-Gigant).

Comprehensive Description

Designed with simplicity and safety in mind, the Dossi feeders are essential tools for automated chemical dosing in pools. The chlorinator or brominator is filled with tablets and adjusted to maintain the correct concentration. Weekly inspection ensures uninterrupted operation. For larger pools, the Dossi-Gigant offers exceptional autonomy with 20–30 kg tablet capacity, ideal for commercial use.

For complete peace of mind, these feeders can be combined with flowmeters and AstralPool's Easywatch, Poolwatch or Controller systems, which regulate dosing based on real-time water conditions.

Usage Tips

• Read the instruction manual thoroughly before use.
• Only use slow-dissolving tablets of Trichlor or Bromine.
• Never use powders, granules, or quick-dissolving chemicals.
• During winter, empty the feeder completely and remove remaining tablets.
• Always wear protective gear when opening the feeder and avoid inhaling fumes.
• Use DPD test kits or strips to measure residual chlorine/bromine levels.

Safety Information

• Warning: Disconnect the pump before opening the feeder.
• Protect hands and eyes when handling chemical tablets.
• Ensure feeder is never pressurized beyond recommended levels (max 2.5–3 kg/cm² for Dossi-Gigant).
• Install vertically and use rigid PVC piping for best performance and safety.

Do’s and Don’ts

• Do: Check tablet levels weekly and refill as needed.
• Do: Use flowmeters to calibrate chemical feed accurately.
• Don’t: Mix chlorine and bromine tablets in the same feeder.
• Don’t: Block water flow—ensure valves are properly adjusted.

Available Variants

• Dossi-3 In-line – Code: 24429 – Capacity: 3.5 kg
• Dossi-3 Off-line – Code: 24430 – Capacity: 3.5 kg
• Dossi-5 In-line – Code: 21438 – Capacity: 5 kg (bromine only)
• Dossi-5 Off-line – Code: 01413 – Capacity: 5 kg (bromine only)
• Dossi-10 – Code: 21439 – Capacity: 10 kg (bromine only)
• Dossi-Gigant 40L – Code: 16631 – Capacity: ~20 kg
• Dossi-Gigant 60L – Code: 16632 – Capacity: ~30 kg

Legal Note

All Dossi models comply with national regulations regarding chemical dosing in swimming pools. Chlorine or bromine concentrations must be adjusted based on private or public use and are subject to local laws. Always check with your pool technician or local authority.

Key Characteristics

• Material: ABS Plastic, chlorine and bromine resistant
• Operation: Non-electric, Venturi effect or bypass
• Tablet Compatibility: Trichlor and Bromine only
• Installation Type: In-line and Off-line (bypass)
• Maintenance: Low, weekly checks recommended
• Safety: Anti-return valves, pressure safety features
• Suitable Pools: Private, public, and spa installations